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Brooke House – Waterproofing Multi-Level Luxury Residential Basement

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Overview

 

 

 

 

 

 

 

The scope of the project was to facilitate a combined waterproofing solution for a 2,000m² luxurious subterranean space which includes a double-level basement that will accommodate a cinema room, spa wing and swimming pool, changing, and screening rooms, servery, storage & laundry wing, plant rooms and other accommodation.

Delta Registered Installers, Knowles were appointed as principal contactor to collaborate with the architects to fulfil the role of Waterproofing Design Specialists in providing a reliable, watertight solution for this £100m project.

Knowles created combination waterproofing design which was both compliant with British Standard 8102:2009 2009 ‘Code of Practice for Protection of Below Ground Structures Against Water from the Ground’.

Combination waterproofing systems can offer optimal structural protection against water ingress.

 

 

 

 

 

 

Some designers will specify two forms of waterproofing.  These specifications “combination” Types A, B & C systems to achieve the desired waterproofing performance and to meet requirements of BS8102:2009.  It is always prudent to source these systems, if possible, from a sole source supplier, as this factor will dramatically in reducing risks associated with compatibility of products and assists with technical design issues.

Combination systems are an ideal solution for convoluted/difficult shapes to waterproof and provide continuity of waterproofing design.

In this instance, Knowles suggested a robust solution consisting of Types A, B and C waterproofing for a total risk averse solution.

The project required Grade 3 protection – No dampness or water penetration is acceptable.

Methodology

Delta Registered Installers, Knowles are a leading construction company, specialising in super-prime residential and commercial schemes.  Specialists in complex projects, Knowles deliver projects from concept to completion, including shell and core, subterranean, superstructure and fine finishes.

With many new basement projects, the basement is phased and constructed during the start of the build process.  Knowles with ease overcome issues encountered during the excavation and tolerances with 30,000m³ of rock and soil being removed to build an open cut basement.

 

 

 

 

 

 

Between the design concept phase and construction, changes were needed to the initial waterproofing design.  In limiting the impact of these design changes on project cost and identifying actions required, Delta were on hand.  David J. Symes, Delta’s Co-Managing Director attended design meetings and supplied strategies for suitable resolution.

In addition to our Type A and C waterproofing systems, David was delighted to introduce to Knowles our new (Type B) watertight concrete additive, Koster BDM.  Koster BDM had previously been used in Europe and extensively in other countries.  Koster BDM is a ccrystallizing integral waterproofing additive for concrete and was supplied for a volume of 3000m³ of waterproof concrete poured over a period of 12 months. The tallest walls were required at 6.750m x 0.5m thick, with the largest spanning slab 10,700m².

Waterproofing concrete offers structures numerous benefits such as strengthening the structure (waterproof concrete lets in less moisture, causing fewer cracks, which means it is less vulnerable to the elements), whilst reducing maintenance costs, all designed to BSEN1992 Euro code 3.

Prior to the pour of the concrete slab, Delta DualProof was utilised.  DualProof is a pre-applied, fully, and permanently bonded, composite sheet waterproofing membrane, consisting of a special non-woven Fibre-Tex fleece co-extruded with a highly flexible PVC membrane designed for use with structural reinforced concrete.  Freshly poured concrete is embedded completely into the special designed and developed fleece, creating a unique and permanent mechanical bond.

For the vertical waterproofing, Koster Deuxan2C was expertly spray applied by Knowles. The waterproofing layer was then protected with Delta Geo Drain Quattro, prior to backfilling, which is a combined drainage and protection layer, capable of a loading of 40 metric tonnes.

Delta’s Type C system was used internally, providing negative side waterproofing.

Prior to the installation of the Type C System, all new concrete was treated with Koster Polysil TG 500 to prevent the leaching of free lime, with all construction joints sealed using Koster Repair Mortar Plus.  In a full belts and bridges approach, Knowles applied a closed layer of Koster NB 1 sealing slurry to prevent migratory dampness.

Delta’s MS 500 membrane was applied to all vertical earth retained elevations, linked between intermediate level slabs via a concrete bund incorporating Delta drainage channels which was piped from upper to lower level via vertical pipes, with the all-important inspection ports added at approx. 8Lm intervals to ensure that the drainage aspects are fully maintainable and in accordance with BS 8102:2009.

Delta MS 20 membrane, which has a 20mm studded profile for greater drainage capacity, was used across the lower basement ground bearing slab, with the Delta perimeter channel incorporated to provide a suitable drainage solution which led to Delta bespoke sump pumps.

 

 

 

 

 

 

Delta provided a range of bespoke sump chambers to complement the internal Type C Waterproofing solution, all with our latest WIFI enabled high water level alarm which offers predictive maintenance and battery back-up systems to provide 24/7 remote monitoring, acting as a virtual engineer on site, reducing the requirement to conduct unnecessary servicing and reducing the structures carbon footprint.

The range of Delta products used in conjunction with Knowles expertise was extensive and includes:

Products used:

  • Delta MS20
  • Delta MS 500
  • Delta Geo-Drain Quattro
  • Koster Deuxan 2C
  • Delta DualProof
  • Delta Drainage channels & connectors
  • Koster NB 1 Grey
  • Koster SB Bonding Emulsion
  • Delta Dual V4 Submersible pump stations
  • Koster Micro Grout
  • Koster BDM

Case Study Results

Delta’s site services team delivering an exceptional quality assurance and training service throughout.

Knowles have provided a complete bespoke watertight solution following the guidelines set out in BS 8102:2009, with all works undertaken to a high standard and delivered on time, despite changes to the waterproofing design.

Delta is privileged to have been involved in this phenomenal project, in the words of David J. Symes “In my opinion a serious feat of engineering.”

 

 

Newton Drives Continued Development With Specialist Waterproofing Training

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Professional development is an ongoing process, and as the UK’s leading supplier of waterproofing systems, Newton Waterproofing consistently works to help architects and developers achieve the next step.

The company offers a range of training initiatives covering all aspects of waterproofing in accordance with the British Standard 8102:2022, that aim to expand knowledge and skills in waterproofing practices.

Newton Waterproofing’s Managing Director, Warren Muschialli, comments: “At Newton, we deliver long-term value to trainees and continually raise the standard of work through various means, such as our partnerships. To help our growth, we partner with some of the leading waterproofing manufacturers around the world, enabling us to offer the highest quality training direct from our supply partners, as well as access to the best products in the industry.”

Additionally, the Newton School of Waterproofing accommodates all audiences, offering individuals and organisations a bespoke experience.

The Newton establishment is equipped with dedicated training facilities, including a pump room with full pump installations for trainees to practice on, and an outdoor spray area to learn how to correctly apply liquid waterproofing products.

Newton’s training areas also have full-size cross-sections of both a Type C Newton CDM System and a Type A Newton HydroBond System, showing a visual representation of how these products work in conjunction with each other.

With a powerful team of technical experts, Newton have the means to frequently deliver their four RIBA Approved, double points CPDs to architects, engineers and construction professionals across the country.

All four presentations can be moulded to individual requirements. Their newest and most favoured CPD on “Waterproofing Design Strategies to the New British Standard 8102:2022” has been specifically designed to educate construction professionals on the most important updates to the 2022 version of the British Standard.

Throughout this CPD, you can expect a 45-minute seminar plus a Q&A, delivered either at your office, as an online webinar, or at Newton’s training facility in Tonbridge, Kent.

For more information, call 01732 280 635 or visit www.newtonwaterproofing.co.uk

Delta Amphibia Pre & Post Applied Membrane Awarded BBA

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BBA Award for Delta Amphibia, Pre- Post Applied Membrane

DCIM/100MEDIA/DJI_0040.JPG

We are proud to announce that our Amphibia, a pre- and post- applied fully bonded waterproofing membrane with reactive core, this hydro-reactive, self-healing, self-sealing multi-layer waterproofing system which can be applied on vertical and horizontal areas of new construction has been awarded BBA Certification, rubberstamping Delta’s rigorous approach to product specification and assessment.
Agrément Certificates ensure products and systems that have passed a series of comprehensive assessments – including laboratory tests, on-site evaluations, quality management checks and inspections of production.

Perfec_Bind_Amphibia_BrochureCertification includes:

•  factors relating to compliance with Building Regulations where applicable
•  factors relating to additional non-regulatory information where applicable
•  independently verified technical specification
•  assessment criteria and technical investigations
•  design considerations
•  installation guidance
•  regular surveillance of production
•  formal three-yearly review.

BBA certification is a mark of quality, safety and reliability and is recognised by building control, government departments, architects, local authorities, specifiers, and industry insurers.

Delta Amphibia – Pre- Post Applied Waterproofing Membranes

Perfec_Bind_Amphibia_InstallKey factors assessed included:

  • Resistance to water and water vapour — the system provides an effective barrier to the passage of water under hydrostatic pressure and water vapour from the ground.
  • Resistance to mechanical damage — the system will accept the limited foot traffic and loads associated with installation.
  • Durability — under normal service conditions and when suitably protected, the system will provide an effective barrier to the transmission of liquid water and water vapour for the design service life of the structure in which it is incorporated.

NHBC Standards 2018

Amphibia rotolo + ScatolaIn the opinion of the BBA, Delta Amphibia, if installed, used, and maintained in accordance with this Certificate, can satisfy or contribute to satisfying the relevant requirements in relation to NHBC Standards, Chapter 5.4 Waterproofing of basements and other below ground structures.

Where Grade 3 (BS 8102:2022, Table 2) waterproofing protection is required, and the below ground wall retains more than 600 mm (measured from the top of the retained ground to the lowest finished floor level).

In the opinion of the BBA, the system is suitable for use on existing structures when installed and used in accordance with this Certificate and NHBC Standards for Conversions and Renovations, taking account of other relevant guidance within this document on the suitability of the substrate to receive the system, and where necessary, the relevant Chapters of NHBC Standards.

BS 8102:2022

Delta Amphibia satisfies all grades of waterproofing in accordance with BS 8102:2022, Table 2 as Type A, Barrier Protection System in accordance with section 8, Type A (Barrier) Protection – Sub Section 8.2.4, Active Core Liners and Table 3, Waterproofing Barriers.

CE marking

The Certificate holder has taken the responsibility of CE marking the system, in accordance with harmonised European Standard BS EN 15814:2011.
For more information on our Amphibia Membranes visit our website at www.deltamembranes.com.

Newton Waterproofing Delivers Comprehensive Gas Protection Solution

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Newton Waterproofing Systems, the UK’s leading independent designers and suppliers of guaranteed waterproofing systems, stock a range of products that combine effective waterproofing and gas protection.

Combining Waterproofing and Gas Protection Below Ground

RSS_Type_A_403_HydroBond-GB_Jun19_04Newton has a range of products that meet the necessary standards for use as protection against below-ground gases, including the third-party certified HydroBond 403 Plus GB, which provides resistance to radon, methane, carbon dioxide and hydrocarbons.

Suitable products must always be paired with sensible design however, and the most effective combined gas and waterproofing designs combine multiple forms of protection, and always include a Type C cavity drain membrane system.

When either vented to external air or positively pressurised the Newton CDM system can also contribute to gas resistant designs.

Speak to our Technical Team at tech@newtonwaterproofing.co.uk.

Industry-Leading Ground Gas Barriers

APG-Logo-web-980With a commitment to delivering comprehensive gas protection solutions, Newton is proud to have partnered with innovative and market-leading Scottish manufacturer A. Proctor Group and can now supply their range of high-performance ground gas barriers across the UK.

These include the reinforced gas barriers Protech GM Super and Protech VOC Flex, both of which have been BBA certified and protect against radon, methane, and carbon dioxide.

Visit our website to find out more: www.newtonwaterproofing.co.uk.

Proud Partners

NewtonWaterproofing2“A. Proctor Group has been developing their portfolio for many years, and in the 1990s grew to include a range of ground gas protection membranes.

Today, Newton is proud to be partnered with an innovative company that can provide well-designed systems to prevent hazardous gases and contaminants in the ground from causing harm to occupiers of a property, as well as performing the function of a damp-proof membrane.”

  • Warren Muschialli, Managing Director at Newton Waterproofing

For the right gas proofing help and advice with your next project, contact Newton Waterproofing on 01732 360 095 or email tech@newtonwaterproofing.co.uk.

What is cold applied liquid roofing/waterproofing?

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What is cold liquid applied roofing waterproofingAs the name implies, cold applied liquid roofing/waterproofing is the use of a liquid waterproofing system without the requirement of heat.

Waterproofing roofs (whether it’s a flat roof or podium deck) is one of the most important structural requirements of any building. A watertight roof performs a vital function in protecting a structure.

When water starts to stand on a roof, not only can it lead to structural damages, it can also reduce the roof’s lifespan.  In the roofing industry, ponding water refers to water that has stood flat on a roof for longer than 2 days following precipitation.  Ponded water on roofs can also be a breeding ground for micro-organisms and other bacteria. This can be particularly problematic where the roof is protecting a hospital or school.  Flat roofs are a regular feature on public and commercial properties such as schools, hospitals, leisure centres, warehouses and factories.

Cold Liquid Applied WaterproofingLiquid waterproofing systems or cold liquid roofing are a great cost-effective method for waterproofing both new and existing roofs.

Simple to install and long-lasting, there is little doubt that the introduction of liquid waterproofing has been one of the most innovating advances in the industry.

Cold liquid waterproofing is simple and ready to use, at once forming an effective barrier to water and humidity.

Due to cold liquid roofing’s easy to apply nature, it is suitable to a wide variety of uses.  Applied with a simple brush, it easily allows reach to the almost inaccessible of areas, meaning that critical areas for the overall quality of the waterproofing are continuously and completely covered, guaranteeing the total protection for surfaces.

Benefits

Roof Guard Group ShotsCold liquid applied roofing is significantly faster, safer and less labour intensive to apply than conventional roofing materials.

Cold applied roofing, requires no torches, burners, or other heating equipment during application, posing no fire risks.  A cold applied liquid waterproofer cures to form an elastomeric waterproof membrane. Practically bonding directly to a substrate, providing a seamless, UV-stable continuous system, able to contour any roof shape for intricate detailing.

Why cold applied liquid systems?

Cold applied liquid waterproofing systems are engineered to supply a fast curing, long-lasting, flexible, elastomeric solution.

Other benefits include:

  • Excellent adhesion to all kinds of surfaces
  • Chemical resistant
  • High resistance to extreme temperatures
  • Completely seamless waterproofing
  • No heat or special equipment needed

Delta provides a comprehensive Technical Support Service for architects, designers, engineers, specifiers and contractors, with guidance on product selection, design advice and installation guidance. Your building is one of your most valuable assets which needs to be protected to ensure its long-term durability. You need to be confident that you have made the right choice for your investment from the very start.

A Technical Approach to waterproofing design – podium decks, buried roofs, balconies, and terraces

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View Decks, Terraces and Green Roof Technical Drawings

View the Delta Roof Guard brochure

As a structure’s first line of defence to water ingress, a waterproofing design should offer long-term value, maximum performance, and a pragmatic design approach.

1. all items together copyAs with most, if not all structural waterproofing projects, selecting an appropriate waterproofing system is crucial in project success.  Waterproofing design spans many disciplines, when designing an appropriate waterproofing system, a waterproofing design specialist will always take into consideration the end use of a space to ensure they have designed a suitable solution that will meet both standards and user requirements along with functionality.

A Waterproofing Designer’s philosophy defines what they wish to accomplish in the design of their waterproofing system and which principles they will use to do so.  Identifying a robust and suitable design philosophy is an important aspect when designing a continuous system, as this will not only directly impact in how users install the system but also in future maintenance which will directly impact on the property owner.

Focus should be on a life-cycle oriented design, addressing life-cycle concepts and methods, deterioration and damage evaluation, life-cycle performance indicators, inspection and maintenance procedures all implemented to work in harmony.

Podium DeckThere are many common pitfalls when it comes to designing a waterproofing system for podium decks, buried roofs, balconies, and terraces.  Products do not fail!  When failures occur, it is due to the design and build philosophy not being correct.  The devil is in the detail – all waterproofing elements must be considered at the construction design stage to be durable and effective.

Delta Roof Guard cold applied liquid waterproofing systems are engineered to provide a fast curing, flexible, elastomeric solution for roofs, podium decks, terraces, balconies, walkways, and car parks.

Delta Roof Guard waterproofing systems are certified Broof (t4), complying with the regulations on resistance and safety on flat roofs, mitigating fire risk.

Delta Roof Guard CP and QC practically bonds directly to substrates, providing a seamless, UV-stable membrane that does not delaminate.  Due to it’s flexible nature Delta Roof Guard follows the contours of any roof shape allowing for intricate detailing.  Once cured, Delta Roof Guard achieves a seamless finish with no joints or breaks. Offering rapid curing even in winter months!

Delta Roof Guard also comes with a comprehensive range of primers, all able to aid the adhesion of the liquid applied membrane system to the relevant substrates.

Roof_Guard_Triple_BrochureDelta Roof Guard cold liquid waterproofing is lightweight, has great elasticity, meaning that it will absorb structural movements, whilst compensating for shrinkage or expansion due to changes in temperature.  The ease and speed of application makes Delta Roof Guard Cold Liquid Waterproofing the perfect partner for complex roofing projects.

This cost-effective cold liquid water proofer is suitable for new or existing roof projects without the requirement for mechanical restraint, welding or torching, negating any fire risk during application.

Delta Roof Guard cold-applied liquid roofing is ideal for projects where there is a restriction of hot works.  Seamless in nature, with a fast speed of application, Delta Roof Guard is an ideal choice for roofs with multiple penetrations or limited spaces such as balconies.

Delta Roof Guard work perfectly on large, flat commercial roof areas or small residential roof areas.

Delta Roof Guard has been independently tested and its performance verified, having approvals from the British Board of Agrément (BBA).

ESSENTIALS you should be looking for from your product:

  • Elasticity
  • Breathability
  • Workability
  • Fire Resistance

This is an incredible product, to discover more about the Delta Roof Guard range, why not contact our trusted technical team who will help find the best solution for your project.

Built in Protection – Delta MS 500 Fire Retardant, Type C Cavity Drainage System

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Technical Drawings – MS Fire Type C Drained Protection – Delta Membranes

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Delta Fire Retardant Cavity Drain System (Type C) – Delta Membranes

Perfect_Binding_Brochure_Mockup_6 copyFire-retardant materials have a critical role to play in keeping modern buildings safe. However intense the fire, fire-retardant materials offer occupants of a building, valuable time for means of escape.

What is a Fire Retardant?

A fire retardant is a substance that is used to slow down or stop the spread of fire or reduce its intensity. This is commonly accomplished by chemical reactions that reduce the flammability of fuels or delay their combustion.

8 copyWhat is the Difference Between Fire Retardant and Flame Retardant?

Fire retardant and flame retardant both work to prevent fires, in occurrence of fires, it assists to stop the spread and help to reduce the amount of damage caused by flames. Both are invaluable to protecting homes and structures and provide extra time to for residents to safely evacuate a building in the event of a fire.

Fire retardant testing

Fire retardant materials, are measured on the degree to which a product contributes to the spread and growth of a fire, ways to measure this include:

  • How easily the product ignites
  • The amount of heat released when it burns
  • How fire spreads on its surface
  • The way in which it disintegrates as it burns
  • The quantity and nature of smoke released

4 copyThese parameters contribute to the performance ratings, within the Euroclass system. Most building materials sold on the European market must be assigned a file indicating its fire resistance based on a Euroclass rating system. There are 7 Euroclasses of reaction to fire performance for construction products which extend from A1 to F

Delta Membrane Systems Limited believes it is a fundamental design approach that all occupied structures regardless of height or where there may be challenges in exiting the premises (regardless of height), should be constructed from materials which are fire-retardant.

April 2021, saw the introduction of the Delta MS 500 Fire Retardant System.  This innovative Type C Waterproofing Membrane not only complies with BS 8102:2009 “Code of Practice for the Protection of Structures Below Ground” but also achieves a Euroclass rating of B-S2, d0 in accordance with EN 13501-1:2018.

In addition to fire tests carried out on the Delta MS 500 Fire Retardant System, Delta sought approval from the BRE (Building Research Establishment) for a further certification approval providing 3rd party independent certification.

Our Design and Build Philosophy is quality driven, working with architects and trades alike, putting at the forefront construction considerations to ensure buildability, functionality, and maintainability. The result of this single approach is a consistent, complete, and quality design that is hard to equal. Whatever the needs of your project, you can rely on our Technical Team of Waterproofing Professionals to ensure you get the right advice, support, and practical help at exactly the right time. Email info@deltamembranes.com or call us on 01992 523 523.

Thinner by design ProTherm Quantum PLUS+

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100-Liverpool-Street.Environmental issues influence the construction industry at every stage of the building process. Government legislation and the Building Regulations have become more stringent with every update, requiring more sustainable approaches, and driving the industry to design, construct and deliver more energy-efficient buildings.

Building balconies and terraces over heated space is problematic for architects, designers and contractors: in new-build applications, stringent regulatory requirements and long-term economic viability have created greater demand for improved energy efficiency, while roofing designers and installers must strive to keep overall construction as thin as possible.

In order to meet the required U-values, the insulation will sometimes be installed both on top of and on the underside of the balcony or terrace. Not only can this be time-consuming, technically challenging and pose a condensation risk, it can also add unnecessary costs and increase the overall thickness of the construction.

There remains a huge industry demand for thinner and better performing products that will have a smaller impact on constructability and function in use. These limitations can significantly impact the ability to meet the requirements of Approved Document Part L Approved Document Part M and NHBC Chapter 7.1 when designing inverted roof constructions.  Here the demand to insulate above habitable space can make it difficult for a designer to meet the backdrop of increasing thermal requirements whilst meeting the desire to maximise the glass façade and cater for a level threshold.

ProTherm_Quantum-PLUS-Hybrid copyInverted Roofing System market leader Radmat Building Products developed the ProTherm Quantum Inverted Roof Systems in 2014 to tackle exactly these issues, and in 2016 the BBA Certified ProTherm Quantum VIP Inverted Roof Systems; making it the first Vacuum Insulated Panel system to achieve such an accolade.  Since then, ProTherm Quantum VIP has undergone continual development, resulting in the BBA Certifying ProTherm Quantum PLUS+ VIP Inverted Roof Systems in 2020.

ProTherm Quantum PLUS+ consists of a rigid Vacuum Insulated Panel (VIP) robotically coated with an elastomeric waterproof coating, creating a robust ultra-high performance insulation panel with a Design Lambda value of 0.007 W/mK, potentially reducing insulation thickness to 72mm to achieve a 0.15 W/m2K U-value, as opposed to 220mm of Extruded Polystyrene (XPS) or 240mm of Expanded Polystyrene (EPS).

ProTherm_Quantum-PLUS-Pure copyProTherm Quantum PLUS+ can dramatically reduce the thickness of inverted roofing systems without compromising thermal performance whilst still achieving level thresholds.  Suitable for use in roofs, roof terraces, podiums, enclosed balconies over heated space, insulated walkways, green roofs and blue roofs ProTherm Quantum PLUS+ provides the thinnest and most robust state of the art insulation system for inverted roof construction.

Quantum-PLUS+-Architects-diagramWhether designing an inverted roof to achieve the lowest possible Surface Slab Level to Finished Floor Level (SSL-FFL) or rectifying unexpected slab of floor level issues, ProTherm Quantum PLUS+ provides the thinnest insulation solution for a given u-value in roof, roof terrace, podium and balconies over heated space.

Quantum-PLUS+-Step-diagramTo ensure every project achieves an optimal solution Radmat’s in-house Quantum Design Team provide a full service, from initial outline design and thermal calculation to pre-delivery site survey, providing a final design solution with layout drawings for sign off.  This comprehensive process considers the insulation thickness requirements early in the design process, highlighting potential threshold issues and providing the most cost effective solution to meet the target U-value.

Newton Latent Defects Guarantee is the Ultimate in Waterproofing Insurance

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Latent defectsNewton Waterproofing, the UK’s leading independent designer and supplier of guaranteed structural waterproofing systems, now offers Latent Defects Insurance – and it is the only such policy available through a UK waterproofing supplier.

With experience of more than 170 years, the family-run business based in Tonbridge has been providing clients with an unrivalled service for decades. Now, the Newton Latent Defects Insurance will provide customers with the ultimate protection.

Newton Waterproofing’s MD Warren Muschialli said: “In 2019, the construction insurance guarantees market underwent significant change, with a number of insurers withdrawing from the sector. Early in 2020, there was a further reduction in the number of rated insurers able to provide insurance for waterproofing.

“By its very nature, waterproofing is a risky business and it’s very tough to find good guarantees in the waterproofing sector.

“A lot of companies will provide self-guarantees but there is no insurance provided, while others will provide warranties that are not insurance-backed.

“But with our Newton Latent Defects Insurance we have managed to provide a unique policy which is backed by an A-rated, UK-based insurer.”

Peace of Mind Guaranteed

135 Golders Green Road NW11 8HG 18 June-3With a policy term of up to 12 years, the Latent Defects Insurance is available on qualifying projects which use multiple Newton waterproofing products to achieve a minimum score of 3.0 on the Newton Waterproofing Index (NWI). The NWI is a unique specification tool that provides specifiers and designers with a scoring system to accurately assess the level of risk and potential success involved in any waterproofing design.

The application for the guarantee is made via the installer directly to Newton’s A-rated insurer, and for the first two years of the policy the responsibility for repairing any leaks and defects lies with the installing contractor. Once this period has expired, all repairs are the responsibility of the insurer.

Newton’s Specialist Contractors have been specifically audited to ensure that they meet the necessary requirements to be able to provide the guarantee, while Newton’s waterproofing solutions and products have also successfully passed a rigorous auditing process to ensure that they are of sufficient quality to support the guarantee.

“Instead of a 10-year policy term we are offering a 12-year option which gives us a competitive edge,” said Warren. “No other waterproofing supplier in the UK can provide this level of protection and this is the best waterproofing guarantee on the market from a UK insurer that you can get.

“It comes through us and is backed by us – we are the broker’s client so the specifier knows that we will take responsibility for the waterproofing.”

Newton provide the best waterproofing systems for all structures, from new and existing domestic properties to large-scale commercial developments. For the right waterproofing help and advice with your next project, contact Newton Waterproofing on 01732 360 095 or email info@newtonwaterproofing.co.uk.

Product Focus – Koster KB Flex 200

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With a long background in structural waterproofing, Delta’s Director, Christopher Burbridge, tells us all about one of his favourite products.

As much as I love structural waterproofing (and trust, me I really love it), Koster products really are a place to invest when it comes to your project needs. I’m not saying you must drop half your budget on a lot of products, but you do have to invest time, research and yes, perhaps a little cash, when it comes to creating a robust solution.

What is it? Where did it come from?

A WOW product and one that never fails to impress me is Koster KB Flex 200. I absolutely love how Koster KB Flex 200 can instantaneously stop water in its tracks. Within seconds KB Flex 200 can solve massive problems, turning into an incredibly easy solution.  It’s a great “Impact” product.

It is incredibly useful on lots of waterproofing project and is user-friendly.

Koster Bauchemie AG have been specialising in development and production of high-quality waterproofing systems since 1982. Their headquarters are in the lovely town of Aurich, Germany.

Delta Membrane Systems is the UK distributor of Koster products.

What does it do?

Koster KB Flex 200 is a permanent plastic sealing compound ideal for sealing pipe and cable penetrations, cavities and for custom detail waterproofing solutions against moisture and pressurized water.

Prior to application, the Koster KB-Flex 200 cartridges are laid into warm water and heated to approx. +30 °C. This ensures that the material has the optimal consistency for application. The application area flanks must be thoroughly cleaned from the inside so that they are free of dust, sand and other loose particles.

 

Koster KB Flex 200 must be dimensioned so that the ratio of the width (w) to the diameter (d) of the installed material is not below 1.5:1. The maximum diameter of the waterproofing is 300 mm. Before applying Koster KB Flex 200, a backing is installed in the penetration at a depth of 10 cm using a common 2C PU foam. The Koster KB Flex 200 cartridge is then placed in the gun and the material is pressed into the penetration from back to front utilizing the nozzle so that the resulting layer thickness is at least 8 cm.

what keeps you continually using it?

Delta has an incredibly famous phrase “locking down a structure”. When we use this in a technical term, we are looking to stop any active water/leaks percolating through the structure at that time and/or to protect areas that are weak points such as service penetrations, which have the potential to leak. We need to ensure these areas are sealed prior to the application of the waterproofing system.

As I mentioned previously Koster KB Flex 200 is a great impact product. It makes the job of “locking down a structure” an incredibly easy one.

Koster KB Flex 200 can be used anywhere – from existing structures, to basements, swimming pools, as well as on new build projects.

The product is ideal because:

  • it doesn’t require ongoing maintenance
  • it instantly can stop flowing water
  • it doesn’t dry out and remains permanently mouldable
  • it adheres extremely well to dry and moist substates
  • it’s a great solution for sealing pipe and cable penetrations along with leak sealing and gap filling and sealing
  • it can be applied to dry, moist or wet substrates
  • it has an immediate functionality
  • it’s suitable for both positive and negative waterproofing

Want to witness Koster KB Flex 200 in action?  We have a great “How to” video guide on our website “How To” Video Guide – Koster KB Flex 200 – Delta Membranes and we absolutely love showing our customers how great a product this is by doing live demonstrations at Delta HQ.

If you’re passing HQ and would like a demo – we’ll always be happy to show you the value of this product.

To find out more about Delta products, call 01992 523 523 or email: info@deltamembranes.com.

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