waterproofing

Delta Membranes Case Study – Fernroyd, Bowden

Building Products Index Ltd February 27, 2018 Waterproof Membranes, waterproofing Leave a Comment

View the Delta Membrane entry on BPi

Visit the Delta Membrane website

SPECIFICATION

NBS Specification J40 (Clause 290) Flexible Sheet Tanking/ Damp Proofing.

BS 8102:2009 Type C Drianed Protection.

SYSTEM COMPONENTS

Koster Polysil TG500 Anti Lime Coating/Surface Primer,
Delta MS 500,
Delta PT Delta,
MS 20 Perimeter drainage channel
Delta Dual V3 Sump Pump

Overview

The scope of the project was to renovate a problematic damp residential basement to create a habitable dry living space. The property is a magnificent Victorian detached residence, built around 1850. The accommodation is extremely versatile and extends to around 5569 sq ft. The property’s extensive basements consisted of: hallway, three chamber rooms, storeroom and wine cellar. The Victorian property in a sought after setting, in Altrincham, Manchester.

Altrincham’s bedrock consists mainly of Keuper Waterstone (a type of sandstone). The project required sympathetic renovation, the property retaining a wealth of impressive original features including deep skirting boards, cornicing’s, mouldings, windows and shutters. Timberwise’s team were called upon to investigate the damp issues and to suggest remedial options which would incorporate BS 8102:2009.

All basements should be constructed (or retrofitted) to cope with groundwater levels up to the full retained height of the basement. Structural waterproofing preserves the integrity of a structure whilst ensuring the usefulness of the building for present and future use.

Methodology

Where specified all basement waterproofing projects carried out by Timberwise are designed and installed in accordance with the current British Standard BS8102:2009 “The Code of Practice for Protection of Below Ground Structures against Water from the Ground”. The Delta Cavity Drain Membrane System was installed allowing water to continue to penetrate through the wall where the flow could be controlled within the air gap between the Cavity Drainage Membrane and the wall. Perimeter drainage channel manages the flow of the water through to a suitable drainage point or sump pump. Prior to installation of the Type C Cavity Drain Membrane, an application of Koster Polysil TG 500 anti-lime surface primer was applied to all new concrete surfaces. When new concrete forms there is a risk of excess free lime and mineral salts leaching out during the curing process. When a cavity drainage system is used in this type of application, a pre-treatment of the concrete is used to reduce the risk of free lime build up and blocking of the drainage cavity and perimeter channel.

Ventilation Systems

The Waterproofing Design Specialist recommended that adequate ventilation and heating must be specified in the overall basement conversion in accordance with Part F of the Building Regulations.

Sump Pump System

A Delta PowerMaxx battery back-up and AlertMaxx2 Wi-Fi enabled alarm was installed to complement the system. A Delta Dual V3 sump pump system was installed to keep the area underneath the building dry and to prevent it from flooding. The sump pump’s job is to pump the water out of the pit and away from the building so the basement stays dry.

Case study review

Timberwise transformed what was a damp unused basement into a dry habitable living area. The customer was left fully satisfied with the end result. Having installed the system Timberwise provided the customer with a 10 year guarantee giving long term peace of mind.

Delta win ASUC Award for Innovation and Sustainability

Building Products Index Ltd January 4, 2018 Waterproof Membranes, waterproofing Leave a Comment

View the Delta Membrane entry on BPi

Visit the Delta Membrane website

On Friday 24 November 2017, David J. Symes and Paul Green of Delta Membrane Systems Limited had the pleasure of attending the ASUC (Association of Specialist Underpinning Contractors) yearly AGM and Awards ceremony held at Cafe de Paris, London.

Simon Haslam, ASUC Chairman commenced the AGM and Awards ceremony by welcoming all. John Patch gave the ASUC AGM update, followed by Simon updating members on another busy and full year.

Guest speaker Eddie “The Eagle” Edwards thanked speaker sponsors and awards were given.

The last award of the ceremony was announced for Innovation and Sustainability, a category not usually associated with the Association of Specialist Underpinning Contractors, but it was felt that Delta Membrane Systems Limited, a member of ASUC who had taken part in the ‘BRE Flood Resilient Home’ project should be recognised for their innovative work in flood remediation.

We were so surprised and absolutely delighted to be recognised and named as winners of the Innovation and Sustainability Award. Yet another great achievement for Delta Membrane Systems Limited!

As a growing and niche business, to win the category of Innovation and Sustainability of the year is a testament of our earnest effort, not only for us as a business but a great achievement to all involved in the flood remedial and waterproofing sectors.
This is the second award Delta Membrane Systems Limited has won this year, having won the PCA (Property Care Association) Innovation and Sustainability Award back in May.

Delta Membrane Systems Limited is also in the running for the prestigious Construction News Specialist Awards for the categories of Innovation of the year (Non-Contractor) and Material Supply of the Year.

Delta Membrane Systems Limited has sought to improve the built environment through research and knowledge generation, to win this award is a great testament to our commitment and dedication.

Christopher Burbridge, Director for Delta Membrane Systems Limited said “Receiving any kind of award is a great achievement; winning one from a great organisation such as Association of Specialist Underpinning Contractors (ASUC) is an achievement we are incredibly proud of. Very few things in life are entirely the work of just one person and this is no exception, so I must pay tribute to the enormous contributions of all Delta staff, without which none of this would have been possible. This award is as much for #TeamDelta, as it is for me and my fellow Directors. The award will take pride in our training suite at our head office in Epping. With so many good projects to choose from, the judges must have had an unbelievably difficult job and I’d like to thank everyone who voted for Delta Membrane Systems Limited to win”.

David J. Symes, Technical Director for Delta Membrane Limited added, “With such strong competition, I really do count myself and the Delta Team lucky to win – but win we did. On a personal level it was a great feeling to collect the award. Travelling home with the award in my hand was an incredibly uplifting experience. Every time I look at the award, I’m reminded of the moment of collecting it. The future looks bright! Well done #TeamDelta”.

ASUC AGM Delta Membrane System Ltd Delta Membranes Waterproof membranes waterproofing

Delta Ground Gas Barrier System

Building Products Index Ltd November 28, 2017 Waterproof Membranes, waterproofing Leave a Comment

View the Delta Membrane entry on BPi

Visit the Delta Membrane website

Brownfield land is a word specifically used to describe land which has previously been used forcommercial or industrial purposes with suspectedor known contamination (such as pollution or soil contamination) or land which has been in close proximity to pollution, hazardous waste or soil contamination.

The Government pledged in April 2017 to unlock Brownfield land to accommodate our housing shortage. Local authorities across the United Kingdom under new legislation now have to produce and maintain up-to-date, publicly available registers of Brownfield sites available for housing locally. These new registers will help house builders identify suitable Brownfield sites instantly, therefore unlocking land for thousands of new homes.

MemTech Gas Membranes

Delta Membrane Systems Limited is delighted to launched a new range of Gas Membranes, our MemTech Gas Protection range are BBA Approved and work in compliance with Building Standards (BS8485:2015, BRE 211.2015, CIRIA 665, CIRIA 735, CIRIA 748 and NHBC Standards) suitable for the protection against dangerous gases and chemicals when building on Brownfield and contaminated sites.

Our MemTech Gas Membranes work in harmony with our waterproofing/damp proofing membranes offering complete reassurance.

MemTech M1

MemTech M1 is a flexible, loose laid proprietary gas barrier for use on sites with Radon (RN), Carbon Dioxide (Co2) and Methane (CH4) ground gas. M1 will also protect against the ingress of Hydrocarbon Vapours where it is separated from the ground e.g. above a block and beam floor. The barrier is manufactured by an extrusion/coating process which

incorporates a two layer low density polyethylene membrane with a polypropylene reinforcement grid and an aluminium foil core. The membrane is extremely flexible for ease of installation and is robust enough to cope with site conditions.

Delta Membrane Systems Ltd. Tel: 01992 523 523
E: info@deltamembranes.com www.deltamembranes.com

MemTech M1 meets requirements of BS8485:2015 and BRE 211: 2015 Radon: Guidance on Protective Measures for New Buildings and Code of Practice for the Design of Protective Measures for Methane and Carbon Dioxide Ground Gases for New Buildings.

MemTech R1

MemTech R1 is a flexible, loose laid proprietary gas barrier for use on sites with Radon (RN) ground gas. The barrier is manufactured by an extrusion/coating process which incorporates a three layer, low density polyethylene membrane which is reinforced with a polypropylene reinforcement grid. The membrane is

extremely flexible for ease of installation and is robust enough to cope with site conditions. R1 meets the requirements of BRE 211: 2015, Radon: Guidance on protective measures for new buildings.

R1 Gas Barrier will also protect against damp
and therefore will act as a DPM in
accordance with CP: 102:1973, section 2 and BS: 8000-4:1989, and National Building Regulation Approved document C.

MemTech LGB

MemTech LGB (Liquid Gas Barrier) is a ready for use specialist styrene butadiene latex based liquid applied gas membrane. It offers a simple, continuous passive gas prevention barrier against the ingress of Methane, Carbon Dioxide, Radon, Ground Gas, VOC, air & Moisture into buildings. LGB also acts as a waterproofing membrane complying with C2 and C4 schedule 1 of the Building Regulations 1991 for England and Wales. MemTech LGB meets the requirements of

BS8485:2015.

MemTech Void Vent

MemTech Void Vent is a cuspated HDPE core with a geotextile filter/separator bonded to a single side, in either 25mm or 40mm depth. MemTech Void Vent provides a means of ventilation when used in conjunction with an approved Gas Protection Barrier, in accordance with the recommendation(s) contained within NHBC Guidance and BS8485:2015. MemTech Void Vent 25 is optimised for maximum strength and performance. MemTech Void Vent 25 is independently tested and verified by UKAS accredited bodies.

MemTech Titan

Titan is a multi-layer flexible polyethylene membrane (a Gas and Hydrocarbon Barrier), with a unique core component which is designed and manufactured to provide a barrier to the most aggressive chemicals and to comply with current guidance on Hydrocarbons. Manufactured using the latest extrusion technology, this membrane is suitable in applications that are affected by Hydrocarbons. There is a common misconception that monolithic polyethylene barriers, such as HDPE and LLDPE are effective barriers to resist Hydrocarbons. This is an incorrect assumption, as Hydrocarbons will readily permeate through monolithic polyethylene barriers. Titan is specifically designed and manufactured to perform as a Methane, Carbon Dioxide, Radon, Ground Gas, VOC, air & Moisture and Hydrocarbon protection system. Titan complies with the latest codes of practice as published by BRE, CIRIA (C748) and BSI (BS 8485:2015). Suitable for use as Ground Gas/Hydrocarbon protection for NHBC GREEN, AMBER 1, AMBER 2, and RED site characterisations.

For help on the MemTech range of Ground Gas Protection, please contact Delta Membranes’ Technical Team on 01992 523 523 or email: info@deltamembranes.com.

damp proofing membranes delta membrane gas membranes MemTech Gas Membranes MemTech LGB MemTech M1 MemTech R1 MemTech Titan MemTech Void Vent waterproofing

Waterproofing of contiguous piles

Building Products Index Ltd July 25, 2017 Waterproof Membranes, waterproofing Leave a Comment

View the Delta Membrane entry on BPi

Visit the Delta Membrane website

Delta Membranes waterproofing design

Contiguous piles have many advantages in the formation of a retaining wall. This method of construction involves the creation of a line of deep bores that are then back filled with concrete. The advantage of this method of construction is that it is possible to support the adjacent structure before bulk excavation takes place. Contiguous piles are particularly suited to sites with restricted access.
Of all the methods of piling it is typically the most cost effective and least time consuming. The wall consists of individual piles typically installed at centres 150mm greater than their diameter. This means that there are gaps between the piles and therefore contiguous piles are suitable only where the groundwater table is permanently below excavation level.

Even above the water table, below ground structures can be subject to water pressure. Surface water run-off, perched water tables and defective water mains can all lead to significant water ingress. It is very important that the below ground structure acts as the first line of defence from a waterproofing perspective.

The waterproofing of contiguous piles can often be challenging. It is not possible to rely on a waterproof additive in the piles themselves. Likewise it is not possible to waterproof the pile externally.

Cavity drainage membranes are the most reliable and effective method of waterproofing basement spaces however when used as the only waterproofing system with contiguous piled walls, special attention is require. It is important to minimise the workload of the groundwater drainage system and any pumps. Also it is crucial that earth from between the piles does not wash out into the drainage system and cause blockages.

It is therefore important to maximise the structural water tightness of the wall, this can be achieved using a poured or a spray concrete liner in front of the piles

New build residential

In recent years the structural warranty providers have begun to recognise the importance of effective waterproofing design. NHBC in chapter 5.4 states that where grade 3 protection is required where “below ground wall retains more than 600mm, measured from the lowest finished floor level, the waterproofing design should include a combination of two of the Types of waterproofing systems”

This secondary waterproofing system would need to be internal, again it would not be possible to waterproof the outside of the piles.

Koster NB1 is a high performance migratory crystalline slurry that not only acts as physical barrier but also acts to waterproof the substrate itself. The NB1 slurry can be spray or brush applied to a concrete liner wall formed in front of the piles and continued across the structural slab before the installation of the cavity drainage membrane.

An alternative would be to use the Delta Dualproof membrane. This is a pre applied external waterproof system but is suitable in this application as it can be “sandwiched” between the piles and a poured concrete liner. The face of the piles would need to be levelled before application by filling the cusps with mortar before the DualProof is applied. A concrete liner wall is then cast onto the DualProof waterproofing barrier.

Capping Beam

A concrete ring is formed at the top of the piles in order to link them together. This is typically larger than the piles and will extend into the building space. This will also need to waterproofed if it is below the external ground level. Koster NB1 mineral slurry can be used to effectively waterproof the ring beam.

The Delta Membrane System Limited’s Technical Team offer an on hands approach to help with the waterproofing designs for any project.

cavity drainage membranes Contiguous piles Delta Membranes Waterproof membranes Waterproofing of contiguous piles

Catalogue highlights basement pumps and drainage

Building Products Index Ltd January 24, 2017 Waterproof Membranes, waterproofing Leave a Comment

View the Delta Membrane BPi entry

Visit the Delta Membrane website

Transforming damp and dingy basements into comfortable living spaces is becoming more and more popular – thanks in no small part to the extensive range of products offered by Delta Membrane Systems. Many of these products now feature in a new catalogue from the company.

Over the years Delta has earned a reputation for being the ‘one stop shop’ for all
things needed in basement refurbishment and new-build. This includes a wide range of sumps, pumps and control technology – all of which is featured in the new brochure.

This 36-page publication also features the company’s drainage channels and fittings, as well as giving a standard pump overview, and details of pump performance.

Useful information on pipework, commissioning and installation is given along with service and maintenance procedures. All the data is further enhanced by two-dimensional diagrams, three-dimensional cut-away photography, and performance graphs showing the technical information on many of the electrical products.

Frequently asked questions are also listed along with the company’s responses.

The expert team within Delta Membrane Systems is known for giving sound advice and solving potential problems. This catalogue gives a ready reference to enhance the expertise available from the company. Download now, click here! Or view on our website here…

basement pump Basement pump and drainage catalogue delta membrane drainage channels

BRE to showcase Delta System 500 in new flood resilient home

Building Products Index Ltd November 10, 2016 Waterproof Membranes Leave a Comment

View Delta Membranes entry on BPi

Visit Delta Membranes website

Delta are working together with the BRE to demonstrate how the Delta system 500 can be an invaluable contributor to flood resilience helping homeowners limit damage and recover quickly from flooding.

Flood resilience
Flood resilience refers to measures that reduce flood damage to buildings in situations where water is allowed to enter. View case study

“Back in Sooner” – Floods Minister Therese Coffey shows Good Morning Britain what features can be installed to restore flood damaged properties and get residents back in to their properties sooner.

‘There are an estimated 5.2 million homes considered at risk from surface, river and coastal flooding. Preventative measures play a key role but given the scale of our vulnerability, we need to think more practically about flooding and start to adapt to ‘living with water’ says Stephen Garvin, Director of the BRE Centre for Resilience. So fitting a house with resilient technologies and testing its ability to bounce back from water ingress is the first step on this journey.’ Read more

Flood recovery

The Delta System 500 can also be used for flood recovery where flood damaged buildings are restored and residents can be reinstated back into their home quickly as well as protecting the property from future groundwater ingress. Take a look at our case studies below, restored using the Delta System. View case study

coastal flooding Delta Membranes Delta System Delta System 500 flood recovery flood resilience

The MaxxConnect Family™– Maximum security for your basement waterproofing system

Building Products Index Ltd April 27, 2016 waterproofing Leave a Comment

View the Delta Membrane Systems entry on BPI

Visit the Delta Membrane Systems Website

With the new additions to the ‘Maxx’ family, Delta Membrane Systems offer a range of products that bring to the market the most secure basement pumping systems for type C (cavity drain) waterproofing.

Specifically designed for the basement pumping industry, ‘Maxx’ technology takes an ‘intelligent’ approach in the design of the product range, resulting in optimum functionality, high levels of efficiency and ease of installation and service.

Included in the range is the established AlertMaxx high level alarm to alert you in case of pump failure. This unit is offered in two variants – the DMS270 for ground water and surface water applications, and the DMS269 for foul water use.

This model has been joined by the PowerMaxx battery backup which can run up to 2 standard V3 pump without mains power for up to four days, depending on the number of cycles per hour. It can sit in standby mode for over three weeks, and is virtually inaudible.

Two pumps are directly fed through PowerMaxx. If mains power failure occurs the pumps automatically take power from the PowerMaxx which will have been fully charged during mains operation. PowerMaxx will automatically recharge when mains power returns.

This free-standing unit can be installed in any dry ventilated area, and is fitted in the main power line between the pumps and their electrical spurs, eliminating the need for additional electrical spurs.

Completing the line-up is the MessageMaxx telemetry system which, combined with AlertMaxx, gives remote monitoring when residents are away from the property. Messages are sent using GSM technology, usually in text format.

All of these models are ideally suited to the range of pumps offered by Delta Membrane Systems, making the company a ‘one stop shop’ for pumping packages and type C waterproofing systems.

Alert Maxx Delta Membranes MAXX Connect Family MessageMaxx PowerMaxx battery

Sopralene Optima – The new extreme performance capsheet from SOPREMA!

Building Products Index Ltd September 30, 2015 waterproofing Leave a Comment

View the Soprema entry on BPI

Visit the Soprema website

The highlight of SOPREMA’s defined range of high performance waterproofing is the introduction of SOPRALENE OPTIMA, this membrane.
Sopralene Optima stands out from other SBS modified bitumen membranes because of its bespoke bitumen blend, optimum adhesion and resistance to extreme temperatures down to -30 ° C. This gives the product excellent ageing characteristics and the coloured ceramic granules give the membrane a particularly striking aesthetic appearance.
Overall, Sopralene Optima is a unique and versatile product that is easy to install in both summer and winter.
Elastic and flexible down to -30 ° C
Longevity recognised for over 40 years
Optimum adhesion & easy installation
Exceptional dimensional stability
Superior cold-bend performance
Attractive Finish

Email info@soprema.co.uk to request a copy of SOPREMA’s new Official Waterproofing Guide, including specification information for SOPRALENE OPTIMA.

Bespoke bitumen blend coloured ceramic granules Elastic and flexible Sopralene Optima Soprema

The Great Escape – Delta Membranes Basement Tanking Systems

Building Products Index Ltd May 25, 2015 Basement damp proofing, Dampproofing, DPC, Membranes, waterproofing Leave a Comment

View the Delta Membranes entry on BPi

Visit The Delta Membranes Website

The Great Escape – Delta Membranes Basement Tanking Systems

When converting a basement into a home cinema with a military theme for the internal decor, the fact that there is an emergency tunnel attached leading to a World War II air raid shelter, and then out to the garden, only adds to the dramatic atmosphere.

That is exactly what specialist contractor Stuart Barr found itself dealing with at a property in Bedfordshire, and Delta Membrane Systems played a leading role in the story by supplying a wide range of materials and products.

In the original design, the door opening onto the tunnel was to be blocked, and the basement room tanked and refurbished ready for the cinema. However, it was then thought of as an asset to the overall ‘feel’ of what was trying to be achieved, so the tunnel and shelter became an integral part of the project.

The cast list of products supplied by Delta included MS500 – a studded damp proof membrane that can be used on walls, floors and vaulted ceilings. It can support a dry lining, screed or flooring in a wide range of situations.

Delta Membranes Tanking Systems

The membrane is placed dimple-side to the surface, and this allows any moisture to drain by gravity to a channel in the floor, which then runs to a sump and pump device to evacuate the water to the outside.

It is resistant to water and water vapour, and to salt transfer, as well as puncture, impact and loading. The membrane will not be damaged by normal foot traffic during installation, or while laying concrete or screed finish.

Taking a leading role in the project, Delta MS20 is a compression-resistant, durable dimpled sheet made from special high density polyethylene. As its name suggests, this heavy gauge version of Delta MS has deep 20mm studs, and is used where a larger flow rate is required.

Completing the list of membranes supplied by Delta, Delta-PT is a high performance polyethylene membrane which is extruded into a series of studs. These studs create a continuous air gap behind the waterproof membrane.

On the face of the membrane is a welded mesh that allows plasters and renders to bond efficiently to achieve dry and durable finishes.

Delta-PT is watertight, resistant to high a low temperature extremes, and is chemically resistant to acids, alkalis, oil and solvents.

Delta Tanking Systems Three sump and pump units have been installed at strategic points in the scheme. The Delta Dual V3 Sump Pump units are packaged pump stations designed to collect ground water via perimeter channels or 110mm pipes and/or clear openings to the top of the chamber.

Specifically designed for below ground applications, the pump stations feature chambers made from HDPE and able to withstand hydrostatic forces encountered in applications with high water tables.

Making a cameo appearance was Köster NB1 Slurry – a watertight mineral surface coating with crystallising agents. Waterproofing layers made from NB1 possess excellent pressure and abrasion resistance, and have been tested in accordance to the potable water guidelines.

At one time, a couple of canoes had been stored in the air raid shelter. There was so much water in the room when it was discovered, that the canoes were floating – which, if nothing else, proved their water tightness.

Delta Waterproofing Membranes

Not only have the canoes been moved, but so has the water. The expertise of personnel from waterproofing specialist Peter Cox, and the main contractor Stuart Barr, combined with the dependability of the Delta product range, has ensured that cinemagoers in a Bedfordshire basement will be able to enjoy the main feature in a dry, comfortable environment.

Newton Systems Used To Waterproof The Royal Courts of Justice

Building Products Index Ltd May 20, 2015 waterproofing Leave a Comment

View the Newton Waterproofing Systems entry on BPI

Visit the Newton Waterproofing Systems website

Newton Specialist Basement Contractor Stonehouse Basements were commissioned to waterproof a second phase of the Royal Courts of Justice following the success of the waterproofing of the vaulted Victorian arches they undertook a few years ago.

Stonehouse installed Newton 508 Mesh cavity drain membrane to the vaults in the Judges’ Robe Rooms. This required great expertise as the membrane needed to be lapped and sealed carefully to fit the vaulted areas. The meshed membrane could then be plastered to directly.

Newton System 500 ‘Type C’ water management system was very suitable for this project as it is deemed “reversible” so meets strict Listed Building requirements

“We were delighted to be involved in the second phase of this development, following the success of the first phase a few years ago” – Graham Stone, Stonehouse Basements.

500 type c water management system Newton 508 mesh cavity drain membrane Newton Waterproofing Systems Royal courts of justice Stonehouse basements

← 1 … 6 7 8