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

Building Products Index Ltd September 28, 2021 Membranes, Waterproof Membranes, waterproofing Leave a Comment

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View Decks, Terraces and Green Roof Technical Drawings

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.

As 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.

There 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.

Delta 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

Building Products Index Ltd June 25, 2021 Cavity Drain Membranes, Membranes, Waterproof Membranes Leave a Comment

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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

Fire-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.

What 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

These 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 3^rd 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.

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Delta adjusting and adapting to the “New”

Building Products Index Ltd April 17, 2020 Waterproof Membranes Leave a Comment

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We are continuing to operate through the lockdown, surprisingly there are still lots of projects which require critical equipment, such as our drainage systems to ensure homes are maintained during this unprecedented period.

We are committed to providing a service that’s as close to ‘business as usual’ and our #TechnicalTeam have adjusted incredibly well to working remotely. Surprisingly Delta has received an increase in online traffic.

We’re at the helm of shifting all things waterproofing online. To help keep your projects moving, we have now introduced real time software to enable our Technical Team to offer Video Conferencing, CPD Seminars, Training Workshops, document exchange and to ensure we maintain our approachability and the ability to collaborate with your entire team, no matter where they are.

Our #TechnicalTeam can support you with:

Waterproofing Design
Flood Resilience, Resistance and Recoverability Design
Ground Gas Protection Design
Ground Gas Protection and Waterproofing Design
Specifications
Correct Product Selection
Best Practice Guidance
RIBA and CIWEM Accredited CPD Seminars
Training and Guidance.

There are currently some exiting ideas being discussed on Delta’s platforms, as we step into and become accustomed to our new reality.

Saving lives during the COVID-19 pandemic, is top of everyone’s agenda at present and we all must do what we can to support the Government, our NHS, colleagues, family members and the Delta Community.

At this time of uncertainty, we’d like to thank you, our customers for your continued understanding as we work hard to maintain ‘business as usual’.

We will continue to post on our social channels, so please follow us and we’ll share some things to lift your spirits, whilst keeping to best practice advice and guidance. Our online CPD is available on our website, as are our “how to” video guides. We are planning on taking this opportunity to broaden our Brochure Suite with the introduction of new materials and to roll our new products – watch this space!

Set your shoulders, lift your chin – we’ve got this.

Stay well

Chris, Kevin, David & Brian

Delta Directors

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Design & Build Waterproofing Philosophies for Podium Decks, Buried Roofs, Balconies and Terraces

Building Products Index Ltd January 22, 2020 Membranes Leave a Comment

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Delta’s Technical Waterproofing Consultant and Architect, Michael Vernon considers Waterproofing Design philosophies

There 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.

The trend for outdoor living has led to a market growth in external balconies, large roof/ground floor terraces and patios. As well as adding monetary value to a property, external areas can be aesthetically pleasing, offering a wide range of colours, textures and finishes to a home.

Outside living can also help to promote health and well-being benefits as these extra useable areas for open air living, help to soften heavily urbanised locations and steadily increase the number of green and usable spaces for leisure.

Balconies, roof terraces and patios are part of a trend which is inspired by aspirational and luxury living in suburban and rural areas alike.

When specified with the correct waterproofing systems, all types of installations are possible, however the design needs careful consideration and a CSSW qualified Waterproofing Design Specialist should always be consulted at the earliest opportunity.

The primary requirement of waterproofing design is the prevention of water ingress and the management of water and water vapour movement through and out of a structure. The design ethos for waterproofing podium decks, buried roofs, balconies and terraces is identical to that used in any below ground area of a structure.

There are many different approaches to structural waterproofing. The construction methods will in part contribute to the specification of types of waterproofing systems and may also determine the overall structural waterproofing strategy.

Structural waterproofing falls into 3 categories:

Type A – Barrier Protection

Type B – Structurally Integral Protection

Type C – Drained Protection

With 3 grades:

Grade 1 – Some water seepage and damp are tolerable depending on the intended use

Grade 2 – No water penetration is acceptable

Grade 3 – No dampness or water penetration is acceptable

Successful waterproofing design lies with choosing the most appropriate combinations of structure and waterproofing system to achieve pre-determined performance levels and criteria. In order to design out risk of failure due to less than adequate workmanship, damage or defects on site it is also important to consider practicality and ease of installation, the phasing of the construction process and the scope for testing and certifying during construction.

In summary, it is the duty of the waterproofing designer to assess a variety of factors and variables simultaneously and to come to a logical and balanced decision regarding the design. Working as part of the design team and keeping abreast of changes, revisions and updates to the project is important because these could have a bearing upon the environmental, structural and other stresses that may be imposed upon the waterproofing system and adaptations may need to be made. Ensuring proper training, application expertise, certification and testing procedures on the part of the installing contractor is critical. Whether the proposed construction is warm roof, cold roof, green roof, blue roof or a combination of types the principles stated here will apply in equal measure to achieve a successful long-term outcome.

If you would like to find out about structural waterproofing, damp proofing, ground gas protection systems, flood resilience or installing a Delta System we’re happy to help. Give us a call on 01992 523 523 or email info@deltamembranes.com

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What is Radon and how can we protect our homes?

Building Products Index Ltd November 25, 2019 Waterproof Membranes Leave a Comment

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Radon occurs naturally in the environment. Radon gas is created when natural radioactive uranium slowly decays and can be found in all rocks and soils.

Radon can be found everywhere in the United Kingdom, although certain parts of the UK will have higher concentration levels than others. To check whether you are in a high Radon concentrated area visit https://www.ukradon.org/information/ukmaps.

This radioactive gas is, colourless, odourless and tasteless.

Radon is measured in becquerels per cubic metre of air (Bq m^-3) and specialist equipment is required to detect it.

The average level of Radon in UK homes is 20 Bq m^-3. For levels below 100 Bq m^-3, individual risk remains relatively low and not a cause for concern. However, the risk to health increases as radon levels increase.

Radon can migrate into any building that is built over a source.

If Radon accumulates in a building, it increases the risk of lung cancer for occupants. Radon is the cause of 15% of lung cancers worldwide (World Health Organisation ‘WHO’ 2009) and the main cause of lung cancer in non-smokers and is responsible for over 1100 deaths in the UK every year.

Research published earlier this year has found that radon levels are increasing in buildings and homes due to the changes we are making to building efficiencies (such as energy efficiency). This in turn will lead to an increase in the number of lung cancer deaths attributable to radon exposure.

Technical solutions such as Ground Gas Protection Membranes incorporated into the design of buildings and structures can offer protection to occupants of homes built on contaminated lands and the harmful effects of radon.

Ground Gas Protection Systems can be used on new, retrofit and refurbishment construction although design considerations are more complex on retrofitted projects.

Forward thinking manufacturers, such as Delta Membrane Systems Limited, have sought to test all our products on their safety, reliability, high-quality and gas permeability.

Manufacturing flexibility has never been as important for the construction industry as it is today. The permeability of gas through a membrane is a critical factor when it concerns the ability of the lifetime of a building or structure.

Through extensive research we can state all our Cavity Drain Membrane Systems (CDMs) offer radon protection with a low permeability rate.

Whilst, our MemTech range of Ground Gas Protection Membranes offer complete protection from Radon, Hydrocarbons, Methane, Carbon Dioxide and Volatile Organic Compounds (VOCs).

Thank you for reading our latest news! If you would like to find out about structural waterproofing, damp proofing, ground gas protection systems, flood resilience or installing a Delta System we’re happy to help. Give us a call on 01992 523 523 or email us at info@deltamembranes.com.

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Building materials for safer future

Building Products Index Ltd June 24, 2019 Waterproof Membranes 1 Comment

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David J Symes, Delta’s Technical Director gives thought to fire safety following the findings of the Hackitt Report

The Grenfell Tower fire in 2017 was the deadliest structural fire in the United Kingdom for almost 20 years. Since the Grenfell Tower tragedy, fire has been under public inquiry. May 2018 saw Dame Judith Hackitt present to Parliament and challenge construction, that an urgent and comprehensive review of our building regulations and fire safety was required with immediate effect.

In the wake of 72 people losing their lives, Dame Hackitt called for wholesale culture change in the construction industry and a regulatory system that assigned responsibility and held people to account.

In all, her report contained 53 recommendations and she warned at the time that the industry should not be allowed to pick and choose which to implement; there should be no compromises with people’s safety ever again.

What are Building regulations, and why are they so important?

Building regulations ensure that new buildings, renovations, extensions and conversions both in domestic and/or commercial structures are going to be safe, healthy and high-performing. Regulations also cover specific topics within the built sector: structural integrity, fire protection, accessibility, gas safety, electrical, energy performance, acoustic performance and protection against falls.

Standards which are particularly aimed at basements and below ground structures are: protection against the ingress of water, protection against contamination (including methane, carbon dioxide, volatile organic compounds (VOCs) and radon gas), ventilation, drains, along with others.

Building regulation approval is required for the construction, adaptation and extension of all basements and below ground structures.

How do you apply for Building Regulation approval?

Applying for building regulation approval is a relatively straightforward process. Application can easily be made to [your] local building control team by email or via their online portal.

The Basement Information Centre offers a comprehensive guidance and in-depth analysis on all building regulations related to basement construction, I would strongly recommend this publication to anyone seeking a valuable resource (www.https://www.basements.org.uk/TBIC/Building-Legislation/Building-Regulations.aspx).

EuroClass Fire Resistance Rating

Reaction to fire, often called the EuroClass system gives building products a classification. The ‘Reaction to fire’ classes tests three properties of the building material: spread of fire, smoke intensity and burning droplets. 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. I would strongly recommend any designer, specifier or constructor to check the source of products you are planning to specify, use or install. All manufacturers should be able to provide you with their Product Fire EuroClass rating, CE Mark Certification and Declarations of Performance (DoP) as a minimum.

Fire Safety –The Importance of Fire-Resistant Construction Materials

It is essential for building products to meet a variety of performance requirements. Depending on the type of material and its intended application, specific fire performance properties are tested.

The Building Research Establishment (BRE) offer a wide range of fire resistance testing (from British to European fire test standards) for construction industries for the purpose of complying to UK Building Regulations or for European Classification and CE Marking.

Delta undertook this service many years ago. In fire testing our products we can have a better understand how they perform during a fire. The benefits of these fire resistance assessments allow us to share with designer’s test data to ensure safe future construction.

Fire Resistant Design Considerations in Basements/Below Ground Structures

Important considerations should be given when designing a basement or below ground structure on how it will behave during the event of fire. Whilst a basement is not counted when assessing the numbers of storeys of a property for fire resistance and means of escape, it should be factored into design and be a key consideration. Typically, 30 minutes fire resistance is required for a two-storey house over a basement, which increases to 60 minutes where the number of storeys is four or more.

Designers should consult the relevant approved documents to check requirements related to their specific design and for other housing types.

Fire separation between a basement and upper storeys is required if the height of the top floor is more than 4.5 metres above the lowest external ground level. This situation is only likely to occur in two-storey dwellings if the basement floor level is less than 1.2m below the external ground level or located on a very sloping site.

The walls and floor between garages and houses also require 30 minutes fire separation which also applies if located in a basement.

Ground floor flats or maisonettes with a basement level and direct main entrances require no fire separation over and above typical fire separation between apartments.

Means of escape

Habitable rooms in basements require a safe means of escape. The maximum distance that people must travel, from any point in a building to a place of safety, is usually termed the “travel distance”. A safe means of escape from a basement could be provided by the main staircase of a structure, provided it is protected and connected to a final exit. Alternatively, escape can be provided by an additional stair offering an alternative final exit. Escape through windows is permissible if designed to permit escape as defined by the building regulations.

It is worth noting that non-habitable rooms in basements, such as kitchens, utility rooms and bathrooms can be classed as inner-rooms and depending upon the layout of the structure may not require separate means of escape.

It is permissible to exit into gardens or courtyards, provided they have an exit to a place of safety or are greater in area than the height of the structure.

Thank you for reading our article, if you have a question or would like to find out about structural waterproofing or installing a Delta Membrane System, we are happy to provide CAD drawings and information relating to waterproofing and gas proofing solutions in accordance with British Standard 8102:2009, and 8485+A1:2019 give us a call on 01992 523 523 or email info@deltamembranes.com.

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Reliable BBA Approved Waterproofing products from Delta Membrane Systems Limited

Building Products Index Ltd May 30, 2019 Waterproof Membranes, waterproofing Leave a Comment

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Waterproofing: Factors to consider when choosing building materials

Building Products Index Ltd January 22, 2019 Waterproof Membranes, waterproofing Leave a Comment

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There is a wide choice of structural waterproofing materials available in the market and it can be difficult to determine the best option for your project.

We understand the complexity and competitiveness of the industry and the challenges this brings for manufacturers seeking to improve margins, reduce costs and improve predictability. Whether you’re involved in the specification, procurement and/or installation, we understand the challenges you face including managing financial risks, efficient delivery, or meeting legislative or environmental requirements.

When researching waterproofing materials, you will notice that the price differs widely from manufacturer to manufacturer. Rule of thumb – it is not always advisable to look for the cheapest!

Choose waterproofing materials that will serve you well. With potentially heavy consequences (from hefty fines to imprisonment) for using or specifying products in the UK that do not meet the mandatory legal requirements, it is strongly advisable to check the source of products you are planning to specify, use or install.

All manufacturers should be able to provide you with their CE Mark certification and Declarations of Performance (DoP) as a minimum.

Product Credibility

A BBA Agrément Certificate relates to the quality and performance of a product. Many manufacturers undertake costly and comprehensive assessments of their products, which include laboratory tests, on-site evaluations, quality management checks and inspections of production. If they meet these requirements, they are awarded a BBA Agrément Certificate.

CE Marking is a compulsory legal requirement. By placing a CE mark on a product, the manufacturer is declaring, conformity with all the legal requirements needed to achieve CE marking status. The manufacturer is thus ensuring validity for that product to be sold throughout the EEA (European Economic Area).

Regulation (EU) No. 305/2011 (Construction Products Regulation, or CPR) of the EuropeanParliament and of the EuropeanCouncil is a regulationthat lays down harmonised conditions for the marketing of construction products. Regulation EU No. 305/2011 requires all Cavity Drain Membranes/Cavity Membranes hold the CE Mark and have a DoP. Responsibility for ensuring CE Product marking lies with the EU based manufacturer, importer or distributor of that product.

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Free Lime Inspections made easy with clever New Yellow Channel

Building Products Index Ltd November 27, 2018 Building Drainage, Drainage Leave a Comment

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Delta Membrane Systems Limited – today launch an entirely new product line designed to make channel inspections easier.

With Delta’s new yellow channel ‘free lime’ can easily be identified and treated. Free lime is white in appearance and, with Delta’s new yellow channel this can easily be visualised during inspection.

Delta new yellow channel by a range of accessories such as Straight Connectors, Corner Pieces, T Pieces and Drainage Channel End Caps.

WHAT IS A CAVITY DRAIN SYSTEM?

A Cavity Drain Membrane System is a Type C Waterproofing solution. The concept of a Drained Cavity System is to collect and manage any ground water which breaches the integrity of a structure by managing, collecting and discharging such free water via a suitable evacuation point such as a Delta Package Pump Station.

WHAT IS CHANNEL?

Delta Channel is a water collection conduit designed to control water ingress in below ground applications.

WHAT IS FREE LIME?

In the form of calcium hydroxide (free lime). If untreated, this free lime can enter a cavity drainage system which can impede the flow of water and cause sump pump failure.

BS8102:2009

The British Standard for waterproofing BS8102:2009 recognises the requirement of a Type C Waterproofing System or Cavity Drain Membrane System to be maintainable. The use of inspection ports of a basement waterproofing design is key for maintenance or the ability to carry out periodic inspection.

ABOUT DELTA

Delta Membrane Systems Limited offers waterproofing solutions and systems. We are proudly the Leading manufacturer of Type C Cavity Drainage Systems in the United Kingdom.

We eat, sleep and breathe waterproofing solutions. We represent Quality Products, Innovative Design and Solutions.

Striving for continuous industry improvements our out on the road, regionally based Technical Team act as part of your team, there to support you with any technical queries, training or just to offer advice and expertise on project requirements. Email technical@deltamembranes.com or call 01992 523 523.

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We are delighted to announce Women of Waterproofing have won a PCA Best Practice Award ‘Special Award for Initiative’.

Building Products Index Ltd June 25, 2018 Waterproof Membranes, waterproofing Leave a Comment

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The deserving winners of the 2018 PCA Best Practice Awards were announced on Friday 15 June at the Slate, University of Warwick.

The PCA Best Practice Awards brought together 160 members, contractors, designers and experts for a glamorous evening of celebration, recognition and networking.

After review by the panel of expert judges, Women of Waterproofing won in recognition of them ‘overcoming challenges in an innovative way, offering a solution to ensuring that we are attracting, recruiting and retaining talented women into the full range of roles and at all levels within the structural waterproofing industry and demonstrating engagement with a range of third parties.’

ABOUT DELTA MEMBRANE SYSTEMS LIMITED

Improving the diversity of the people we employ is important to Delta Membrane Systems Limited. We recognise that it is not only right to ensure that people of all genders and backgrounds are able to access fulfilling careers in the waterproofing sector; but that as a business, we fully reflect the society we serve.

As part of Delta Membrane Systems Limited’s commitment to diversity and inclusion, we are working hard to increase the representation of female CSSW qualified Waterproofing Design Specialists.

Our diversity and inclusion strategies include offering unconscious bias CSSW Training at our facilities in Epping, Essex and within our diversity and inclusion five-year plan offering Waterproofing Design Specialist Apprenticeships.

We have also undertaken a range of initiatives aimed at tackling the gender gap, including supporting and sponsoring the Women of Waterproofing Networking Group and unconscious bias training for all staff members across our business.

Christopher Burbridge, Delta’s Managing Director, discusses his pride in the Women of Waterproofing winning this Award: “Leading a business to success can be a tough challenge and as such we are keen to showcase the dedication, expertise and sheer hard work of our team. I would like to wish Georgia and Rachel the best of luck for the future and congratulate them on their win in this prestigious awards programme.”

David J Symes, Delta’s Technical Director concluded, “Both Georgia and Rachel joined Delta from diverse backgrounds to Structural Waterproofing. Both Rachel and Georgia have adapted to their roles and the environment with grace and dedication. We wish them every success as role models for welcoming more females into a male dominated sector”.

Kevin Dodds, concluded “We are incredibly proud to support the Women of Waterproofing. For Georgia and Rachel to have achieved such recognition is an incredibly accomplishment of their efforts. We will continue to support the Women of Waterproofing in all that they do”.

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