Zero leaks. Zero odour.
Zero disruption.

The complete solution in roof liquid waterproofing for every need and budget.

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Elastaseal Z uses innovative technologies to deliver a fast application on existing roofs with weathered, worn or damaged substrates and gets its Z from its zero odour, zero leaks and zero disruption benefits.

Elastaseal Z is a leading liquid roof waterproofing solution that offers a safer, more user-friendly experience for sites where fumes can be hazardous, such as schools, pharmaceutical and food/beverage manufacturing sites, hospitals, commercial offices and retail units.

Available in 10, 15, 20, 25 and 30 year systems, Elastaseal can provide long-lasting protection in as little as 2 coats and delivers a breathable, seamless finish that can also improve the thermal performance of roofs when used as a BUR solution with the appropriate insulation. Adding to its list of features, Elastaseal Z can also be applied as a wet-on-wet system, dramatically saving time and costs for clients.

The Elastaseal Z cold liquid system is ideal for roof refurbishment projects as well as new builds. The system is compatible with the majority of existing roof membranes and is particularly beneficial as a long-term solution to commercial buildings with leaking flat roofs.

During the free site survey, we will consider the following:
- The condition of the existing membranes, taking core samples to determine moisture levels.
- Whether the roof is suitable for overcoating.
- The termination details required to achieve a watertight system.

The Elastaseal Z warm roofing system provides long-term waterproofing and a thermal upgrade to improve comply with the building regulations Part L. Once installed, the system helps lower energy costs by conserving heat within the building.

During the free site survey, we will consider the following:
- The condition of the existing membrane and it’s suitability for a thermal upgrade.
- Whether the existing roof membrane requires a vapour control layer
- We will take core samples to determine the build up of the roof and the presence of moisture.
- We will carry out U value calculations to determine the thickness of insulation required and provide a condensation risk analysis.
- We will discuss the type of warm roof required e.g. flat insulation boards or a ‘cut to falls*’ scheme which will guide rainwater into the drainage system.
- We will provide out a wind uplift calculations to ensure that the roof is fixed adequately.
- We will agree termination details required e.g. watercheck or drip trims to manage to roof drainage.

In the Elastaseal Z inverted roofing system, the waterproofing membrane is applied directly to the existing roof and the insulation and filtration layer is applied above. The roof design is finished with paviours, sedum or other options to improve the functionality of the roof creating roof gardens, terraces or private balconies. The system’s seamless nature provides maximum protection and helps lower energy costs by reducing heat loss from the building.

During the free site survey, we will consider the following:
- The condition of the existing membranes.
- Core sampling to assess the roof build up and moisture levels.
- Determine if it’s suitable for overcoating.
- The type of surface design you want to achieve with your project.

Need more technical information? View Datasheet Centre

Why choose Elastaseal Z

Odourless system

The zero solvent odour formula prevents disruptions to day-to-day operations.

Fast installation

Wet-on-wet application techniques dramatically reduce installation times.

Waterproof barrier

A seamless, joint-free waterproof barrier that allows water to run away freely.


A durable system providing flexible and tough protection with BBA Accreditation.


Applied in a single operation means labour costs are significantly reduced.


Our 30-year system option delivers a cost-effective, high performance solution.

Online CPD Learning? We've got it covered.

We’ve adapted our accredited CPD training from on-site sessions to free online courses, so you can continue your learning in a socially distanced environment. So, if you’re a specifier, building manager or architect looking to use their time wisely, we’ve got it covered.


At Tor Coatings, we have been creating protective coatings for every surface since 1975 and we’re passionate about delivering the results you want, the way you want them, which is why our service doesn’t just end when your project ends. Whether you’re a specifier, surveyor or building manager, you can be safe in the knowledge that when you choose Tor products, you’ll receive a high-quality, long-lasting system, outstanding service and complete peace of mind throughout your project and beyond.

All of our roofing systems are covered by our comprehensive no quibble warranties. Each scheme is also covered by an insurance backed policy which we pay for* and by no quibble, we mean just that. If you experience complications with any aspect of your project following completion, our experienced team of site specialists will work with you to resolve any issues quickly and efficiently. No challenges, no problems, no fuss. That’s our promise to you.

* subject to underwriters terms and conditions

“We were very pleased with the work done to our Early Years roof thanks to the professionalism of Tor Coatings and our contractors Sterling Roofing. Everything was explained to us about the product and the application, all of the work was completed before the estimated time, and the site was left clean and tidy. The back‐up and warranty from Tor Coatings was another reason for us choosing them for our project.”

Andy Mercer, Early Years Centre

“Colliers International have worked with TOR Coatings across a range of flat roof repair projects within the greater London area, and have been impressed with both the quality of the products provided and level of service received. TOR have been involved from project inception through to practical completion, attending site inspections as regularly as required. Warranties are also issued in a timely fashion, following completion of the works.”

Rob Worton, Colliers International

Project Profiles

Temperate House

  • Kew Gardens, Richmond Upon Thames, London.
  • Category: Roofing
  • Product: Elastaseal Z
  • Sector: Public Attraction
  • Roof Type: Gutters
  • Guarantee: 20 Years
  • Coverage Area: 1,200m2
The spectacular Grade I-listed Temperate House in London’s Kew Garden is the largest Victorian glasshouse in the world. It first opened in 1863 and is home to over 10,000 plants, including some of the rarest species found in temperate regions around the world. The Temperate House attracts over one million visitors annually.

Benson House

  • Wellington St, Leeds
  • Category: Roofing
  • Product: Elastaseal Z
  • Sector: Offices
  • Roof Type: Inverted
  • Guarantee: 25 years
  • Coverage Area: 5000m2
Benson House at 33 Wellington Street in Leeds was originally occupied by accounting firm Price Waterhouse Cooper for over 20 years. After their move in 2016, Benson House was acquired by law firm Walker Morris to see all 500 members of their staff under one roof, becoming the biggest single site law firm outside of London.

Hard Rock Cafe

  • 18 George Street, Edinburgh.
  • Category: Roofing
  • Product: Elastaseal Z
  • Sector: Hospitality
  • Roof Type: Flat, exisitng bituminous felt & mastic asphalt
  • Guarantee: 25 Years
  • Coverage Area: 5000m2
No. 18 George Street in Edinburgh is home to the world famous Hard Rock Café. The US restaurant chain began trading at the site in the late nineties, with the upper floors of the building being used as commercial office space.

How we will work with you


Free Survey

Our site surveys are FREE. Our first step is to listen, to learn and to collaborate. One of our highly experienced Area Business Managers will meet with you to discuss your project and undertake a free survey of your roof, noting any issues and defects to ensure every aspect of the project is clearly understood and documented thoroughly.

Book a free survey

Product Specification

Your Area Business Manager will recommend professional contractors to complete your installation. A detailed, bespoke written project specification will then be issued including CAD drawings as required. This specification explains how every detail of the roof will be tackled. Your Area Business Manager will always be be on hand to answer any questions you might have.



Your Area Business Manager and our technical service team will be there to monitor the various stages of your installation and ensure the project specification is followed correctly. You can be safe in the knowledge that we partner only with contracting companies whose customer service principles and values are aligned with our own.



For added peace of mind, all of our systems are offered with a comprehensive range of no quibble warranties. We are also pleased to offer building owners our insurance-backed guarantee, TorGuard.

A seamless, joint-free waterproof barrier that maximises protection.

Felt Roof

On a 1000m2 roof, the total distance of all joints and seams amounts to a maximum weak point of

1,364 metres

Single Ply Roof

On a 1000m2 roof, the total distance of all joints and seams amounts to a maximum weak point of

652 metres

Elastaseal Z Liquid Roof

On a 1000m2 roof, the total distance of all joints and seams amounts to a maximum weak point of

0 metres

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Coronavirus update: Please note that we are still open for business and following the latest government advice on safe working.