Introducing Asbestoseal

This is Asbestoseal, the BBA Approved asbestos roof coating system from Liquasil Ltd.

Made in the UK, Asbestoseal is a system comprising a corrosion treatment for the metal fixings, a sealer for any cracks and holes and of course, the roof coating itself.

Here’s a quick video showing Asbestoseal being applied by roller to an asbestos roof by a Liquasil Approved Installer.

Asbestoseal Installation Procedure

The Asbestoseal system is designed specifically for industrial and commercial roofing application and is for professional use only.

Made specifically for asbestos roofs, the system completely encapsulates the asbestos cement substrate to provide a highly water resistant and water  repellent surface, that is impervious to fungal growth, meaning an end to unsightly moss and lichen.

The first stage is to change any defective roof lights if defective. This helps reduce water ingress during the cleaning process.

Each of the metal fixings is then treated with Liquasil’s SWT Corrosion Primer, a wet and surface tolerant rust treatment that can be applied directly to wet rust.

Each of the fixings, together with any small holes and cracks are then sealed with Liquasil Non-Sag Sealer, a highly thixotropic silicone compound that adheres to the treated metal and the asbestos cement to form a permanent seal against water ingress.

One roofs with shallow pitches that are susceptible to wind-blown water ingress, we recommend that all overlaps to the roof sheets (vertical and horizontal) are sealed with Non-Sag Sealer.

The final stage of the installation is to apply Asbestoseal to the entire surface of the roof.

The BBA Certificate for Asbestoseal confirms a life expectancy in excess of 25 years, so you can be assured that this coating system is robust and fully tested and certificated.


We have many examples of Asbestoseal installations, but here a few images of recently completed projects using this system.

Asbestoseal is available in any RAL colour.


Done properly, with the correct product, an asbestos roof coating will last many years.

Asbestoseal is the first asbestos roof coating to gain certification from the only independent UK construction materials inspection body, BBA (British Board of Agrément).

Budget around £35 per sq metre for an installation of up to 1000 sq metres, with costs possibly reducing for larger installations.


If you are interested in using the Asbestoseal asbestos roof coating system, please call 0121 709 5352, where one of our building surveying team will be able to provide you with more information and provide you with details of Liquasil Approved Installers closest to you.

If you would prefer to get an independent assessment of your asbestos roof, please call 0121 711 7110 and we’ll be happy to arrange a survey of your roof, or if you prefer, an initial free assessment from photographs you provide.

Commercial Property Surveys Ltd

Unit 3 Radway Industrial Estate
Radway Road
West Midlands
B90 4NR

Tel: 0121 711 7110

Liquasil Ltd

Unit 8 Radway Industrial Estate
Radway Road
West Midlands
B90 4NR

Tel: 0121 709 5352

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