Case Study- Wade Deacon School

Address:                   Widnes, Cheshire, WA8 7TD

Main Contractor:       Hightown Group

Size:                          415m2

System:                    Sika Sarnafil G410-18EL Felt, Fully Adhered, S-VAP 5000 ESA VCL, Sikatherm MW DDT Insulation

Our role in the project:

Here at Enviroply Roofing, we installed a warm, fully adhered, Sika Sarnafil roofing system for the development at Wade Deacon High School. The project began on the 01/08/2022.

We began with the insulation layer, which for this project was the Sikatherm Mineral-Wool (MW) dual density (DD) insulation boards. These are tapered to the correct pitch for the roof system, to ensure controlled water run off and proper drainage. The Sikatherm MW DDT is highly rated for its low thermal conductivity and excellent fire performance, making it a great option for the Wade Deacon High School development.

Following the insulation layer, we then installed the vapour control layer. For Wade Deacon High School we used the S-VAP 5000 E self adhesive vapour barrier. This is a multi-layered, self-adhesive option that is made from polymer modified bitumen with a glass-fibre mat reinforcement and an aluminium foil top layer, for maximum performance.

Finally, we completed the roofing system with the installation of the Sika Sarnafil G410-18EL Felt single ply membrane. This is a highly effective option with a lacquered matt finish, a glass fibre reinforcing inlay, and polyester fleece backing for roof waterproofing. This membrane contains ultraviolet light stabilisers and offers excellent fire resistance for a colour stable, low maintenance and durable roofing option. This was fully adhered into position to be held securely in line with manufacturers guidelines.

The result at Wade Deacon School:

The roof was completed on the 23/01/2023. Overall, the installation of the roofing system went well and everyone was pleased with the outcome. The new roof was installed to a high standard, and achieved a 20 year performance guarantee.