Mapei UK Unveils ‘Seal the Envelope’ - Integrated Building Envelope Solutions For ECO4 Retrofit And Refurbishment

Mapei UK announces the official launch of ‘Seal the Envelope’, a comprehensive initiative designed to transform retrofit and refurbishment projects across the UK. This campaign brings together Mapei’s extensive expertise and product portfolio, offering a fully integrated building envelope solution that spans from the foundation to the roof.  

A System-First Approach for Modern Retrofit 

‘Seal the Envelope’ addresses the critical need for structured, compliant refurbishment systems in today’s construction landscape. Mapei’s system-first philosophy eliminates the risks and inefficiencies of fragmented solutions by delivering a coordinated, logical approach to every layer of the building envelope. The campaign empowers professionals to specify and deliver holistic solutions that ensure clarity, compliance, and technical excellence. 

Complete Building Envelope Coverage 

Mapei’s initiative covers every element of the building envelope with compatible, high-performance products from Mapei and its specialist brands, Wykamol and Polyglass. Key system components include: 

• Roofing: Polyglass bituminous membranes (torch-applied or self-adhesive), 

cold-applied liquid and single-ply systems, tested to BroofT4 standards. Options 

include A class fire-rated insulation and green, brown, blue or biosolar solutions. 

• External Wall Insulation: BBA accredited EWI systems, incorporating EPS or 

Mineral Wool applied on various substrates covering most sectors’ requirements. 

• Internal Wall Insulation: ISO-Therm panels, dedicated adhesives and breathable 

coatings for improved comfort and performance. 

• Damp & Gas Protection: Wykamol barriers, DPCs and cavity drainage systems to 

safeguard structures. 

• Substrate Treatments: Primers, waterproofers and injection systems for 

stabilizing and protecting aged building fabric. 

• Specialist Coatings: Solutions for balconies, walkways, podium decks and car 

park areas. 

• Foundation and Basement Tanking: Complete waterproofing and protection 

systems for below-ground applications. 

Aligned with Warm Homes government funded initiative and Future-Ready The campaign is fully aligned with the UK’s Warm Homes retrofit scheme, supporting government goals to reduce fuel poverty and carbon emissions through energy-saving measures. Mapei’s integrated systems are designed to support PAS 2035 and TrustMark-aligned installations, ensuring partners are equipped for both current and future regulatory requirements. All solutions are backed by full technical documentation and system specifications. 

‘Seal the Envelope’ unites the trusted brands of Mapei, Wykamol and Polyglass under one consistent message and system logic. This approach strengthens trust and credibility, making it easier for partners to promote and specify holistic solutions in a compliance-driven market. 

Official Launch 

The ‘Seal the Envelope’ campaign will be officially launched at the Mapei World London City Specification Centre, Great Sutton Street, with a supporting CPD presentation to follow. Mapei invites all industry professionals to explore the initiative, access the resources, and join in delivering safer, more efficient and sustainable buildings across the UK. 

You can find out more about Seal the Envelope initiative at: www.mapei.co.uk/sealtheenvelope 

For more information, please contact: info@mapei.co.uk or visit www.mapei.co.uk