Keeping Your Building Envelope Safe

The three main characteristics which are important to the long-term protection and performance of the roof or wall are MVTR (Vapour Permeability), water holdout and airtightness. Proctor Group membranes have been tested quarterly for 12 months during 2019, with all of the above factors tested periodically. The results showed the membranes main attributes are robust enough to maintain performance in all categories, preventing the expense of stripping and replacing when sites open again. We are confident of their long-term durability and robustness, and the results proved interesting, especially in the current climate, where a lack of finished roof covering or rainscreen façade may leave these membranes exposed for longer periods

Roofshield roof tile underlay was tested after 9 months exposure, and still passed the European water hold of a W1, to EN 13859 Part 1. It maintained its vapour permeability consistently over a 12-month period.

Wraptite, a fully self-adhered, airtight, vapour permeable underlay for walls and roofs maintained its vapour permeability and airtightness throughout the year. Its water hold-out for walls of W2 also remained for 12 months, which was tested to EN 13859 and W1 for over 6 months.

Roofshield and Wraptite show their pedigree, durability and they rise to the challenge of protecting our structures in times of site delays. They both maintain the key characteristics for the life of the building when the final covering is applied when sites reopen across the country

While all appreciate that Breathable Membranes are designed for temporary protection and good practice is always that the outer covering is installed as soon as possible, it is comforting to know the building is kept safe while you keep safe.