It is possible to walk on it occasionally (preferably with flat-soled shoes) during maintenance work, but be careful not to pierce or tear the membrane with sharp or heavy tools or objects.

Cold applied bitumen membranes usually comprise of fibre or glass fibre and bitumen and are bonded with a suitable cold adhesive of brushable consistency. Our premium waterproofing system utilising the latest manufacturing technology utilising both APP + SBS modified bitumen. Climates around the world are becoming more extreme with increased rainfall and above average temperatures.

Avoid carrying out waterproofing work in autumn, winter or spring when the weather conditions are sometimes too uncertain. Self adhesive membranes are ideal for the diy market for application on small roofs, garages, sheds. If the roofing of a flat roof is in bad shape and leaks occur regularly, it might be necessary to replace the roof. Enlisting an experienced commercial roofing contractor is essential for the technical nature of installing a mod bit roofing system. Green roofs are environmentally friendly as they help to remove harmful particular matter from the air.

Class 5E can be used for the top layer and is already provided with a surface protection in the form of mineral granules. Compared to traditional fiber-based felts, these cutting-edge felts are less prone to rapid aging, brittleness, and damage caused by weathering. The number of coats should be appropriate to the waterproofing requirements and anticipated traffic, but will usually be two coats, a minimum 20mm thick over an isolating membrane of type 4A black sheathing felt to BS747.the sheets should be laid, starting from the bottom, laying progressively up the slope of the roof so that water will not run into the joints of the laps. Felt roofing consists of many layers to provide optimum waterproofing whilst remaining breathable and looking good.