Our windows and doors are heat welded together at the joins, so the PVC is melted together into one single structure, therefore water is unable to pass through the welded structure as is possible in aluminium window joints.
There is also two layers of rubber gasket seals. This double seal will ensure no leakage will occur. Our rubber gaskets are produced from the same rubber used to seal windscreens in the automobile industry, so you can be assured that they will do their job efficiently.