Flat Roof Overlay Systems

Not all roofs are suitable for an overlay system and only some roofing materials are able to be used as an overlay.

Flat roof overlay systems.

Liquid applied membranes are seamless and fully bond to the substrate making them ideal for use over waterproofing systems that have failed at laps. As an overlay system the gacoroof roofing system is a perfect example of an overlay system. Overlaying a flat roof or capping a flat roof means that we cover the old flat roof materials with new materials. A flat roof that had been over coated with a liquid based system which itself is breaking down a bonded overlay would not be suitable although with some preparatory works a mechanically fastened overlay system might be an option.

Create a professional look when standard accessories won t work. London flat roofing would then attend the property and carry out the application of the gacoroof roofing system. Roof overlay systems are built on top of an existing roof after some preparation work to provide a new insulative layer and a weatherproof outer protection. Topseal has systems suitable for both these situations.

About roof overlay systems. Unlike others our profiles can be spaced much further apart without detriment to performance and aesthetics. Topseal has a range of fibreglass flat roofing systems including the topseal direct lay system that is specifically designed for the flat roofing. Ideal for flat roof repair and refurbishment projects watch our new rockwool flat roof overlay board video to find out more.

The old flat roof is just used as a base a. Our custom metal roof systems feature internal drainage components to control moisture that migrates into the system and carefully designed joints that allow for controlled expansion and contraction. Flat roof overlay systems.