Flat Roofs

Flat Roofs have been around for a long time but have fallen out of favour on most new buildings due to a concern over the life expectancy of the covering, the necessary maintenance schedule, the cost of replacement and the fear of leaks ruining their belongings.

Flat roofs are not normally totally flat, they have falls built into the roof to shed water into the desired location where the rainwater down pipes are positioned. Flat roofs can be designed to be either ‘cold’ or ‘warm’ in construction and both have numerous design options depending upon roof type and size, span and choice of insulation material. - However the basic principles are the same for all such systems, and has been shown in our technical section. (Press red italics above)

RoofKrete is ideal for all types of flat roof applications and can be used on roofs where zero falls have been designed in a new build or present in a refurbishment project where the option to introduce falls is not possible. Due to the design characteristics of RoofKrete (see test data)  it can be used on flat roofs where standing water is likely or be completely submerged for its working life.

On large older style flat roofs, there are often a large number of protrusions, bolted fixings, upstands, rooflights and a large number of other types of penetrations which all break the continuity of the roof weathering system. The larger the roof the greater the chance of a number of these types of penetrations being present. Most weaknesses in construction in general occur at ‘interfaces’ whether these be materials or junctions, this is especially true on a flat roof where exposure to the elements are the greatest and where water has little chance of being shed away from the problem area quickly enough to limit the problem and the resulting damage. - Larger areas tend to suffer from a greater problem with expansion and contraction which can cause problems with its integrity. 

RoofKrete can be used on vertical surfaces, upstands, parapets, to form a seamless waterproof skin over the entire roof area and because ‘structural bearing pads’ can be built in to the system there is no need for any fixings to penetrate the waterproofing layer!