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Built-Up

BUR flat roof is “Built-Up” using a number of technologically advanced individual membranes or plys, the most important of which is the waterproofing membrane.

  The new generation of BUR waterproof membranes are based on inorganic materials such as polyester and glass fibre which use compounds such as APP (atactic polypropylene) and high performance rubber-modified SBS (styrene-butadiene-styrene).

  Rag-based bitumen was absorbent and subject to rot, had low tear strength and was easily damaged during laying and roof move-
ments resulting in low life expectancy and justifiably soured attitudes toward BUR.

  New membrane systems supply a 20 year life at a cost only 25% greater or a 40 year life at a cost only 33% greater than rag-based flat roof which would have a life expectancy of only 8 years. Installing a new or recovering an existing BUR with the new membranes provides not only the best technological solution but is much more cost effecient than a pitched and tiled roof.

  Marcher BUR systems come with a 10-20 year materials and labour guarantee depending on system specifications.

  Marcher do not patch or repair existing systems, we only lay new BUR systems replacing existing chipboard decking with either new plywood or softwood. Insulation is also replaced.

  See Asphalt for a hi-tech/low cost solution to your existing BUR.



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