Roof Ballast Material

Roofs with pavers as ballast can be used as outdoor patios.

Roof ballast material.

It is however ballasted generally with gravel. The gravel in a ballasted roof helps absorb heat preventing the sun from heating the roof materials below and making the roof more energy efficient. Ballasted flat roofs are a popular choice especially for commercial buildings. Holes mean roof leaks and roof leaks mean call the roofer.

Somebody walking on the roof will undoubtedly step on the ballast and put a hole in the membrane. One of the advantages of using mm6125 in a protected membrane roof assembly pmr is that once the membrane is installed owners and designers can take advantage of various ballast options gravel pavers and garden roof to suit a specific project s needs. Ballast options and flexibility. Ballasted roof systems are simultaneously a roofer s best friend and arch nemesis.

Extremely difficult to find a leak in this system since the membrane is well hidden. When the concept first came to the u s plenty of roofers scratched their heads and wondered how the roof stayed on without being anchored especially during high winds or storms. Magazine and roofing southwest although. A ballasted roof means that the roof membrane is not anchored or adhered in any way to the decking material.

Simply put a ballasted roof is easy to install and basically guaranteed maintenance work for a roofer. Note that roof systems typically include more than one type of material a built up roof for example will typically include the built up membrane itself with or without gravel as well as some kind of insulation and cover board which will vary in thickness from roof to roof. Drawbacks of a ballasted roof system.