Ballasted roof systems are simultaneously a roofer s best friend and arch nemesis.
Gravel ballast green roof.
For roofs displaying complex detail areas and geometry even when accessibility is limited.
Holes mean roof leaks and roof leaks mean call the roofer.
They are valid for the constructions shown in the details immediately above each table.
The buildup is ballasted with a gravel layer of at least 50 mm and 80 kg m 2.
They assume a nominal selection of post codes selected to represent the infl uence of geographical variations in rainfall on thermal performance.
Too much gravel can result in a structural issue due to weight.
Ballasted green systems roof materials for ballasted green systems a ballasted gravel paved roof will generally require a stronger supporting structure than that for the exposed membrane one but will allow the roof to be used as a trafficked or leisure use area.
On the other hand ballast roofing might be the right choice for your commercial property if you live somewhere with a ready source of ballast rocks gravel of the appropriate size and you prefer the aesthetic look and texture of the larger stones.
Simply put a ballasted roof is easy to install and basically guaranteed maintenance work for a roofer.
Gravel ballasted roofs with sikaplan or sarnafil single ply membranes are conventionally installed.
For cold roof warm roof and inverted roof build up s.
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.
Magazine and roofing southwest although single ply roofs inherently have sun protective qualities ballast provides an extra layer of protection from uv rays.
For sikaroof mtc 8 12 15 18 22 sikaroof mtc cold bonding sikaroof mtc green and sikaroof mtc ballast in both new construction and refurbishment projects.
Slab ballast application or 0 0010 for a green roof or gravel ballast application has been assumed.
Roof gravel provides a protective layer to flat roofs reducing the weather damaging effects from uv rays and heavy snow hail and wind.
Our roof gravel is available for delivery in tunnel lift bulk bags allowing an easy method of transporting the gravel onto a roof using a crane not provided.
Despite the positive qualities associated with a ballasted roof system there are some challenges.
Somebody walking on the roof will undoubtedly step on the ballast and put a hole in the membrane.
It is very important to note that the amount of gravel being applied to a roof must be precise it depends on the specific roofing spec being used and the building type.
