Roof Ballast Rock

The stone ballast on a ballasted roof system is the only thing holding the roof system in place.

Roof ballast rock.

White ballast can range in size from 2 1 2 3 4 inches and can be made to meet various astm standards. Large mixed color decorative rock. Ballast river rock removal ballast vacuuming services will remove all river rock from single ply roofs. 2 1 2 8 unwashed rock.

Contact hydrotech for specific installation guidelines. Medium mixed color decorative rock. In the field of the roof a minimum of 10 lbs s f. Our roofing ballast is commonly installed over membrane and single ply systems at 1000 1500 pounds per square.

A ballasted roof means that the roof membrane is not anchored or adhered in any way to the decking material. Most importantly saves time allowing projects to run efficiently. Unwashed landscaping decorative drainage and roof ballast stone. Single ply roofing materials aren t self adhered nor are they sealed together in any way.

Stone ballast is no longer allowed by many building codes. Ballast is commonly used with roofs made of tar and gravel roof alternatives including ethylene propylene diene monomer epdm polyvinyl chloride pvc and thermoplastic polyolefin tpo single ply flat roofs. Ballast stone can crush the underlying insulation creating weak spots in the roof membrane. In windy areas ballast stone can actually blow off the roof creating projectiles below.

A1 grit ballast is a natural smooth water worn and screened large gravel used for many applications. Ballast is required with 20 lbs s f. It is however ballasted generally with gravel. 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.

Needed at perimeters and at large penetrations. Conventional gravel ballasted roofs have been built for many years and are suitable on most flat roofs and structures. The firestone epdm ballasted system is an economical epdm roofing system suitable for a wide variety of buildings. Click here to edit text.

In gravel ballasted roofing systems the waterproofing membrane is covered and ballasted against wind uplift and other exposures with a layer of gravel. The insulation is loose laid onto the decking. Our process as opposed to traditional forms of removing ballast reduces intense labor portions as well as minimizes risk of damaging roofs with shovels wheelbarrows. Next the membrane is rolled over the insulation 2.

There are no fasteners installed at all 3 and 4. 0 0 a m 5. It can be applied on any building that can accommodate the extra load of the ballast and where the roof slope does not exceed 10.