Roof Ballast Rock

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Roof ballast rock.

In gravel ballasted roofing systems the waterproofing membrane is covered and ballasted against wind uplift and other exposures with a layer of gravel. There are no fasteners installed at all 3 and 4. 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. 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.

In the field of the roof a minimum of 10 lbs s f. 0 0 a m 5. Contact hydrotech for specific installation guidelines. Conventional gravel ballasted roofs have been built for many years and are suitable on most flat roofs and structures.

Ballast river rock removal ballast vacuuming services will remove all river rock from single ply roofs. It is however ballasted generally with gravel. Our roofing ballast is commonly installed over membrane and single ply systems at 1000 1500 pounds per square. Ballast stone can crush the underlying insulation creating weak spots in the roof membrane.

A ballasted roof means that the roof membrane is not anchored or adhered in any way to the decking material. White ballast can range in size from 2 1 2 3 4 inches and can be made to meet various astm standards. Over time the stones move around creating bald spots where the system isn t held down at all. The firestone epdm ballasted system is an economical epdm roofing system suitable for a wide variety of buildings.

Ballast is required with 20 lbs s f. Stone ballast is no longer allowed by many building codes. In windy areas ballast stone can actually blow off the roof creating projectiles below. Most importantly saves time allowing projects to run efficiently.

Business hours monday thursday 7 00am 6 00 p m f r i d ay 7. The stone ballast on a ballasted roof system is the only thing holding the roof system in place. 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.

Unwashed landscaping decorative drainage and roof ballast stone. Next the membrane is rolled over the insulation 2. Needed at perimeters and at large penetrations. 2 1 2 8 unwashed rock.

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. Large mixed color decorative rock. Single ply roofing materials aren t self adhered nor are they sealed together in any way.