Tan grey.
Roof ballast stone size.
Used in roofing applications.
Ballast stones are usually one to two inches thick and applied more generously than on a built up roof.
4 1 the wind resistance of ballasted membrane roof systems is determined largely by the size and weight of the ballasted used.
The wind performance of this material was extensively studied in wind tunnels and by field inspections during the 1970s and 1980s resulting in the development of ansi spri rp 4.
The key reason for developing rp 4 was to eliminate improper use of stone ballast.
This will permanently remove the record from.
Just be warned that over time as leaks start to occur it will.
White ballast can range in size from 2 1 2 3 4 inches and can be made to meet various astm standards.
Our roofing ballast is commonly installed over membrane and single ply systems at 1000 1500 pounds per square.
White ballast a1 grit ballast is a natural smooth water worn and screened large gravel used for many applications.
1 3 4 x11 4 size 4.
Bagged stone by garden rock.
The stone used for single ply ballast has been sized using astm d448.
Designed to be used on flat rooftops.
The stones are therefore much more substantial and hold up well under wind tunnel tests.
Roofing stone is available in 1 1 1 2 roof ballast and 3 8 washed pea stone.
Astm d 448 naturally round grey and tan granite.
3 roofing ballast astm d 448.
If roof weight isn t a concern and aesthetics are a priority consider a ballasted roof.
Ansi spri rp 4 provides a method for the wind design of ballasted single ply membrane roof systems and includes specific guidelines for the size and weight of aggregate used as ballast.
Astm d 1863 crushed limestone white.
In windy areas ballast stone can actually blow off the roof creating projectiles below.
Ton or 60lbs bags.
Astm d 448 naturally rounded off white and beige quartzite.
1 3 4 x11 4 size 4.
In many cases ballasted roofing also uses pavers in places of heavy traffic or even over the entire surface of the roof.
Schofield pennsylvania blue stone.
Used in roofing applications.
2 1 ballast in roofing ballast comes in the form of large stones typically river bottom stone in.
Stone ballast is no longer allowed by many building codes.
4 per astm d448 standard sizes of coarse aggregate or astmd7655 d7655m 12 standard classification for size of aggregate used as ballast for membrane roof systems or.
4 roofing ballast astm d 448.
Roofing southwest a ballast system helps cut roof system application costs as it takes less time to install since sealing the layers together isn t necessary.
Schofield tennessee wholesale products.
Pavers however are still acceptable.
Ton or 60lbs bags.
