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ANSI/SPRI RP-4 2008 Wind Design Standard For Ballasted ...
ANSI/SPRI RP-4 2008 Wind Design Standard for Ballasted Single-ply Roofi ng Systems Approved December 3, 2008 page 3 2.9.2 Parapet Height The parapet height for conventional ballasted roof systems (See Section
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Roofing Southwest - What is a Ballasted Roof …
The ballast stones (not pavers) can be moved around by the wind, and in some cases have caused dangerous flying projectiles during wind storms. For that reason, many roofers are moving to all pavers with this system. As mentioned, ballasted roof systems are less common in new construction and replacement, but can be appropriate in some cases.
Ballasted Roof Systems: Costly Issues You Should …
Ballasted roof systems are simultaneously a roofer’s best friend and arch nemesis. Simply put, a ballasted roof is easy to install and basically guaranteed maintenance work for a roofer. Somebody walking on the roof will undoubtedly step on the ballast and put a hole in the membrane. Holes mean roof leaks and roof
Why Put Gravel on a Flat Roof - The Purpose of …
Gravel on a ballast roof system. Ballast is a different style of gravel, which is applied to single-ply roofing systems. Although the primary purpose of ballast is to weigh down the roofing materials, it also offers similar protective benefits as described above.
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Ballast Removed from Roof - YouTube
3-8-2015 · Video shows deflection of a roof surface after ballast was removed from area and not replaced. Ballast must be replaced after removal.
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Protected Membrane Roofing Ballast Options - American ... Ballast Options and Flexibility. 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 projects ...
Ballasted Roof System | Ballasted EPDM
Roofs with pavers as ballast can be used as outdoor patios. Drawbacks of a Ballasted Roof System. Adds a lot of weight to the roof system, typically 10-15 pounds per square feet. Extremely difficult to find a leak in this system, since the membrane is well hidden. Ballast stone traps a …