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Talk to ten roofing contractors and you'll get ten answers on what the gravel is for, but this seems to be the consensus: (1) Stabilization. In a typical tar-and-gravel roof (which, by the way, is gradually being supplanted by gravelless roof systems), you put down a layer of tar paper, then tar, and finally gravel. Tar has a low melting point.
ASTM D 448 - Naturally rounded, off-white and beige quartzite. Used in roofing applications.
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. Ballast is a natural product that does not require any chemicals in manufacturing and is fire-resistant.
Conventional Ballasted Roof System – consists of membrane or membrane and substrate material loose-laid over a deck using ballast to hold the system in place. Protected Membrane Ballasted Roof System – consists of a roof deck, with or without insulation, over which the membrane is installed.
A wide range of sizes are available at a 113/16"thicknessand a weight of 23 lbs/sf. Unlike river gravel which has been known to be hazardous, pavers used as ballast or walkways provide a durable, safe method of protecting the roof system. Hanover® Prest® Pavers are available as a single source component from several water proofing manufacturers.
Jan 28, 2014· We can offer very competitive pricing and great expert work by our trained professionals. Thank you for choosing Velocity Roof Vac Services, Inc. for your gravel, stone, roof rock removal & roof ...
A "ballasted roof" generally refers to a single ply roof membrane that is held in place against wind uplift by loading the surface with either stone ballast or pavers. The membrane for such systems is usually not attached to the substrate, although some systems do have supplementary perimeter attachment. Since the ballast is the primary ...
Jul 17, 2017· Knowing the size of the area you plan to fill with river rocks helps you accurately calculate how much of the rock you need. For square or rectangular areas, just multiply the length of the space by the width.For example, if your flowerbed is 10 feet long and 6 feet wide, it's 60 square feet.
The gravel used in built up roofing (what the roofing contractors were used to) was not the same as that used in a ballasted roof. For built up roofing, the gravel was generally .25 - .5 inches in diameter. The stones used in ballasted roofing are generally 1.5 - 2.5 inches in diameter and applied in a thicker layer.
A wide range of sizes are available. Unlike river gravel which has been known to be hazardous, pavers used as ballast or walkways provide a durable, safe method of protecting the roof system. Lightweight Ballast Pavers can be used when the roof will not accommodate the load of a standard paver.
Roof leak investigation on a ballasted roof can be a bit of a nightmare. Ballasted roof systems hold dirt and dust in between the stone which makes finding small punctures very difficult. Plus, the only way you're able to see the membrane is to move the ballast. That means somebody (Mr. Roofer) is shoveling stone out of the way.
Our ballast vacuuming services will remove all 0.75" to 2.5" river rock from single-ply roofs. By removing ballast this way rather than traditional shovels, wheelbarrows, and chutes, you remove the most labor intensive portion of ballasted single-ply tear-offs. This saves you time, labor, injuries, Read more »
Ballast Print, Shingle Print & Vinyl Rib Roofing Systems from the Duro-Last® Designer Series Designer Series Details Our Designer Series products are ideal for applications where roof appearance is important, but conventional shingles or roofing ballast may not be practical.
Ballast removal and re-ballast, or "swap-out" as some call it allow you to save on the cost of purchasing new ballast for your repair or re-roof jobs. This process begins with vacuuming all 1" to 2.5" river rock from single-ply roof systems. The roofing contractor will have an area onsite to stockpile the vacuumed gravel to be used in ...
A ballasted roofing system normally consists of river-rock ballast over a ... maryland river rock for ballast - Crusher South Africa... (2995 Ratings) ... ornamental roof ballast river rock. What is the SRI value of light gravel used on roof buildup ... roof gravel river stone prices. ornamental roof ballast river rock - beltconveyers
Hanover Roof River Rock Ballast,we Ltd. is a large-sized joint-stock enterprise integrated with the scientific research, production and sales of heavy mining machinery. It is located in high and new technology industrial development zone, Zhengzhou with an area of 200,000 m².
Ballasted Roof System. Ballasted roof systems have been installed since the early 1970's. They are known for their installation speed and pleasing aesthetics. Most ballasted roof systems use gravel stone that is similar to what would be used in landscaping. However, other ballasted systems use pavers, which are easier to walk on and can be ...
Our Rock Removal Machine – Hurricane 655 Power Vacuum. Our diesel-powered Hurrican Roof Vacuum can pull river rock and pea gravel up to 1000 feet and drop it directly into a dump truck or dumpster for efficient disposal or recycling.
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 project's needs.
Ballasted flat roofs are a popular choice, especially for commercial buildings. Additional benefits of ballast on a flat roof. 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. (Sources: WATERPROOF! Magazine and Roofing Southwest.) Although ...
Ballasted EPDM roof systems have been a sustainable option for decades by Ronald L. Goodman B Before sustainability became a popular concept in building design, ballasted EPDM roof systems were widely used. Dating to the 1960s, this time-tested, reliable roof system still offers more sustainable fea-tures than many systems currently available.
A ballasted roofing system normally consists of river-rock ballast over a membrane, rigid insulation, and a metal roof deck. Though the solar reflectance is lower than a traditional cool roof, the river rock has high thermal emittance properties and the mass of the ballast acts as a heat sink, resulting in, according to some, a similar overall ...
Jan 19, 2013· river rock prices per ton north carolina – Grinding Mill China. Cost per ton: $170; Mini Pallet (500 pounds): . price per ton of roof ballast river rockst of rock per ton in bay area. price per ton of granite quarry screenings. »More detailed
application of GAF's ballasted single-ply roofing systems and is based on our years of experience in the commercial roofing field. It has been prepared as a general guide to assist architects, engineers, roofing contractors, and owners in the use of our roofing systems. • GAF manufactures and sells roofing materials and does not
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