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ANSI/SPRI RP-4 2013 Wind Design Standard For Ballasted ...

2.1 Ballast In roofing, ballast comes in the form of large stones, (typically river bottom stone ¾ in. to 1½ in. diameter, size No. 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

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Velocity Roof Vac Services Chicago Roof Rock Ballast ...

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 gr...

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What is the SRI value of light gravel used on roof buildup ...

Apr 17, 2011· 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 ...

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Roofing Ballast - Nationwide

Ballast stone is normally made up of 3/4" minus natural river rock used to cover, hold down and protect the roofing membrane and insulation. Ballast stone is normally shoveled or vacuumed off the roof. Ballast Pavers - Concrete or Rubber . Ballast pavers are normally made from concrete or rubber and are used to cover, hold down and protect the ...

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Rounded Roofing Pebbles 20-40mm - Available in Poly Bags ...

Rounded Roofing Ballast/Pebbles 20-40mm are a great alternative to scottish beach pebbles and are available in 10,20 and 40 unit packs of easy to manage poly bags. The material is also available in bulk bags. Our rounded roofing pebbles are naturally rounded and smooth in apprearance. These flint pebbles are grey and brown in colour.

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Ballasted Roof Systems: Costly Issues You Should Understand

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. There are no fasteners installed at all (3 and 4). Next the membrane is rolled over the insulation (2). This again is loose so there are no fasteners or …

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Thermography for ballasted rubber roof? - Thermal Imaging ...

Jul 29, 2008· Thick stone ballast roofs are almost imposible for an effective IR scan. However, if the ballast is small pea or pebble size rock, then it should be ok. The large stone ballast has such a large thermal mass that the wet insulation below doesn't alter the temp of the stone over the area enough to produce a reliable scan.

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Ballasted Roofing Systems & Installation | Performance ...

Ballasted. Durable. Cost-effective. Sustainable. When looking for a long-lasting roofing solution, a ballasted roof system (EDPM membrane weighted down with stone) can strike the perfect balance of durability, cost, and sustainability. The ballast (river stone or pavers) shield the membrane from inclement weather and foreign objects to help ...

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Precast Concrete Roof Pavers - Stepstone, Inc

Precast Concrete Roof Pavers by Stepstone, Inc. are available in nineteen (19) standard colors and a variety of finishes including sandblasted, exposed aggregate and Sonorastone®, Stepstone's slate-like texture. These pavers can be installed with pedestals or laid directly on the roof surface.

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Roof Ballast Stone Removal Services in Fort Worth and ...

Call Roofworx today at 817-920-5974 for roof ballast stone removal in Fort Worth, TX! Ballast Stone Removal in Texas. Whether you are replacing your current single-ply membrane roof, or if you are looking to install a new roof entirely, you will need to have the ballast stone removed from your roof…

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How-To: Coat Gravel Roofs | Elastek

(NOTE: Some commercial single-ply roofs are ballasted with gravel—this report does not apply to these) Gravel Roof Advantages Most gravel roofs are inexpensive to build, offer some protection to vulnerable asphalt against UV damage, and the stones are very durable.

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Evaluating Ballasted Single-pi, Rool Systems

This ballasted retail building roof experienced ballast and membrane displace-ment. but the parapet wall kept the stones on the roof. Code officials concemed about stone ballast size can have stone screened accord-ing to AS1M D 448. However. a relatively quick measure of stone size can be accomplished by laying a ruler on the stone and ...

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S:FLEX - PV Mounting Systems - Ballasted

In this case, a particularly high quantity of ballast can be flexibly distributed over the rails. For roofs with a lower load-bearing capacity and roof superstructures on which longer rails cannot easily be laid, the triangles are attached directly to ballast blocks/stone slabs.

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Stone Ballast Removal | Eagle Rivet - CT Roofing Contractor

Stone Ballast Roofs. If you've ever seen a flat roof covered with gravel and wondered why, the answer is simple – it's there to keep the roof in place. Stones have been used as roofing ballast since antiquity, and in its modern form, stone ballast goes back to at least the 1970s.

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Ballasted Roof System | FiberTite

Ballasted Roof Systems: A Compelling Option for Increased UV and Fire Resistance. An alternative to adhered and mechanically attached systems, FiberTite can also be installed in typical ballast configurations using conventional stone or paver ballast to secure the FiberTite membrane to the roof.Installed over loose laid FiberTite membrane, ballast roof systems reduce membrane exposure …

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SINGLE-PLY MEMBRANE Metal Roof Deck Ballasted, stone

Overview. Steel deck with loosely laid single-ply membrane, ballasted with stone, depending on uplift requirement with/without cover board or slip sheet, XPS insulation over gypsum board thermal barrier and the metal roof deck. Get all the construction documentation you'll need, in a single click:

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Roof Ballast Pavers - Nitterhouse Masonry

Roof Ballast Pavers for Your Roof Protection System. Protect and beautify your roof with these attractive and functional roof ballast pavers. Our roofing pavers are available in diamond tread pattern and architectural shot blast finish to suit the needs of your building. You can use these roofing pavers as walkway pads, for paving stones on pedestals, as ballast paving stones and other ...

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TPO Roofing Systems | Firestone Building Products

Thermoplastic polyolefin (TPO) single-ply roofing membranes are among the fastest growing commercial roofing products and have gained praise across the industry for their many performance and installation advantages. As demand increases for heat-reflective and energy efficient roofing systems, you can rely on TPO single-ply roofing membranes to ...

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Department of Public Works & Engineering Building Code ...

Ballasted roofs with a minimum stone ballast of 17 lb/ft2 or 23 lb/ft2 pavers1½ inches nominal diameter . 2. Vegetated roof systems that contain a minimum thickness of 2.5 in. of growing medium and covering a minimum of 75% of the roof area with durable plantings . 3.

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Ballast Paver V2 D&I Guide - Westile Roofing Products

Ballast Paver units on the roof. E. Protect membrane and installed areas of Ballast Paver from damage when transporting pallets of Ballast Paver or other material. Place 3/4" plywood sheets in traffic path and use carts with pneumatic tires. 1.08 Warranty A. Ballast Paver 10 year limited material warranty

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KIRBYS SAND & GRAVEL - Gravel

Unwashed Landscaping, Decorative, Drainage and Roof Ballast Stone. Click here to edit text #2 Round Blue Gravel Approx.1 1/2"-3" Excavated from our pond with a natural blue tint with brown and natural color hues. Medium Mixed Color Decorative Rock. Approx. 2 1/2" - 8" Unwashed Rock. Large Mixed Color Decorative Rock.

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Guide and Considerations for Ballasted Roofing

Aggregate ballast blown off the roof can break windows and skylights and damage other building surfaces. For this reason, installation of stone or aggregate ballasted roof assemblies in hurricane-prone regions is not permitted by the 2018 IBC. In hurricane- and tornado-prone areas, selection of a paver ballast assembly is

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A New Look at Ballasted Roofs | WATERPROOF! Magazine

Jun 29, 2014· In a ballasted roof, the stones are much larger—at least an inch in diameter—and applied much more heavily. In fact, the weight of the stone "ballast" is the only item holding the roof components in place. The weight can vary from 10 pounds per square foot (the minimum allowed by code) to 25 pounds or more.

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Weight of Roofing Materials: Complete List | Roof Online

EPDM Roof Membrane 60-mil, Ballasted (Membrane and Stone Ballast Only) 10.75 - 20 lbs: 1075 - 2000 lbs: 52.5 - 97.65 kg: Firestone Building Products: EPDM Roof Membrane 60-mil, Fully-Adhered (Membrane Only) 0.47 lbs: 47 lbs: 2.29 kg: Firestone Building Products: EPDM Roof Membrane 90-mil, Fully-Adhered (Membrane Only) 0.56 lbs: 56 lbs: 2.73 kg ...

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Roofing: Ballast Can Do It All | Buildings

Aug 13, 2008· To further clarify the Cool Ballasted roof system, the submittal states that the roof system to be installed to the national standard ANSI/SPRI RP-4, "Wind Design Standard for Ballasted Single-Ply Roofing Systems." This standard defines the stone and paver types that can be used with single-ply systems and the minimum weights required to ...

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Ballasted - Carlisle SynTec

Its fast and easy installation makes the ballasted roof system extremely economical for large, open rooftops. Popular for large-scale retail stores and warehouses, ballasted systems feature a loose-laid membrane held in place by stone or pavers. The ballast helps to shield the membrane from inclement weather and extend the life of the roof.

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Stone Ballast Removal - TPO Roofing

Roof ballast removal is completed with a giant vacuuming truck and custom designed piping that allows the stone to be sucked right off the roof and into the truck. The stone is either left on site if the customer wants to keep it, or disposed off site. At the end of the day, the roof looks dramatically different (and dirtier) without ballast.

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Schofield Stone|Stone Wholesalers & Quarriers

Blue Stone & Flagstone. Blue Stone Irregular Flagstone. Blue Stone Pattern Flagstone. Irregular Flagstone. Pattern & Imported Flagstone. ... #2 Roofing Ballast - No longer meets Spec ASTM D 448 #3 Roofing Ballast - ASTM D 448 #4 Roofing Ballast - ASTM D 448. DELAWARE BLEND 3/8. PEARL PEBBLE 1/2. Roofing Spar.

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Protected Membrane Roofing Ballast Options - American ...

stone ballast Typically requires crushed, graded stone placed over a stone filter sheet, rolled out over the insulation. In the field of the roof, a minimum of 10 lbs./s.f. ballast is required, with 20 lbs./s.f. needed at perimeters and at large penetrations.

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A Tar & Gravel Roof Guide for Beginners (Updated for 2021)

Jan 02, 2021· Ballast Tar & Gravel Roofing. On the other hand, ballast roofing might be the right choice for your commercial property if you live somewhere with a ready source of ballast (rocks/gravel of the appropriate size) and you prefer the aesthetic look and texture of the larger stones. Paving stones can also be added to create walkways, which add ...

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Gravel Ballasted Roofs - Sika

Gravel ballasted roofs with Sikaplan® or Sarnafil® single ply membranes are conventionally installed. The single ply membrane and other roof components, including thermal insulation, are loose laid. The buildup is ballasted with a gravel layer of at least 50 mm and 80 kg/m 2. The gravel ballast secures the roof waterproofing against wind ...

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Ballast Stone - Ordovician Dolomitic Limestone | Pattison ...

The Perfect Ballast Stone. Ballast Stone is also known as railroad ballast, walking ballast, mainline ballast, shortline ballast, yard ballast, AREMA ballast, AREMA 4a and AREMA 5 ballast. This material is used primarily for railroads as mainline ballast or cross walk material. Because the purpose of Ballast Stone is to improve drainage.

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JM EPDM PROTECTIVE STONE MAT

Ballasted • The JM EPDM Protective Stone Mat is typically installed between the overlying ballast or pavers and the JM EPDM roofing membrane. • Refer to JM EPDM applicator guides or detail drawings for instructions. Packaging and Dimensions Roll Size 15' wide x 300' long (4.57 m x 91.44 m) Material Weight 7.0 oz/yd2 (237.34 g/m2) (nom)

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Firestone EPDM Ballasted System - YouTube

Mar 05, 2009· EPDM Ballasted Roofing System

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