Difference between revisions of "Water-shedding Materials"

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Difference between revisions of "Water-shedding Materials"

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== General ==
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Steep slope roofing is a term most commonly applied to roofs having a slope of 1:3 (4" in 12") or greater. Generally, the materials installed on steep roofs perform the same function, they provide a “water shedding” roof system.  These systems do not “waterproof” the roof, but divert water away from the roof into the drainage system.
 
  
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The components of a steep slope roof are usually relatively small units designed to be overlapped and installed in courses. Despite the number of gaps or joints in the roofs, water will not usually penetrate the system unless the flow of water is impeded. Care must be taken to ensure no element of the roof system “bucks” water.
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Steep slope roofing systems included in the RoofStar Guarantee Program are:
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* Asphalt Shingles - [[7.1 ASPHALT SHINGLES]]
 
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* Cedar Shingles - [[7.2 CEDAR SHAKES AND SHINGLES]]
 
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* Cedar Shakes - [[7.2 CEDAR SHAKES AND SHINGLES]]
 
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* Metal Roofing - [[8.0 ARCHITECTURAL METAL ROOFING]]
 
  
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For further information and installation specifications, consult Section 7.
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<big><big>Division E - General Information</big></big>
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<big><big><big><big><big>Water-shedding Materials</big></big></big></big></big>
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{| class="wikitable" | style="color: black; background-color: #ffffcc; width: 100%;"
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| colspan="2"  | '''NOTICE TO READER''': This is an <u>information page only</u>.  To read the standards applicable to a particular Waterproofing or Water-shedding System, refer to the actual Standard located in [[Division B | '''Division B''']].
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Some flexible membrane roof systems are suitable for steep slope applications, consult Section 5 (<i>Bituminous and Modified Bituminous</i>) or Section 6 (<i>Non-Bituminous</i>) for membrane manufacturer's requirements.
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Water-shedding materials are used on roofs that typically have a slope of 1:3 (4" in 12") or greater. Generally, the materials installed on steep roofs each perform the same function - to shed water away from the building, rather than to waterproof it.
  
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The components of a water-shedding system are designed to be overlapped and installed in courses. Despite the number of gaps or joints in the roofs, water usually will not penetrate through the roofing materials into the building, unless the flow of water is impeded (blocked or diverted laterally). Care must be taken to ensure no element of the roof system interrupts the gravitational pull of water off the roof.  Refer to the water-shedding Standards in [[Division B | '''Division B: Standards''']].
  
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[[Section:B. Essential Elements|Back to ''Essential Elements'']]
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[[Membrane Surfaces|''Membrane Surfaces'']]
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Latest revision as of 16:19, 9 September 2021


Division E - General Information

Water-shedding Materials

NOTICE TO READER: This is an information page only. To read the standards applicable to a particular Waterproofing or Water-shedding System, refer to the actual Standard located in Division B.

Water-shedding materials are used on roofs that typically have a slope of 1:3 (4" in 12") or greater. Generally, the materials installed on steep roofs each perform the same function - to shed water away from the building, rather than to waterproof it.

The components of a water-shedding system are designed to be overlapped and installed in courses. Despite the number of gaps or joints in the roofs, water usually will not penetrate through the roofing materials into the building, unless the flow of water is impeded (blocked or diverted laterally). Care must be taken to ensure no element of the roof system interrupts the gravitational pull of water off the roof. Refer to the water-shedding Standards in Division B: Standards.

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