Fm class 1 for fire barrier requirements and ul class a unlimited slope with excellent surface burning characteristics.
Required thickness coverboard roof.
Meets the requirements of astm c 1177.
This significantly increases the time required to melt the insulation which adds fuel to the flames.
Densdeck roof boards are fm tested and approved as the only 1 2 gypsum product to meet the calorimeter requirements for conventionally insulated decks.
Thickness of firestone insulation acceptable for use as an immediate substrate for firestone roof membranes in firestone red shield warranties.
He is the editorial director of architectural roofing waterproofing and a technical columnist for roofing contractor.
Table 1 12 4 30 year platinum tpo requirements.
When the total required polyiso insulation thickness is equal to or greater than 3 thickness the minimum recommended thickness is 1 5 for both.
Securock products are available in thicknesses of 3 8 and 5 8.
Coated fiberglass facer ideal for fully adhered systems provides a broader compatibility and higher performance with roofing adhesives.
Codes exempt foam plastic insulation when used in fm 4450 or ul 1256.
5 8 thickness meets the requirements of type x per astm c 1177.
5 8 thickness meets the requirements of type x per astm c 1177.
When a coverboard in an approved assembly is used any thickness equal to or greater than 1 5 is acceptable.
Tested in accordance with astm e84 its surface burning characteristics are flame spread 0 and smoke developed 0.
In this application the cover board provides a fire barrier in the case of an internal fire.
Fm class 1 for fire barrier requirements and ul class a unlimited slope with excellent surface burning characteristics.
Densdeck roof boards are utilized in a wide variety of roofing systems for new and re roofing applications as gypsum roof cover boards and thermal barriers.
Physical properties listed above are presented as typical average values as determined by accepted astm test methods and are subject to normal manufacturing.
However thermal efficiency may be increased by the use of multiple layers of flintboard.
The cover board also serves as a substrate for a vapor retarder in this application.
1 4 6 4 mm 1 16 1 6 mm width standard.
4 1219 mm 1 8 3 mm.
D annunzio is president of paragon roofing technology inc a construction engineering firm he founded in 1989.
He has published more than 100 articles and has written four books on building exterior issues.
Coated fiberglass facer ideal for fully adhered systems provides a broader compatibility and higher performance with roofing adhesives.
Flame spread index of 75 and smoke development 450 meet code requirements for foam plastic roof insulation.
