A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ROOFING UNDERLAYMENT
A roofing underlayment includes a first layer of synthetic woven or nonwoven material; a second layer of woven or nonwoven material; a third layer of elastic recoverable material; and a fourth layer of fire resistant material. The third layer may have a weight of 50 gsm to 300 gsm. The elastic recoverable material includes an elastomer. The roofing underlayment can be configured to be secured to a roof such that the roofing underlayment meets (a) ASTM D4869 water shower exposure test, (b) UL790 burning brand rating, and (c) ASTM D1970 nail sealability.
ROOFING UNDERLAYMENT
A roofing underlayment includes a first layer of synthetic woven or nonwoven material; a second layer of woven or nonwoven material; a third layer of elastic recoverable material; and a fourth layer of fire resistant material. The third layer may have a weight of 50 gsm to 300 gsm. The elastic recoverable material includes an elastomer. The roofing underlayment can be configured to be secured to a roof such that the roofing underlayment meets (a) ASTM D4869 water shower exposure test, (b) UL790 burning brand rating, and (c) ASTM D1970 nail sealability.
ROOFING UNDERLAYMENT
SOUS-COUCHE D'UNE TOITURE
CHEUNG WILSON (author) / CHICH ADEM (author)
2022-09-15
Patent
Electronic Resource
English
IPC:
B32B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
,
Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse
/
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
/
E04D
ROOF COVERINGS
,
Dacheindeckungen