Above-deck roof venting article

Patent metadata

Field	Value
Publication number	US-9228356-B2
Application number	US-201214366291-A
Country	US
Kind code	B2
Filing date	Dec 17, 2012
Priority date	Dec 22, 2011
Publication date	Jan 5, 2016
Grant date	Jan 5, 2016

Abstract

A roofing system and article for installation on a roof deck. The roofing article includes a body having an upper portion and an underside. A first channel is defined within the upper portion. The first channel includes an inlet. A second channel is defined intermediate the underside of the body and the roof deck. The second channel is operably connected to the first channel through an orifice, such that the outside air can enter the second channel through the orifice.

First claim

What is claimed is:

1. A roofing article for installation on a roof deck, said roofing article comprising:
a body comprising an upper portion and an underside;
a first channel defined within said upper portion, said first channel comprising an inlet through which outside air can enter said first channel;
a second channel defined intermediate said underside of said body and the roof deck, wherein said second channel is operably connected to said first channel through an orifice such that the outside air can enter said second channel through said orifice; and
an airflow interrupter for at least partially closing at least one of said first channel or said second channel when said airflow interrupter is exposed to temperatures at or greater than about 350 degrees Fahrenheit.

2. The roofing article of claim 1 , wherein said second channel is in airflow communication with an unconditioned space and wherein unconditioned air from the unconditioned space can enter said second channel.

3. The roofing article of claim 2 , wherein the unconditioned air entering said second channel can mix with outside air entering said second channel through said orifice to form mixed air.

4. The roofing article of claim 2 , wherein the unconditioned space is an attic.

5. The roofing article of claim 1 , further comprising insulation presented intermediate said first channel and said second channel.

6. The roofing article of claim 1 , wherein said first channel comprises an first channel upper internal surface and a first channel lower internal surface, wherein one or more of said first channel upper internal surface and said first channel lower internal surface comprises a radiant barrier presented therewith.

7. The roofing article of claim 1 , wherein said second channel comprises an second channel upper internal surface and a second channel lower internal surface, wherein one or more of said second channel upper internal surface and said second channel lower internal surface comprises a radiant barrier presented therewith.

8. The roofing article of claim 1 , further comprising an air director presented in said first channel proximate said orifice to direct outside air into orifice.

9. The roofing article of claim 1 , wherein said airflow interrupter comprises an intumescent material.

10. The roofing article of any claim 1 , wherein a ratio of a cross section of said inlet to a cross section of said orifice is between about 2 to about 48.

11. The roofing article of claim 1 , wherein a ratio of a cross section of said inlet to a cross section of said orifice is between about 1 to about 12.

12. The roofing article of claim 1 , wherein said roofing article is operably coupled to one or more rails presented on a roof deck.

13. A roofing system comprising at least two roofing articles, each roofing article comprising:
a body comprising an upper portion and an underside;
a first channel defined in said body, said first channel comprising an inlet through which outside air can enter said first channel;
a second channel defined intermediate said underside of said body and the roof deck, wherein said second channel is operably connected to said first channel through an orifice such that the outside air can enter said second channel through said orifice,
wherein the second channels of each of the at least two roofing articles are in airflow communication so as to create an airflow path between the at least two roofing articles; and
an airflow interrupter presented with said airflow path for at least partially closing at least one of said first channel or said second channel when said airflow interrupter is exposed to temperatures at or greater than about 350 degrees Fahrenheit.

14. The roofing system of claim 13 , wherein the second channel of each of the at least two roofing articles is in airflow communication with an unconditioned space and wherein unconditioned air from the unconditioned space can enter said second channel.

15. The roofing system of claim 13 , wherein the unconditioned air entering said second channel of each of the at least two roofing articles can mix with outside air entering said second channel of the at least two roofing articles through said orifice to form mixed air, wherein said mixed air can exit said second channel of the at least two roofing articles.

16. The roofing article of claim 13 , wherein said airflow interrupter comprises an intumescent material.

17. A roofing system for installation on a roof deck comprising:
at least two roofing articles, each roofing article comprising:
a body comprising an upper portion and an underside;
a first channel defined in said body, said first channel comprising an inlet through which outside air can enter said first channel;
a second channel defined intermediate said underside of said body and the roof deck, wherein said second channel is operably connected to said first channel through an orifice such that the outside air can enter said second channel through said orifice; and

at least one rail presented on roof deck, wherein said at least two roofing articles are configured to be operably serially coupled to rail, such that said second channel of said at least two roofing articles is substantially aligned to create an airflow path; and
an airflow interrupter presented with said airflow path for at least partially closing at least one of said first channel or said second channel when said airflow interrupter is exposed to temperatures at or greater than about 350 degrees Fahrenheit.

18. The roofing system of claim 17 , wherein said rail is integrally formed with a rail sheet that can be operably coupled to the roof deck.

Assignees

• 3M Innovative Properties Co

Inventors

• Edwards John S
• Klink Frank W
• Dobbs James N
• Kirschhoffer Jon A

Classifications

• E04D1/28

  Roofing elements comprising two or more layers, e.g. for insulation · CPC title

• E04D2001/307

  for passages in the roof surface · CPC title

• E04D2001/309

  Ventilation tiles · CPC title

• F24F7/02 Primary

  Roof ventilation (ventilation of roof coverings E04D) · CPC title

• E04D13/002

  Provisions for preventing vegetational growth, e.g. fungi, algae or moss · CPC title