A Crash Course in Roof Venting - Fine Homebuilding
To be sure your roof is getting enough ventilation, there are simple calculations that you can follow. Beyond the decreased capacity for insulation when venting the roof deck, venting the roof deck or the attic has some other drawbacks worth considering. In cold climates, snow can enter the soffit and ridge vents, melt, and potentially cause rot.
Vented and Unvented Roofs - Fine Homebuilding
An unvented roof is often the only viable option when roof framing is complicated, such as when there are hips, valleys, dormers, or skylights that would prevent eave to ridge ventilation; when the house has no soffits and hence no soffit vents; or when adding eave vents would clash with the house’s architectural style. Unvented roofs also ...
Should I Vent a Roof Insulated With Spray Foam?
I asked a GAF engineer recently if they are warrantying spray foamed roof decks?, his answer was no unless the roof sheathing was ventilated. When a homeowner request this I always let them know these facts. Typically I will install poly vents at the underside of the sheathing, soffit vents, and ridge vent to have a ventilated roof deck.
Roof Venting Guide - Fine Homebuilding
Podcast Episode 662: Roof Venting, Roof Leaks, and High-Performance Framing. Listeners write in about haunted pipes and building-science tomes, and they ask questions about roof venting and roof leaks.
Understanding Types of Roof Vents - Fine Homebuilding
2023年10月12日 · The Roof-2-Wall vent from Cor-A-Vent is a complete ventilation package for the tough-to-vent detail where a pitched roof meets a vertical wall. Scott Gibson is a former contributing writer at Green Building Advisor and Fine Homebuilding .
Low-Profile Ventilation for Tiled Roofs - Fine Homebuilding
This article discusses low-profile ventilation for tiled roofs. In a market dominated by asphalt-shingled roofs with intake vents at the soffits and exhaust vents at the ridge, O’Hagin’s is looking out for the relatively small sliver of houses with tiled roofs.
Adequate Roof Venting - Fine Homebuilding
2016年1月6日 · The roofer is concerned about attic ventilation and recommends installing a ridge vent and closing off the existing gable vents. He also says that the rectangular metal soffit vents may not be adequate and recommends installing more …
Venting a Tricky Old Roof - Fine Homebuilding
The roof has likely been replaced a few times, most recently with asphalt shingles and roofing underlayment. And at some point in the 1970s, the attic was insulated with loose fill. As soon as I started working on the house, I knew that it might have attic-ventilation issues.
Does a Roof Need a Ridge Vent? - Fine Homebuilding
Editorial Adviser Mike Guertin answers this question regarding adequate roof venting. Attic-Ventilation Strategies – Except in some specific cases, building codes and shingle warranties require new roofs to be vented. If you’re building a house with an unconditioned vented attic, the necessary attic-ventilation details are fairly ...
Roof Venting Doesn’t Affect Cooling Loads - Fine Homebuilding
The conclusion: Ventilation doesn’t result in significant cooling of the roofing or of the roof sheathing. A ventilation channel won’t significantly change the temperature gradient across an insulated ceiling, either. Even if it did, you won’t have any significant energy savings if the roof assembly has code-minimum levels of insulation.