Understanding Types of Roof Vents - Fine Homebuilding
Oct 12, 2023 · Most roof vents on the market are passive devices that rely on the stack effect, wind, temperature differentials, or some combination of those forces to move air. There also are electrically powered vents capable of moving a great deal of air, such as the roof-mounted models manufactured by Air Vent that can exhaust as much as 1320 cu. ft. per ...
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.
Roof Venting Guide - Fine Homebuilding
Podcast Episode 662: Roof Venting, Roof Leaks, and High-Performance Framing FHB Podcast Segment: A Double Roof Discussion FHB Podcast Segment: Control Condensation With Exterior Insulation
Should I Vent a Roof Insulated With Spray Foam?
Michael Chandler, owner of Chandler Design-Build near Chapel Hill, N.C., and Bruce Harley, technical director of Conservation Services Group in Westborough, Mass., respond: Sealed attics perform much better than vented attics in the South; providing soffit and ridge vents is not a good idea. Humidity is likely to come from the outside air in ...
Adequate Roof Venting - Fine Homebuilding
Jan 6, 2016 · When gable vents are left open, air can enter through the gables and bypass the soffit vents. If air flows in through the gables and out the ridge vents, the entire roof doesn’t receive the full effect. The air isn’t entering through the soffit vents, traveling up the underside of the roof, and exiting through the ridge vent.
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 ...
Vent Flashing Done Right - Fine Homebuilding
Back up roof vent boots with flashing, counterflashing, and proper shingling to prevent leaks. By Mike Guertin Issue 276 - July 2018 Synopsis: Mike Guertin describes his method for flashing roof vent boots, a main source of roof leaks.
Venting a Tricky Old Roof - Fine Homebuilding
Shingle-over ridge vents were a no-brainer for the exhaust vents, but choosing the style of intake vents was a bit trickier. The eaves on this house project only 8 in. from the sidewall, and the soffit boards are applied to the underside of the sloping rafter tails, which meant there was not enough room to install intake vents in the soffit.
Should I Close My Attic Gable Vents? - Fine Homebuilding
That heats up attic air. Adding exhaust vents high on the roof can help to accentuate the inflow of air through the soffit vents. It doesn’t matter if these exhaust vents are ridge vents, gable vents, roof vents, or some combination. If windblown rain or …
Low-Profile Ventilation for Tiled Roofs - Fine Homebuilding
O’Hagin’s vents are placed near the eaves for air intake and near the ridge for exhaust, but they don’t incorporate the soffit or ridge vents that are typical of most vented roofs. Instead, low-profile vents are designed to blend with tile or slate roofing, …