ventilation chute

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Urban Rustic: Ventilation Baffles

Site-made ventilation chutes made from OSB look like a better bet than commercially available baffles

Posted on Nov 16 2017 by Eric Whetzel

Editor's note: This post is one of a series by Eric Whetzel about the design and construction of his house in Palatine, Illinois, a suburb of Chicago. The first blog in his series was called An Introduction to a New Passive House Project; a list of Eric's previous posts appears below. For more details, see Eric's blog, Kimchi & Kraut.


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Site-Built Ventilation Baffles for Roofs

If you want sturdy baffles that create deep ventilation channels, you’ll probably have to make your own

Posted on Apr 24 2015 by Martin Holladay
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Roofs often require ventilation channels directly under the roof sheathingMaterial, usually plywood or oriented strand board (OSB), but sometimes wooden boards, installed on the exterior of wall studs, rafters, or roof trusses; siding or roofing installed on the sheathing—sometimes over strapping to create a rainscreen. — either for a short section of the roof (for example, near the eaves) or for the entire roof, from soffit to ridge. When the wind is blowing, these ventilation channels allow air to move from the soffit vents to the ridge vents.


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Image Credits:

  1. Image #1: Fine Homebuilding
  2. Image #2: EnergyConservationHowTo.blogspot.com
  3. Image #3: CurbDog on Doityourself.com
  4. Image #4: William Rose

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New Green Building Products — May 2014

An ERV that dehumidifies, a tiny ventilation system for single rooms, a rugged ventilation baffle, a cap for recessed can lights, and a tape for XPS seams

Posted on May 30 2014 by Martin Holladay

UPDATED on January 24, 2018

It’s time once again to take a look at a few interesting new building products. I recently spotted two potentially useful ventilation products — a new type of ERV(ERV). The part of a balanced ventilation system that captures water vapor and heat from one airstream to condition another. In cold climates, water vapor captured from the outgoing airstream by ERVs can humidify incoming air. In hot-humid climates, ERVs can help maintain (but not reduce) the interior relative humidity as outside air is conditioned by the ERV. and a fan for ventilating small rooms — and two products that are destined for attics — an insulating “hat” for recessed cans and a ventilation baffle that can be installed between rafters. I will also report on JointSealR, a tape distributed by Owens Corning for taping XPSExtruded polystyrene. Highly insulating, water-resistant rigid foam insulation that is widely used above and below grade, such as on exterior walls and underneath concrete floor slabs. In North America, XPS is made with ozone-depleting HCFC-142b. XPS has higher density and R-value and lower vapor permeability than EPS rigid insulation. seams.


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Image Credits:

  1. Air Pohoda
  2. 475 High Performance Building Supply
  3. DCI products
  4. Ecocycle Solutions
  5. Owens Corning

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