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Installing an ERV in an Unvented Attic - GreenBuildingAdvisor I’m finally done with the insulation project and trying to move on ERV project I have bought Panasonic FV-10VE1, have some questions regarding ERV and unvented attic The insulation on […]
Using RockWool in between roof rafters? - GreenBuildingAdvisor From what I understand the conditioned space should be at the slope of the roof if my duct work will be up in the attic, would putting RockWool insulation in between the rafters be acceptable?
Should I block the gable vents now that the house has new ridge vents . . . John, 1 The traditional advice would be to block the gable vents Research shows that the most effective combination of attic vents is soffit vents + ridge vents, without any gable vents 2 In reality, however, either way is fine -- because attic venting is less important than most people think For more information on this issue, see All About Attic Venting 3 Although Charlie is right
Attic Upgrades and Ventilation - GreenBuildingAdvisor BGG had an energy audit done, which informed his plan to remove the existing fiberglass batts, air-seal the attic, install a ducted heat pump system, then blow in cellulose insulation He asks if, while the attic is empty, it is a good time to perform other upgrades He is particularly interested in whether mechanical ventilation should be added
Adding a ridge vent without vented soffits - GreenBuildingAdvisor Jacob, Q "Is there is anything wrong with adding a ridge vent knowing they have no soffit vents?" A Yes If the house has a leaky ceiling -- most houses do -- adding a ridge vent without sealing all of the ceiling air leaks can make things worse The new ridge vent contributes to attic depressurization, and the result is that more conditioned air is pulled through the ceiling leaks, raising
Ducts in an Unconditioned Attic - GreenBuildingAdvisor Running unprotected ductwork through an attic can court problems Particularly in hot-humid climates, moisture can collect on the outside of ducts in summer Encapsulating ducts in closed-cell foam or following code-prescribed methods for burying ducts in insulation can prevent the problem Illustration courtesy Home Innovation Research Labs
Should I vent my unvented garage attic? - GreenBuildingAdvisor I’m building a new single-story single-family house with an unvented attic and am looking for input on how to address my attached unvented garage attic The home is located in Northern California in climate zone 3-C (Marine), so mild weather year-round