Originally Posted By: Rafael This post was automatically imported from our archived forum.
hi
?, on older homes say 1963 example where homes constructed to have no roof vents because my friend asked me about it because he could not find gable vents or any under eaves.
Originally Posted By: Jay Moge This post was automatically imported from our archived forum.
gable vent are the easiest way to add some ventilation. they come as a unit and the better ones have a powered fan with seasonal t-stat. helps the roof last longer, 'cuz in the long run a roof is more expensive than heating costs.
Originally Posted By: jonofrey This post was automatically imported from our archived forum.
bemelander wrote:
I agree with Larry, All homes would benefit with adequate ventilation.
Bill
Can't quite agree with that. Some modern homes are insulated between the rafters using Icenene. This effectively turns the attic space into conditioned space with no ventilation. The only air brought in is for combustion and fresh air.
Originally Posted By: lkage This post was automatically imported from our archived forum.
jonofrey wrote:
bemelander wrote:
I agree with Larry, All homes would benefit with adequate ventilation.
Bill
Can't quite agree with that. Some modern homes are insulated between the rafters using Icenene. This effectively turns the attic space into conditioned space with no ventilation. The only air brought in is for combustion and fresh air.
I'm not familiar with Icenene. Maybe it's like SIPs panels (which I forgot about). But then what about shingle warranties? I believe they require the roof deck to be ventilated. I suppose one could ventilate on top with 1" space.
R806.1 Ventilation required. Enclosed attics and enclosed rafter spaces formed where ceilings are applied directly to the underside of roof rafters shall have cross ventilation for each separate space by ventilating openings protected against the entrance of rain or snow. Ventilating openings shall be provided with corrosion-resistant wire mesh, with 1/8 inch (3.2 mm)
minimum to 1/4 inch (6.4 mm) maximum openings.
-- "I have never met a man so ignorant that I couldn't learn something from him."
Galileo Galilei
Originally Posted By: aslimack This post was automatically imported from our archived forum.
My guess is that a home built in 63’ had gable venting that may have been covered up with newer siding without cutting the vents out. I’m sure you could tell this from the attic. Many roofers and siders are efficient at installing the roof or wall covers but don’t know jack about the science of ventilation.
Inadequate attic venting will also contribute to nail pops.
