Hello!
We have a so-called warm parallel roof, with a 25 mm air gap and ventilated eaves that go from eaves to eaves on the other side of the house. The ridge has no separate ventilation, so the air goes straight past the ridge and out the other side of the house, so to speak.
There are insect nets in the eaves, but no other protection. I have seen on various forums and articles that blowing snow can enter through the eaves, and of course, this sounds a bit alarming. The air gap is only masonite, which doesn't seem ideal against melting snow.
Theory is one thing, but how big of a problem is this in practice? The northern facade of the house (one eave) faces a field, so the predominantly northwesterly winds blow on that facade. The other side of the house is forest and rock.
Do I need to worry? Is it important to have good snow protection? I live near Lake Mälaren.
We have a so-called warm parallel roof, with a 25 mm air gap and ventilated eaves that go from eaves to eaves on the other side of the house. The ridge has no separate ventilation, so the air goes straight past the ridge and out the other side of the house, so to speak.
There are insect nets in the eaves, but no other protection. I have seen on various forums and articles that blowing snow can enter through the eaves, and of course, this sounds a bit alarming. The air gap is only masonite, which doesn't seem ideal against melting snow.
Theory is one thing, but how big of a problem is this in practice? The northern facade of the house (one eave) faces a field, so the predominantly northwesterly winds blow on that facade. The other side of the house is forest and rock.
Do I need to worry? Is it important to have good snow protection? I live near Lake Mälaren.
Self-builder
· Stockholm
· 8 592 posts
I have a cabin in Dalarna (a lot of snow in winter) with that construction.
I only have an insect net at the eaves, which works well, never had a problem with snow underneath.
Now I have built up one of the eaves where I moved out the insect protection under a sparse panel, which still provides ventilation (I have also embedded spotlights there as porch lighting) - so there's definitely no longer a problem there, but the other side is as before without issues - 8 years since the house was built.
Can't find a really good picture of the eaves, this was the closest I got:
http://3.bp.blogspot.com/_v2sjyoykuIE/SUVG4qNZoxI/AAAAAAAAAdI/jiBcQDJLu1U/s320/DSCF4046.JPG
The icicles are because I was in the cabin that weekend and "kept the fire going" - now the gutter is installed though
/K
I only have an insect net at the eaves, which works well, never had a problem with snow underneath.
Now I have built up one of the eaves where I moved out the insect protection under a sparse panel, which still provides ventilation (I have also embedded spotlights there as porch lighting) - so there's definitely no longer a problem there, but the other side is as before without issues - 8 years since the house was built.
Can't find a really good picture of the eaves, this was the closest I got:
http://3.bp.blogspot.com/_v2sjyoykuIE/SUVG4qNZoxI/AAAAAAAAAdI/jiBcQDJLu1U/s320/DSCF4046.JPG
The icicles are because I was in the cabin that weekend and "kept the fire going" - now the gutter is installed though
/K