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I don't know how much I contribute, but I have installed horizontal paneling (raw spruce 21mm) on cc1200 with 215mm insulation. It worked well without any buckling at about a 45-degree slope. However, I would have definitely thinned if it was over 300mm insulation.
PS. Do you need 400 here in Skåne? In any case, it was damn cold this winter, but then the upper floor was without anything at all! I reckon "cold" that 215 is enough, and many others I've spoken to in new constructions have only 195).
PS. Do you need 400 here in Skåne? In any case, it was damn cold this winter, but then the upper floor was without anything at all! I reckon "cold" that 215 is enough, and many others I've spoken to in new constructions have only 195).
Gullfiber Kretsull I 26 kg/m3
Rockwool loose wool 127-03 33 kg/m3
Ekofiber Wind 32 kg/m3
http://www.sitac.se/download/Press om Sitac/Råd & Rön på nätet - Lösull, isolering.htm
Rockwool loose wool 127-03 33 kg/m3
Ekofiber Wind 32 kg/m3
http://www.sitac.se/download/Press om Sitac/Råd & Rön på nätet - Lösull, isolering.htm
(still don't understand how to quote by inserting text, but trying as above, if it doesn't work, can someone please tell a slow learner)
@ Kamilenski: did you mean if 285mm insulation is enough? Sure, there are recommendations for 400-500mm in new constructions, but I believe one must also consider the applicability in renovations. My father-in-law is building new in Härjedalen and has 500mm in the roof. I understand that very well since there are longer periods with -30 degrees and he is building new, but in Skåne where the annual average doesn't go much below +10 degrees, I find it overkill, especially if you are short on space and don't want to encroach too much on your upper floor. 285 is more than sufficient in my opinion. (another tip is to spray insulate, working with multiple boards is extremely hard work, especially if you have an older house with inexact centers).
Best regards,
//H
Apparently it worked d^_^bpå landet said:
It's not me personally who will be insulating. I'm helping a young friend with his new construction. It's about a new Älvsbyhus with an attic that can be furnished. Ä-hus left a large number of rolls of 95mm insulation that should have been laid on the floor of the attic. To meet the new energy requirements, one should roll out 2x95mm. Since the attic will be furnished, we thought we could use the 95mm insulation.
I've figured out the simplest and cheapest way to work with it. This would mean that the first roll of insulation should be laid vertically. The second horizontally and the third vertically again.
However, this requires that the extension is done in a way that makes this possible. The solution lies in extending on the side of the collar beam and the brace so that a gap of 95mm is formed between the extension and the truss. Instead of plaster or something else, we are thinking of nailing regular 21mm outdoor paneling that will be painted later. All installation of all media will take place in the attic. The roof itself on the second floor should have 5x95mm insulation. We'll see what those at the building committee say...
That's not correct. 33 kg/m3 becomes 330 N/m3, becomes 33N/m2 at 10 cm.cust3000 said:
At 40 cm it becomes 4*33=132 N/m2 or approximately 13 kg/m2 at 400 mm insulation.
400 mm in a sloped roof is way too much. Around 200 mm is enough. In the ceiling, they prescribe 300 mm for us in southern Sweden. However, it's important to alternate the insulation horizontally and vertically to avoid any thermal bridges. I personally laid 120 + 45 + 45 in my sloped roof and had 17 degrees as the lowest in winter, and this without any heat source on the second floor!
Looks good kamilenski. However, I agree that there's a lot of insulation but soon it will probably be the building standard with 1m insulationkamilenskiHere's how it's planned.
Just waiting for the go-ahead from YOU and the building committee
. Don't get me wrong, if I had enough space, meaning that it doesn't encroach on the living area too much, I would have taken more than what we have today. AND spray-insulated, but that's another story.