We are currently planning a new building with 9,5x11m, 2 full floors without basement with gable roof 20 degrees roof pitch (without dormers, windows). Since we need storage space our thought is to make the attic accessible through a skylight and use it as storage space. We are aware that the attic is only a small usable area, but it would be enough for some storage space. Now our architect has advised us against this, because according to her the area is not usable.
We would reject an open roof truss because of the insulation. So the question is, more or less – to make the roof truss accessible or to hang it down.
Whether you see such a use as useful and what are your experiences?
I have an attic, the ceiling on the top floor is insulated. I have a completely different angle of slope (of the roof), I write only because of the storage of things in the "cold roof".
It's not like that in the summer, just the opposite, it's very hot up there. I wouldn't even put skis in there. Anything that can't stand the heat can't go in there. Sure, a Christmas tree stand and Christmas balls too, but what else?
Our cold attic is only about 1.5m at its highest point, but I still insisted on having a hatch for the entrance. Everything that has now found its place (leftover shingles and roof panels, decor items, sleds, suitcases, baby cars).
Otherwise, I wouldn't know where to put them. So definitely don't give the space away.
We ourselves have a 22 degree cold roof. Including 24cm insulation there is nothing more walkable. Then it is called high and crawling away and that is only 3m in the middle.
TAN(alpha) = opposite cathetus/adjacent cathetus <=>
opposite cathetus = opposite cathetus * TAN(alpha) = 10/2 * TAN(22°) = 2,02m maximum height under the ridge
Depending on the roof construction and insulation, that leaves 1.60m. It's not much, but it's good for Christmas balls, sledges and Easter nests.
You have to weigh the cost/benefit question yourself.
I would not do without a maintenance hatch in such a cavity. The insulation I would see here on the storey ceiling is sensible and there is no reason why you should not put the box with the Christmas baubles there. More than Rauspund only in the strip around the hatch and laid under the ridge I would not make there as a "floor". Is there a tiny bit of knee height possible, and is it going to be a rafter or truss roof?
We have 25 degree roof pitch, footprint 10 x 10 m and the insulated attic is huge, you can stand well in the middle. Surcharge to the cold attic was small.
Just don't give up storage space, we have 24 degrees at 10.2x9.8 our roof is insulated and upstairs store quite a bit of seasonal decor stuff and toys that are being saved for the next kid.