Attic floor over loose fill insulation

[joaj]

My attic currently has only about 2 square meters of walkable space, the rest is covered with loose-fill insulation. Since I would like to store some things up here, I was thinking of nailing some joists to the rafters and laying down tongue and groove boards. Thoughts on this? The floor won't be flush against any wall; it will be like a platform around the attic opening, with the longest continuous span being about 3 meters. The concern is potential condensation, but that shouldn't be a problem, right? Should the joists and boards be treated beforehand? Or is the risk of mold small enough? Are the joists best attached with nails or screws?

 

[ByggaNytt]

Hello and welcome to the forum!

Sounds like a good idea!

http://www.familjenlindstrom.se/images/losull.jpg

No "treatment" needed and screws always hold better than nails

 

[joaj]

Hello and welcome to the forum!

Sounds like a great idea!

[link]

No "treatment" needed and screws always hold better than nails

Thanks, then it's off to the lumberyard after work.

 

[ByggaNytt]

Yes, a good timber yard is worth its weight in gold!

Here's how I built my "kryp":
http://www.familjenlindstrom.se/images/byggahus/kryp.jpg

 

[Mats]

I made it very simple for myself by using 125X38 boards laid as decking with a 1-2 cm gap between the planks. That way I avoid the need for tongue and groove and it still ventilates fairly well.