Loft boarding thickness help?

[rocker]

Here's a nice quick one, does anyone know if 9mil OSB3 would be OK to board out an attic for occasional use? Standard joists with good noggins. Ta!

 

[topquark]

In a word no. Not even for occasional use IMHO. I would use 12mm for occasional use and 18/22mm for fairly regular use.

 

[rocker]

Coolio, thanks

 

[telectrix]

Noggin the Nog. how many of these have you got?

 

[Guest123]

Good old inch ply......jobs a good un!!

 

[topquark]

Blimey that's a blast from the past, just about remember that!

 

[rocker]

Good old inch ply......jobs a good un!!

Oooosh 'spensive!

 

[telectrix]

demolition yard. reclaimed timber, worm holes included foc

 

[Guest123]

Oooosh 'spensive!

Bang Tidy though!!!

 

[topquark]

Try your local Magnet Newport / Wales - Magnet
pretty good for board materials if you can strike a bargain, particularly celotext (or if you're feeling flush go for tri iso super 9/10) for additional insulation.

 

[rocker]

Magnet ey, I thought they were meant to be super expensive. I'll go and have a chat with 'em.

Lenny too right, can imagine the attic floor will be there long after the house has crumbled with 1 inch ply lol!

Tel unfortunately my reclaimation yard has closed, now all I have is an architectural salvage yard and if you know your onions, which I know you do, you'll know that difference between the names means a good ten-times difference between the prices!

 

[Des 56]

I thought Magnets in Newport shut down yonks ago

Get yourself over to Ringland there's plenty of Plyboard on lots of the windows there

 

[High Tower]

Good old inch ply......jobs a good un!!

Id like to see you get a 8x4 through a loft hatch lol

 

[ian.settle1]

Id like to see you get a 8x4 through a loft hatch lol

Rip it down the middle so it is 8 x 2

 

[High Tower]

Rip it down the middle so it is 8 x 2

It was a tongue in cheek comment!

thats why flooring chipboards are 8x2, done more loft floors than i care to remember

Get it............Tongue in cheek..... With wood....... Like tongue and groove...... Get it?? Oh sod it lol

 

[topquark]

Id like to see you get a 8x4 through a loft hatch lol

They often will fit (just) diagonally, if you can get the orientation right from the stairs ... for a typical two/three bed. Normally use TGV chipboard myself though.

 

[SPARTYKUS]

Try your local Magnet Newport / Wales - Magnet
pretty good for board materials if you can strike a bargain, particularly celotext (or if you're feeling flush go for tri iso super 9/10) for additional insulation.

That tri iso stuffs amazing...developed by nasa i believe, did a house (bungalow converted to dormer) and encased top floor in it. Brilliant. We had twenty rolls on site in jan (few grands worth) overnight, my mate kipped on it make sure it wasnt nicked!

 

[topquark]

That tri iso stuffs amazing...developed by nasa i believe, did a house (bungalow converted to dormer) and encased top floor in it. Brilliant. We had twenty rolls on site in jan (few grands worth) overnight, my mate kipped on it make sure it wasnt nicked!

Yep, brilliant stuff, saves a lot of headroom as well for conversions. Usually need 120mm or so at least for celotex + 20mm over the trusses + plasterboard versus 30mm for tri iso (+plasterboard)!