I'm overlining my shed floor with 50mm celotex and some sheet material.

OSB3 seems cost effective and I know it will not mind a bit of damp or
spilled water.

So, on top of well supported celotex - 11mm or 18mm?

The shed will have heavy stuff stored, but spread out - no massive high
point loads like machinery...

On Sunday, September 28, 2014 11:21:16 PM UTC+1, Tim Watts wrote:

I'm overlining my shed floor with 50mm celotex and some sheet material.
OSB3 seems cost effective and I know it will not mind a bit of damp or
spilled water.
So, on top of well supported celotex - 11mm or 18mm?
The shed will have heavy stuff stored, but spread out - no massive high
point loads like machinery...

ISTR 11mm not being any cheaper in OSB3. 11 should be fine though if you've already got support in place.

I dont know anything about this shed, but with most sheds insulating the floor makes temp swings worse.


NT

On 28/09/2014 23:21, Tim Watts wrote:
I'm overlining my shed floor with 50mm celotex and some sheet material.

OSB3 seems cost effective and I know it will not mind a bit of damp or
spilled water.

So, on top of well supported celotex - 11mm or 18mm?

The shed will have heavy stuff stored, but spread out - no massive high
point loads like machinery...

Instinctively 18mm. 11 may well be fine, but 18mm will be that much more
sturdy and reassuring.

On 28/09/2014 23:21, Tim Watts wrote:
I'm overlining my shed floor with 50mm celotex and some sheet material.

OSB3 seems cost effective and I know it will not mind a bit of damp or
spilled water.

So, on top of well supported celotex - 11mm or 18mm?

The shed will have heavy stuff stored, but spread out - no massive high
point loads like machinery...


Looking at Wickes prices 18mm is about £4 a sheet more than 11mm.

Is it worth mucking about to save very little?


--
Dave - The Medway Handyman www.medwayhandyman.co.uk

On Monday, September 29, 2014 8:24:34 AM UTC+1, The Medway Handyman wrote:
On 28/09/2014 23:21, Tim Watts wrote:
I'm overlining my shed floor with 50mm celotex and some sheet material.

OSB3 seems cost effective and I know it will not mind a bit of damp or
spilled water.

So, on top of well supported celotex - 11mm or 18mm?

The shed will have heavy stuff stored, but spread out - no massive high
point loads like machinery...
Looking at Wickes prices 18mm is about £4 a sheet more than 11mm.
Is it worth mucking about to save very little?

18mm would be fine with no floor under it, just bearers. This shed has a fully supported floor already. I don't think there'd be any mucking about involved. Spend the few quid on something where it makes a difference.


NT

On 29/09/14 09:58, wrote:
On Monday, September 29, 2014 8:24:34 AM UTC+1, The Medway Handyman wrote:
On 28/09/2014 23:21, Tim Watts wrote:
I'm overlining my shed floor with 50mm celotex and some sheet material.

OSB3 seems cost effective and I know it will not mind a bit of damp or
spilled water.

So, on top of well supported celotex - 11mm or 18mm?

The shed will have heavy stuff stored, but spread out - no massive high
point loads like machinery...
Looking at Wickes prices 18mm is about £4 a sheet more than 11mm.
Is it worth mucking about to save very little?

18mm would be fine with no floor under it, just bearers. This shed has a fully supported floor already. I don't think there'd be any mucking about involved. Spend the few quid on something where it makes a difference.


NT


Thanks for all the opinions

On Monday, September 29, 2014 8:24:34 AM UTC+1, The Medway Handyman wrote:
On 28/09/2014 23:21, Tim Watts wrote:
I'm overlining my shed floor with 50mm celotex and some sheet material.

OSB3 seems cost effective and I know it will not mind a bit of damp or
spilled water.

So, on top of well supported celotex - 11mm or 18mm?

The shed will have heavy stuff stored, but spread out - no massive high
point loads like machinery...
Looking at Wickes prices 18mm is about £4 a sheet more than 11mm.
Is it worth mucking about to save very little?

Look online to get them cheaper - I cant remember who it was, but they were much less than the usual BMs, with 11&18mm coming in at more or less the same price.


NT

On 28/09/2014 23:21, Tim Watts wrote:
I'm overlining my shed floor with 50mm celotex and some sheet material.

OSB3 seems cost effective and I know it will not mind a bit of damp or
spilled water.

So, on top of well supported celotex - 11mm or 18mm?

The shed will have heavy stuff stored, but spread out - no massive high
point loads like machinery...

shuttering ply.