Hello,

I'm soon going to be building a 4m X 4m Vudas Devon "log cabin". I've put
down a concrete base and the shed comes with pressure treated bearers for
the base (on to which the floorboards will be fitted). The instructions have
the bearers installed in parallel, presumably so that air can circulate
underneath the shed. If I install the bearers so that there is no air gap
(basically, lay 4 bearers in a square, the rest in parallel) on top of a
waterproof membrane, I can then add insulation under the floorboards. My
question is will any benefit gained by having the insulation be lost by lack
of air circulation.

Many thanks,

Glenn

Glenn wrote:

If I install the bearers so that there is no air gap
(basically, lay 4 bearers in a square, the rest in parallel) on top of a
waterproof membrane, I can then add insulation under the floorboards. My
question is will any benefit gained by having the insulation be lost by lack
of air circulation.

The visquene will eventually be a pool membrane. Even if you vent it
that is going to be a temporary but recurring problem.

If you want the shed insulated from below, by all means put a layer of
something on top of the bearers before adding the boards. Either thant
or lay something on top of the floor boards afterwards.

Putting enclosed cavities under a shed is asking for pest infestation.

"Weatherlawyer" wrote in message
oups.com...

Glenn wrote:

If I install the bearers so that there is no air gap
(basically, lay 4 bearers in a square, the rest in parallel) on top of a
waterproof membrane, I can then add insulation under the floorboards. My
question is will any benefit gained by having the insulation be lost by
lack
of air circulation.

The visquene will eventually be a pool membrane. Even if you vent it
that is going to be a temporary but recurring problem.

If you want the shed insulated from below, by all means put a layer of
something on top of the bearers before adding the boards. Either thant
or lay something on top of the floor boards afterwards.

Putting enclosed cavities under a shed is asking for pest infestation.

Many thanks for that, I had not considered things living underneath it...

Cheers,

Glenn

"Glenn" wrote in message
...

"Weatherlawyer" wrote in message
oups.com...

Glenn wrote:

If I install the bearers so that there is no air gap
(basically, lay 4 bearers in a square, the rest in parallel) on top of a
waterproof membrane, I can then add insulation under the floorboards. My
question is will any benefit gained by having the insulation be lost by
lack
of air circulation.

The visquene will eventually be a pool membrane. Even if you vent it
that is going to be a temporary but recurring problem.

If you want the shed insulated from below, by all means put a layer of
something on top of the bearers before adding the boards. Either thant
or lay something on top of the floor boards afterwards.

Putting enclosed cavities under a shed is asking for pest infestation.

Many thanks for that, I had not considered things living underneath it...


There was a nest under the old rotten shed I have replaced with a stonking
12' x 10' on a concrete base (ordered off t'interweb [shed that is] - very
good).

I am looking for:

a) plastic [coated] mesh to go round base to stop ingress of leaves rubbish,
and vermin to the under shed area
b) steel mesh to go over the insides of the plastic windows (that you can
just punch out). Where do peeps here go for such stuff?


--
Bob Mannix
(anti-spam is as easy as 1-2-3 - not)