Chipboard grades

The T&G stops the drafts comming throught the gaps, the green cloating makes it sort of water restistant.

I have used normal chipboard to fill in odd shaped holes in floorboards where some itiot has cut a patchowrk out for new wireng.

Use the proper green stuff in wet rooms, even then don't get it wet ..

Rick

In article , Arthur writes

Builders don't even do that

need to be at least 15, preferably 18mm.

They do. Oh. You mean they leave joints hanging - yes. Ive sen that.

There are *lots* of things that builders dont do on other people's properties that they would do on their own. Cutting the lengths so that joints are on top of joists is, IMHO, a good thing.

Similarly with wiring- I try and install three-core-plus-earth in lighting circuits because it can make life so easy when you need to change the switching arrangement.

Adding in isolation valves in plumbing can be a godsend too.

There is (of course) a limit to these "contingency" items, but taking a little extra time to ensure that the joints are over joists is very worthwhile in my book.

Mungo

seen quarter inch ply used once: the floor bent badly as you walked over it :) Some folk eh!

Regards, NT