Phil wrote:
Hi all,

We've just discovered some dry rot in the house whilst renovating the
en-suite (ground floor, in the extension, with a flat fibreglass
roof). We've knocked off
all the plaster and render from the block walls and plan to treat
them
with some
cuprinol dry rot stuff, and we're replacing all the wood from the
room. However, when we took down the ceiling plasterboard, we found
that the rot had touched the ends of two of the joists (about 60cm
worth, from ends towards the middle).

As we've not long purchased the house, cash is kind of tight - we've
got access to
some acro-props if need be - can anyone recommend what the best thing
to do here is? We're edging towards splicing in two new joist ends.


thats the logical thing, if its easier than replacing the whole joist.
Add joist hanger and bolt new section on.

You dont need acro props, just cut wood to the right length and jam it
in to prop it. If youre going to pull it about, it could slip and fall,
so a good idea to attach prop to joist in case it moves.

Rots are caused by damp, dry rot included. (The name is a bit
misleading.) So the most important thing is to fix the source(s) of
water.

I dont know all the dimesnsions, but I'm tempted to say it might be
sufficient on a small roof to simply fit some load spreading noggins
and leave it at that. Depends

NT