Tenex wrote:

Thanks for that any hints on cutting etc? The room has so many odd angles
it'll take forever ...

I've used several methods, here they are in order of preference:

[1] Sliding chopsaw. Great. Every home should have one (start
around £130).

[2] Good quality jigsaw with bimetal blade. Pretty good, but
much slower than [1].

[3] Hardpoint saw (handsaw). Good cut, but takes ages and is
hard work.

--
Grunff