cutting awkward alcove floor

[JohnD]

I have been replacing the loathsome chipboard flooring in my bathroom. there is a section that it difficult to cut, I wonder if there are any clever ideas.

There is a sort of alcove which used to accommodate the end of the bath, where the stud wall pushes into the airing cupboard. This is about 600mm x 200mm. The joists run along the 600mm way and there is a plasterboard partition wall standing on the floor (the soleplate stands on the chipboard and there is not a joist directly under it, however the partition is about half-height due to the ceiling slope, and the studs should be OK to take any weight as the wall is only 600 wide. I will nog it after cutting away the floor.

I am finding it difficult to get a saw against the wall to cut out the old chipboard in this alcove. I can't get a circular saw tight against the walls, and I don't want to use a reciprocating saw as there are pipes and cables under.

I can only think of using a tenon saw with very short strokes, knocking into the wall at each end. This is very tiring and annoying.

Is there an easier way?

 

[big-all]

you have my sympathy nighmare job

sometimes the only way you can do it especialy in alcoves cut what you can with the circular saw /jigsaw/recipsaw

then a 5mm score where the floor meets the wall with a hardpoint saw held against the wall using about half the blade length to cut with the back of the blade virtualy touching the floor but not quite
you could screw a batton to aid this prosses you could either continue till you have cut through or
take an oldish chisel and with the chisel about 5mm from the bottom at a slight angle so it breaks out the bottom
and keep chipping away taking 5mm slices then eventualy you will have a clean edge

just be wary of of wires and pipes [i know you know this john d ]
and fixings holding the floor to the wall [hence the old chisel ]