No skills":4clm2cai said:
Solid wall on this old rubbish box we live in.
For clarity (for me, sorry for any thread hijacking!!), for this sort of repair is the new wood just bolted onto the side of the old rafter or is a new bit put on the end of the old rafter (rotten bit removed) and then a second piece of timber used to bolt the two together?
Doesn't matter as long as the repair is solid, the spacing centres are kept the same and it's strong enough to carry the not inconsiderable weight of concrete tiles / slates. - Over spec the repair rather than under and bolt timbers both sides if in doubt.
It's many moons since I've repaired rafters or trusses for anyone but have carried out a large number of felt repairs. Failure is down to poor building practice of using a combination of standard bitumen type slaters felt with no support under the bottom 300mm or so. Result, the felt sags and collects water and rots and birds also find a way in and peck through it.
You can buy pre-formed plastic support trays which solve the problem but are expensive. An alternative is to fix 4mm wbp ply to the bottom 300mm or so, buy a roll of 300 or 450 wide DPC and use that over and bent down as a drip into the gutter then overlay your existing felt on top. The existing felt is likely to be ok apart from the bottom section but if you have to replace it, use fabric underlay (I use Tyvek), instead of felt and the problem is solved for many years.
Sounds complicated but pretty easy, can sort diagrams if nec.
To remove the tiles just go up as far as you think necessary, say 3 or 4 and puch that row upwards to expose the tile below. If not nailed then dead easy, if they are you need a slaters rip (tool) and pray they've used alloys and not galvs :roll:
Bob