shim low pitch joists?

[turnpike]

I'm replacing the roof on a "sun room" but it's nearly flat 5%. I'm not using firrings, the ceiling will slope as it did. The thing is, cutting birdsmouths that shallow is fiddly as it's barely even the kerf of the saw blade.

Can I use shims instead? If so can I buy them and are they angled?

Cheers,
Carl.

 

[noseall]

Don't even bother just fix 'em on. there will be very little outward thrust to even warrant a bm.

 

[turnpike]

Won't all the downward force be applied to the edge of the plate though? If I leave them barely in contact with it?

 

[noseall]

If you are that worried run yer planer along the edge of the plate to give you the cant.

 

[datarebal]

i'd probably fix them flat and use a firring..but fixed to the plate as nose sujest would be fine. use a packer if it helps you sleep..

 

[turnpike]

cheers noseall.

datarebal i would too but i'm keeping it the same as the roof continues from the attached garage where the little bit extra height makes a difference.

 

[WestmidsChippy]

did i just read roof and packer in the same thread

Get back to pointing them ther bricks you lazy fook

 

[datarebal]

but i thought you said the difference was thinkness of a saw blade...? not much to lose in headroom is it.