chipper

Spot on thanks a lot.

Hi all ,i am hoping to fit new loft hatch with ladder for better access .And then thinking of boarding out and insolating in the rafters Someone said i will have to strenthen the joists witch i know .One way is to double up the joists witch i also knew.secondly to have a hangger from rafter to joist ,any help on this matter to help me, thanks in advance