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Roofing

Roof joists not long enough

Anonymous user 16/03/2024 - 2.34 PM

Hi. I’m building an extension and the plans say it needS to be a warm flat roof. My problem is the roof joists only go as far as the wall plate on the inner leaf. Is it possible to extend the joists to reach over the 100mm cavity and outer skin of brickwork for fixing facia board etc or is there a way I can bridge the cavity and bricks without this

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3 Answers

Anonymous user

If the roof is being stripped just extend the timbers drill and bolt the extension to required length.
Answered5 September 2020
4

Paul Murray

Rating: 5 out of 5
Birmingham
If it’s a warm roof on top of the joist are the firing strips then osb or plywood which can run over the cavity to the outside of bricks or where you want the roof to finish, on top of the plywood or osb put a timber on edge 5+2 the same thickness as your insulation it gives you something to finish your insulation too and fix your fascia
Answered21 September 2020
2

O'connors building services

Rating: 5 out of 5
Newhaven
If you have the space then add a beam across the short ways and then jiffy hang from that to the required distance
Answered2 January 2022
0