How To Extend Flat Roof Joists

This demo version is fixed at 1m clear span.

How to extend flat roof joists.

Measure and cut 2 by 4 joists to span the distance between each set of joist hangers. 1 enter joist details 1 1 span and joist spacing. While roof overhang depth can differ depending on the style of the home standard overhangs extend outward about 24 inches. If attaching a patio roof to a ledger beneath the eaves does not allow for enough headroom you can set the new patio roof s rafters on the wall s top plate.

You will likely have a budget for the project and in this case learning that a flat roof generally costs less than a pitched roof will be good news. I cant extend these 2 steel beams as they are below the joists level. Flat roof extension cost. On a two story house you can usually tie the ledger into a band joist also called a rim joist located between the floors as shown below.

How to tie a additions roof to existing roof roof designs to attach to existing home how to construct a roof from an exsisting shead how to attach a deck roof to existing roof how to add a roof over porch cost to tie into existing roof attache porch roof on house attach shed roof to house adding a roof to screened in porch adding a roof to existing. This is the distance between joist centres. Use your power drill to make pilot holes through the hangers and into the joist. The full version allows any size.

Drive screws into each pilot hole to fasten the joists in place. If you want to extend the rafters farther to cover a walkway or a porch. Flat roof joist calculator. Overhang flat roof timber joists.

Repeat the process at both ends of each joist.