Flat Roof Joist Overhang

With a flat shed roof the roof simply extends past the wall plate to provide an overhang.

Flat roof joist overhang.

This patio roof conjures up images of japanese houses. Time and i ve figured out that 14 i joists at 2 on center is similar to 2 12 s at 16 on center the span is about 22 feet 10 pitch. If you want need a soffit don t forget to leave enough overhang on the ends of the joists. Hi we recently completed an extension which had a flat roof.

In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. For gabled roofs the roof rafters extending beyond. Area span on the flat please enter area span on the flat in foot. Because this style of a shed has a flat roof it can facilitate a wider overhang which is ideal for storage.

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. Input the rafter span on the flat eave overhang and pitch of the roof. This house will have a gable roof and a 16 center area with a cathedral ceiling over the living and dining room areas the roof pitch will be 5 12 with a cathedral ceiling at a 2 5 12 slope the overhang will be 2 around the whole house the trusses on the ends of the house will be drop top gable trusses. 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.

9 x 3 joists were used as. The latticework allows natural light to pass through so that you will be covered partially. For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. I m trying to balance cost vs.

The size of the roof overhang you choose depends largely on the style of your shed s roof. The wooden posts support the exposed beams that overhang a little bit. Compare click to add item 24 spreadweb residential roof truss 5 12 pitch 87 to the compare list add to list click to add item 24 spreadweb residential roof truss 5 12 pitch 87 to your list sku 1889754. Click the button to calculate the stock size needed for this job.

This calculator is to be used as an estimating tool only. The tables below give maximum spans for rafters and beams. You will need to make a ladder on the two side walls which has the same amount of overhang as the front edge so that you get an even soffit all around the roof.