Roof Joist Construction Details

Good installation begins with specification of the correct joist for the application.

Roof joist construction details.

Lay 10 or 12 inch tiles with 1 inch head lap on the sides of dormers. End bearing with rim board. Intermediate bearing with blocking panels. This will give additional stability to the roof structure.

The construction of the flat roof is similar to that of the timber upper floor. For additional stability you can also use steel joists that are built into one or both of the walls. End bearing in hanger on a top plate. In the uk a concrete tiled roof would normally have rafters at 600 mm 24 in centers roof battens at 300 mm 12 in centers and ceiling joists at 400 mm 16 in centers.

Lay all tiles within 1 foot of hips ridges and abutting vertical surfaces in roofer s cement. End bearing with blocking panels. I joists in floor and roof applications. End bearing with rim joist.

The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls. The united states still uses imperial units of measurement and framing members are typically spaced sixteen or twenty four inches apart. I joist construction details. Secure each tile with two large head roofing nails.

End bearing in hanger supported by a beam. End bearing in hanger supported by i joist s 44kb. Double the tiles at eaves and project them 1 inch over the rear edge of gutters.