House Roof Joists

A mono truss is a one sloped truss that forms a right angle triangle.

House roof joists.

A mono truss roof allows for more sunlight and visual space proper drainage and relatively cheaper. After that to make it flush with the roof of the existing house cut the two outer rafters. A stick framed house used 20 643 board feet of lumber while a component framed house including roof trusses used only 15 052 board feet of lumber. Types of mono trusses 1.

The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial. Now you can begin assembling the outer rafters and attaching the rafter beam to the edge of the roof of the house. Before you cut your boards you ll need to measure the width of your building and calculate the exact length of each rafter. If you re framing a gable roof on a new house or building a shed or even a doghouse with a gable roof you ll need to cut a number of roof rafters.

Also different architectural styles will use the same type of roof. A fascia board which is a roofing material that helps compensate when there are inevitable inconsistencies in rafter length will mount on the front and on the sides of your porch roof frame. Floor beam span tables of residential structural design we will now look at roof rafter and beam design. That is 25 less lumber which means more money in your pocket as the builder and more money in the pocket of the homeowner.

Here we have a wood framed gable roof. The roof rafters provide integral structural support to the roof. Continuing on from part 3. Frame your porch roof by continually adding rafters until it extends one foot past your porch walls or support columns.

They come with or without a paper or foil facing that acts as a vapor barrier. It s often used for sheds garages or extension of an existing roof. 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. Cut each of the house ends while continuing installing the rafters so that they fit the top of the rafter beam perfectly.