Scissor Truss Over Existing Roof

What is the normal interior slope of the scissor truss.

Scissor truss over existing roof.

Flat the most economical flat truss for a roof is provided when the depth of the truss in inches is approximately equal to 7 of the. Once the trusses soffit and fascia are in place lay the roofing felt in place. Storage trusses work well over garages. Mono and vaulted mono trusses are only sloped in one direction.

The engineer must compute the roof load such as snow accumulation roofing materials and other factors. The same thing is true for the bridge of the truss. An engineering design is my next step. Just wanted to know if it was possible or if the engineers tend to balk at truss mods.

The roof and ceiling can be attached to the same member. The offset scissor truss has a bottom chord that is flat for a distance and then is vaulted up and back down. The partial scissor truss is similar except that the bottom chord slopes up in one direction and then straight down while the remaining portion is flat. There are a few reasons why builders go with stick framing versus roof trusses.

A scissors truss is a really cool roof framing option. The more complex the truss framework is the greater quantity of these joints will be required. Scissors truss installation in an existing roof. The truss span the heel.

The likely design option may involve removal of the existing trusses and replacing them with a scissors truss system which uses about 50 percent of the pitch of the existing roof. Most economical when the difference in slope between the top and bottom chords is at least 3 12 or the bottom chord pitch is no more than half the top chord pitch. Slow rot or a fallen tree might necessitate replacing one or more of your trusses. In order for us to match the current roof we need to know the following.

7 scissor trusses. A scissor truss is a truss that has sloped bottom chords that create a sloping inverted v shape inside the room under the truss. Nail the shingles to the felt starting from the outside in and cutting to fit when you reach a corner or edge. Attic trusses create free bonus rooms.

Disposal run in the range of 300 to 1 800 though it can be as low as 100. Now you can begin shingling your roof preferably with asphalt shingles. These steel joints are needed to support the overall truss. Demolishing existing trusses costs 4 to 5 per square foot.

Once demolition is complete installing a new one is about the same as new construction at 4 to 10 per square foot. Scissors provides a cathedral or vaulted ceiling. You not only get the speed of framing that you get with common trusses but also the added benefits of an interior sloped ceiling.