The boards creating the slope of the roof are wider than lumber used to build trusses 2x8s 2x10s and 2x12s are most common in rafters vs.
Slate roof trusses.
This 26 span truss with a 4 12 roof pitch is the most economical truss we can build.
Translucent roofing is great for solariums greenhouses and sun rooms and is often coated to offer additional uv protection.
If we go any larger it will require more webbing inside the truss which will directly affect the cost of the truss.
Opaque foam back polycarbonate roofing is often used in industrial settings.
The same is true if we make it steeper.
This includes the roof deck and the supporting structure typically roof trusses and or rafters as well as the roof system itself.
Corrugated roofing wood beams metal roofing panels 2x4 in.
Slate roofing 1 4 inch slates.
Or greater trusses custom truss related products 2 in.
They are designed at a 4 12 pitch to be spaced 2 foot on center.
Rafter boards are fastened to the ridge board at the peak and the top plate where they join the wall.
Slate roofs national slate association 1926.
In finished space insulation is placed between the rafter boards and drywall or other material is fastened to the face.
The usual decking to which slate tiles are nailed is solid wood 3 4 to 1 inch thick.
Other commonly used modern building materials that depend on glue for their integrity such as laminates and wafer board will deteriorate long before the slate does.
At lowe s we carry roofing materials from the top brands in the industry.
For instance the material is used in roofing might be slate and that will mean that the roof trusses are built with different spacing and different material than for instance the material and how far to space roof trusses if you had say an aluminum roof.
Steeper roof pitches require longer webs which add to the cost.
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.
If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center.
Versa stud lvl sp 2650 1 7 3 piece per box.
Pre manufactured stock trusses are constructed with spruce pine fir spf or southern yellow pine syp lumber.
Manufacturer technical data sheets with the material weights.
The longevity of a slate roof is only as good as its support structure.
As a general rule roofs that have a high human occupancy rate should be framed with rafters every 16 structures such as sheds or barns can be frames with rafters every 24 again make sure to consult local codes.
