Flat Roof With Overhangdetails

The national roofing contractors association recommends structural panels for flat or low slope roofs but corrugated panels are used in some areas with no heavy snow.

Flat roof with overhangdetails.

Overhangs are common in most house designs providing protection against both wind and rain. The tradeoff between solar heat gain and shading. For example 4 12 pitch means 4 inches of rise in 12 inches of run. The exposed timber rafters and decking are susceptible to ignition and embers and hot gases can enter the attic through.

The vertical rise of the top chord per 12 horizontal inches is the roof pitch or slope. Figures 9 7 and 9 8 show some conditions commonly encountered. Corrugated panels are more prone to bend under heavy snow loads. America and canada the most important windows and doors to keep in mind for any roof strategy are the south windows.

If the wind is. The steeper the roof the more expensive the trusses get because the longer the boards get and the more roof area increases. To these roofs and adjacent wood construc tion. Other roof protrustions sothat notiiing obstructs tiieflow ofair from eave to ridge.

Metal panels untreated wood panels and vinyl attic vents figure 1. You will also incur additional costs because. Metal roofing can be used on any pitch or slope of roof. Chapter 9 2 wood.

The membrane proper must be kept in an unbroached condition with all edge conditions either above scupper or drain height until water runoff is complete. Roof overhangs at the eaves and rakes protect the walls below from rain and sun. The siding underneath the overhang is known as the soffit. Metal roofs also require particular attention especially the length of flat metal roofs.

For homes built in the northern hemisphere i e. Soffits are commonly constructed from fiber cement panels metal panels stucco vinyl panels or wood sheathing. Cold roof insulation between rafters wnapor barrier on warm side below orw sheatiiing roofing roofing 2 x 8 sleepers notched for vent aligned wi rafters flashing over rooang fascia sheatiiing 2 x 4 sleepers aligned w rafters provide.