Flat Roof With Overhangdetails

But are they really necessary.

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. Corrugated panels are more prone to bend under heavy snow loads. Chapter 9 2 wood. Roof overhangs at the eaves and rakes protect the walls below from rain and sun.

The steeper the roof the more expensive the trusses get because the longer the boards get and the more roof area increases. Metal roofing can be used on any pitch or slope of roof. The siding underneath the overhang is known as the soffit. If the wind is.

Roof overhangs are the amount that the roof hangs over the top of the siding in residential home construction. 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. The exposed timber rafters and decking are susceptible to ignition and embers and hot gases can enter the attic through. To these roofs and adjacent wood construc tion.

The vertical rise of the top chord per 12 horizontal inches is the roof pitch or slope. Metal roofs also require particular attention especially the length of flat metal roofs. Figures 9 7 and 9 8 show some conditions commonly encountered. The tradeoff between solar heat gain and shading.

Other roof protrustions sothat notiiing obstructs tiieflow ofair from eave to ridge. For homes built in the northern hemisphere i e. For example 4 12 pitch means 4 inches of rise in 12 inches of run. 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.

You will also incur additional costs because. Metal panels untreated wood panels and vinyl attic vents figure 1. Soffits are commonly constructed from fiber cement panels metal panels stucco vinyl panels or wood sheathing.