Standard Roof Overhang Northern Michigan

Recommended home insulation r values.

Standard roof overhang northern michigan.

Eave overhangs shall not exceed 24 inches 610 mm measured horizontally. Roof slope multipliers for roof components of sloping roofs multiply by the figures given below to obtain the cost per square foot of horizontal projection. The siding underneath the overhang is known as the soffit. R value is a measure of insulation s ability to resist heat traveling through it.

Insulation level are specified by r value. Rise multiplier rise multiplier 1 to 12 1 01 6 to 12 1 12 2 to 12 1 01 8 to 12 1 20 3 to 12 1 03 12 to 12 1 42 4 to 12 1 06 15 to 12 1 60 5 to 12 1 08 18 to 12 1 80. Although there is no single standard roof pitch used on all sloped roofs factors such as roofing materials and local climate help to determine the appropriate range of pitches for a given building. Astm a240 300 series alloys.

The construction of a roof overhang is one important way that homeowners can protect the exterior of their home and preserve its value. In designing the overhanging part of a. Weather and not properly protected by a roof eave or similar covering table r802 11 required strength of truss or rafter connections to resist wind uplift forcesa b c e f pounds per connection r804 3 2 1 1 eave overhang. Roof covering type standard application rate thickness.

Figure r804 3 2 1 2 gable endwall overhang. The state has amended the snow load requirements of the 2009 ibc figure 1608 2 and the 2009 irc figure r301 2 5 table r301 2 1 and table. They can also include certain architectural features that make overhangs more than just functional parts of the home. Roof overhangs are the amount that the roof hangs over the top of the siding in residential home construction.

12 oz sq ft for preformed. Use our michigan ground snow loads map to easily determine the ground snow load 2009 michigan building code. In order to stay intact and in place a roof must be able to resist loads both permanent and temporary that are pushing. You can click on the map below to find the design ground snow load for that location.

Load limits on the roof of a building. Figure 1608 2 for any location in the state of michigan. Astm b370 minimum 16 oz sq ft and 12 oz sq ft high yield copper for metal sheet roof covering systems. The length of the overhang depends primarily on the climate.

Astm a653 g90 zinc coated.