Roofing Felt Requirements In Hawaii

Provide drip edge at eaves and gables of shingle roofs.

Roofing felt requirements in hawaii.

Hawaii s past hurricanes that made landfall iniki 1992 and iwa 1982 have shown that hawaii s older houses are more vulnerable to major structural failure from wind forces. The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures. On roofs with a slope of 4 12 or greater use a single layer of 15 lb. Vertical joints should lap a minimum of 4 inches and be offset by at least 6 feet in successive rows see figure 2 2 at left.

Drip edges on the eaves any valley liners and all flashing should be installed before the tar paper is laid. Island of hawaii island of oahu island of kauai islands of molokai and lanai island of maui. Comparing roof prices in hawaii is as easy as 1 2 3. Approved building codes state building code state electrical code state elevator code state energy conservation code updated 03 31 2017 state fire code state plumbing code state residential code wind topographic factor maps for use with the state building code.

Learn how to find the square feet of you roof. Modern building code requirements. For many years roofers used asphalt saturated felt under roofing shingles and it was historically available in two standard weights. Compare roof materials on our website 3.

The 15 pound was for lighter weight projects while the 30 offered more heavy duty protection. The engineering and design of our buildings improve over time as our knowledge increases. Overlap to be a minimum of 3 inches 76 mm. Determine what kind of roof you have 2.

Leakmaster roofing installs all these best selling materials. Asphalt saturated felt starting at the eaves and lapping upper courses over lower by a minimum of 2 inches. The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process. Before laying roof felt all rotten decking must be replaced.

Chalk lines should be snapped 33 5 8 above the eave line. The felt shall extend over the base flashing 2 inches 51 mm. Eave drip edges shall extend 1 2 inch 13 mm below sheathing and extend back on the roof a minimum of 2 inches 51 mm. Drip edge at eaves shall be permitted to be installed either over or under the underlayment.

Chimneys stucco or brick walls shall have a minimum of two plies of felt for a cap flashing consisting of a 4 inch wide 102 mm strip of felt set in plastic cement and extending 1 inch 25 mm above the first felt and a top coating of plastic cement. After this lines should be snapped every 34 as you move up the roof. The best weight for roofing felt is the 30 pound product because it provides thicker and stronger footing for.