Roofing Felt Requirements In Hawaii

Drip edges on the eaves any valley liners and all flashing should be installed before the tar paper is laid.

Roofing felt requirements in hawaii.

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. Asphalt saturated heavy duty roofing felt is available in 15 and 30 pound weights. Determine what kind of roof you have 2. For many years roofers used asphalt saturated felt under roofing shingles and it was historically available in two standard weights.

Drip edge at eaves shall be permitted to be installed either over or under the underlayment. On roofs with a slope of 4 12 or greater use a single layer of 15 lb. After this lines should be snapped every 34 as you move up the roof. The engineering and design of our buildings improve over time as our knowledge increases.

Island of hawaii island of oahu island of kauai islands of molokai and lanai island of maui. The 15 pound was for lighter weight projects while the 30 offered more heavy duty protection. 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. Modern building code requirements.

The best weight for roofing felt is the 30 pound product because it provides thicker and stronger footing for. 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. And have made a series of short videos to show the pros and cons of each type of material.

Provide drip edge at eaves and gables of shingle roofs. Chalk lines should be snapped 33 5 8 above the eave line. Comparing roof prices in hawaii is as easy as 1 2 3. Compare roof materials on our website 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. 15 pounds per hundred square feet and 30 pounds per hundred square feet. 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.

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. Before laying roof felt all rotten decking must be replaced. Overlap to be a minimum of 3 inches 76 mm.