Roof Underlayment Requirements & Recommendations - is roofing felt The numbers refer to the actual weight of the felt. Use the nails with or without plastic caps. Heavier roll weight. Determine the bundles of shingles needed to cover the roof. Felt nails have a higher holding power compared to staples. For slopes greater than 4/12 a single layer of felt is acceptable. Though they vary greatly in material, size and type, all roofing nails share one helpful characteristic: a diamondshaped point. Proper roofing practices call for a plywood roof deck at least one inch thick, 3/4-inch galvanized nails, and 3/8-inch head nails. Leave about 5cm between each nail, and ensure the sheet is pulled tight and sitting in line with the roof. What size nails for OSB sheathing? Recently, things have changed as staples are no longer fancied or used as roofing felt underlayment. (Must Read This). If youre using typical architectural shingles and 3/8-inch-thick sheathing, youll need 1inch nails. Nails and staples are standard roofing underlayment options that you can use on all building products. A larger-size head might increase the risk of exposing part of the nail head in standard nailing locations on the shingle. Place your nails in a plastic cap or one with nails. . Roof Felt - Roofing - Building Materials | Wickes Rolls of felt are typically 36 wide, and low slopes require 19 overlaps. The main drawbacks are cost and the need to use capped fasteners. Plywood Under Deck Boards! Head diameter According to the IBC, the minimum head diameter for a roofing nail that's in compliance with IBC guidelines is 9.5mm. This is essential in windy conditions or in areas that experience severe weather conditions. Step-by-Step Ridge Vent Installation Instructions - Fine Homebuilding Also, when installing ridge and hip shingles, youll need nails that are about a half an inch longer, as they need to penetrate more shingle layers. By using this website you accept our use of cookies and the. Depending on your local building authority, you can use staples for roofing felt or, in other words, as roofing felt underlayment. The roof decking should be completely clean and dry. The rise is the height from the edge of your roof to the peak, while the run is the distance from the eaves to the peak. IKO manufactures products for specific areas in North America. Although roofing staples are designed to be strong, they are not as strong as nails. Not felt to timber. Shank diameter. In this guide well discuss what roofing felt is, why it is necessary, and the different types of underlayment. This will help keep any moisture from getting under the felt. Florida Building Code, 6th Edition SHINGLE ROOFING - Bay County, Florida
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