The drip edge is nailed every 8 to 12 with 1 roofing nails, and the ends project 3/4 past the rake or gable end. Its not wise to attempt to reuse them, as they may cause problems on the new roof. The standard size for roofing felt paper is categorized into four. While it is common to find nails with a shank diameter of 13 inches, they cannot be smaller than 12 gauge (2.67mm) and still comply with the IBC. IKO assumes no responsibility for errors that may appear on this website. As a result, roof nails can last for over 50 years, and most last for more extended periods provided the building is still standing. A greater overlap provides more protection but may cause problems with spacing and fastening upper courses relative to sheathing seams. The overhang to the next strip should be 3/8 inch. This inarguably depends significantly on the type of nails used. Here is what a roof certification letter encompasses. On low slope roof decks between 2/12 and 4/12, the recommended overlap for roofing felt is a minimum of 19-inches. Construction stapler or plastic washer nails. For a 30lb felt, you should use T50 staples which generally have inch wide crowns and a length variation that include , , , and inches. The most common size is 3/8 inch diameter with a 1-1/2 or 2-inch length. For low slope roofs mark every 17 and snap a chalk line from gable to gable. 1 Use a sharp knife to trim that shingle to within about 18 in. Never mount the felt paper on wet sheathing. Divide the total footage by 100 to determine the number of "squares" in the roof. The main drawbacks are cost and the need to use capped fasteners. The added depth that roofing felt nails provide makes them slower to install. They are also less likely to leave behind unsightly marks on your top. Repeat until the roof is covered. So, choose these nails where performance, especially wind resistance, is a priority. The heavy-duty felt or paper is saturated or coated with bitumen. To calculate the appropriate roofing nail length, add the thickness of the shingles and underlayment to the thickness of the sheathing. Roofing felt underlayment before installation often corresponds with the local building codes and makes it easier to keep insects, vectors, and even dust particles away from the building. There are various roofing nails available in different materials. There are two ways to measure the size of a roofing nail diameter and length. These thick layers of roofing felt are installed by heating the back of the felt with a butane torch and then carefully applying it to the roof. Galvanized nails are also available in a variety of lengths and sizes. Both felt nails and staples are great fastening systems for roofing projects. That depends on the exposure and coverage of your shingles. Staples are faster but lack the holding power of nails. Staples also provide great finishing outlooks on your roofing or other building projects. I hope you found the guide informative and have a better understanding of how to install roofing underlayment. One IKO test found that ring shank nails have 300% more strength than smooth shank nails. Secure the shingles with the roofing nails. Perhaps they were underdriven in the first place. Roofing Nails Best Seller Grip-Rite #12 x 1 in. Felt nails are usually made from galvanized steel, which is corrosion-resistant. Your attic needs to breathe. First, its available capacity load, adjustable drive depth, and universal design make compatibility easy: the nails and the shingle. Trim the felt, so it is flush with the face of the drip edge. The seams between sheets use nails at 5cm spacing. Most building codes regulate that at least a 12 gauge shank with a diameter of 3/8 head be used. Ideally, your roof will not have any exposed nails, with the exception of the last cap shingle (and those nails should be covered in roofing cement.) There are three basic types of roofing nails: The shank of the nail is the part of the nail that punctures through the material you are nailing. Therefore, you have to plan out your sheathing thickness, shingle thickness and nail length carefully. Use the nails with or without plastic caps. Synthetic or non-bitumen underlay has become a popular choice with roofers over the past decade. The kind of nails youll use for your roofing felt will depend on the project youre working on. For steel, this means stainless steel or galvanized steel. FREE delivery Tue, Feb 21 on $25 of items . Professional Professional Tools & Support. Roofing felt is commonly used between roof deck sheathing and roof shingles. If the guide was helpful, please share it with others. It also doesnt wrinkle when wet or crack and split in the cold. For example, if you remove the nail and drive it back into the same spot, your aim wont be perfectly accurate. It takes 3 bundles to cover a square if you use 3-tab shingles, the most common type. 4. The most common shingle roofing nail size is 3/8 inch diameter with a 1-1/2 or 2-inch length. 45.25-in x 53.4-ft 200-sq ft Felt Roof Underlayment Model # XHWTP3224N-015 Find My Store for pricing and availability Installation & Services for You Look to Lowe's for a free consultation and professional installation. The first course or starter strip is a 19-inch width of felt, and the next course overlaps it fully. Another quality is its ability to withstand intense exposure to the sun over a long period. Arrow 1/4-Inch T50 Monel Rust Proof Staples, Building Code [IRC2018 Table R905.1.1(2)] requires two layers of underlayment for low-slope roof decks between 2/12 and 4/12, Local Codes may require it for slopes greater than 4/12, Many home and roof warranties require felt paper, NRCA (National Roofing Contractor Association) recommends bitumen, asphalt, tar, or synthetic felt for asphalt shingles, The NRCA recommends water-resistant underlayment for roof slopes greater than 3/12, Roofing felt helps to prevent pitch, uneven or sharp edges, and nails from damaging shingles, Some shingle warranties are void if felt isnt used, Necessary to meet Class A fire rating with some shingles, Provides additional protection to the roof decking against moisture penetration, When removing old shingles, fully remove and replace the old felt with new felt, Made of tar, asphalt, or bitumen-saturated organic or fiberglass substrate felt paper, Commonly used for slopes greater than 3/12, Water-resistant and breathable, not waterproof sheds moisture, doesnt trap it, 15-pound is lighter and thinner, and easier to damage; it has a permeability rating of 5, 30-pound is thicker and stiffer, and more resistant to damage; provides greater protection, Must overlap 19-inches or more on a low slope, 2/12 to 4/12, to form a double layer on the whole roof deck, On slopes greater than 4/12 the courses of felt should overlap at least 2-inches, Commonly fastens with staples or in high wind areas with plastic capped nails or plastic wind-strips, Compounds leach out over time and with sustained exposure to heat it becomes more absorbent, Manufactured from polyethylene or polypropylene, plus fiberglass in an asphalt-saturated base layer, Equivalent to felt but withstands higher temperatures, Lighter and stronger than felt, wrinkle-free, and may have a non-skid coating that is slip-resistant even when wet, Resistant to moisture, mildew and fungal growth, and UV damage, Can be left weather-exposed for 6-months or more, Overlap depends on the slope and manufacturers instructions, Fastens to deck with roofing nails or plastic cap nails staples arent recommended, May void warranties for some asphalt shingles, Polyester or polyethylene layer bonded to a weather-resistant non-skid upper layer, May have a moisture-resistant polymer film and/or a mineral coating melded to the upper layer, Typically self-adhering with a peel-off membrane protecting the adhesive side, Rubber-like material will self-seal around nails and staples, making it waterproof, Very flexible for irregular surfaces and different temperature extremes, May be designed to resist high-temperatures up to 250F, May be fiberglass-reinforced or polymer-modified for strength and elasticity, May have a selvedge edge or sticky strip along the upper edge to form a stronger watertight seal with the overlapping upper course, Typically more expensive than other underlay treatments. Divided by 432 for 15-pound felt or 216 for 30-pound felt and round up for full rolls for this roof theyll be lots of leftover from one roll for the next project. For slopes greater than 4/12 a single layer of felt is acceptable. Nails can pop above the roof surface for a number of reasons. Not felt to timber. Mark every 34 or 33 and snap a line across the deck for 2 or 3 overlaps on slopes greater than 4/12. Similarly, 19/32 OSB roof sheathing would be 8d common, box or casing nails at 6 on center at the panel edges and 12 on center in the field OR 2 16 gage staples at 4 on center at the panel edges and 8 on center in the field. When preparing to shingle or reshingle a roof, laying roofing felt offers an extra barrier against moisture. To determine how much felt is required for a roof, find the area of the roof deck to be covered. Nails and staples are standard roofing underlayment options that you can use on all building products. 19. Roofing nails that are 11- or 10-gauge are also allowed by most building codes as they are thicker and sturdier. For example, you will need a roofing air nailer for felt nails and a roofing staple gun for staples. The average 3-tab shingle needs four nails per shingle. Plus, they may have been otherwise damaged. of the face of the lower-course shingle on the other side of the corner. Drip edges on the eaves, any valley liners and all flashing should be installed before the tar paper is laid. The length of nail you use depends on the thickness of the sheathing and shingles you use. It sheds precipitation while awaiting shingles, protects the shingles from resins and glues leaching from the decking, and acts as a second line of defense against moisture. Surface treatment: polish, electro galvanized, hot dipped galvanized or vinyl coated. A nail gun can be used to quickly install some nails to the roofing paper wont slide around. Whichever material you choose for your nails, remember that roofing nails are on the exterior of homes and therefore the outer surface needs to be corrosion-resistant. Most roofers use four nails per shingle and five nails for each roofing felt square. You should use 12-gauge or thicker. Besides, the type of underlayment used for roofing material is not much to bother because they are held mainly by many layers of shingles that weigh higher above the roofing felt underlayment itself. Metal Mesh in Drywall: All You Need To Know, Does Drywall Tape Need To Be Completely Covered? Overlap the end of a roll about 4 inches with the start of a new roll and fasten both pieces to the decking. Is it necessary to use adhesive? The manufacturing process of felt nails is more complex than staples. But at the same time, you have a lot of jams on the felt paper while working with nail guns, roofers who use staples any form of jam. Even though nails also hold roofing materials in place, staples are often preferred because they have a solid visible grip. Valley, ridges and hips should have a 6 inch overlap of paper. Though they vary greatly in material, size and type, all roofing nails share one helpful characteristic: a diamondshaped point. Nail shank diameter should be at least 11-12 gauge for roofs. However, most roofers prefer staples because they are less expensive, have outstanding holding power, and enable roofers to work faster by covering an extensive space with their compact collection. Since retiring he has written freelance stories and a weekly computer security column. Choosing the suitable fastener for your roof or shingle is dependent on four factors; the type of fastener, correct installation, placement, and holding strength. In normal wind zones the nails should be driven at 6.0 O.C. If there are hips, valleys, or dormers, increase the total by 10 to 25%. 1 (19) 240 (1) 250 . Roofing felt nails like cap nails are generally more expensive than staples. Roofing nails with gaskets are intended for metal roofs. Make sure the nails are embedded securely into the felt and wood sheathing. Underlayment, also known as roofing felt or tar paper, is a layer of protection that roofers install between your roofing deck and the roofing shingles or tiles. Roof nails are available in 12-, 11- and 10-gauge. Installing roofing felt is easy to install and is the first step to protecting your roof decking and home. Pack Size. Limited time deal. Also note that nails are sold by the pound, and if youre a professional roofer, it may benefit you to buy in bulk in order to reduce costs. They can also be unsightly if they rust or break over time. 3. Use stainless steel to T50 staples or 12-gauge shank 7/8 to 1-1/2 hot-dipped galvanized or aluminum roofing nails with a 3/8 head diameter. Overlaps will typically be minimum 50mm and will depend upon the slope of the roof. Roofing nails are available in lengths ranging from one to two inches. When installing thicker shingles, you may need to use a longer nail in order to penetrate the OSB beneath fully. The first course commonly extends past the lower edge of the sheathing by 1/2 or to cover the drip edge. Wood splinters should also be pulled out for a smooth, clean decking surface. They are widely used and have been recognized as effective methods of holding roofing felt or underlayments and can be used for several small-scale buildings or larger building projects. In addition, the manufacturer's instructions should indicate which side of the roofing felt goes down if that matters for the specific product. Check the requirements for the roofing material that will go over the felt. As its many names suggest, this type of nail has rings along the shank. Installing a roof is much more than just nailing shingles onto some boards. Overlapping sheet, shed felt adhesive sticks, felt to felt. Repeat until the roof is covered. Conclusion Roll the first large piece of felt over one side of the roof, allowing the excess to overhang. 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. Bob Haring has been a news writer and editor for more than 50 years, mostly with the Associated Press and then as executive editor of the Tulsa, Okla. For budget-conscious homeowners, roofing staples are the more affordable option. The most common include galvanized roofing nails and aluminum roofing nails, but you can also find copper and stainless steel roofing nails. Roofing felt products should not be glued to the decking in lieu of using nails or screws. Rolls of felt are typically 36 wide, and low slopes require 19 overlaps. On the rakes or gable ends, the drip edge goes on top of the felt, helping to seal the end and prevent moisture penetration under the shingles. The ridge cap used on this roof . Multiplied by 1.10 is 2112sqft. In addition to these, nail felts are made from steel and used only to secure the roofing felt underlayment. Used for fastening roofing felt for waterproofing or roofing tiles to metal. A larger-size head might increase the risk of exposing part of the nail head in standard nailing locations on the shingle. Ask your dealer for the correct amount of nails for your size roof, in the length you specify. (Follow Correct Way), What Does A Roof Certification Cover?