For example, when using Cambridge shingles, youll use roughly 240 nails, because of their Advantage size. Nevertheless, it is essential always to consult the products to see if the producers have a laid-down procedure of which of the two roofing options are best for their products and how you should use them. Though they vary greatly in material, size and type, all roofing nails share one helpful characteristic: a diamondshaped point. Uneven strips and wrinkles can allow dust, moisture and mold to develop. Have a helper ready to assist with this step, and take care to get the lines straight and clean. Install the drip edge to the eaves (the lower edge of the roof) prior to rolling out the felt, or slide it under the felt underlay and over the fascia. NOTE: Not all products featured will be available in your area. As always, your comments and suggestions are appreciated. This is because the nails are made of a stronger material that can withstand more wear and tear. Pull the felt tight so that it lies flat and straight. Roofing staples have a broad, flat head that helps to keep them in place and prevent them from pulling through the roofing material. Synthetic or non-bitumen underlay has become a popular choice with roofers over the past decade. The overlap of 3/8 should be followed consistently for a smooth look once the shingles are installed. This provides short-term protection and serves as a waterproof so that water or moisture does not move below the tiles or shingles. Installing roofing felt is easy to install and is the first step to protecting your roof decking and home. Roofing nails that are 11- or 10-gauge are also allowed by most building codes as they are thicker and sturdier. By Maria Goudiss. The number of nails youll need for your roofing felt will depend on a few factors. Well explain how to install the roof felt and drip edge, and make some tool and material recommendations. If youre installing by the High Wind Application, youll use two more nails a shingle, so 360 nails per square. Therefore, you have to plan out your sheathing thickness, shingle thickness and nail length carefully. 19. When installing thicker shingles, you may need to use a longer nail in order to penetrate the OSB beneath fully. . 4. Tack or fasten roofing felt using stainless steel to T50 staples or 7/8 to 1-1/2 hot-dipped galvanized or aluminum 12-gauge shank roofing nails with a 3/8 head diameter. That is why they are used for additional water tightness in extensive wind areas to reduce the chances of wearing and tearing. In terms of the installation, there is not much difference between the two fastening systems. In normal wind zones the nails should be driven at 6.0 O.C. All nails and staples should be placed on the lower half of the paper. However, you may need more (480 nails per square) if you live in an area with severe weather conditions to ensure that your roof can withstand the high winds and heavy rain or snow. Divide by 432 or 216 depending on the weight of felt for 4.89 rolls of #15 or 9.78 rolls of #30 felt. Roof felt is available in weights of 15 or 30-pounds per 100sqft. The lower the gauge number, the thicker the nail. Roof slopes from two units vertical in 12 units horizontal (17-percent slope) and . It is represented by the letter d. Here is a handy chart to help you find the right size of roofing nails if they are only listed in penny length. So, choose these nails where performance, especially wind resistance, is a priority. Roof Felt. 30-pound roofing felt costs more, but also offers more protection. About Us | Contact Us | Privacy Policy | Home. The two main types are roofing felt 15 and 30. The sooner it is protected by shingles, the better. Therefore, settling to use any of your options depends mainly on the slope of the roof of the building they are being installed on. Roofing nails are the most common type of fastener used to attach asphalt shingles to the roof deck. A greater overlap provides more protection but may cause problems with spacing and fastening upper courses relative to sheathing seams. I will also need to overlap the felt, how much overlap should I use? By using this website you accept our use of cookies and the. However, you may need to replace staples more often than felt nails. They arent connected, as they are with screws. Aug 15, 2010. Felt nails are less visible than staples. ONLY USE 1 diameter plastic cap roofing nails. Nail guns are pretty easy to use as there is no risk of an incorrect installation even if the gun is not held in the correct position. In addition, staples create a neater finished look. Place your nails in a plastic cap or one with nails. Note the differences in the specification and length of the fasteners as well as the nail/staple patterns. Professional roofers look for the correct length because they want the nails to puncture the decking entirely. Check the requirements for the roofing material that will go over the felt. There are various roofing nails available in different materials. Replace any damaged decking and sweep the deck clean of sawdust and debris. For asphalt roofing shingles, use galvanized nails. Your attic needs to breathe. Fasteners should be long enough to penetrate at least 3/4" (19 mm) into wood decks or just . Use four roofing nails per shingle, as indicated on package instructions (six nails in high-wind areas). If the guide was helpful, please share it with others. Cap nail shank shall have a length sufficient to penetrate through the roof sheathing or not less than 3/4 inch into the roof sheathing. 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. Various nail shank types for different requirements. Give it the essential venting. What Size Staples Required for 30lb Felt? The manufacturing process of felt nails is more complex than staples. Nails for roofing felt are also more expensive than typical nails. Start the roof felt at one bottom corner of the roof. The first course commonly extends past the lower edge of the sheathing by 1/2 or to cover the drip edge. If you were considering using screws for their extra security, consider ring shank nails instead. The angled corner should be flush to the facia while the outer edge of the kick-out stands out between 1/4 and 1/2 to keep runoff away from the structure and into the gutter. Synthetic Roofing Felt, do not use nails or staples without caps. Multiplied by 1.10 is 2112sqft. 2. There are applications where felt is necessary and others where it is not. This can cause your roofing material to lift, making it more susceptible to damage in a storm. 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. Nail shank diameter should be at least 11-12 gauge for roofs. Shed Roof vs. Gable Roof Comparison Guide. A roof felt is a moisture barrier made of natural and synthetic materials. For a 30lb felt, you should use T50 staples which generally have inch wide crowns and a length variation that include , , , and inches. Roofing and reroofing are two of the most common home improvement projects. They may or not allow staple roofing felt. Tack the next course or layer into place. Package They are called 8d common nails or 8-penny nails and can be round-headed, sharp-pointed 11-gauge galvanized steel or the equivalent corrosion-resistant roofing nails. Of course, if you find yourself overwhelmed by the planning, preparation, or execution, you can reach out to professionals in your area. Thats a bad idea. Cap nails or nails with a 3/8-inch head are also a good choice for roofing felt, as theyre less likely to come loose over time. Measure the length from edge to edge and the eave to ridge, and multiply the values for the area of half the roof. If you are not sure what size of nails to use for your project, you can always consult the building department in . Common nails, or even wood screws, may be acceptable nails for OSB roof sheathing. In this guide well discuss what roofing felt is, why it is necessary, and the different types of underlayment. Nails and staples are standard roofing underlayment options that you can use on all building products. 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. For slopes between 2/12 and 4/12, double the resulting area value and then divide by the area a roll of felt covers. For best performance, you should use ring roofing nails that are made of hotdipped galvanized steel. $7.18 $ 7. For example, you will need a roofing air nailer for felt nails and a roofing staple gun for staples. For irregularly shaped roofs, break it down into smaller rectangles or triangles to calculate the areas. At intermediate supports, fasten panels 12 inches on center. Staples can be used for tacking it down, but not recommended to hold. Fasteners should be about 8 apart in the bottom 3/4 of the paper. The caps help prevent tearing and are helpful for keeping the felt in place if it is windy, or if there will be a delay laying the shingles. Steel makes for strong nails. Pack Size. The most common include galvanized roofing nails and aluminum roofing nails, but you can also find copper and stainless steel roofing nails. Fasten panels with a minimum of 8d Common (0.131-inch by 2-1/2-inch) nails spaced a maximum of 6 inches on center at supported panel ends and edges. Roofing nail lengths are available in one to two inches. The roofing nails outweigh the roofing staples durability, holding power, installation, extended use, and compliance with local building authority codes. For all Owens Corning shingles, roofing nails should penetrate into the wood deck by a . Successive courses repeat the 19-inch overlap. Leave about 5cm between each nail, and ensure the sheet is pulled tight and sitting in line with the roof. When preparing to shingle or reshingle a roof, laying roofing felt offers an extra barrier against moisture. Materials used to make the natural and synthetic underlayment include; wood cellulose, polyester, and fiberglass. Here is what a roof certification letter encompasses. Use the nails with or without plastic caps. Staples are used with a variety of roofing materials. In addition, roof staples are affordable, easy to work with, and can be used for diverse building projects. What Size Roofing Nail Should I Use. The actual process of putting down the underlayment will be one of the fastest parts of the entire roofing process. Smooth application of the roofing paper will help you achieve a smooth installation of the shingles. They require high skills and concentration when used, and any mistake or inaccurate placement can cause severe damage to the entire roof. One of the most significant advantages of using a roofing nail is that it creates a stronger bond than a roofing staple on the roof decking. Strips should always lay flat. If you take the time to properly prepare the roof, then laying the felt will be easy. Any stray roof tacks, pieces of old felt, or general debris should be cleared off. Chalk lines should be snapped 33 5/8 above the eave line. It helps protect the sheathing and the shingles and commonly has parallel lines printed on it that make shingle placement easier. [4] 4. The gasket is rubber, not plastic. Consider other underlayment options as needed, such as rubber or tar products. Although roofing staples are designed to be strong, they are not as strong as nails. Most roofing installation processes include attaching roofing felt ( roofing underlayment or tar paper) to the roof deck as recommended by the National Roofing Contractors Association (NRCA). In terms of durability, felt nails are more durable than staples. Overlay a second layer of felt 2 to 3 inches and fasten it through the overlay so it secures the top of the felt underneath. Even if it is imperceptible to you, water will find it. As a result, they are less susceptible to jamming and easily reload. Sometimes homeowners put in new nails when trying to attach something on the roof. Continue along the roof to the other end and trim the felt flush at the end with a utility knife. If youre estimating the cost of your nails, its best to head into your supplier and compare their prices yourself, as costs vary by location too. There are fewer requirements for these nails than those used to secure shingles. in normal wind zones. Install the drip edge, so it projects past the ends of the eaves by about 3/4 at the gable or rake end. Repeat until the roof is covered. $3.19 $ 3. Some roofers prefer to attach felt underlayment with one-inch roofing nails ,or special nails with plastic washers, but most codes allow staples, which are easier to drive. Roofing felt is a type of underlayment that professionals install beneath a roofs shingles. Prevent Ice Dams Unlike selfadhering underlayments, such as ice and water protector, felt underlayment needs to be fastened in place with nails. Use a construction stapler or a hammer. Cost is an essential consideration for home improvement projects. However, the cost varies depending on the size and brand of the product. 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. The penny system is an old way of classifying nails. This goes a long way to bring to light how durable nail roofs are. Are you looking out for ways of preserving your roof rafters to enable them to stand the test of time? Two or more people are required to help roll out and straighten the paper during the process. You dont need to use cap nails or another special type of nail for this purpose. They are easy to install and are unique in their work and functions. 3. The overhang to the next strip should be 3/8 inch. Type 304 Stainless Steel Nails - These are the middle of the road and also only recommended for indoor use, as they are rust-resistant but not rust-proof. Fasten drip edge on eaves with galvanized nails and a hammer, about 12 inches apart, before laying roof felt. Cut the extended eaves drip edge flashing between the roof leg and vertical leg at a 45 or 90 angle to the rake edge. A 36x72 roll covers 216sqft, weighs about 32-pounds, and has printed lines at 2, 4 and 17 for easier placement of upper courses and shingles. Check the weather. You can get away with using regular nails if working on a smaller project, such as repairing a leaky roof. The head diameter is typically a standard 3/8-inch for all roofing nails. It effortlessly discharges up to 1500 staples per single 1.5Ah battery charge and has a power adjustment for different materials. 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. You may prefer to use copper roofing nails on a roof with other copper accents. Overlapping roofing felt protects the roof deck from seepage, wind-driven precipitation, and ice-dam back-up. However, aluminum nails are still used on asphalt shingle roofing by some roofers. The cost of your roofing nails will depend on a few factors, including material, type and length. It will protect the roof for about a month without shingles, provided it is fastened properly and it isnt too windy. All nails and staples should be placed on the lower half of the paper. F1667 RSRS-03 (2 " 0.131") nails or ASTM F1667 RSRS-04 (3" 0.120") nails. (on center) on both head and end laps. High wind areas and other types of shingles may need more. The lower edge will need to be trimmed to the drip edge. The drip edge protects the edges of the roof deck and is often installed after the underlay is attached. Below we will explore an in-depth analysis of the two fastening systems to help you select the right one for your needs. Roofers tend to use the roofing nails they already have on hand to install flashing. Most professional roofers use staples instead of nails when installing roof felt on larger roofs. Work up the roof to the peak and fold felt over the top, overlapping at least 3 inches and fasten it on both sides. Use with Dewalt DWTTH700 series, Stanley TRA700 series, or Arrow T-50 5/16, 3/8, or 1/2 staples. So, with rounding, youll need 10 rolls of 15 pound felt or 20 rolls of 30-pound felt. Nail metal drip-edge flashing, which bends over the roof and down the edge of the facing board, on all roof edges. Also, you can use an aluminum or copper nail, depending on your location. This article will explore the pros and cons of each technique to help you make an informed decision for your next roofing project. Type 316 Stainless Steel Nails - These are what you should be using on any new roof build involving an exterior wood product. Rolled roofing (or roll roofing)also known as MSRcomes in rolls of 100 square feet. 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. . Use galvanised clout nails to nail the first sheet of felt onto the roof. However, as roofing nails will usually be hidden by the shingles above them, steel nails dont detract from the look of the roof. Cut it at the opposite gable edge, and roll out and staple the next course with the desired overlap. Today, the penny system refers specifically to nail length. There are two ways to measure the size of a roofing nail diameter and length. You can learn more about the sizes of staples here. of the shingle tabs where the bottom edge of the tab meets the top of the cutout. . Roof nails are available in 12-, 11- and 10-gauge. Shank type: smooth, ring, screw. 320 nails will be needed to install a square of standard 3-tab shingles, assuming four nails per shingle and 80 shingles per square. If you are on a budget or are looking for a fastening system that is easier to install, staples may be the right choice. Multiply the width by the height for the square footage of each section, then add the . The next step is to cap the ridge. Another quality is its ability to withstand intense exposure to the sun over a long period. The head diameter is typically a standard 3/8-inch for all roofing nails. Fasten the field area in the middle of the roll a minimum of 24 O.C. Ask your dealer for the correct amount of nails for your size roof, in the length you specify. Follow manufacturers instructions when choosing nails. The variation in the lengths of the T50 staples entirely depends on the thickness of the felt and the density of the wood beneath it. When nailing shingles, proper penetration into the roof deck is essential to ensure the nail and shingle remain secure. The average roll of 15-pound roofing felt covers about 400 ft2, or 4 squares, while the average roll of 30-pound roofing felt covers about 200 ft2, or 2 squares. On the other hand, Roof nails have a more substantial and extended holding strength. Use the nails with or without plastic caps. Galvanized nails are also available in a variety of lengths and sizes. In addition, nails are stable and allow roofers to get precise points when using them. Step 4 Prepare for the Shingle Installation The longer it is left uncovered, the more it will weather and fade. 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. Nail down squarely (90 degrees) into the deck to secure caps flush to the underlayment. Eugene has been a DIY enthusiast for most of his life and loves being creative while inspiring creativity in others. If you use the same shingle and add the nail back in a different spot, youre leaving behind a hole where the nail once was. The first course or starter strip is a 19-inch width of felt, and the next course overlaps it fully. Secure the shingles with the roofing nails. Nails that didnt fully penetrate the sheathing may work their way up over time. Its not wise to attempt to reuse them, as they may cause problems on the new roof. Roofing Nails Best Seller Grip-Rite #12 x 1 in. With that said, lets explore your roofing nail options and which is best for your next roof. As a result, most local building authorities have banned staples for roofing. Nails will also be required for any roofing project.
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