what size nails for roof felt

Drip edges on the eaves, any valley liners and all flashing should be installed before the tar paper is laid. If you are not sure what size of nails to use for your project, you can always consult the building department in . 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. However, due to manufacturing variances, the limitations of your monitor resolution and the variation in natural exterior lighting, actual colors may vary from the images you see. They cost less per square foot to install than nails, making them a good choice for those working with limited funds. Mold and mildew will result and you could wind up having to rip off the roof and install a new one. Sometimes homeowners put in new nails when trying to attach something on the roof. 1 Use a sharp knife to trim that shingle to within about 18 in. In addition, staples create a neater finished look. As a result, roof nails can last for over 50 years, and most last for more extended periods provided the building is still standing. Roofing felt isnt designed to be left exposed to the elements. 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. This should be laid before the first felt is applied. 30-pound roofing felt costs more, but also offers more protection. Unlike selfadhering underlayments, such as ice and water protector, felt underlayment needs to be fastened in place with nails. Nail metal drip-edge flashing, which bends over the roof and down the edge of the facing board, on all roof edges. They have a square-shaped head, instead of the more typical circular head you see on other nails. Before applying roofing, you'll need to cover the sheathing with roofing felt, also often called "tar paper." Most local codes call for using 30-pound felt. . Roofers tend to use the roofing nails they already have on hand to install flashing. Many manufacturers offer 10-year guarantees for felt. They are also available in both hand-drive and pneumatic versions. Felt is typically 3 feet wide, so that means a roll is approximately 144 feet long. Today, the penny system refers specifically to nail length. The answer depends on the thickness of the plywood and the building code. At the gable ends trim flush to the decking or leave 1/2 to 1 to wrap the edge when installing the drip edge. You can get away with using regular nails if working on a smaller project, such as repairing a leaky roof. Nails and staples have several significant differences. So for the 24 square roof example, you would need 2.4 rolls of synthetic underlayment, or 6 rolls of regular #15 felt. The standard size for roofing felt paper is categorized into four. If youre unsure how to install roofing felt or are just looking for some pointers, this guide is all you need. Roofing felt products should not be glued to the decking in lieu of using nails or screws. That being said, you can expect a small, 5-pound box of smooth shank galvanized steel roofing nails to cost around $10. By Maria Goudiss. The drip edge protects the edges of the roof deck and is often installed after the underlay is attached. If you have any further unanswered questions or want to know more about the best roofing nails for your project, don't hesitate to get in touch. Highly visible alignment lines. At intermediate supports, fasten panels 12 inches on center. When nailing shingles, proper penetration into the roof deck is essential to ensure the nail and shingle remain secure. 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. Follow manufacturers instructions when choosing nails. It is important to note that local building and fire codes may require cap nails instead of staples, so check the fine print. Taking the time to properly prepare the sheathing will make all the difference in how quickly and easily the felt paper is installed. Uneven strips and wrinkles can allow dust, moisture and mold to develop. 4.6 out of 5 stars 94. This is because the moisture can cause the staples to rust and break down faster. The sun makes the felt brittle and more susceptible to tearing, and rain causes it to ripple. As a bonus, roofing staplers are easy to handle and do not require many repairs. Ultimately, it is best to refer to your building codes and roofing manufacturer for more specific guidance. For most homeowners, aesthetics are essential when choosing a fastening system. Rolls of felt are 36 wide x 144 long for 15# and 72 long for 30#. Unfortunately, when it comes to asphalt shingle roofs, they fall short in having enough holding strength. In your building codes and international building codes, nails may be referenced as fasteners along with staples and screws. The roof decking should be completely clean and dry. (Must Read This), Pressure Treated Lumber For Roof Rafters (Lets See), Roof Sheathing Horizontal Or Vertical (Must Read). They are the most basic type of roofing nail and cheaper than the other two options. Typically 2 to 3 days will be required for this. Most roofers use four nails per shingle and five nails for each roofing felt square. To determine how much felt is required for a roof, find the area of the roof deck to be covered. The overhang to the next strip should be 3/8 inch. Nail metal drip-edge flashing, which bends over the roof and down the edge of the facing board, on all roof edges. Use galvanised clout nails to nail the first sheet of felt onto the roof. 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. Well explain how to install the roof felt and drip edge, and make some tool and material recommendations. Of course, as your nails will be on the exterior of a home, they must have rust and corrosion protection. This goes a long way to bring to light how durable nail roofs are. Measure the length from edge to edge and the eave to ridge, and multiply the values for the area of half the roof. Roofing nails should be 1-1/4 to 2 inches long to ensure that it sufficiently penetrates and embeds in the roof sheathing. When installing thicker shingles, you may need to use a longer nail in order to penetrate the OSB beneath fully. 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. Clout nails should be 15mm large head clout nails. Use a utility knife or hook-bladed knife to cut the felt. The RSRS designation indicates the fastener is a ring shank roof sheathing nail. They are also less likely to leave behind unsightly marks on your top. 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. 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. Therefore, you have to plan out your sheathing thickness, shingle thickness and nail length carefully. So in terms of quantity, a roofing roll is about the size of one composite . This makes them more likely to rust and break over time. It effortlessly discharges up to 1500 staples per single 1.5Ah battery charge and has a power adjustment for different materials. Tags The kind of nails youll use for your roofing felt will depend on the project youre working on. This website uses cookies to provide necessary functionality and to improve your online experience. Roofing and reroofing are two of the most common home improvement projects. This is because the staples are smaller and have a smaller head, which means they pierce the shingle less. Start at the lower gable edge of the roof deck and work upward. This article will explore the pros and cons of each technique to help you make an informed decision for your next roofing project. Measure the deck from the bottom to top for the number of courses of paper. They install it by tacking one end, rolling it out, and centering it on the ridge. How Long Are Roof Nails. Roofing nails that are 11- or 10-gauge are also allowed by most building codes as they are thicker and sturdier. Check the requirements for the roofing material that will go over the felt. They can also be unsightly if they rust or break over time. In fact, in some coast regions, the building codes require the entire nail to be corrosion-resistant, not just the outer surface. In addition, roof staples are affordable, easy to work with, and can be used for diverse building projects. Roofers seek to use just the right length of nail so that the decking (or OSB) is completely punctured by the nail. High wind areas and other types of shingles may need more. For steel, this means stainless steel or galvanized steel. 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. This makes it 320 nails per square foot. The most common include galvanized roofing nails and aluminum roofing nails, but you can also find copper and stainless steel roofing nails. Staples are used with a variety of roofing materials. Nail the felt in using 0.59 inch (15 mm) galvanized clout 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. As a result, they are less susceptible to jamming and easily reload. Point: diamond or blunt. This point is expertly designed to keep the decking intact when it punctures through. 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. The roofing felt should be applied in layers that overlap. The last part of the extended eaves edge flashing is folded back over the rake edge and nailed into place, thus sealing the exposed corner of the drip edge. What Size For Roofing Felt? For example, when using Cambridge shingles, youll use roughly 240 nails, because of their Advantage size. For example, if you remove the nail and drive it back into the same spot, your aim wont be perfectly accurate. Your area can also affect the number of nails needed for your roofing project. There are two methods of galvanizing nails: hotdipped and electrogalvanized. Product Specs Type: Synthetic Size: 250 feet long by 4 feet wide Fire rating: None. They arent connected, as they are with screws. Visit the officia. The puncture must be complete so that the whole diamond tip is past the wood. Specification Material: carbon steel, stainless steel, aluminum, copper. In normal wind zones the nails should be driven at 6.0 O.C. The most common size is 3/8 inch diameter with a 1-1/2 or 2-inch length. They may or not allow staple roofing felt. Pack Size. Factors such as type of fastener, accurate installation, placement, holding strength, and local building authority codes all influence why people choose nail or staple fastener for their roofing felt underlayment. The differences between the stable and nails are visible. This is because each nail needs to be driven individually into the roof. We'd recommend nailing from the centre of the edge of the sheet and working outwards. The steps are pretty much the same whether its a big roof or a small one. Simply put, smooth shank nails have a smooth shank. They can also be overdriven or even underdriven. 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. Fasten drip edge on eaves with galvanized nails and a hammer, about 12 inches apart, before laying roof felt. Conclusion Measure the width and height of each section separately. If youre installing by the High Wind Application, youll use two more nails a shingle, so 360 nails per square. To protect the rake or gable ends from wind-driven moisture, the drip edge is placed over the underlayment to seal it down to the deck. Eugene has been a DIY enthusiast for most of his life and loves being creative while inspiring creativity in others. Some roofing felts are actually glued down. Unroll the first course beginning at one gable edge and rolling to the opposite edge. One IKO test found that ring shank nails have 300% more strength than smooth shank nails. Square cap nails are typically used for fastening felt underlayment and not asphalt shingles. As a result, most local building authorities have banned staples for roofing. It is versatile, strong, and affordable. Measure the size of your roof in square feet. Nails should have a minimum, nominal shank diameter of 11- or 12-gauge, and a minimum head diameter of three-eighths of an inch. Galvanized nails are also available in a variety of lengths and sizes. When protected by well-maintained shingles, the underlay will last between 20 and 30-years, or as long as the asphalt shingles. 8D nails are considered standard for OSB roof sheathing materials. roofing company near me. In high-wind areas, more fasteners may be required. One of the essential factors is selecting a suitable fastener! Prevent Ice Dams Its not wise to attempt to reuse them, as they may cause problems on the new roof. Common nails, or even wood screws, may be acceptable nails for OSB roof sheathing. Remember to follow appropriate safety practices when working from ladders or on roofs. There are fewer requirements for these nails than those used to secure shingles. Starting at the eave, 36-inch-wide (914 mm) strips of underlayment felt shall be applied overlapping successive sheets 19 inches (483 mm) and fastened sufficiently in place. You dont need to use cap nails or another special type of nail for this purpose. felt application we use plastic cap nails with the Bostitch cap nailer. Not felt to timber. Roofing staples have a broad, flat head that helps to keep them in place and prevent them from pulling through the roofing material. 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. Where a roll ends and a new one is begun, the two rolls should be overlapped by four inches. Fit felt around vent pipes or other protrusions by cutting it with a utility knife and fastening around the bottom of the vent. Fasten drip edge on eaves. Add more felt if required Roll out the first course, tacking it down as you go. While all tar paper comes in rolls, you do have some control of what size roll you will purchase. What Type of Nails Should be Used with Shingles? 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. Felt provides a breathable, water-resistant membrane that helps shed moisture that makes it past the shingles. Haring holds a Bachelor of Journalism from the University of Missouri. An excerpt of Table R803.2.3.1 is shown below. Roofing nails are cleverly designed to help you do a better job. Installing roofing felt is the first step to shingling the roof deck and is an additional layer of protection for the roof. Due to these, Read More Plywood Under Deck Boards! The overhang to the next strip should be 3/8 inch. Copper nails are most often used on roofs with copper flashing and accessories. Roof felt is available in weights of 15 or 30-pounds per 100sqft. This is a fabric impregnated with asphalt to form a moisture barrier. The length of nail you use depends on the thickness of the sheathing and shingles you use. Roofing felt nails or staples are effective roofing methods or options that can go well with very soft materials. This is because nails create a stronger bond than staples, making the roof more resistant to high winds and other severe weather conditions. 1. Under most building codes in North America, 12-gauge is the minimum thickness of nail allowed on a roof. 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. First, its available capacity load, adjustable drive depth, and universal design make compatibility easy: the nails and the shingle. The most pronounced advantage of the staple over the nail is that roofing staple guns can install four staples at once while nail guns can not. Rolled roofing is easy to obtain and can be found at all home improvement stores. That is why they are used for additional water tightness in extensive wind areas to reduce the chances of wearing and tearing. We have the following; 3/8 x "3/8 7/16 x 1 - 1/2 1/2 x 5/16 1 x 5/8 For galvanized roofing shingles, they make use of a 16 gauge shank. In terms of durability, felt nails are more durable than staples. It has a heavy-duty, anti-jam stapling mechanism and magazine that loads from the bottom of the handle. Nails can pop above the roof surface for a number of reasons. This can be done prior to tacking or afterward. You can learn more about the sizes of staples here. Such factors include the nail spacing requirements of the total area of your roof and the slope or grade of your roof. Felt nails are usually made from galvanized steel, which is corrosion-resistant. You want roofing nails with plastic washers for roof underlayment. Roofing staples are a fastener to secure roofing felt or tar paper to the roof deck. In addition to these, nail felts are made from steel and used only to secure the roofing felt underlayment. Ideally, the roof should be done when there is a forecast for several days without a lot of rain. Start at the bottom of the roofline and work up so any water that gets through the roofing material will shed down the tar paper and will not go under it. Never mount the felt paper on wet sheathing. Before securing the end of a row, take time to walk the row, smoothing out any rough spots and matching up the snapped chalk lines. Roof Felt. 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. The most distinguishing feature of a roofing nail that sets it apart from other types of nails is the size of its head. Unroll the start of the first course, align with the edges and chalk line, and tack down the gable edge. Lay it over metal flashing edges around vents and pipes. Felt nails are less visible than staples. The quality of the material used is also an important consideration. For example, you will need a roofing air nailer for felt nails and a roofing staple gun for staples. Each run of shed felt should overlap the next by at least 7.5cm. Heavyweight asphalt shingles commonly have a longer service life. The International Residential Building Code (IRC) states two layers of felt for slopes between 2/12 and 4/12. An 8d nail, for example, cost 8 pennies for 100. By using this website you accept our use of cookies and the. This inarguably depends significantly on the type of nails used. Defer putting drip edge on angled gable ends until after the felt is laid, so the metal edge will block wind from lifting the felt. This way, you can avoid making multiple trips to the store for more supplies. A staple gun is convenient because it is less bulky and can shoot a lot of staples in a short period. Even though nails also hold roofing materials in place, staples are often preferred because they have a solid visible grip. It also doesnt wrinkle when wet or crack and split in the cold. (on center) on both head and end laps. Roof nails go deep into the roofing shingles and the roof decking, providing a firmer grip and preventing the asphalt from sliding around. Before laying roof felt, all rotten decking must be replaced. On the other hand, staples are larger and more visible. The roofing nailers are designed for driving 12-gauge nails up to a depth of 1 inch whereas the framing nailer shoots large 16d nails to a depth of 3 inches. Trim the felt, so it is flush with the face of the drip edge. Sheradised Square Twist Nails are invalueable when working with timber construction. The ridge cap used on this roof . Head diameter According to the IBC, the minimum head diameter for a roofing nail that's in compliance with IBC guidelines is 9.5mm. removing the shingle and installing a new shingle, choosing between a nail gun and a roofing hammer. What Size Roofing Nail Should I Use. Use the nails with or without plastic caps. Table R803.2.3.1 specifies the maximum fastener spacing based on framing specific gravity, exposure category, and wind speed. The penny system is an old way of classifying nails. When you get to an end shingle in a course, nail it in place so its edge overhangs the corner. Synthetic Roofing Felt, do not use nails or staples without caps. To install roofing felt, you need nails that have very wide heads to keep the felt . For larger projects, youll need to use bigger nails so that they can better support the weight of the roofing felt. Nails will also be required for any roofing project. Most building codes regulate that at least a 12 gauge shank with a diameter of 3/8 head be used. Roofing felt on high-traffic roofs, for example, must be able to stand up to a lot of wear and tear. However, in recent years, like in the last two decades, staples have been banned as an option for roofing and shingles because of fear of an incorrect installation. You may be tempted to reuse these to save on costs. Using roofing nails and roofing staples are common methods. Square cap nails may have a smooth or coiled shank. Tack the next course or layer into place. "World." Exposed nails are those with visible nail heads. For nail spacing requirements, an online calculator will give you a breakdown of the minimum nails per square footage that is required for your roof. Design depends on type of metal roof: exposed or hidden fasteners; board and batten (pan and ridge) panels; shake and shingle panels; panel or tile system; standing seam; etc.

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