By Maria Goudiss. 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. This means that using a staple to nails is four staples to 1 nail. Nail every 8 to 12 and approximately 1-1/2 in from the outer edge. Within the last foot or so, roll back onto the course and push the course down at the edge to create a crease, and cut it with a utility knife or hook knife. You can learn more about the sizes of staples here. . Nails and staples have several significant differences. Roofing nails are available in lengths ranging from one to two inches. Unroll the felt on the roof deck or ground, measure the width, and cut. Choosing the suitable fastener for your roof or shingle is dependent on four factors; the type of fastener, correct installation, placement, and holding strength. 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. 2004-2023 IKO Industries Ltd., IKO Industries, Inc., and their affiliated and related entities. Here is what a roof certification letter encompasses. The longer it is left uncovered, the more it will weather and fade. If your building codes require thicker sheathing, youll need 1 -inch nails. You need #buttoncapnails in order to nail down your roofing underlayment on your roofing project whether it's tar paper or or even peel in stick in some area. 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. (Must Read This), Pressure Treated Lumber For Roof Rafters (Lets See), Roof Sheathing Horizontal Or Vertical (Must Read). Perhaps they were underdriven in the first place. We'd recommend nailing from the centre of the edge of the sheet and working outwards. IKO manufactures products for specific areas in North America. Roofing Felt that exceeds the scuffed area by 6" (152 mm) Make sure the nails are embedded securely into the felt and wood sheathing. Used for fastening roofing felt for waterproofing or roofing tiles to metal. The M12 also has a functional belt clip which makes it easy to stow and free up your hands. 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. 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. All nails and staples should be placed on the lower half of the paper. However, the cost varies depending on the size and brand of the product. What Size Staples Required for 30lb Felt? of the shingle tabs where the bottom edge of the tab meets the top of the cutout. Check the requirements for the roofing material that will go over the felt. This can cause your roofing material to lift, making it more susceptible to damage in a storm. Installing roofing felt is easy to install and is the first step to protecting your roof decking and home. This is because the nails are small and blend in with the paper backing of the roll. 18 ($1.06/Sq Ft) $11.99 $11.99. Your attic needs to breathe. The steps are pretty much the same whether its a big roof or a small one. Shank diameter. However, both fastening systems are durable and will last for many years with proper care and maintenance. For steel, this means stainless steel or galvanized steel. Bitumen is a waterproof mixture of coal-tar pitch or asphalt and other viscous and sticky organic liquids. This is a fabric impregnated with asphalt to form a moisture barrier. Use the nails with or without plastic caps. Where a roll ends and a new one is begun, the two rolls should be overlapped by four inches. Consider other underlayment options as needed, such as rubber or tar products. The synthetic underlay has greater water-resistance and the no-slip coating offers better traction for installation safety. The drip edge protects the edges of the roof deck and is often installed after the underlay is attached. Nail the felt in using 0.59 inch (15 mm) galvanized clout nails. If you live in an area with high humidity, you may need to replace your staples more often. Are you looking out for ways of preserving your roof rafters to enable them to stand the test of time? Step 4 Prepare for the Shingle Installation What size nails for OSB sheathing? 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. The rolls are typically either 50 or 100 feet long. Read More What Does A Roof Certification Cover? After unrolling the first 5 to 10 or so, tack the gable edge and centerline of the paper once its aligned with the chalk line. The weight or thickness needed will vary by regions, but 15-pound suffices in most locales. I will also need to overlap the felt, how much overlap should I use? These applications are ideal for flat roofs or protective surfaces under roof-level decks. Tar paper is infused with tar, and roofing felt with a bituminous substance granted, a semantic difference as both are petroleum-based products. Continue along the roof to the other end and trim the felt flush at the end with a utility knife. Of course, as your nails will be on the exterior of a home, they must have rust and corrosion protection. The actual process of putting down the underlayment will be one of the fastest parts of the entire roofing process. A staple gun is convenient because it is less bulky and can shoot a lot of staples in a short period. The downside of roof nails is that they are bulkier and prone to multiple jams while working with them. Roll out the first course, tacking it down as you go. However, the size differs depending on the application and the local building codes. Ridges, hips, and valleys should overlap at least 6-inches beyond the centerline, and there should be a similar overlap below vent pipes and utility stacks. Various nail shank types for different requirements. Installing roofing felt is the first step to shingling the roof deck and is an additional layer of protection for the roof. Be sure you to use the correct nail length and place it properly. It must be covered with waterproofing membrane, usually "roof felt," also called tar paper. Table R803.2.3.1 specifies the maximum fastener spacing based on framing specific gravity, exposure category, and wind speed. Prevent Ice Dams On the other hand, staples are larger and more visible. Check the weather. We have the following; For galvanized roofing shingles, they make use of a 16 gauge shank. When nailing shingles, proper penetration into the roof deck is essential to ensure the nail and shingle remain secure. The overhang to the next strip should be 3/8 inch. 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. They are waterproof or water-resistant and provide additional protection and a barrier against moisture penetration. The layers of felt should be overlapped by 1 inch as you work toward the roof ridge. Pack Size. Its not wise to attempt to reuse them, as they may cause problems on the new roof. Work up the roof to the peak and fold felt over the top, overlapping at least 3 inches and fasten it on both sides. Some suggest you fill this hole with roofing cement, but this repair option must be done carefully to maintain the roofs water-shedding performance. The Hillman Group 42041 Galvanized Roofing Nails, 1-Inch, 100-Pack. Roofing felt isnt designed to be left exposed to the elements. Cost is an essential consideration for home improvement projects. In addition, the manufacturer's instructions should indicate which side of the roofing felt goes down if that matters for the specific product. Taking the time to properly prepare the sheathing will make all the difference in how quickly and easily the felt paper is installed. Nail shank diameter should be at least 11-12 gauge for roofs. Roofing felt is a type of underlayment that professionals install beneath a roofs shingles. The answer depends on the thickness of the plywood and the building code. Tack about every 4 on gable edges and 8 or so everywhere else. After this, lines should be snapped every 34 as you move up the roof. 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). Every time there is a gust of wind, we rely on the nails weve chosen to hold new shingles in place. This can cause your roof to leak. The seams between sheets use nails at 5cm spacing. Even though nails also hold roofing materials in place, staples are often preferred because they have a solid visible grip. 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. $3.19 $ 3. If youre unsure how to install roofing felt or are just looking for some pointers, this guide is all you need. You should use 12-gauge or thicker. Successive courses repeat the 19-inch overlap. Most roofers use four nails per shingle and five nails for each roofing felt square. . 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. Synthetic underlayment comes in 10 square rolls, while regular #15 felt comes in 4 square rolls. If you were considering using screws for their extra security, consider ring shank nails instead. 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. To ensure complete satisfaction you should make final color selections from several full size shingles and view a sample of the product installed on a home. The roof leg has one to three ridges to slow moisture movement, the smooth vertical leg sheds water, and the kick-out pushes it away from the facia. Do not simply hammer the nail down, renail it in the same spot, or use the same shingle. Start at one of the upper corners of the felt and continue along the perimeter. The key difference between a roofing nailer and a framing nailer is the nail size. They are easy to install and are unique in their work and functions. All nails and staples should be placed on the lower half of the paper. They cost less per square foot to install than nails, making them a good choice for those working with limited funds. The roof leg goes under the underlayment and should be nailed every 8 to 12 along the deck with 1 aluminum or galvanized roofing nails. 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. Felt is typically 3 feet wide, so that means a roll is approximately 144 feet long. On shallow sloped roof, we would suggest the overlap is increased to 75mm. However, you may need to replace staples more often than felt nails. Most professional roofers use staples instead of nails when installing roof felt on larger roofs. 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. "World." (A Beginners Guide) Done. You should check with your building code and local bylaws to confirm. It has a heavy-duty, anti-jam stapling mechanism and magazine that loads from the bottom of the handle. 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. Local codes may have different requirements, and shingle manufacturer warranties often specify underlayment requirements, so check them out too. In this guide well discuss what roofing felt is, why it is necessary, and the different types of underlayment. Rolled Roofing Basics. Determine the bundles of shingles needed to cover the roof. This is because a roofing nail has high holding power, unlike its counterpart. However, this doesnt rule out staples entirely. 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 the lower . Nails that didnt fully penetrate the sheathing may work their way up over time. . Easier roll-out with less sticking. 320 nails will be needed to install a square of standard 3-tab shingles, assuming four nails per shingle and 80 shingles per square. That being said, you can expect a small, 5-pound box of smooth shank galvanized steel roofing nails to cost around $10. The overlap of 3/8 should be followed consistently for a smooth look once the shingles are installed. These have large plastic caps for heads, which help prevent water intrusion. Can Roofing Felt be Glued? If you need to install new roof decking or OSB, youll need to nail it to the roof truss. Below we will explore an in-depth analysis of the two fastening systems to help you select the right one for your needs. One MSR roofing roll is usually about 36 feet long by 36 inches wide. This article will explore the pros and cons of each technique to help you make an informed decision for your next roofing project. If you take the time to properly prepare the roof, then laying the felt will be easy. F1667 RSRS-03 (2 " 0.131") nails or ASTM F1667 RSRS-04 (3" 0.120") nails. Installing roof felt is a two-person job. However, as roofing nails will usually be hidden by the shingles above them, steel nails dont detract from the look of the roof. Align this layer with the bottom of the roof; snap a chalk line the length of the roof, spaced to the width of the felt roll, to aid in keeping layers straight. Fasten drip edge on eaves with galvanized nails and a hammer, about 12 inches apart, before laying roof felt. Galvanized nails are also available in a variety of lengths and sizes. Smooth application of the roofing paper will help you achieve a smooth installation of the shingles. 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. Use a construction stapler or a hammer. It is important to note that local building and fire codes may require cap nails instead of staples, so check the fine print. If youre installing by the High Wind Application, youll use two more nails a shingle, so 360 nails per square. For irregularly shaped roofs, break it down into smaller rectangles or triangles to calculate the areas. Clout nails should be 15mm large head clout nails. The quality of the material used is also an important consideration. Any stray roof tacks, pieces of old felt, or general debris should be cleared off. Another quality is its ability to withstand intense exposure to the sun over a long period. Have a helper ready to assist with this step, and take care to get the lines straight and clean. FREE delivery Tue, Feb 21 on $25 of items shipped by . Thus, you have to carefully plan the shingle and sheathing thickness and also the length of the nail. Roofing felt is made of natural or synthetic materials such as wood cellulose, recycled cloth, fiberglass, or polyester. While all tar paper comes in rolls, you do have some control of what size roll you will purchase. Roofing nails should be 1-1/4 to 2 inches long to ensure that it sufficiently penetrates and embeds in the roof sheathing. Roofers seek to use just the right length of nail so that the decking (or OSB) is completely punctured by the nail. Staples also have lower holding strength when compared to nails. Use the nails with or without plastic caps. (Explained), Uneven Transition Between Cement Board And Drywall, Drywall Anchor Keeps Breaking (Causes & Fixes). The T-50s are compatible with most brands of staple guns or hammers. 8D nails are considered standard for OSB roof sheathing materials. Secure the shingles with the roofing nails. For asphalt shingle nails, a galvanized roofing nail with at least 12 gauge shank and head diameter 3/8 inch, while the stapler requires a 16 gauge staple gun. Penetration. If you are not sure what size of nails to use for your project, you can always consult the building department in . Dont tack the upper edge as it will be tacked down with the overlapping next course. Nails should have a minimum, nominal shank diameter of 11- or 12-gauge, and a minimum head diameter of three-eighths of an inch. Felt nails have a higher holding power compared to staples. Synthetic Roofing Felt, do not use nails or staples without caps. The most common include galvanized roofing nails and aluminum roofing nails, but you can also find copper and stainless steel roofing nails. Staples can be used for tacking it down, but not recommended to hold. There are fewer requirements for these nails than those used to secure shingles. That is because the cement will take longer to dry, and when you remove it after it dries, you will cause damage to the roof. A roof felt is a moisture barrier made of natural and synthetic materials. Sometimes homeowners put in new nails when trying to attach something on the roof. Ultimately, it is best to refer to your building codes and roofing manufacturer for more specific guidance. Unroll the first course beginning at one gable edge and rolling to the opposite edge. Unroll the start of the first course, align with the edges and chalk line, and tack down the gable edge. To calculate the appropriate roofing nail length, add the thickness of the shingles and underlayment to the thickness of the sheathing. 2. Multiplied by 1.10 is 2112sqft. Galvanized nails are also available in a variety of lengths and sizes. 4. Like roofing nails, roofing staples are available in various sizes to accommodate different thicknesses of roofing felt. 30-pound roofing felt costs more, but also offers more protection. This step is vital to the success of your new roof and must not be shortchanged in any way. Divide the total footage by 100 to determine the number of "squares" in the roof. Corrosion is always a concern with any metal roofing fastener. Starting at the eave, a 19-inch (483 mm) strip of underlayment shall be applied parallel with the eave and fastened sufficiently in place. Note the differences in the specification and length of the fasteners as well as the nail/staple patterns. and water shield should also be installed a minimum of 2 ft. past the inside bearing wall of the structure,so check the size of your overhang/soffit,and 6-8" of wall thickness,and calculate what you need by adding 2 ft. to the measurements,you`ll find in most cases ,1 . Use galvanised clout nails to nail the first sheet of felt onto the roof. Qualities such as good waterproof ability even in every kind of weather, especially in areas with very high wind and a tendency for wind-influenced rain. Visit the officia. Pull the felt tight so that it lies flat and straight. Pressure-treated wood, Read More Pressure Treated Lumber For Roof Rafters (Lets See)Continue, As a homeowner, the various components of a roof are often vague, which might become a hindrance if you encounter roof problems, Read More Roof Eave Vs. Rake (In-Depth Comparison)Continue, Roof sheathing is one of the most common and significant parts of a building. For asphalt roofing shingles, use galvanized nails. Leave about 5cm between each nail, and ensure the sheet is pulled tight and sitting in line with the roof. When you get to an end shingle in a course, nail it in place so its edge overhangs the corner. Fasteners should be about 8 apart in the bottom 3/4 of the paper. Limited time deal. Drip edge flashing has three distinct parts and typically comes in 10 lengths. What Type of Nails for Felt/Underlayment? Ideally, the roof should be done when there is a forecast for several days without a lot of rain. All of these methods could allow water through the roof. Still, these rings give the nail extra staying power, or grip, in the shingles and sheathing. You may want to wear work gloves to avoid injuring your hand or developing blisters. A larger-size head might increase the risk of exposing part of the nail head in standard nailing locations on the shingle. 1. Repeat as necessary. The manufacturing process of felt nails is more complex than staples. IKO assumes no responsibility for errors that may appear on this website. For larger projects, youll need to use bigger nails so that they can better support the weight of the roofing felt. Start at the lower gable edge of the roof deck and work upward. 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. This makes them more likely to rust and break over time. Otherwise, all new nails should be inserted so that they are covered by the shingle above them. They may or not allow staple roofing felt. However, a roofing air nailer or air plasti-cap nailer are almost as quick. (Follow Correct Way), What Does A Roof Certification Cover? Professional Professional Tools & Support. Because they are less secure than nails, staples are more likely to lose over time. of the face of the lower-course shingle on the other side of the corner. Sheathing that gets wet before the roofing material can go on should be allowed to dry thoroughly before continuing. They are made from galvanized or stainless steel for durability and rust resistance. Consult your local building department for specific nailing applications. It is quicker to install and can withstand winds and extended exposure better than felt. The size and complexity of the roof decking affect how long the task will take, but regardless of size, most felt installs are similar.
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