Staples are faster but lack the holding power of nails. For example, when using Cambridge shingles, youll use roughly 240 nails, because of their Advantage size. Installing roof felt is a two-person job. Even if it is imperceptible to you, water will find it. 3. Use only plastic cap, corrosion-resistant nails or staples with plastic caps. Galvanized nails are also available in a variety of lengths and sizes. 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. One IKO test found that ring shank nails have 300% more strength than smooth shank nails. The length of each nail must be a minimum of 1 inches long, and for roof-overs, Atlas recommends a nail length of at least 2 inches. Ask your dealer for the correct amount of nails for your size roof, in the length you specify. 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. 5 Energy Efficient Roofing Materials To Use. These applications are ideal for flat roofs or protective surfaces under roof-level decks. A 2d nail is 1 inch long, for example, while a 16d nail is 3 1/2 inches long. 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. 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. The RSRS designation indicates the fastener is a ring shank roof sheathing nail. (Follow Correct Way), What Does A Roof Certification Cover? How to Install Roofing Tar Paper | Home Guides | SF Gate Roofing felt nails like cap nails are generally more expensive than staples. 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. Determine the bundles of shingles needed to cover the roof. The average 3-tab shingle needs four nails per shingle. Start at the lower gable edge of the roof deck and work upward. Staples are typically made from aluminum or other metals that are not as durable. Staples are faster and easier to use as an underlayment. After this, lines should be snapped every 34 as you move up the roof. 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. We'd recommend nailing from the centre of the edge of the sheet and working outwards. They require high skills and concentration when used, and any mistake or inaccurate placement can cause severe damage to the entire roof. They may or not allow staple roofing felt. What nail is right for your roof? - Digital Roofing Innovations Roofing Best Practices: How to Install Roof Sheathing | Pro Builder These factors above determine if your nail or staple underlayment is good enough to hold your roof. The hotdipped method results in a thicker layer of zinc that lasts longer, so they are preferred. Staples also have lower holding strength when compared to nails. You can learn more about the sizes of staples here. IKO strives to accurately reproduce the screen images of the shingle swatches and house photos shown. Measure the length from edge to edge and the eave to ridge, and multiply the values for the area of half the roof. Tar paper, #15 felt, use staples or nails? - Roofing Talk -A 3/12 roof measuring 20x48 per half is 960 for a total area of 1920sqft. For roofs with slopes greater than 4/12, a minimum overlap of 2-inches between courses is required. Attach or tack roofing felt to galvanized or aluminum 12-gauge roofing nails with a 3/8" head diameter with stainless steel staples 1*4" to 12" T50 staples or 7/8" staples to 1/2-inch hot dipped galvanized or aluminum nails. If there are hips, valleys, or dormers, increase the total by 10 to 25%. What Type of Nails for Felt/Underlayment? IKO manufactures products for specific areas in North America. Use galvanised clout nails to nail the first sheet of felt onto the roof. NOTE: Not all products featured will be available in your area. The NRCA (National Roofing Contractors Association) recommends a double layer of 15-pound underlayment for roofs between 3/12 and 4/12, and a single layer for decks greater than 4/12. Synthetic or non-bitumen underlay has become a popular choice with roofers over the past decade. The first course or starter strip is a 19-inch width of felt, and the next course overlaps it fully. 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. If you need to install new roof decking or OSB, youll need to nail it to the roof truss. For slopes between 2/12 and 4/12, double the resulting area value and then divide by the area a roll of felt covers. The quality of the material used is also an important consideration. 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. Another quality is its ability to withstand intense exposure to the sun over a long period. Roofing staples have a broad, flat head that helps to keep them in place and prevent them from pulling through the roofing material. What type of nails we should use for sheathing roof and Corrosion is always a concern with any metal roofing fastener. The head diameter is typically a standard 3/8-inch for all roofing nails. Understanding Nail Sizes and Basic Types - The Spruce 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 also available in both hand-drive and pneumatic versions. Nevertheless, the proper thing to do is always to check the requirements of your local building authority before starting or embarking on a building project. This is because staples are more likely to rust and break over time. Consider other underlayment options as needed, such as rubber or tar products. 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. what size roofing nails for 1/2 plywood - Columbus Roofing Company Whats The Difference Between Staple And Nails? 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. Add more felt if required They are waterproof or water-resistant and provide additional protection and a barrier against moisture penetration. Nails and staples are standard roofing underlayment options that you can use on all building products. The overhang to the next strip should be 3/8 inch. When nailing shingles, proper penetration into the roof deck is essential to ensure the nail and shingle remain secure. When the shingles are installed the felt is not going anywhere. $3.19 $ 3. The T-50s are compatible with most brands of staple guns or hammers. Fasteners should be long enough to penetrate at least 3/4" (19 mm) into wood decks or just . Perhaps they were underdriven in the first place. Fasteners should be about 8 apart in the bottom 3/4 of the paper. 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. The standard size for roofing felt paper is categorized into four. The most common width is 36", although they are sometimes available in other sizes. On the other hand, staples are larger and more visible. Roofing Nails | Nails | Screwfix Roofing nails with gaskets are intended for metal roofs. #12 x 1 in. Plastic Round Cap Roofing Nail (3,000-Pack) This should be laid before the first felt is applied. In terms of the installation, there is not much difference between the two fastening systems. 1 8d nail i like ring shank will help with a nail pop later 2 roof felt staples or plastic cap nails and rolled roofing aluminum 1 1/4 roof 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 weight or thickness needed will vary by regions, but 15-pound suffices in most locales. How to felt a shed roof: simple steps for protecting - GardeningEtc Drip edges on the eaves, any valley liners and all flashing should be installed before the tar paper is laid. The Hillman Group 42041 Galvanized Roofing Nails, 1-Inch, 100-Pack. Double that value and you have the full roof area. Mold and mildew will result and you could wind up having to rip off the roof and install a new one. You may be tempted to reuse these to save on costs. You want roofing nails with plastic washers for roof underlayment. Tar paper is infused with tar, and roofing felt with a bituminous substance granted, a semantic difference as both are petroleum-based products. 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. Roof felt is often called tar paper and is commonly used in similar ways, however, they are different. Simply put, smooth shank nails have a smooth shank. 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. Thus, you have to carefully plan the shingle and sheathing thickness and also the length of the nail. 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. A nail gun is the best way to install roofing felt nails. Follow manufacturers instructions when choosing nails. This is because they are faster and easier to install than nails. There are two ways to measure the size of a roofing nail diameter and length. The drip edge protects the edges of the roof deck and is often installed after the underlay is attached. Fortunately, galvanized roofing nails and steel nails pass the building code test. Felt nails are usually made from galvanized steel, which is corrosion-resistant. Nail down squarely (90 degrees) into the deck to secure caps flush to the underlayment. For steel, this means stainless steel or galvanized steel. Dry sheathing and felt paper also help ensure a watertight roof in severe climates. Roofing felt is commonly used between roof deck sheathing and roof shingles. The cap nail shank shall be not less than 0.083 inch for ring shank cap nails and 0.091 inch for smooth shank cap nails. They also go against most building code error codes and local building authority standards. Today, the penny system refers specifically to nail length. Share this Post: Back to Home. A tape measure and chalk line are needed for snapping the guidelines on the roof. They are easy to install and are unique in their work and functions. Roofing felt isnt designed to be left exposed to the elements. In this case, youll want to use roofing nails made of robust materials such as steel or aluminum. You cannot use screws for roofing shingles, only roofing nails are approved fasteners. Florida Building Code, 6th Edition SHINGLE ROOFING - Bay County, Florida Jewelry Box Felt Liner, A4 Size (8.3" x 11.8", Black) 4.6 out of 5 stars 2,348. Plywood Under Deck Boards! When you arrive at the rake, the paper should be cut flush with a knife and then adjusted to line up with the chalk line. Aug 15, 2010. Lay it over metal flashing edges around vents and pipes. Do not simply hammer the nail down, renail it in the same spot, or use the same shingle. Measure the size of your roof in square feet. Once the course of felt is tacked in place aligned to the chalk line, trimmed, and cut to length, go back and add more staples or nails to secure it in place approximately every 4 on gable edges and 8 apart elsewhere. Put fasteners at least every 8 inches; some suppliers recommend staples about every 4 inches. Use a utility knife or hook-bladed knife to cut the felt. The Purpose of Roofing Felt - Is Roofing Felt Necessary? - IKO [4] 4. You should check with your building code and local bylaws to confirm. Point: diamond or blunt. Repeat until the roof is covered. 8D nails are considered standard for OSB roof sheathing materials. Well explain how to install the roof felt and drip edge, and make some tool and material recommendations. The added depth that roofing felt nails provide makes them slower to install. Roll out the rest of the course, tacking along the center as you go. This is How Far Apart Should Newel Posts Be! Successive courses repeat the 19-inch overlap. Start at one of the upper corners of the felt and continue along the perimeter. Ideally, the roof should be done when there is a forecast for several days without a lot of rain. The roofing nails outweigh the roofing staples durability, holding power, installation, extended use, and compliance with local building authority codes. 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. How Many Nails Do You Need To Install Metal Roofing Felt Paper? Here at Roofing Superstore, we've put together a guide outlining the different types of roofing nails, and which materials they work best with, so read on. Here is what a roof certification letter encompasses. It must be covered with waterproofing membrane, usually "roof felt," also called tar paper. Felt is typically 3 feet wide, so that means a roll is approximately 144 feet long. 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. He is passionately interested in home improvement, renovation and woodworking. 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. Even though nails also hold roofing materials in place, staples are often preferred because they have a solid visible grip. This is because there is more surface area for the nail to grip. They arent connected, as they are with screws. 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. Use the nails with or without plastic caps. 1 Use a sharp knife to trim that shingle to within about 18 in. ONLY USE 1 diameter plastic cap roofing nails. 320 nails will be needed to install a square of standard 3-tab shingles, assuming four nails per shingle and 80 shingles per square. How to Apply Underlayment to a Roof - Better Homes & Gardens Staples can be used for tacking it down, but not recommended to hold. The main drawbacks are cost and the need to use capped fasteners. Roofing felt nails are less visible than staples, which give your roof a neater appearance. Most building codes regulate that at least a 12 gauge shank with a diameter of 3/8 head be used. 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. Repeat as necessary. The answer depends on the thickness of the plywood and the building code. The felt should be trimmed flush with the edge or 1/2 past to wrap the edge when the drip edge is placed. Common nails, or even wood screws, may be acceptable nails for OSB roof sheathing. How To : Installation of Roofing Underlayment - Metal Roofing Source Nail shank diameter should be at least 11-12 gauge for roofs. 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. Roof Felt - Roofing - Building Materials | Wickes Lets pretend the roof design details are conventional and so the roof deck sheathing will be 5/8" to 3/4". Grip the hammer tightly by the end of the handle and hold your thumb at the top of the shaft. A larger-size head might increase the risk of exposing part of the nail head in standard nailing locations on the shingle. All nails and staples should be placed on the lower half of the paper. Trim the felt, so it is flush with the face of the drip edge. Roofing nails that are 11- or 10-gauge are also allowed by most building codes as they are thicker and sturdier. In addition, nails are stable and allow roofers to get precise points when using them. The installation process for felt nails and staples is relatively simple and can be completed by most people with little experience. 2004-2023 IKO Industries Ltd., IKO Industries, Inc., and their affiliated and related entities. 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. And while they may seem pretty straightforward, there are various factors to consider when choosing the suitable roofing materials and methods for your project. The sun makes the felt brittle and more susceptible to tearing, and rain causes it to ripple. Unlike selfadhering underlayments, such as ice and water protector, felt underlayment needs to be fastened in place with nails. Mark every 34 or 33 and snap a line across the deck for 2 or 3 overlaps on slopes greater than 4/12. Directly answering if you can use staples for roofing felt depends on your local building authority and fire codes. Or, if a roofs decking has warped or bent, it can pull nails out of place. Most professional roofers use staples instead of nails when installing roof felt on larger roofs. What Size Nails For Roof Sheathing - MasterYourNails.com At the gable ends trim flush to the decking or leave 1/2 to 1 to wrap the edge when installing the drip edge. The actual process of putting down the underlayment will be one of the fastest parts of the entire roofing process. Rolled roofing is easy to obtain and can be found at all home improvement stores. Sometimes homeowners put in new nails when trying to attach something on the roof. Tar paper, #15 felt, use staples or nails? - Roofing Talk Choosing the suitable fastener for your roof or shingle is dependent on four factors; the type of fastener, correct installation, placement, and holding strength. This moderately-priced roofing nailer holds up to 120 nails per load and allows a variety of 11-gauge (.12 inches) nail sizes ranging from 3/4 of an inch to 1-3/4 of an inch. This makes it 320 nails per square foot. Leave about 5cm between each nail, and ensure the sheet is pulled tight and sitting in line with the roof. 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. Ultimately, it is best to refer to your building codes and roofing manufacturer for more specific guidance. You can also install asphalt shingle roofs using either a staple or nailer. The felt should be secured every six inches with nails or staples. They can also be overdriven or even underdriven. Dont confuse these cap nails with gasket roofing nails. IKO assumes no responsibility for errors that may appear on this website. This article will explore the pros and cons of each technique to help you make an informed decision for your next roofing project. What size nails for OSB sheathing? You may prefer to use copper roofing nails on a roof with other copper accents. The Best Roof Underlayments of 2023 - Picks from Bob Vila What Size Staples For 30lb Felt? (Read This First) | [2023] Where a roll ends and a new one is begun, the two rolls should be overlapped by four inches. 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. 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.) 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. Pack Size. When preparing to shingle or reshingle a roof, laying roofing felt offers an extra barrier against moisture. Starting at the eave, a 19-inch (483 mm) strip of underlayment shall be applied parallel with the eave and fastened sufficiently in place. Step 11 Repair any areas inside the house that were damaged by the leak, and enjoy your dry house! When installing thicker shingles, you may need to use a longer nail in order to penetrate the OSB beneath fully. Your attic needs to breathe. 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. Heavyweight asphalt shingles commonly have a longer service life. As a result, they are less susceptible to jamming and easily reload. On the flipside, if you rush through the initial steps, the felt installation can be compromised by sloppy oversights such as stray nails. A greater overlap provides more protection but may cause problems with spacing and fastening upper courses relative to sheathing seams. Under most building codes in North America, 12-gauge is the minimum thickness of nail allowed on a roof. The International Residential Building Code (IRC) states two layers of felt for slopes between 2/12 and 4/12. Nails for roofing felt are also more expensive than typical nails. Many metal roofing dealers specify minimum of 7/16" sheathing. By Maria Goudiss. It is quicker to install and can withstand winds and extended exposure better than felt. In areas where you can use extreme weather conditions, such as wind-driven rain, ring shank copper nails to seal or resist strong winds blowing over the roofs. By the end of your read, you should know how to install felt underlayment for asphalt shingles. Roofing nails should be 1-1/4 to 2 inches long to ensure that it sufficiently penetrates and embeds in the roof sheathing. Well walk you through the types, sizes and materials you may choose from when picking a roofing nail. This website uses cookies to provide necessary functionality and to improve your online experience. However, as roofing nails will usually be hidden by the shingles above them, steel nails dont detract from the look of the roof. (A Beginners Guide) Done. Divide by 432 or 216 depending on the weight of felt for 4.89 rolls of #15 or 9.78 rolls of #30 felt. At intermediate supports, fasten panels 12 inches on center. 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. of the face of the lower-course shingle on the other side of the corner. #30 Asphalt Saturated Underlayment Benefits. Account for waste. 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. Fasten drip edge on eaves with galvanized nails and a hammer, about 12 inches apart, before laying roof felt. Staples are also not as durable as nails and are more likely to come loose in high winds. The two main types are roofing felt 15 and 30. Visit the officia. However, you may find they are more expensive. What Size For Roofing Felt? To calculate the appropriate roofing nail length, add the thickness of the shingles and underlayment to the thickness of the sheathing. It will protect the roof for about a month without shingles, provided it is fastened properly and it isnt too windy. There are fewer requirements for these nails than those used to secure shingles. They cost less per square foot to install than nails, making them a good choice for those working with limited funds. In normal wind zones the nails should be driven at 6.0 O.C.
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