These applications are ideal for flat roofs or protective surfaces under roof-level decks. According to BS 5534, the nails used to fix battens to rafters should usually have a diameter of at least 3.35mm. Fasteners should be long enough to penetrate at least 3/4" (19 mm) into wood decks or just . F1667 RSRS-03 (2 " 0.131") nails or ASTM F1667 RSRS-04 (3" 0.120") nails. Plywood Under Deck Boards! Do You Nail Or Staple Roofing Felt? - Roof Critics Account for waste. Step 11 Repair any areas inside the house that were damaged by the leak, and enjoy your dry house! All of these methods could allow water through the roof. Roof felt is often called tar paper and is commonly used in similar ways, however, they are different. 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. These have large plastic caps for heads, which help prevent water intrusion. It is required to block any rain that gets under or between shingles from penetrating into the wood decking. Start at the lower gable edge of the roof deck and work upward. Table R803.2.3.1 specifies the maximum fastener spacing based on framing specific gravity, exposure category, and wind speed. Type 316 Stainless Steel Nails - These are what you should be using on any new roof build involving an exterior wood product. Roofing and reroofing are two of the most common home improvement projects. They may or not allow staple roofing felt. Continue along the roof to the other end and trim the felt flush at the end with a utility knife. Mold and mildew will result and you could wind up having to rip off the roof and install a new one. Place your nails in a plastic cap or one with nails. Multiplied by 1.10 is 2112sqft. They arent connected, as they are with screws. The first course or starter strip is a 19-inch width of felt, and the next course overlaps it fully. $3.19 $ 3. (A Beginners Guide) Done. Local codes may have different requirements, and shingle manufacturer warranties often specify underlayment requirements, so check them out too. 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. Roll out the first course, align it, tack it down with galvanized nails or staples, and cut it to size. Otherwise, all new nails should be inserted so that they are covered by the shingle above them. This is because there is more surface area for the nail to grip. It is versatile, strong, and affordable. The head diameter is typically a standard 3/8-inch for all roofing nails. 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. Lets pretend the roof design details are conventional and so the roof deck sheathing will be 5/8" to 3/4". Unroll the felt on the roof deck or ground, measure the width, and cut. How To : Installation of Roofing Underlayment - Metal Roofing Source The main drawbacks are cost and the need to use capped fasteners. 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. Its general knowledge that nail roofing felt, and staples are almost the same and give desired results: securing or holding the roofing felt. Sheathing that gets wet before the roofing material can go on should be allowed to dry thoroughly before continuing. Roofing felt is commonly used between roof deck sheathing and roof shingles. But, as with so many other projects, the key lies in the prep work. What nail is right for your roof? - Digital Roofing Innovations $7.18 $ 7. There are applications where felt is necessary and others where it is not. The seams between sheets use nails at 5cm spacing. The most distinguishing feature of a roofing nail that sets it apart from other types of nails is the size of its head. Installing roof felt is a two-person job. Head diameter: 0.55" - 0.79". Use the nails with or without plastic caps. Do the other side of the roof the same way, also with an overlap at the peak. Installing Cedar Shingles - Fine Homebuilding Therefore, settling to use any of your options depends mainly on the slope of the roof of the building they are being installed on. How to felt a shed roof - YouTube Choosing longer rolls will allow you to cover more roof surface with fewer seams. When protected by well-maintained shingles, the underlay will last between 20 and 30-years, or as long as the asphalt shingles. This means they may lose over time, especially in high winds or severe weather conditions. 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 synthetic underlay has greater water-resistance and the no-slip coating offers better traction for installation safety. Stainless steel nails are best used for slate and ceramic roofs or asphalt shingle roofs in coastal climates. The penny system is an old way of classifying nails. 8D nails are considered standard for OSB roof sheathing materials. Roofing vs Framing vs Siding Nailer - Fine Power Tools The average 3-tab shingle needs four nails per shingle. The overhang to the next strip should be 3/8 inch. If youre unsure how to install roofing felt or are just looking for some pointers, this guide is all you need. Upper lengths of edge flashing should overlap lower lengths by a minimum of 6. PDF Roof Assemblies - Florida Building 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. A ring shank nail is also called an annular roofing nail or corrugated roofing nail. In addition, the manufacturer's instructions should indicate which side of the roofing felt goes down if that matters for the specific product. Start the roof felt at one bottom corner of the roof. Corrosion is always a concern with any metal roofing fastener. This goes a long way to bring to light how durable nail roofs are. Roof Underlayment Requirements & Recommendations - is roofing felt There are a couple of different ways to attach felt. How to Estimate Roofing Materials: 11 Steps (with Pictures) - wikiHow well overall size is 15x8 and from ground to pitch of the roof it should not be more than 10 feet.I am thinking front 15 feet wide wall will have a higher side of roof and back 15 feet wall . Strips should always lay flat. Staples can be used for tacking it down, but not recommended to hold. The felt should be secured every six inches with nails or staples. They can also be unsightly if they rust or break over time. Product Specs Type: Synthetic Size: 250 feet long by 4 feet wide Fire rating: None. 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. Be sure you to use the correct nail length and place it properly. On the other hand, Roof nails have a more substantial and extended holding strength. Aluminum is a weaker metal than steel and copper. Consider other underlayment options as needed, such as rubber or tar products. [4] 4. 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. Nails should have a minimum, nominal shank diameter of 11- or 12-gauge, and a minimum head diameter of three-eighths of an inch. Shank type: smooth, ring, screw. 1. Are you looking out for ways of preserving your roof rafters to enable them to stand the test of time? Not only is this roll affordable, it's also slip-resistant. It is important to note that the nail and staple roofing felt have these outstanding qualities. Steel makes for strong nails. They are the most basic type of roofing nail and cheaper than the other two options. Most domestic shed roofs will require at most two runs of felt before they come to the ridge. Step-by-Step Ridge Vent Installation Instructions - Fine Homebuilding If you are on a budget or are looking for a fastening system that is easier to install, staples may be the right choice. Limited time deal. The size and complexity of the roof decking affect how long the task will take, but regardless of size, most felt installs are similar. So for the 24 square roof example, you would need 2.4 rolls of synthetic underlayment, or 6 rolls of regular #15 felt. They have a square-shaped head, instead of the more typical circular head you see on other nails. Roofing Best Practices: How to Install Roof Sheathing | Pro Builder How Many Nails Do You Need To Install Metal Roofing Felt Paper? 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. Continue unrolling and tacking until you near the other gable edge. In terms of durability, felt nails are more durable than staples. How Long Should Roofing Nails Be? - Home Efficiency Guide Use four roofing nails per shingle, as indicated on package instructions (six nails in high-wind areas). Finished Product We'd love to see how your project to replace roofing felt turned out! For most homeowners, aesthetics are essential when choosing a fastening system. A nail gun is the best way to install roofing felt nails. This is essential in windy conditions or in areas that experience severe weather conditions. However, both fastening systems are durable and will last for many years with proper care and maintenance. 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. However, as roofing nails will usually be hidden by the shingles above them, steel nails dont detract from the look of the roof. Start at the lower edge of the roof, nailing the batten into place at the centre of the rafter. Roofing Felt that exceeds the scuffed area by 6" (152 mm) They require high skills and concentration when used, and any mistake or inaccurate placement can cause severe damage to the entire roof. 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. Dry sheathing and felt paper also help ensure a watertight roof in severe climates. In addition, both require similar tools for installation. Nail shank diameter should be at least 11-12 gauge for roofs. If required by code, wind conditions, or just regular practice, use plastic capped roofing nails. 18 ($1.06/Sq Ft) $11.99 $11.99. A roof felt is a moisture barrier made of natural and synthetic materials. However, this is a detriment to the roofs performance. What Size For Roofing Felt? Your attic needs to breathe. Synthetic underlayment comes in 10 square rolls, while regular #15 felt comes in 4 square rolls. 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. Install the drip edge, so it projects past the ends of the eaves by about 3/4 at the gable or rake end. How to Attach Roof Felt on a Shed: 15 Steps (with Pictures) - wikiHow PDF Installation Instructions for Feltbuster High-traction Synthetic - Gaf Nails and staples have several significant differences. Eugene has been a DIY enthusiast for most of his life and loves being creative while inspiring creativity in others. A 2d nail is 1 inch long, for example, while a 16d nail is 3 1/2 inches long. No matter what fastening system you choose, follow the manufacturers instructions carefully to ensure a successful installation. One of the essential factors is selecting a suitable fastener! Measure up the roof and snap chalk lines where the upper edge of each course will go. A typical roll of 15-pound felt is 36 wide and 144 long and covers 432sqft. The installation process for felt nails and staples is relatively simple and can be completed by most people with little experience. Depending on your local building authority, you can use staples for roofing felt or, in other words, as roofing felt underlayment. Aug 15, 2010. Roof nails go deep into the roofing shingles and the roof decking, providing a firmer grip and preventing the asphalt from sliding around. Replace any damaged decking and sweep the deck clean of sawdust and debris. 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. 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. This makes them the better option for most people. This is because each nail needs to be driven individually into the roof. Screws leave small gaps in the material they are driven into, and this may be enough to allow for a leak. The heavy-duty felt or paper is saturated or coated with bitumen. As a result, most local building authorities have banned staples for roofing. IKO assumes no responsibility for errors that may appear on this website. The most common include galvanized roofing nails and aluminum roofing nails, but you can also find copper and stainless steel roofing nails. 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. Materials used to make the natural and synthetic underlayment include; wood cellulose, polyester, and fiberglass. 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 the nails are made of a stronger material that can withstand more wear and tear. The ridge cap used on this roof . To calculate the slope or grade of your roof, youll need to measure the rise and run of your roof. Where a roll ends and a new one is begun, the two rolls should be overlapped by four inches. Or, if a roofs decking has warped or bent, it can pull nails out of place. Overlaps will typically be minimum 50mm and will depend upon the slope of the roof. 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. The length of nail you use depends on the thickness of the sheathing and shingles you use. However, a roofing air nailer or air plasti-cap nailer are almost as quick. It is available in rolls of 15 and 30-pounds per hundred square feet. Its working rate is prolonged but heavyweight, making work tiring. It must be covered with waterproofing membrane, usually "roof felt," also called tar paper. This can cause your roofing material to lift, making it more susceptible to damage in a storm. Most professional roofers use staples instead of nails when installing roof felt on larger roofs. Divide the total footage by 100 to determine the number of "squares" in the roof. Nail metal drip-edge flashing, which bends over the roof and down the edge of the facing board, on all roof edges. 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. This way, you can avoid making multiple trips to the store for more supplies. 2. As a result, they are less susceptible to jamming and easily reload. While it is common to find nails with a shank diameter of 13 inches, they cannot be smaller than 12 gauge (2.67mm) and still comply with the IBC. Staples are typically made from aluminum or other metals that are not as durable. What Type of Nails for Felt/Underlayment? What size roofing nails should I use? - Kyle's Garage They are easy to install and are unique in their work and functions. Felt nails are less visible than staples. Directly answering if you can use staples for roofing felt depends on your local building authority and fire codes. By Maria Goudiss. Trim the felt, so it is flush with the face of the drip edge. 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. Nail shank diameter should be at least 11-12 gauge for roofs. Roofing nails with gaskets are intended for metal roofs. Some roofing felts are actually glued down. The Purpose of Roofing Felt - Is Roofing Felt Necessary? - IKO