8 / 12. For best appearance, use heavier weight shingles, or laminated or textured shingles. Space the fasteners a maximum of 16" (406mm) apart for horizontal siding panels, every 12" (305mm) for vertical siding panels, and every 8" to 12" (203mm to 305mm) for accessories. 2023 The Taunton Press, Inc. All rights reserved. This number can vary according to personal preference but you need at least 1 of overhang. By creating an account, you agree to Pro Builder's terms of service and privacy policy. Avoid standing between framing, which can induce panel deflection. This should take up the that gap!! But if the roof is new, you should call your contractor to finish the job, especially if the job was incomplete. I doubt that that is the root of the problem though. As of 2021, if plank decking has more than a 1/8" gap between the planks, your roof decking must be replaced per the manufacturer's installation instructions before the roofing material can be installed. The best installation method is to leave a gap between the drip edge and the fascia board, about the width of a finger. Fascia Boards are what hold your gutter system in place on your property. (Beginners Guide)Continue, We all like vacations. The siding underneath the overhang is known as the soffit. Dumpsters overflowing with lumber are merely a symptom. Steps for Installing Drip Edge and Step Flashing Here is Tom Silva's process: 1. However, if there is a space between the roof sheathing and the fascia, you might have to install a drip edge above the fascia to protect fascia from moisture. Solidly sheathed roofs include structural panels such as plywood and oriented strand board (OSB) with 1/8" gaps between panels as required by panel manufacturers. Continue caulking until the entire fascia board has been sealed. . These gaps, if significant, can become a gateway for rodents and other dangerous animals into your home. A roof system consists of several elements working together to protect the home. Re the fascia gap, it is normally installed tight, often the fascia is even installed up tight to the shingles, so that the roof sheathing is butted to the inside of the fascia. A forum community dedicated to professional roofers and enthusiasts. There's some discoloration but no frank mold/rot thankfully. Pro Builder is an advertisting supported site and we noticed you have ad-blocking enabled in your browser. Steeper roofs will have lighter loads per square foot. As mentioned above, if light is getting in, water will get in as well. If the workspace you need from the attic is not enough for you after removing the fascia, you may have to remove the three-tab shingles and roof sheathing from the lower end of the work area. 7. Use a 10d box (0.128-inch-by-3-inch) nail as a spacer to gauge 1/8-inch edge and end spacing between panels. The problem: because the roof sags in places (its an old house) I will end up with in places an 1" to 1-1/4" gap between the top of the fascia board and the sheathing. If it extends far from the edge, it will interfere with the flashing. That said, overhangs can extend as far as 2 without the need for external supports. A caulking gun and exterior waterproof caulk are the primary items you need to seal your fascia and keep water and insects out of your home. That mesh can put when they were replacing plywood. OSB is lightweight, relatively inexpensive, and strong enough to resist bending or breaking should someone walk on the roof. Apply a silicone caulk line to the gaps between the gutter and the fascia board. You can include enclosed eaves by installing soffits underneath the overhang to wrap the overhang space. Gaps between the roof and an adjacent wall, like a second story or dormer, most likely need sealing up to prevent leaks, insulation issues, and rodent infestations. Remove wrinkles and flatten the surface of the shingle underlayment before installing asphalt or fiberglass shingles. At intermediate supports, fasten panels 12 inches on center. Make Your Rsum Shine With These Tips, Better Attic Insulation: Simple Solutions for 4 Common Problem Areas, Here Are the Winners of the 2023 NAHB Student Competition. There is no true standard size for overhangs, but typical overhangs that are used for protection from rainfall are 16-18 inches wide. Weep holes provide ventilation as well as drainage. Shingle manufacturers specify a minimum overlap, usually in the range of 4 inches to 5 inches. Personally, I am a BIG BIG fan of Renovation and Rehabilitation as opposed to Remodeling. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. Apply caulk to nail holes also for added protection. (and scroll down to see more details on each, with installation hints and tips, below), Step 1: Check the nailing surface is level, Step 2: Ventilate the roof according to current building codes, Step 3: Properly fasten panels (includingfastening and spacing hints), Step 4: Cover roof sheathing with shingle underlayment felt, Step 5: Install shingles according to manufacturer recommendations. I noticed some old bee nests in the insulation near the eaves. There are gable vents. The roofer removed old roof on Thursday, put down new felt, but shingles didn't get delivered, and it snowed today (3"). Or should I install a drip edge (as there is not one at this point)? Ensure to check around your house to seal all the gaps between your roof and the walls. Plywood and OSB are ideal materials for roof sheathing systems, and following these simple construction steps will ensure optimal performance. The drip edge wraps around the fascia and keeps water from leaking into the back of the fascia. Plywood boards and oriented strand boards (OSB) often expand or contract during slight changes in moisture content. It will ensure the roof sheathing lines up with the top of the fascia center. The recommended maximum gap between roof sheathing boards for low-quality, 3-tab shingles is 1/4-inch. Cut the tip on a tube of exterior, waterproof caulk at a 45-degree angle, advises The Exterminators. Roof sheathing should be installed _____ to the rafters. The drip edge ensures the protection of the sheathing and the facia. The shingles should also overhang the drip edge 38 to 1/2 an inch. The drip edge flashing is non-corroding moisture protecting metal you can attach to your roofs edge to serve as water drainage for your roof. (Things You Should Know)Continue, Knowing that knee walls are used to separate interior and exterior arrears in the attic is very important. The roof drip edge should extend one to two inches over the fascia to protect it from moisture. These distances may be increased if the manufacturer permits greater spacing based on wind load testing. No mud sill. Use colored caulk to match the current paint color if you are not repainting the fascia boards. Install a drip edge to keep water from leaking into the sheathing. No problem! Use a screw gun to nail the fascia board in place. In other words, caulking is applied where moisture would otherwise penetrate and causing leaks and deterioration. Use a chalk line or straight edge to align fasteners on framing. Does the gutter go under or over the flashing. Both parts provide a finished look and keep bugs and critters out of your attic, while soffits also play an important role in ventilating the attic. This will mask surface imperfections and reduce the risk of shingle ridging. Also, keep a finger width gap between the fascia and the drip edge. This is a gap between the fascia board (where the gutter is hung) and . But at what point would it be a problem? A minimum net free ventilation area of 960 square inches for each 1,000 square feet (1/150th) of the ceiling area is required. Use materials in the roof assembly that can safely store water, like solid wood, treated cellulose, and plywood. Replace any cracked, rotted or missing siding, making sure the new piece overlaps the step flashing by at least 2 in. If the sheathing goes all the way to the soffit and does not extend past the face of the soffit, Install a drip edge with a long leg from the outside. I've recently noticed that when there is a heavy rain I can see water dripping f Roofing, Gutters and All Waterproofing Anywhere. Fasteners should be 3/8 inch from panel ends and 3/8 inch from panel edges (see hints below). When installing the drip edge, ensure it extends two inches over the fascia board. Staples are not recommended for roof sheathing attachment in high-wind areas. Directs water flow away from your fascia board and decreases the risk of rotting. Notice that when the fascia is placed, the top edge of the fascia is even with the top of the sheathing. 3. 5 Steps to Proper Roof Sheathing Installation Step 1: Always Check for a Level Nailing Surface. The gap is meant to help with airflow throughout the attic. Although, if it is a large gap, it can be dangerous to the house, as it will be susceptible to rodents and moisture. Hard to tell how large the gap is but its probably 1/2 or less. Sealing gap between window buck and sheathing. However it should be covered with a material made of aluminum or vinyl with a type of screen to allow air to enter but keep small animals and rodents out. In Todays Market, Who Has More Incentive to Move: Renters or Buyers? Also, ensure that your roofing constructor installs a drip edge. Loads will vary with the pitch of the roof; the flatter the roof, the greater the load on any one section. Install a drip edge to keep water from leaking into the sheathing. Often, there's old, hardened caulk where the two pieces overlap at the inside corner. 3. This is the upper edge of the first row of roof sheathing, with enough overhang to allow the sub fascia and fascia to tuck neatly underneath when the time comes. F. Eave Drip Edges: Along all eves and rakes drip edges to be minimum 0.024" mill finish aluminum sheet, brake formed to provide 5" roof rack flange, and 1 1/2" fascia flange with 3/8" drip at lower edge. When placing your fascia, ensure that the edge of the fascia board is at the same level as the sheathing. Continue moving around the house until every fascia board has been caulked and sealed. Given that scenario, Silva has developed a number of practices that take into consideration the potential for ice damming while also managing water run-off. Moreover, the air and moisture from the gaps can increase the humidity in the house, which will reduce the insulation. Second, the water vapor impermeability of the foam sheathing has to be dealt with. Densities are typically between 56 to 72 kg/m (3 to 4 lb./cu. Thanks for the follow-up response. Filling the gaps between your roofing and the walls is not difficult if you have the required tools. I have a 1 inch gap between my gutter and fascia. We welcome your comments and suggestions. Two feet is the general maximum length for a typical roof overhang. But the excess heat and the trapped humidity from the wood will generate a steam effect, which will make the roof shingles dry halfway from the outside. With drip edge, the shingles should still extend out, but mainly for cosmetic reasons, to cover the drip edge. 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. Roof sheathing overhang provides shelter for your building, protecting it from weather like rain and heat. Each day, our editors assemble the latest breaking industry For a better experience, please enable JavaScript in your browser before proceeding. The roof deck should overhang the fascia by 1/3 inches to 1/4 inches so you can comfortably install a drip edge between your fascia and the roof deck. I am replacing my exterior crown moldling with fascia board to provide a flat surface for gutters, which are not on the house at present. Ensure the rafter tail measurement is thrice the overhang length that you need. On my shed my sheathing does not protrude, Actually how both my house and shed are done is a 1 x 6 (house) 1 x4 (shed) fascia is installed to end of rafters, then 1 x 1 1/2 is tacked onto the fascia at the top. This is a gap between the fascia board (where the gutter is hung) and roof decking. COPYRIGHT 2023 PROFESSIONAL BUILDER. This is a gap between the fascia board (where the gutter is hung) and roof decking. say that I expect to be a life-long subscriber." As you can see in the photo, it is flush with the rafter ends and little support is provided for the drip edge. (Explained), Uneven Transition Between Cement Board And Drywall, Drywall Anchor Keeps Breaking (Causes & Fixes). You must be a magazine subscriber to access this feature. your inbox. If asphalt shingles are installed over sheathing with gaps exceeding 1/4-inch, over time, these gaps may telegraph through and become visible. To prolong your roof sheathing, follow the sheathing spacing recommendations of your local building code or the APA Rated Sheathing. Moreover, if you did not install a drip edge in your roofing, it could cause roof leakage. Gap between fascia and roof sheathing - need sealing? The best installation method is to leave a gap between the drip edge and the fascia board, about the width of a finger. the application of sheathing at the roof eaves. Do not seal rotted wood. Another question please. Screws can be used for even greater withdrawal strength, but should be sized by the building designer. Is it common practice to have that gap between the fascia and the sheathing? It is ideal that soffit and fascia materials be installed before you place tiles or any other type of roofing material on the roof. This site is protected by reCAPTCHA and the Google. However, this gap is the perfect place for pests and unwanted wildlife to enter your home. Keep spreading the caulk to the gap, and remember to smoothen it. On the other hand, the spray foams are for smaller gaps of about six inches. Start at the end of a fascia board and caulk the corner edge where two boards meet. There are some reasons why there are gaps between your roof and wall. Wood boards are also considered as solidly sheathed, If you are applying the sealants yourself, avoid spraying the spray foam close to the lightbox and electric boxes. This will protect a roof from most types of damage. If water gets trapped behind the exterior walls, it can cause structural damage that you won't see right away. Follow these 5 simple construction steps when installing roof sheathing: (and scroll down to see more details on each, with installation hints and tips, below) Step 1: Check the nailing surface is level Step 2: Ventilate the roof according to current building codes Step 3: Properly fasten panels (including fastening and spacing hints) If fire is a concern, you'd presumably want to block it or cover with something like 1/8" metal screen. In addition, fixing a drip edge to your roof sheathing, though expensive, can save you from frequent fascia repair. generally you need some ventilation in the roof it takes care of condensation. These, Read More Difference Between Terrace And Roof? Position the ladder on firm, level ground. Lorem ipsum dolor sit amet lorem ipsum dolor sit amet lorem ipsum dolor sit amet. My plan was to install baffles for future soffit vents (house has gable vents only). Use galvanized roofing nails to nail the rafter extension to the old rafters. DoItYourself.com, founded in 1995, is the leading independent home improvement and repair website. 5. What kind of caulk to buy to seal exposed nails on flashing? The roof of a building adds value and shows individual personality,, Read More Why Dont Europeans Use Tar Shingles Roofs? They should not extend more than this because shingles that are too long will corrode and break off. Well in order to clear this up, the minimum you can do per code is; " R905.2.8.3 Sidewall flashing. Also, consult your contractor to ensure you are on the right track. However, if there is a small gap already, it is harmless. My question is, what kind of caulk should I buy to seal all these exposed nails that are already rusting? This gap is caused when roof decking is stopped too short and is not flush with the fascia. Ensure it covers the fascia with enough space to allow you to place the drip edge flashing in between. If your roofing is new, contact your roofing contractor and relay the issue to him when you notice the defect.
