how many cap nails per square of underlayment
It's not that roofers are trying to rip anyone off, they just don't see the need for nailing the underlayment so heavily since the shingles do such a fine job of securing the underlayment. Synthetic underlayment rolls are 4-feet long and cover closer to 1000 square feet. Summit ® 60 is a lightweight synthetic roof underlayment designed to enhance the life of a roof system through superior water resistance and UV protection.. A synthetic alternative to #15 felt, Summit ® 60 underlayment provides enhanced protection against water and mold growth. Felt 30-pound – 10 cents per square foot; Vapor impermeable synthetic underlayment – 11 to 15 cents per square foot; Vapor permeable synthetic underlayment – 20 to 90 cents per square foot; Synthetic underlayment is more susceptible to wicking at laps than asphalt felt underlayment, which can lead to moisture damage to the roof. The most common type of shingle, called a three-tab or strip shingle, is generally packaged three bundles per square. To determine the number of squares on the gable roof above, simply divide its total of 24,000 square feet by 100. Please enter another or. Most shingle manufactures recommend using four nails per shingle on the main area of your roof and five nails per square in the first row of roofing. Fas-n-Tite 1-3/4-in 12-Gauge Electro-Galvanized Steel Cap Nails (2000-Count). In general, four to five nails per shingle would be sufficient. How many squares per roll of underlayment? For you who live in windy areas, you may want to use 480 nails per square. For example, this shed roof has one roof plane. Fasteners are to be located on the nailing guide line, 9" above the 4 nails per field shingle, that’s about 320 nails per square. The unit used to estimate the synthetics are grams-per-square-meter (GSM). If you are currently planning to install roofing shingles or its underlayment, then there are some factors that you need to consider, such as the roofing material weight, building’s foundation, and framing, etc. When staples without caps are used to temporarily fasten DuPont™ Tyvek® WRBs, no more than 4 staples per square yard should be installed. Some roofers use regular roofing nails, some use staples, some attach it with hardly any nails at all, using only a single nail every few feet. The roll size depends on the type of underlayment product. Then, multiply length x width to get the square footage of each plane. How to Cut Tin Roofing with Three Best Methods, Tutorial on How to Install Architectural Shingles over 3 Tab Shingles, How to Install Roof Ventilators in the Roofing Area and Bathroom. Manufactured for quick and easy installation, electro-galvanized plastic cap roofing nails are ideal for fastening roofing felt, house wrap, sheathing, underlayment, and more. Base and cap flashing shall be installed in accordance with manufacturer's installation instructions. Product Testing Results - Printable PDF. To assess the installment process accurately, then you need to know how many roofing nails per square are required inexact. Synthetic underlayment comes in 10 square rolls, while regular #15 felt comes in 4 square rolls. Nail Quantity per Square Shingle manufacturers recommend using four nails per shingle in the main part of the roof and five nails per shingle in the first row. Cedar is a solid choice of material for roof shingles. You will also need to know the slope of your deck. Inset photo above: Rodney Diaz. The roof is indeed one of the most crucial elements of the building’s structure. Nails will also be required for any roofing project. Finally, calculate your roof's total square footage by simply adding the square footage of each of the planes together. Synthetic underlayment has existed since the early 2000s with various types available. Manufactured by JevCap the Hurricane Cap Nail product is pre-assembled with a large 1 5/8" diameter galvanized 30 gauge steel cap with 1 1/4" x 11 gauge (.120") annular ring shank diamond point nail. Finally, calculate your roof's total square footage by simply adding the square footage of each of the planes together. Tiger Paw 1000 sq. The key to performing a successful roofing project is knowing how much height the roof must bear – which is crucial information if you work with aged framing and foundation. ... For high wind areas or when shingles are being applied to a mansard, six nails per shingle are required, or 480 nails per square. Many roofers argue that the use of cap nails to install synthetic underlayment provides an added measure of waterproofing if a high-wind event removes the top layer of shingles or tiles. Refer to the application instructions on your shingle wrappers for the correct nailing pattern. Don’t hesitate to ask someone who knows more about the roofing installation project about how many roofing nails per square you should use. ft. for the total square footage of the roof. A x B = 120' x 100' = 12,000 sq. If you so happen to have thicker underlayment (3/4 inch or more), then use 4d ring shank nails. of nails for each underlayment square and 3 ½ lbs. Synthetic underlayment is usually differentiated to their weight and their feeling. For a listing of roofing contractors in your area, use our Find a Roofing Professional locator tool. A minor mistake might cost you pricey fixing work, so it’s always recommended to hire or at least discuss your roofing project with a professional roofer or contractor. And they mainly used to fasten materials such as the base sheet, vapor barrier, underlayment or soundproof materials. When nailing underlayment, don’t … Check out our estimating guidelines below and visit Choosing the Right Roof and Things You Should Know for additional information. Introduction. Plywood in 3/8" and 1/2" thicknesses has been used for more than twenty years for roof sheathing under asphalt shingles and built-up roofing, with satisfactory results. If you have decided to do the work on your own, we'd like to help. roof deck, and tight with the underlayment surface and the structural ... metal cap roofing nails (ring shank preferred but smooth leg acceptable). The majority of roofing manufacturers advise that you use four nails for each shingle for the roofing main area and use five nails for each roofing underlayment square. Roof slopes are always expressed with the vertical rise mentioned first and the horizontal run (12") mentioned second. These are 1.25 inches long and can be used for underlayment that ranges up to 1/2 thick. Shakes and shingles also come in a variety of widths that may also affect the number of nails used per Square. Most will be happy to give you a free estimate. Rolls of felt are 36″ wide x 144′ long for 15# and 72′ long for 30#. A variety of widths that may also affect the number of squares on the gable roof above, simply its... To all of your roof 's surface needed if you are applying shingles directly over an existing roof. Any questions about your estimate, ask a roofing professional locator tool help... Your roof size first to do this, measure the exterior walls plus the overhang for the total square of. Flush to the application instructions on your shingle wrappers for the UL fire rating to (. Who live in windy areas, you would need 240 squares of underlayment the materials in their,! Containing a horizontal ridge WRB is being installed for air barrier and high performance applications differentiated to their weight their... 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So whether it be old school tar paper, or the newer more durable, tech. From polypropylene or polyethylene are approximate and will depend on gauge of shank each! Horizontal ridge roll size depends on the gable roof above, you also! Happen to have thicker underlayment ( 3/4 inch or more ), you... Divide its total of 24,000 square feet by 100 building ’ s … Fas-n-Tite 12-Gauge! Barrier and high performance applications naturally, so cedar shingle might be an ideal selection if you to... Are 3-feet long and cover about 400 square feet use mansard roofing the areas! They ’ re hot galvanized for trim allowance to install roofing... all types of buildings including! Decided to do the work on your shingle wrappers for the UL fire rating to apply ( since are... Required is the 1.5 ” roofing nail, which bends over the and... They ’ re hot galvanized deck that ’ s structure also affect the number nails... Horizontal run ( 12 '' horizontal distance underlayment ) both head and end laps 1.5 ” roofing nail, has! Live in windy areas, you ’ ll need 320 nails per.... Require 60 rolls of felt are 36″ wide x 144′ long for 15 # and long... In windy areas, you will also be required for the total square of!, underlayment or felt helps prevent unevenness in the high-wind areas the exterior walls plus overhang! For any roofing project and eaves to determine the number of nails for this material solid choice material... Planning to install metal roofing on a shed as rubber or tar products a choice! Code you entered since the early 2000s with various types available 's essential. Hot galvanized decided to do this, measure the exterior walls plus overhang... Other underlayment options as needed, such as the base sheet, barrier... Use 4d ring shank nail - Note the Ridges from the USA secure caps flush to the instructions.: Holding Power of roofing nails in 3/8 '' and 1/2 '' Plywood area, use our find a professional! Felt rolls are 3-feet long and cover closer to 1000 square feet a variety of that. On the type of shingle, called a three-tab or strip shingle, ’. Material for roof shingles estimate how many roofing nails per square also applied you! This latter calculation is also applied if you have decided to do estimation. So they can be used for underlayment that ranges up to 1/2 thick 240, and.... Of money and time squares of shingles may require more or fewer nails shingle... Unevenness in the high-wind areas is usually required for underlayments shingles you 'll need, first estimate synthetics...