Instructions
- Apply and Attach the Drip Edge Apply the drip edge to the eave. ...
- Overlap and Cut the Drip Edges Where the drip-edge pieces meet, overlap them by at least 2 inches. ...
- Align the Felt ...
- Roll Out the WSU ...
- Apply the WSU at a Valley ...
- Stay Parallel ...
- Apply the Felt ...
- Attach Where the Roof Meets Wall ...
How should roof underlayment be laid when installing?
InstructionsApply and Attach the Drip Edge. Apply the drip edge to the eave. ... Overlap and Cut the Drip Edges. Where the drip-edge pieces meet, overlap them by at least 2 inches. ... Align the Felt. ... Roll Out the WSU. ... Apply the WSU at a Valley. ... Stay Parallel. ... Apply the Felt. ... Attach Where the Roof Meets Wall.
Do you nail down roofing underlayment?
Underlayment that will be exposed for a while is at greater risk of tearing and so is underlayment on high-traffic roofs. For this type of installation, you'll want to stick with either cap nails, crown cap staples, or roofing nails with 3/8” heads.
How do you fasten synthetic underlayment?
2:074:08How To Install ProArmor Synthetic Roof Underlayment - YouTubeYouTubeStart of suggested clipEnd of suggested clipOn slopes to twelve to twelve. 12 all fasteners should be driven straight and flush with the surfaceMoreOn slopes to twelve to twelve. 12 all fasteners should be driven straight and flush with the surface fastened. In both the overlapping area and the filled area of Pro Armour under limit.
Can you staple roofing underlayment?
With staples or plain roofing nails, the heads can sometimes tear right through the underlayment. However, depending on local roofing and fire codes, it may be appropriate to secure synthetic underlayments with staples. They're certainly faster and easier to install!
Does roof underlayment go over the ridge?
Use a 12” (305 mm) to 18” (457 mm) strip of underlaymentto run along the ridge and overlap the new underlayment on the replacement plane at least 6” (152 mm) to 12” (305 mm). Once complete, the existing shingles must be re-nailed, hand sealed, and then the new hip cap can be installed.
Do you tape roof underlayment?
Vertical and horizontal seams of the synthetic underlayment should be sealed with a compatible adhesive or tape.
Can you lay shingle on wet synthetic underlayment?
Do not install shingles over wet underlayments… as the moisture trapped inside the underlayment may cause blistering, buckling or wrinkling of the shingles.
Will synthetic underlayment leak?
Synthetic underlayment—apart from peel-and-stick varieties, which are self-sealing—also require cap fasteners to prevent leaks whereas asphalt felt can be installed with less expensive nails or staples. But on the plus side, synthetic underlayment is much more durable than asphalt.
How many layers of roof underlayment do I need?
Two layers of underlayment are required for low-slope roofs. The first course is doubled. Above that, 36-inch wide strips are then applied to the roof in a shingle fashion, starting at the lower roof edge, and overlapping subsequent courses a minimum of 19 inches.
How do I fasten my roof underlayment?
5:389:36How To Install Roofing Underlayment - YouTubeYouTubeStart of suggested clipEnd of suggested clipBecause this paper wasn't cut off straight by the last guy that used it you just go ahead leave aMoreBecause this paper wasn't cut off straight by the last guy that used it you just go ahead leave a little bit of overhang that you can cut off. After you're going to put one nail and tack it in place.
What kind of nails do you use for roof underlayment?
Square cap nails are typically used for fastening felt underlayment and not asphalt shingles. They have a square-shaped head, instead of the more typical circular head you see on other nails. Square cap nails may have a smooth or coiled shank.
Does roofing felt go under or over flashing?
Installing roof drip edge flashing properly The best way is to install the roof drip edge only along the eaves first, then place ice-and-water barrier (in the snowbelt) or felt paper (underlayment) over the drip edge. This lets any water that gets on the roof run down the underlayment and over the drip edge.
How do you nail down a roof underlayment?
2:019:36How To Install Roofing Underlayment - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd you're gonna go ahead. And tack that. Into place roll the underlayment back on itself. So youMoreAnd you're gonna go ahead. And tack that. Into place roll the underlayment back on itself. So you can get that paper. And roll it along the roof.
How many nails do you need for underlayment?
A few nails to hold the top in place will be adequate because each top row will become a bottom row once you add another course of felt. Nail down the bottom and middle of the second course of felt with a pattern of nails every 6 to 8 inches.
Do you nail or staple roofing felt?
How to Attach Roofing Felt. Tack or fasten roofing felt using stainless steel ¼” to ½” 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. Use the nails with or without plastic caps.
How long can roof underlayment be exposed?
Roof underlays can be exposed to the elements for as long as six months, depending on the quality of the materials used. If your roof underlay is made of felt, it may degrade in as little as one week when exposed to the weather. While synthetic underlays typically last for three to six months.
Where to put flashing on a roof?
Also add flashing where the roof buts up against a wall of the house in the case of dormers or a multi-tiered roof and add flashing around any chimneys or skylight windows to protect them against the elements.
What is shingles roofing?
Shingle roofing is one of the simpler types of roofing to install on a home and it’s the kind that most homeowners can work up the courage to actually attempt . This professional guide will teach you exactly how to install roof shingles yourself. If you are considering installing new asphalt shingles on your roof, ...
How to calculate the surface area of a roof?
Multiply each section of your Roof’s Length x Roof’s Width = Roof ’s Surface Area (of that section.)
How to figure out the area of a roof?
This may be a job best left to the pros if you have any safety concerns about being on a roof. Measure the length and the width of each section of your roof and multiply the two dimensions together. This gives you the roof’s surface area of that individual section of roofing. Add all the roof’s areas together to find out exactly how much roof surface space there is overall. Do this in feet and then divide the total that you come up with by 100 to get your figure from square feet to what is known as squares. A 10 square roof is actually 1,000 square feet overall.
What is a shingle underlayment?
The purpose of the shingle underlayment is to provide an additional moisture-resistant layer to back up your roof shingles. For many years, “felt-paper” served as the leading type of shingle underlayment. As continual improvements in the building materials industry came about, synthetic underlayments emerged as the preeminent underlayment material used today. Though pricier than felt, synthetic underlayments are lighter in weight, better at lying flat (which prevents ‘wavy’ shingle installations) and offer superior water resistance – so much so that the high end synthetic underlayments can serve as temporary, short-term roof covers.
What is underlayment on a roof?
The first underlayment is a waterproof ice and water membrane that is installed along the perimeter on the roof to protect a roof from ice damming (in snow-zone areas) - read more on ice dams HERE - as well as areas where roof planes meet to form valleys, which naturally channel high water flow in wet weather and other roof penetrations such as skylights, plumbing vents, roof to wall intersections, etc. The second underlayment is a tear and water resistant material that covers the remaining areas of the roof deck and also provides a high traction walking surface that increases safety for the contractors installing the roof.
Is synthetic underlayment better than felt?
Though pricier than felt, synthetic underlayments are lighter in weight, better at lying flat (which prevents ‘wavy’ shingle installations) and offer superior water resistance – so much so that the high end synthetic underlayments can serve as temporary, short-term roof covers.
How long does it take to install felt on a roof?
When working with a helper, expect to spend several hours to install drip edge, WSU, and roofing felt on a medium-sized roof. Prep for the project by sweeping the sheathing clean of all debris and making sure there are no nails or splinters poking up.
How to seal a WSU roof?
On a steep roof, you can adhere the bottom half first, then pull off the backing from above. Avoid creases and stay aligned with the chalkline. Press down to tightly seal the WSU.
How to align felt?
Align Felt. Snap a chalkline to help you align the WSU or felt. The WSU should overhang the drip edge by 1/2 inch, so snap a line that is 35-1/2 inches above the drip edge. Check at several points to make sure the overhang is consistent; it does not have to be perfect, but you may need to realign the drip edge. See also.
How to apply felt to a ridge?
Apply felt right up to the ridge or to no more than 4 inches below it. (Rather than cutting the felt horizontally to fit, overlap it by more than 4 inches.) Apply felt on the ridge so it overlaps at least 8 inches on each side. Eliminate creases and bubbles.
Do shingles and underlayment work together?
Underlayment, flashings, and shingles all work together and must be installed in the correct order. If you lay the felt perfectly straight, you can use its lines (instead of horizontal chalklines) to align the shingles.
Do You Need Synthetic Underlayment
At Western States Metal Roofing we have a large selection of synthetic underlayment for sale. Our experts will help you choose the correct underlayment based on the specifications of your roof. In addition, we offer metal roofing and wall panels with inexpensive delivery anywhere within the United States.
How To Do Teardown And Properly Install Underlayments
When it comes to your home, if youre not doing it right, then it may not be worth doing it all.
Why Roof Underlayment Is Important
Many areas require roofing underlayment. It is essential as it works as a moisture barrier, keeping your roof safe from rain and other harsh weather.
Install The Drip Edge
Metal drip edge isnt usually required , but it gives roof edges a nice finished look, prevents shingles from curling over the edge, and keeps water from running directly down your fascia boards.
Guide To Roofing Underlayment Installation On Low Slope Roofs With Asphalt Shingles
Asphalt shingles can be used on roofs witha slope of 2:12 to 4:12 if double-coverage underlayment isused. Start with a 19-inch strip of 15 lb. asphalt-saturatedfelt along the eaves, and lap succeeding courses by19 inches as shown in Figure 2-3.
Is Roofing Felt Necessary
Roofing felt is commonly used between roof deck sheathing and roof shingles. There are applications where felt is necessary and others where it is not. Here are some reasons why felt paper is necessary:
Talk To The Roofing Experts
Roofing underlayment can help prolong your roof life, and keep your home safer and moisture-free. Preventing water infiltration is always easier than dealing with costly repairs or damage. Get answers to more of your home-project questions on Longs website and feel free to contact us for help in all your roofing upgrades.
How much overlap is needed for single ply underlayment?
By comparison, the standard overlap for single-ply underlayment is only 2 inches at horizontal laps and 4 inches at vertical laps.
What is a headlap on a roof?
The headlap is narrow band of 3-ply coverage at the top of each lap, as shown in the illustration. Most roofing tiles and shingles (as well as sidewalls shingles) are installed with a 3-ply headlap.The headlap provides for extra protection at overlaps, especially by vertical joints in roofing or underlayment.
