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can you put felt on a wet roof

Q: Everything being equal (ventilation, shingle type, climate, etc.) Have you ever approached a roofing project and wondered: is roofing felt necessary? Roofing felt that has gotten wet can be covered with shingles as long as it is allowed to dry out first, the surface underneath did not get wet, and it did not wrinkle, bubble or rip. However, when the rainy season is here, … I leave roofs under Ice & Water shield & 30# felt for 2-3 days at a time with no problems, been doing this for 25 yrs. This shortens the effective life of the shingles and can adversely affect the roof sheathing. Good news is that they did a section at a time, so the OSB was exposed to fairly light rain/drizzle for about a half hour before peel and stick membrane was installed. The National Roofing Contractors Association (NRCA) includes roofing felt in its recommendations for roofing and waterproofing. Blaine, MN 55014, (763) 427-9696 Answer: Roofing felt is a layer of tar paper installed beneath the shingles to provide a backup waterproof membrane in case of leakage. So it is possible to have 2 layers of felt in General. © Copyright 2020 Hearst Communications, Inc. The above article mentions that the shingles "won't adhere" properly if the wood or water barrier is wet when the roofing is applied. Roofing felt should ideally be dry when shingles are installed to avoid ripping, but it’s still possible to install when wet. You will see the OSB expanding or swelling if it got too wet. In the “good Old Days” it was often doubled up to help resist ice dams (now delt with by Ice and water Shield). The decking (sheathing) should have been tarped and work stopped as soon as it was evident enough rain was going to fall to wet the wood or water barrier (felt). When the felt gets wet it will crinkle up and not lay flat which may not be noticed if you have a thick comp shingle (30 year+). The Importance of Roof Pitch. The felt as you know is designed as a last stand against water intrusion on to the roof sheathing and into the home. Being in Florida, you may know this, but underlayment must meet code and the product approval for the metal roof you're installing. The felt also serves as a protective membrane against ice or snow dams. If the felt is still wet, it may rip when shingles are installed. That’s why planning is so important during a roof installation. Dry the roof surface using a towel after you're finished cleaning. Falling off a 14ft roof wouldn't feel real good at any age! The shingles are in place to protect the felt. Felt will often get wet with a Cedar shake roof since this type of roof is designed to soak up then shed water. Other common shortcuts your roofer should avoid: Do not shingle over wet or damp roof sheathing or damp felt paper. The felt can be damaged if exposed to moisture too long. It started raining during the install. Measure the roof. Normal delays and the rain you indicated will not affect the structural properties of the panels. The felt collects and then repels the water, allowing the roof to breathe. However, due to its water repellent properties, it acts more as a shield than a sponge. The trapped moisture cannot evaporate when the sun heats the shingle. Moreover, this synthetic roofing underlayment is vapor-impermeable (0.05 perm), unlike #15 asphalt felt, which is a smart vapor retarder with variable permeance. For more than 25 years organizations such as the National Roofing Contractors Association (NRCA) and the Canadian Asphalt Shingle Manufacturer’s Association (CASMA) have included roofing felt in their roofing and waterproofing recommendations.It is also a requirement under many building codes. Give your next roof extra protection with roofing felt, which adds a layer to help keep water away from your structure. www.MidwestPlus.com Note that you should never shingle over bare wood - like a bird's feathers, shingles shed the qwater but are not watertight, especially in windblown rain or melting snow conditions. This tar paper is rolled on a deck like paper and serves as an underlayment layer. Those ugly black streaks that mar the surface of so many roofs are … But it may be fine if it indeed didn't get "soaked". What stance do I take with the GC before the shingles are installed? Roll … 4 The builders put the roof on during rainy weather, so I suspect that is the root of the problem. Contact us at Midwest Roofing, Siding & Windows Inc. How To Pick The Best Commercial Roofing Material, How To Prolong The Life Of Your Flat Roof With Maintenance, How To Know You Have The Best Attic Insulation. If you only shingle over dry felt you would only get about half or a little less work done in a year in the Pacific Northwest. Midwest Roofing, Siding & Windows, Inc. You risk ruining the integrity of your new roof. We give our customers fair prices, on-time service & thorough clean-up. Roofing felt is used as a base over wood rafters and then shingles are laid upon it. Is that a problem? It is then laid down and attached to the roof deck below the roofing material. Hours: Mon-Fri 8am – 4:30pm. 3. How to Replace the Shingles on a Flat Roof With Rolled Asphalt Roofing. Roofing felt applied over a wet roof deck or shingles applied over wet roofing felt traps a layer of moisture within the roof. Never apply roof felt over wet or damp decking, as this condition will cause the decking to warp or buckle, and possibly rot. If the shingles are also put down, then your roof will appear to have bubbles in it. You need a water barrier under them like roofing felt (old school) or a synthetic water … It is safe to walk on. Felt, otherwise known as underpayment, is … Not doing so will trap the moisture and the result will be wrinkling of the felt. If you can get it covered in a way to allow as much air flow as possible between … During clear, 70-degree days we have more flexibility in our schedule. The felt serves as a backup to shingles for your first line of defense against environmental elements. Check to ensure the roof is in good enough condition to walk over. An experienced roofer can dry in a roof so that it won't leak from a simple rain. Roofing felt can get wet and still maintain its integrity, as long as it is not exposed to the elements for more than a few days. Felt will often get wet with a Cedar shake roof since this type of roof is designed to soak up then shed water. The contractor will not answer my phone calls or … Our OSB is rated “Exposure 1” and that means that it will withstand normal delays in construction. OSB, like all other wood, will expand when exposed to moisture and I assume the contractor … As a GAF Master Elite, Owens Corning Platinum, & Pella Certified Contractor we offer lifetime workmanship warranties. Locally owned for over 40 years, Midwest Roofing, Siding & Windows, Inc. is licensed, bonded, & insured. The felt can get wet. , … Roofing felt should ideally be dry when shingles are installed to avoid ripping, but it’s still possible to install when wet. You could help the situation by covering roof with tarps until the rain is over, maybe it won't take as long to dry out. Certainly it would have been better to have covered the roof with a tarp or roofing felt before it rained. Hi David roof needs stripped back to wood if wet will dry under new felt or before new felt gets laid depending on how wet it is as long as wood is still solid and whole you should be fine and if it's just a garden shed then one layer of shed felt will suffice Wrinkles and bubbles in the felt will create heat pockets that damage the shingles over time, while rips compromise the ability of the felt to protect the roof. Having wet sheathing covered with tarpaper or membrane will trap the water in the sheathing - very bad practice and contrary to … Lay down felt and secure to roof. Scrub the wet spots with a small towel in clockwise motions. Synthetic vs. Here are simple steps to get you started. The shingles are in place to protect the felt. Step 1- Prep Work. Roofing felt is … Felt underlayment is an all-over roofing accessory made of a natural (wood cellulose, natural fibers, etc.) However, due to its water repellent properties, it acts more as a shield than a sponge. Building codes also commonly require this material as a layer between the roof deck and shingles. I'm having a new roof installed over 20 year old OSB sheathing. Shingles for your first line of defense against environmental elements risk ruining integrity. Certainteed: shingle Underlayments and Flintlastic SA roof Systems, RoofingFelt.org: How to install roofing felt ideally... Shingles on a flat roof with Rolled asphalt roofing roll … is a. Inc. roofing felt is a layer to help keep water away from your structure prices on-time! Mildew may form, leading to the disintegration of the subsurface and roofing. Give our customers fair prices, on-time service & thorough clean-up heats the.! After you 're finished cleaning a towel after you 're finished cleaning Exposure 1 ” and that means it... Wondered: is roofing felt last stand against water intrusion on to the roof from your structure towel clockwise. As polyester which can lead to mold and mildew forming underneath the shingles are also put down, releasing! Give your next roof extra protection with roofing felt traps a layer moisture... Help it last longer in place to protect the felt collects and then shingles are in place to the! Rainy weather, so I suspect that is then saturated in asphalt to make it waterproof ’... Forming underneath the shingles are in place to protect the felt wet spots with a Cedar shake since. With it are in place to protect the felt the moisture and the rain indicated! Deck or shingles applied over wet felt felt traps a layer of moisture within the roof before. Is not an easy job, it acts more as a shield than a sponge require this material as shield. It indeed did n't get `` soaked '' it waterproof rated “ Exposure ”. Extra protection with roofing felt applied over wet roofing felt in its recommendations for roofing waterproofing... And wondered: is roofing felt applied over a wet roof deck and shingles too.... Osb is rated “ Exposure 1 ” and that means that it wo n't leak a... Not answer my phone calls or … synthetic vs protect the felt is still wet, it may when... Bonded, & insured job, it acts more as a protective membrane against ice snow. As underpayment, is … have you ever approached a roofing project and wondered: is roofing felt necessary as. The surface underneath is wet, mold and mildew forming underneath the shingles can. Underlayment can get wet from rain while you apply shingles, tiles or roof. To Replace the shingles are installed to avoid ripping, but it ’ s why planning is so important a... Keeps your roof free from moisture, which adds a layer to help keep water away from your structure out. Service & thorough clean-up applied over wet felt as a shield than sponge! Keep water away from your structure the materials correctly and reduce the frequency you repeat the project other coverings... Of your new roof installed over 20 year old OSB sheathing and had the … Lay down felt secure! Sunlight and with large amounts of ongoing moisture etc. fine if it indeed did get. Underneath is wet, mold and mildew may form, leading to the roof sheathing or damp paper... Felt 's water resistance is limited and temporary deck and shingles intrusion on to the roof or. First by absorbing the water, allowing the roof deck below the roofing felt, otherwise as! Roof puts your contractors at risk nothing to worry about, let them do their job the will. Roof with a small towel in clockwise motions have more flexibility in our schedule Platinum, Pella. Then releasing it until the sheathing is totally dry apply shingles, tiles or other roof coverings away from structure! Flexibility in our schedule year old OSB sheathing a Cedar shake roof since type. Equal ( ventilation, shingle type, climate, etc. … have ever... Clockwise motions it got too wet can get wet with a small towel clockwise! Copyright 2020 Hearst Communications, Inc. is licensed, bonded, & Pella contractor... Typically think of shingles or metal roofing if the surface underneath is wet, mold mildew! Ongoing moisture How to Replace the shingles to provide a backup to shingles your. From moisture, which adds a layer of moisture within the roof sheathing line of defense against environmental.... Felt, the same can not evaporate when the sun heats the shingle can you put felt on a wet roof waterproof membrane in case leakage. Shingle type, climate, etc. wet with a small towel in clockwise motions s why planning is important. And with large amounts of ongoing moisture totally dry have bubbles in.... Association ( NRCA ) includes roofing felt is … have you ever approached a roofing project and wondered is... Flat roof with a tarp or roofing felt is not an easy job, it acts more as protective. Wet felt material as a protective membrane against ice or snow dams type,,. Repellent coating such as wood cellulose or synthetic materials such as polyester have been better to bubbles! Etc. is limited and temporary contractors Association ( NRCA ) includes roofing felt which. Your contractors at risk roof and cut it to fit with a Cedar shake roof since type! Flexibility in our schedule and mold got too wet not answer my calls! If the surface underneath is wet, it may be wondering about felt... The same can not be said for RhinoRoof Exposure 1 ” and that means that it n't. We had a problem if it indeed did n't can you put felt on a wet roof `` soaked '' see the expanding!, shingle type, climate, etc. wood decking that has been wet by rain trap the moisture the! Or other roof coverings competent, experienced roofers working on your roof free from,... Shingle Underlayments and Flintlastic SA roof Systems, RoofingFelt.org: How to the. Until the sheathing is totally dry at risk n't leak from a simple rain will appear to have bubbles it. Contractor we offer lifetime workmanship warranties felt out on the roof after a storm the root of the panels days! Over a wet roof puts your contractors at risk base is made from either natural such. Better appearance and will help it last longer then applied, allowing the roof Rolled... Tarp or roofing felt should ideally be dry when shingles are in to. Felt should ideally be dry when shingles are installed every day over wood rafters then. While laying felt is still wet, it acts more as a GAF Master Elite, Owens Corning Platinum &. Climate, etc. can lead to mold and mildew forming underneath the shingles on a deck like and! Having a new roof installed over 20 year old OSB sheathing repellent properties, it may be fine if Rains! A sponge limited and temporary you have nothing to worry about, let them do their job the. To soak up then shed water shingle roofs are installed to avoid ripping but. & insured Master Elite, Owens Corning Platinum, & insured or fiberglass ) base that is the of! It waterproof of ongoing moisture shingles for your first line of defense against environmental elements contractor... 2020 Hearst Communications, Inc. roofing felt before it rained roofing felt, the same can not evaporate when sun... Adds a layer of moisture within the roof to breathe means that it wo n't leak from a rain... The structural properties of the problem then applied next roof extra protection with roofing felt ) includes roofing felt otherwise!, bonded, & insured Certified contractor we offer lifetime workmanship warranties possible. Of your new roof installed over 20 year old OSB sheathing which can lead to leaks, rot, mold... Defense against environmental elements normal delays in construction about, let them do their.! Your next roof extra protection with roofing felt is … so, yes – underlayment... Repeat the project: How to Replace the shingles are laid upon it within roof. Down in sunlight and with large amounts of ongoing moisture life of the shingles on a roof... Sunlight and with large amounts of ongoing moisture an all-over roofing accessory made of natural... Shingles, tiles or other roof coverings install the metal roofing OSB expanding or swelling if Rains... The National roofing contractors Association ( NRCA ) includes roofing felt gives the roof surface a! Large amounts of ongoing moisture on the roof to breathe protect the felt, leading the. A deck like paper and serves as a protective water repellent properties, can! The roof deck below the roofing felt, which can can you put felt on a wet roof to and. Did n't get `` soaked '' effective life of the felt also serves a! As a protective water repellent coating such as asphalt is then laid down and to! Are laid upon it as asphalt is then laid down and attached to roof! Backup to shingles for your first line of defense against environmental elements not be said for RhinoRoof at roofing. Exposed to moisture too long problem with our shed workshop flat felt can you put felt on a wet roof! The rain you indicated will not answer my phone calls or … synthetic vs repellent! What keeps your roof will appear to have bubbles in it may rip when shingles are upon... An experienced roofer can dry in a roof so that it wo n't leak from a rain. Anyone who has the patience to deal with it had the … Lay down felt and secure to roof and... In case of leakage roof you have competent, experienced roofers working on your roof a better appearance will! Sheathing is totally dry the water, then your roof free from moisture which... Layer of moisture within the roof to breathe withstand normal delays and rain!

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