Fact or fiction – spray foam will damage your roof shingles and void your warranty. depending on their cond. Not stripping the old roof and sending the debris to … With an aging Asphalt shingle roof, homeowners are usually left with two choices: to tear off the shingles and replace with a new roof or to install a metal roofing system over the existing roof. Spray foam also makes working around penetrations such as chimneys and skylights particularly straightforward. But I can read! A spray-foam roof could be applied directly to the old roofing once it was prepped and cleaned up a bit. Sure, shingles and tiles are beautiful to look at, but they can be expensive and time-consuming to apply and replace. The Florida Solar Energy Center did a study a few years ago during the peak summer months in Florida – a state that gets much hotter than Michigan – measuring the temperatures of roof shingles above an attic with a radiant barrier. Because spray foam insulation applied to the underside of roof sheathing inhibits heat conduction and dispersion, homeowners may wonder whether overheated roof sheathing will degrade performance and service life of the shingles above. People used to believe insulation was a heat source, which is where this myth comes from. Many homeowners opt to seal and insulate the attic, cutting indoor heat gain in summer and heat loss during winter. People used to believe insulation was a heat source, which is where this myth comes from. Clear Roof Sealer For Shingles. You can find all of the answers to your questions, as well as some you might not have even thought of at the Learning Center on our website. Spray foam is applied directly over the existing roof making the need to fill the landfill with old, worn out shingles, tar paper, etc unnecessary. spray foam attic insulation. This is fiction and comes from the early days of insulating attics. The Advantages of Spray Foam Roofing. Markie Roofing and Siding specializes in metal roofing, standing seam, slate, rubber, stone coated steel, kassel and iron shingles, soddered copper, vinyl and wood siding and many more forms of home improvement craftsmanship. The best thing you can do is look over your shingles warranty to see if spray foam could void it. Spray Foam roofing is a two-component spray applied polyurethane roofing foam that provides insulation, waterproofing and roofing stability. This study did not go directly into the effects that spray-foam insulation has on asphalt shingles, but measurements in the field study revealed that “asphalt shingle temperatures were 21 degrees warmer than a comparable … It provides a superior R-value compared to traditional fiberglass batts (3.5 to 7 per inch for spray foam versus 2.2 per inch for fiberglass) that doesn't deteriorate over time. Roofing Services New Braunfels roofing installation, repair, and maintenance services for homes, businesses, industrial facilities and more. On the surface it sounds great; a quickie roof and good R-value. This is a form of polyurethane insulation which R-value is determined by the inches. FSEC did a literature review of the research on the need for attic … More information on this can … Will use of below-deck spray foam insulation affect my fiberglass/asphalt shingles? Insulating Your Roof Deck with Spray Foam. 4. Ask about additional services if you are uncertain of the exact service you are interested in to improve the quality of your […] Roofing Over Existing Shingles Video . CertainTeed Corporation makes a type of spray in under foam insulation so they give full warranty on their roofing shingles. Spray foam insulation is a spray-applied material that can be used on the underside of roof decks as building insulation. 3. It’s effective at preventing condensation and rodent infestation. Foam Roofing. After walking roof with owner found several places where foam has disbonded from roof. Get help with your home improvement projects. Liquid Roof Coating Over Shingles If it flies, drives or just sits on your desk and blinks, he's probably fixed it. Asphalt shingles can be laid over cedar shakes or shingles, however, this is a roofing project best left to pros. GAF has a very confusing technical bulletin, in half of the wording they say spray in foam does not void their warranty and in the other half describe what happens to shingles without proper ventilation and explain they do not cover any damage to shingles from over … Spray polyurethane foam is a valuable roofing system, as SPF Roofs last indefinitely and hold their insulation value forever. Foam has a few hundred blisters varying from about 1 in to several inches. Spray Foam – Spray foam is the most popular insulation method for the metal roof because it’s highly effective. If your roof surface is flat or has only a slight pitch, there are several benefits to using Spray Polyurethane foam.. Spray polyurethane foam roofing (SPF) — also referred to as foam roofing — is the perfect solution for protecting and insulating your roof. Unfortunately, during her research process her roofer told her the spray foam would make her shingles curl because they would overheat. This foam roofing cannot be walked over or on. It is fully capable of supporting a wide weight range. Proper ventilation must be provided to dissipate heat and humidity build-up under the roof sheathing. By Allison A. Bailes III, PhD | July 3, 2013. Spray Polyurethane Foam Roofs provide a roof system that is seamless, monolithic, and Self-flashing with a High insulation value (R-value), Strong adhesion and wind uplift resistance. Continuous free-flow ventilation is impossible It’s effective at preventing condensation and rodent infestation. Servicing Michigan's Lower Peninsula & Greater Toledo, unvented attic | That is according to data from the Spray Polyurethane Foam Alliance and National Roofing Contractors Association. Spray foam is a highly unique, fluid-applied roofing system that expands upon application 20-30 times to […] You more than likely have already heard about spray foam insulation, and why it’s so popular. Total payback of your new roof usually occurs in less than ten years through savings in heating and cooling costs. The first is the fact that a spray foam roofing system tends to shrink slightly after application. When applied correctly, an SPF-treated roof actually can hold up to 40 pounds per square inch or even higher. It rots roofs, people have told me. Spray polyurethane foam roofing (SPF) — also referred to as foam roofing — is the perfect solution for protecting and insulating your roof. … When Garry isn’t working, he’s watching soccer, eating pizza, and spending time with his family. There are two problems with applying spray foam roof over shingles. In conclusion, if you're wondering if spray-foam insulation can damage your roof, the short answer is yes, spray foam can damage your roof if it's improperly installed. The unvented system could make the temperature of your roof go up a little, but I found research that states that slight temperature change won’t hurt your shingles. Research conducted by the Florida Solar Energy Center shows that insulating the bottom of roof sheathing causes only negligible temperature increase in shingles. In an uninsulated attic, the heat passes through roof sheathing and disperses into the attic space. Spray foam has an R value of 6.6 per inch, so when a 1.5” application is sprayed down, you’ll have an R value of 9.9. Damage investigations of spray-foam insulation wood roof decks have found instances where deterioration of a wood deck has occurred due to water intrusion. We all know the challenges of traditional roofing! - Michael Schrauben. The unvented attic is indirectly conditioned space since heat and moisture transfer occurs through the top floor ceiling, particularly if the ceiling is not airtight. Also, you need to check out the wood decking to make sure it is OK. Shingle Application Directly Over Insulation Applying shingles directly over insulation is not recommended for a number of reasons. Damage investigations of spray-foam insulation wood roof decks have found instances where deterioration of a … I don't think a small channel of air circulating will overcome the loss of heat but I would want it, if just for the hot season and the effect to the roofing. Now that we’ve shown you the research and you see for yourself that your shingles won’t curl or get ruined, you might be curious about the benefits of foam insulation in your attic. SPF commercial roofing systems are often used over existing roof coverings. Privacy Policy, It was nice to work with a company that clearly takes pride in what they do and strives to deliver great customer service. The Disadvantages of Fiberglass Insulation, The Comparisons Between Rubber Mulch and Gravel, Green Building Advisor: Insulated Rooflines and Shingle Temperatures, EcoLogic Energy Solutions: The Science of Spray Foam Insulation, Florida Solar Energy Center: Literature Review of the Impact and Need for Attic Ventilation in Florida Homes, How to Put Rigid Foam Insulation on the Roof Before Putting on Shingles, Reflective Roof Insulation Vs. Fiberglass Insulation. Spray Polyurethane Foam Roofs provide a roof system that is seamless, monolithic, and Self-flashing with a High insulation value (R-value), Strong adhesion and wind uplift resistance. Why is spray foam insulation used? Image 1 of 3 Asphalt shingles on a roof with insulation at the roof deck and no ventilation are hotter than shingles on a vented attic. This is a form of polyurethane insulation which R-value is determined by the inches. ... a knowledge in the roofing industry that goes back generations that always delivers on quality that has been evolving over the years with new techniques and products that let us serve you better. A spray-foam roof could be applied directly to the old roofing once it was prepped and cleaned up a bit. Not stripping the old roof and sending the debris to the landfill was also a big green plus. Four inches of closed-cell polyurethane is a Class II water retarder, a semi-impermeable membrane … The standard SPF roofing application consists of three components, the substrate (often your roof deck), the SPF layer and the top coat. SPF roof systems can be applied directly over BUR, modified-bitumen, concrete, wood, asphalt shingles, clay tile, and metal. While we know that our product will not harm your shingles, it really comes down to each manufacturers policy. Over 25 years of knowledge and experience in top-notch roofing for home and business owners throughout Texas. Gus Stephens has written about aviation, automotive and home technology for 15 years. Roof Coating For Shingle Roofs . Golden Tips for Installing Metal Roofing Over Shingles. This question has even been confusing inside the construction industry. However, with proper installation, spray foam can and will save you money on your heating and cooling bills. 4. Which can … He has also taken building science classes at the Building College of Manchester. deterioration of insulation, wood and other roofing and construction materials. I explained to her where this misconception comes from, when people believed insulation was a heat source and were concerned about having a “hot roof.”. Our company does SPF roofing and insulation in Northern California, on both residential and commer-cial projects. After cleaning the existing roof, the SPF roof can be applied directly over asphalt, shingles, concrete, metal, wood and more. Inch for inch, it works better than traditional insulation. Sprayed-in-place insulation is… • Usually a two-part spray on foam insulation, commonly applied to wall cavities and the bottom of roof decks as a part of the building envelope’s insulation assembly. SPF roofs are installed by spraying a liquid on the existing roof and allowing it to expand into a foam. Cheapest Place To Buy Shingles. Connecticut can be a lot warmer but they are not immune to an old fashioned winter.I sure wouldn't spray foam on the under side of shingles. A spray-foam roof could be applied directly to the old roofing once it was prepped and cleaned up a bit. RetroFoam of Michigan has more than 15 years of experience insulating attics, so we’ve heard from homeowners their concerns about their shingles. Beginning with the 2006 version of the International Residential Code (IRC) and continuing with later versions, use of spray foam insulation has been recognized as a method of insulating a roof assembly when FOAM ROOFING IN PHOENIX. Spray Foam and Epoxy Coatings. I have more than 33 years of experience in the construction industry, so I can tell you from my experience that spray foam insulation isn’t going to hurt your shingles. If you’ve never heard the phrase “hot roof” I’m sure you’ve heard of an unvented attic. Both options have their benefits and drawbacks. What this study means is that you can insulate the roof deck of your home with foam insulation without any adverse effects to your shingles. 1 Strip the shingles, expose the deck, install a fully adhered membrane and go to town with rigid insulation. Beveled wood pieces called "horsefeathers" must be laid along the thick edges of the shakes to make a fairly flat surface. Where: the spray foam will damage your roof term that comes from the spray foam will your... Conklin elastomeric roof coatings are designed for flat or low slope roofing systems to tell anyone that Mama ’. 12 inches think you 'll be able to sweep it off actually good! Inc. spray foam insulation Effect on a shingle roof below-deck spray foam roof shingles. Plenty of other benefits that will save you both time and money roof and. And rely on us for high-quality roofing services all year … Enter roofing! 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