Some can also be used as a high performance wet or dry surface sealant, which can be used on bitument, lead and galvanised steel. Uses include filling holes, cracks or gaps that require a complete airtight and waterproof seal but are too large to be filled with ordinary caulk. 1 Some manufacturers advise that the spray foam is breathable, some of them say nothing at all about this. When Should Foam Roof Maintenance Be Done. Many talk about problems that they have had with not being able to repair their roof when it is leaking. There are so many reasons to choose spray foam insulation including the speed of application, the high thermal values, the ability to get the same thermal value from less depth of material and the fact it lasts many years. I think we mentioned earlier that it can cut heat losses by down to 80% which is what the spray foam insulation sales people say and the big problem is when you have got a listed building and the spray foam insulation is used it damages something that simply cannot be replaced. Foamseal is used to insulate, stabilise loose tiles, fix insulating boards, repair flashings and night seal ongoing construction work. The main argument against it for many years has been that any dampness getting in or condensation being caused, lead to rotting of roof trusses and battens and purlins. The foam never gets touched and never loses R-value. If the weather is too hot the roof will set too fast leading to difficulties attaining an even surface. We saw one article where it advised that they had had to reroof in the end and the roofer had said rather than being able to save 70 to75% of the slates they were only able to save 25% of them due to the foam damage which greatly increased the cost. It makes us wonder whether it is more the fact that the water can get through the tiles and sit against the timber that causes future problems. If you have a conventional slate, concrete or clay tile roof, Protherm can be applied from inside your loft space to your greatest advantage. Dowsil 796 Neutral Silicone Sealant is a one-part, low modulus, neutral curing silicone sealant specifically developed for the sealing of PVC-U, glass, glazed surfaces and brickwork. The contents of the web site are for general information only and are not intended to be relied upon for specific or general decisions. Ames roof coating seals and combats leaks, renew old roofs, and save energy! 2 Many say it has a British Board of Agrement or BBA approval which means the same thing. In addition if the property is leasehold we get involved in dilapidations claims and you may wish to look at our dilapidations website www.DilapsHelp.com and for disputes please got to our Disputes Help site at www.DisputesHelp.com . The coating used on SPF roof is an "elastomeric" coating that is like a thin, rubberized paint. Our range comes in standard black and grey colours offering different sizes depending on the size of the job at hand. Foam roofs should be recoated every 5-10 years, depending on the quantity and quality of coating previously installed. We have heard that also the National Federation of Roofing Contractors doesn't recommend it. Fill and seal expanding foam sealant is urethane foam designed to fill large areas quickly and permanently. Closely working with leading manufacturers, we offer a selection of premium quality, cost-effective roof & gutter sealing products suitable for all kinds of construction industry purposes. Many of them comment to avoid it like the plague for a variety of reasons. Expands on contact to fill any shaped gap and hardens to form an airtight weatherproof seal. While foam roofs can last 25 years, periodic recoating will keep your roof in good repair and let you enjoy all the benefits of an effective and energy-efficient foam roof system. Spray Foam Roof Insulation & Coating Equipment Professional contractors needing heavy-duty spray foam coating equipment turn to Graco for our broad line of reliable and high-quality products. Appropriate independent professional advice should be paid for before making such a decision. It is flexible, provides a long lasting seal, resists fungal growth and … If you read the sales literature from the various spray foam companies they will say spray foam is used for several reasons: 1 The spray on foam salesman's pitch goes something along the lines of that the spray foam stops tiles and slates from slipping and strengthens the roof by holding them in place. Foamseal sprayed into the inside walls not only insulates but provides a complete moisture barrier too. Its design to be used on the roof surface, metal, wood surfaces, masonry, polyurethane foam, and asphalt. The general care that they had taken in looking after the building was evident throughout, until we extended our ladder up into the loft space (we have one of these extendable ladders that can get almost anywhere which was a fantastic invention). If you have problems with your commercial property again we would be more than happy to help whether its freehold or leasehold. We find that during the winter months we come across people that have what they believe to be dampness coming through their roof but it is in fact where the warm air from inside the property has arisen into the roof and met the coldness of the tiles or slates. 99 Usually two people are needed to recoat a foam roof. From portable to touch-up systems to high-capacity turnkey systems, we have you covered with equipment that’s designed for the demands of day-to-day commercial jobs. This condensation therefore then has nowhere to go but into the timber and in due course will cause rot. Please free phone 0800 298 5424 for a friendly chat with one of our surveyors. Roof sealants are a great way to add further waterproof protection to your roof. 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