I hae a condo association with the typical orange barrel tile. In pretty good shape and they were thinking of doing minor repairs and having a rubberized coating sprayed on them. Anyone here with experience or info on those types of coatings?
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If you're talking stuff like acrylic elastomerics, we use stuff like that all the time. But we spray it on a continuous surface that doesn't have defined edges or differential expansion/contraction. When there is an edge, or a transition, it gets reinforced with mesh and other products, and even then, that will be the weak link in the system. Also needs to be properly maintained. Too many people don't apply the recommended thickness (usually 40-50 mil) and don't "remember" that it degrades with UV (like most other materials) at perhaps 1 mil a year.
Would it work on the barrel tile? Dunno, don't work with those, but that's why I wrote the part about edges, material transitions, and differential expansion.
Thanks for your reply. I guess there is another type. I've seen it on flat cement shingles. It dries like hard rubber. I guess I'll stop by his house to get the company's name and find out what the product is. I'm doing some research for this condo who wants it done, and me to act as the constuction manager and supervise the project.
i'm guessing aesthetics aren't a factor ???
carpenter in transition
Yes, aesthetics ia also a factor. I am going to sugggest they repair all tile, and replact those with multiple fractures and seal all appropriate areas including where tile abut walls and are sliding down.I pulled a few tile here and there and the substrate still looks lik new, and the place is about 20 yers old.Personally I think the rubberized coating will look lousy, and since when dry it looks rough it will catch and retain much more debris than the slick surface of the tile.Fortunately - for them and me - and at my sugggestion, they also want to hire me to create and implement, a Preventative Building Mainteneance Program (PBMP) that will also include other all common elements, and generate semi-annual inspections and written reports.
Here is a link to the manufacturer of the roof coating in question. They respond quickly to technical questions, give good advice and will provide local references for you to contact before making your decision. I do noise problem remediation and energy saving installations on loft conversions and old house restorations in ATL.
http://www.hytechsales.com/roofcoatings.html
I would be careful spraying something like that on a tile roof. As a designer, I would be worried that it would look bad, especially over time, and eventually require you to replace the tile as that stuff won't come off, but will look bad loooong before the tile is worn out. It may also cause breathability issues with your roof, but I can't be sure without spending the time to research it throughly.
I just finished a roof repair of several tile roof buildings that were between 50-70 years old (State of WA project). We took up the tiles, replaced the underlayment, cleaned off the moss, replaced the cracked tiles and the tiles that had come loose due to fastener failure (galv. wire ties on traditional barrel tiles)and it is good for another 50-70 years. At least another 30-40. After much research into the best and most modern methods, our details looked almost identical to the original as-built drawings details for assembly. My professional opinion is if you spray that on your tile you will regret it.
Look to the Roof Tile Institute at http://www.ntrma.org for guidance and details. Good luck, Roy
What roy said , plus if you want to do preventive maint. on the building scrapeing that crap off the tile to fix them will suck. Now if you want to create a nice slum building spray on roofing is the way to go, but don't fix the cracked tiles first.
Somethinfg like that is as likely to do more damage than good, byt trpping water and looking bad now - worse in a few years. I would be looking into a sealer made for masonry such a s brick chimneys and pavers. Invisible and a penetrating sealer that generally still breathes
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Sealer will not have any effect since the barrel tile have a glaze like ceramic tile. But their sides are sealed with mortar, and of course ever time deflection occurs the mortar develops a hairline (or more) crack on both sides. That I can take care of with Geocel's Proflex, but only where needed.The roof pitch is about a 4/12 so I'm not worried about standing water since there will be none.