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PostPosted: Mon Sep 25, 2017 11:02 am 
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Hi everyone, I would appreciate some advice. I've just completed a self build house in North Wales. As part of the decor I left beams in the lounge and kitchen exposed and build wood panelling to one meter around the kitchen/diner walls. I used a product, Timberex Hard Wax Oil, for the finish and was very pleased with it. Unfortunately I had Building Control around for their final inspection last week and they expressed concern about this product and it's fire safety properties. The exposed joists must be capable of withstanding 30 minutes fire resistance via charring effect and the panelling must achieve at least class 1 surface spread of flame. There is nothing on the tin or on Timberex's website to clarify this so I e-mailed them but have had no response so far. The building control Officer has been very helpful throughout the build and says that if the Timberex product does not match the criteria then use of a suitable intumiscent fire resistant product over the Timberex will be ok. I would appreciate any advice on this.

Thanks
Frank


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PostPosted: Wed Sep 27, 2017 8:33 pm 
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AFAIK no generally-available lacquer or oil finish ever has fire retardant properties - in point of fact the opposite is true and many surface finishes will, in the correct circumstances, act as accellerants to a degree. If you want fire retardant finish you need to go to a product specifically made and sold as an intumescent finish, such as those made by Envirograph (who specialise in architectural fire control products). They aren't cheap and they must be applied in exactly the same regimen that the manufacturer specifies (number of coats, time between coats, etc). Their products are accepted for use in many commercial builds - not long finished installing more than 400 slatted oak ceiling panels (up to 3.2 metres long) in a public building and they were all coated with Envirograph clear lacquer - and look superb

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OK, I'm an "old school" chippie, so please don't ask me to do a bodge job - I didn't bring my horse today and in any case you don't seem to have a hitching rail!


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