Liquid Plastic over an old felt roof.

This old roof had problems - inadequate fall and puddling.
Stripping and re-laying the roof to the correct falls was an option the customer thought was too expensive, so it was decided that this flexible liquid roofing system would be used. The system is basically glass fibre 'GRP', but the resins have been modified especially for roofing applications like this roof. The end result is extremely satisfying, looks good and can come with guarantees of up to 25 years, depending on the layers we use to build up the covering.
By being able to lay this roofing system over the old mineral felt, the environmental impact was softened, the lifespan of the roof increased and the overall cost to the customer was reduced.

Category:

Education

Tags:

• EPDM
• flat
• roof
• new
• roofing
• London
• property
• maintenance
• asphalt
• GRP
• rubber
• mineral
• felt
• torch
• on
• Kingspan

[grac7228]

can anyone tell me is there a decent (not rufabrush or that type) liquid system that is solvent free?

[stevewater]

Yes try Kemper solvent free



[westcoatshane]

This process is very similar to the snow coat application used in the States. The problem I have seen with these types of coatings that also includes foam is breathability. When a roof has leaked for some time it has trapped moisture. If the coating is not vapor permeable, blisters will form when the moisture turns to steam on hot days. I have also seen where rubber and the solvents in an asphalt based roofing, like the one here, do not react well together. How do you solve these issues?

[kempouk]

it looks like Tor,

I'm surprised the tor rep got on the roof to inspect the job without a scaffold, Decothane insist on site visits as well so i think this job was done with out the knowledge of the manufacturer, so the guarantee would be worthless.

[royalrobson]

This 'overlay' approach is a cost effective way of preventing water ingress by leaving the existing felt membrane in tact. It eliminates the extra labour and disposal costs that are involved, which is highly appealing to customers on a budget. As long as core samples are done on various parts of the roof, to inspect for trapped water between layers and the appropriate bonding primers used, this is a perfectly acceptable approach to any domestic customer, where an aesthetic finish is irrelevant.

[westcoatshane]

@grac7228 look at our videos and see a product that has no solvents.

[jobozz]

i used this system for years its called decothane. red as base coat and a grey as a top coat. BUT.... wheres the bonding primer and metal primer, they seemed to have left that out

[kempouk]

@PhilHoh

try widowpan is triflex its just widopan with a different label on it lol,, its all the same stuff with different lables.

isnt marketing a wonderful thing.

[dozdeshabb]

you just painted over the old roof. this material is new and not entirely passed the test of time yet. however i may call it " roof repair"

[Blankmania]

This is poor work.. a new roof application should completely eliminate all puddles and the window that "nothing can be done about" should have been addressed, whether eliminating it or cutting the deck down in front of it, there is always a way to flash it correctly.. where is ur pride in workmanship?

[PhilHoh]

fieberglas? Visit TRIFLEX or KEMPER(rol)

[SCRWOOD]

what a load of shite heat gun ply build up grooves , rip the crap off and put a new roof on.