Hi we have a flat roof with chianche slabs, we have to seal around the edges every two years with a cement and resin mixture (a ferramenta tells us the correct mix) to keep it waterproof. Our neighbour who is a builder has covered his flat roof with "Scudo Therm" made by Italian Membrane, Pordenone, their phone number is 0434 614611, not sure what the costs are though, I think they have a website.
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Hi we have a flat roof with chianche slabs, we have to seal around the edges every two years with a cement and resin mixture (a ferramenta tells us the correct mix) to keep it waterproof. Our neighbour who is a builder has covered his flat roof with "Scudo Therm" made by Italian Membrane, Pordenone, their phone number is 0434 614611, not sure what the costs are though, I think they have a website.