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New urgler : Vivek.M - from Bangalore, India.
In article , "JennyC" writes: | "Vivek.M" wrote in message | oups.com... | Hey Jen, neat site !! How do you prevent dampness in the roof ? | | It was meant to be a terrace when built. It's concrete and I just added pots | and gravel :~)) Designing flat roofs for such use is the key. | Have you given it a incline | | No. Any excess water runs away through drain[pipes at the corners. The normal problem with those is bowing in the centre, forming a semi-permanent lake - see above and below! | won't the plants slow down evaporation of water from in-between the gravel? | | Ys :~)) I have a theory that the gravel keeps the roof damp and therefore | make the lead coping dry out less and therefore keeps the roof in better | condition. Yes. The normal reason for leaks in lead is that it cracks after the expansion and contraction due to extremes of temperature. | And how did you figure out the load bearing capacity off the roof - | structural engineer? | | I got in touch with the architect and the builder. It's 150 kilos per square | meter. My original plan was to have a shallow pond with the water being | pumped round, but that was too heavy :~(( That's about half standard office loading. Anything designed to have another story (in the UK!) will be that or higher. Roofs not so designed may not be. Regards, Nick Maclaren. |
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