High patio

bunser · 16 Aug 2008

My house seems to have the patio rather high. The walls are rendered and the bell mouth at the bottom has a small gap between it and the patio, water seems to get into this area. Would it be ok to seal this gap off so that no water gets in to cause damage.
Thanks

r896neo · 17 Aug 2008

Its sounds more like the patio needs lowering. The bell of the render will probably be at least a few inches above your DPC and if you are getting damp there i'd say the patio is briding your DPC. Do you know what level the dpc is at?

Either way why does water gather there? The patio should fall away from the house.

bunser · 18 Aug 2008

There is no visible sign of a DPC. There are air vents around the house are lower than the patio and the patio has a bit cut out where the vents are. Someone said there may be a slate DPC or none at all. The house was built 1900.
I wondered if by sealing the bell mouth to the patio it would prevent water getting in between. The patio does run away but not by much.

Thanks

^woody^ · 19 Aug 2008

bunser said:
I wondered if by sealing the bell mouth to the patio it would prevent water getting in between. The patio does run away but not by much.

No, thats the worse thing to do. Damp will then creep up the render and wall with all the associated problems.

You need a gap, and if there is a DPC, the render should not bridge it

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High patio

bunser

r896neo

bunser

^woody^

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