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Mostly reiterating the points already made, but here's my success story against the War on Damp. We bought a ground floor flat 18 months ago. It's built with nicely absorbent cheap Victorian bricks. Last winter we were wiping down some parts of the walls with rags almost daily to dry them. This winter the walls were mostly dry. Tips:
- go outside when it's raining and look at where the water is going. The roofer may have missed something.
- hang as much washing as possible outside.
- wipe down condensation off windows each morning.
- windows and doors open all the time.
- breathe in inside, breathe out outside.
- go outside when it's raining and look at where the water is going. The roofer may have missed something.
CheeseWheel-
Thanks for your reply.
I never see condensation on the windows or walls which makes me worry that it is a structural issue. Logic would say it's coming from the roof but being told by the roofer that it's not has fucked that up that conclusion. I'm now thinking it must be coming from the outside wall where there is wood attached.
My builder doesn't have any suggestions so I'm tempted to either keep airing it more often and see if it changes things or alternatively get someone out to check the rendering and if not then get another roofer in.
OReilly
Anyone on here know anything about damp?
I live on the first floor (top floor) and we're currently having our living room refurbished (plastered etc.). There is slight damp at the top exterior wall above and to the right of the window in the corner. It had caused the cornicing to bow and the damp meter is showing that it's damp but not a very high reading. The builder thought it was to do with the guttering or roof but had a roofer out and he said it's all sound.
The loft is insulated but not very well and there is no felt under the tiles. I'm thinking it might be down to condensation but I'm getting conflicting info on what might be causing it. I figured it might be because the heater is below the window and where the damp is forming and that the hot air from below is meeting with the cool wall and poorly insulated loft, causing condensation to form in that top corner. Does this sound plausible or does it sound like water is penetrating from the cavity wall somehow?
I'm under time constraints because the builder wants to plaster. He's saying that if it's condensation then we should just air the room more often and it should be fine. He also said that he can remove the render and mix a waterproof cement to repair. This would seem pointless if the damp is being caused by condensation from the inside though?!
Anyone had any experience with this or can back up my theory that we just need to ventilate more? Should I insulate the loft more or will this cause less breathability?
Cheers