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Water damage on inside walls of semi detached house

Posted by Lee Powell, on
Possible causes of water damage to inside walls of our house. Water seems to run down the walls worse during the winter, we have purchased a de-humidifer, but we are unsure wether this is condensation. We have checked next door and they don't appear to have the same issue.
Michael Tucker

Michael Tucker

Hello Lee, Welcome to the site. Best to get an on site survey/quotation done, this is a free service to you and you will get 3 quotes. Simply post your job onto rated people's site. You are not obliged to go with any of the quotes- but ever job that's posted is paid for by the relevant tradesmen.if they contact you that means they are interested in your job. If one of them are awarded the job then great news for you both. ratedpeople.com Regards Michael
Andrew Smith

Andrew Smith

Hi, Are you covering your radiators with laundry to dry? Is there any ventilation in the rooms?
Nish Maroo

Nish Maroo

Hi, the possible cause of water coming inside is either the gutter are blocked which need to be clean or the pointing on the outside walls have got damage which need to be re-pointed. In either case please get a roofer first to check all the gutters are cleans and if he understands any thing about pointing tell him to check that for you too otherwise look for a builder, best way of searching good tradesmen is placing an advert on Rated People's main website where you can get good honest and trustworthy tradesmen with good rating. I hope you the best. Thank you. Kind regards, Nish
Chris Plastow

Chris Plastow

The first thing to establish is , it this problem is caused by humidity . 1) is there black spot mould on the wall , if yes , it is not rising dampness . 2) is the damp above 1.0m , if yes, it's not rising dampness. Even though it appears to be worse when it is raining it does not always indicate that it is rain water penetration , this may be a coincidence linked to the exterior humidity or the interior temperature . Do a test on the wall , scratch through the plaster in a small area to the render to establish how thick the plaster is . ( plaster is a soft yellowish coating over the render, which is hard) if it's more than 2mm thick , it will be hygroscopic , meaning it can absorb moisture from the atmosphere sufficiently to look like a damp problem . Let me know what the results are . Chris plastow.

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