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Damp Proofing

walls still damp 18 months after dpc was done

Anonymous user 28/02/2024 - 3.27 PM

I had damp patches on my walls, called out a big damp proof company and they told me i needed a dpc. This was done with a 25 year guarantee. Since the work has been done, I've called the company back out twice due do visable damp patches appearing on the walls. Each time they have said i'm worrying about nothing, and said the dpc is doing its job. I'm currently upgrading my kitchen, the floor is stripped, old kitchen removed and theres no skirting boards on. Theres a couple places that are visably damp, and the rest looks dry. I borrowed a damp meter to test the walls. and every wall in the house is damp. The meter screams on most walls. surely this isn't right? what steps should i take next? how do i get the company that done the dpc to admit that it hasnt worked? I have a plasterer booked in, in 9 days time. dont want to plaster if the damp will destroy the new plaster The damp is on the internal walls. please help

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3 Answers

Anonymous user

Hi, I wouldn't plaster any walls that are wet this would be a waste of time, material and money. Your best course of action is to hire an independent damp consultant who will give you a full report of your problems. You may need to approach your previous contractor for remediation works as part of their guarantee thereafter. Good Luck
Answered25 February 2017
3

Sure-Build Restoration

Rating: 4.7 out of 5
Taunton
Dear sir I presume that the property is a period property with thick walls ?.a single skin four inch brick wall following damp proof injection at floor level can take up to 18 months to fully dry out and as damp always migrates to the warmest surface this is usually internally ,we are damp proofing specialists and whilst injection with water based products at floor/Dpc level prevents future rising damp it doesn't stop contained moisture from percolating through even if retarder and salt inhibitors have been added in the render prior to finishing plaster.the correct application to apply a long term solution is to also apply a tanking slurry to a height of 1.5 metres above floor level,2 No. coats on cellers or where the exterior ground level is higher than internal floor level,the tanking slurry should also be applied 150mm onto any adjoining concrete floor,this is a long term solution,regards dale
Answered26 February 2017
3

ADR Property Maintenance

Rating: 5 out of 5
Boston
you do not say if its an external or internal wall,
Answered26 February 2017
1