Plastering & Rendering

Penetrating damp wall repair/replastering

Anonymous user 28/02/2024 - 3.38 PM

I've got 2 damp bed room walls on the first floor in a 2 bed red brick victorian mid terrace build in the 1910. The root cause has been found, it was due to long neglected guttering system. It resulted in damp penetrating from the top ceiling to 3/4 way down the wall. I've got 3 quotes from local plasterers with rather disappointing explanation/plans of actions. All of them are either suggesting tanking, damp resin injection or membrane sealant paint. According to the very informative advice article on this site, I'm not sure either of those is the right treatment for these walls. Aren't all these treatment for rising damp? How would the bricks in the wall eventually get dry if membrane sealant paint was applied? Even with the root cause fixed, where would the moisture in the bricks go? Have I missed any tricks here?

ADR Property Maintenance

Rating: 5 out of 5

5/598 reviews

Boston

if its a solid brick building would replace the pointing externally with N.H.L. mortar allowing the building to breathe, it will dry out if its allowed to, unfortunately most of todays damp proofing is designed to cover up rather than cure the problem of dampness lime plaster internally would allow the building to breathe internally allowing it to dry naturally. unfortunately finding someone who can use these materials &understand how they all work to keep your property weather tight maybe your biggest hurdle, as most of todays tradesmen are trained in modern materials, modern materials & old buildings do not work good luck alex

Answered11 June 2018

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mjplastering

Rating: 5 out of 5

5/512 reviews

Bromyard

Hi , If there`s still dampness in the walls then you need to hack off all the affected area back to brick and leave for a week or so to dry out but this can be speeded up by using a dehumidifier to help suck the damp out of the walls. Then once dried i would use limelite renovating plaster and skim to replaster the walls Using these materials will help prevent any more penetrative damp coming through in the future but also allowing the wall to breathe. Regards Mark

Answered14 June 2018

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