Ive had about 5 different damp proofers all quoting that every wall in the house downstairs needs damp proofing,so far there is very little signs of damp the only ones are on one of the kitchen walls but the previous owner did some diy plumbing there so i suspect it leaked and the other sign is at the bottom of the stairs. The house was also empty for 2 years as well and been told that one of the gutters has leaked in the past so im weighing up how much its needed to do every wall,ive removed most of the skirting boards and a couple of them was rotten so im thinking of going with a cavity wall membrane damp proofing for around £1300ish, is this a fair price?Should i get every wall done downstairs?

Hi,

In a word NO,

Basically i would investigate a little deeper internally and externally make sure DPC's are not bridged inside or out check for leaks and also ventilation to areas such as kitchens and bathrooms, it may well pay to purchase or borrow an dehumidifier and leave it running for a few months and then re-evaluate the situation.
In my experience damproofing is only good in basement construction, and areas above ground are usually down to dpc bridging leaks or bad air movement which can all be rectified relatively cheaply, also damproofing just locks the damp into the walls and it just moves around it, damp really is never eradicated you just, manage it.

Hope this helps

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It really does thanks for taking the time to post a reply,the dpc has been bridged so where does this leave me?id rather try the dehumidifier and better ventaltion route instead of getting a damp proofer in would it still be viable even thought its been bridged?

Hi,

Basically chop off and remove any bridging render and dig out any high soil or rubble then use the dehumidifier and try to create a better airflow with maybe additional airbricks, damp can take quite a while to be drawn out of the masonry

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thanks for your help leebwk with the walls being bridged im going to go for damp proofing but i also got a dehumidifier for the bathroom (theres no issues as of yet with damp) so hopefuly should be damp free for some time