I live in a mid-terrace 1902 house and it has a single brick entry wall which had been injected by a previous owner. I have owned the house for 22 years and obviously the previous injected DPC has failed with age because damp is showing badly along the whole length of the interior to approx 1m high so obviously something needs to be done and I could do with some help. I have to keep wiping the black mould off the interior wall with a weak solution of bleach. I have COPD and I'm worried the damp is going to make my health worse. Can anyone offer help please?
Are you a tradesperson and able to answer this question?
hi if the damp proof cource has failed , then it will need a new one , if you have copd then i would recommend you not being their when plaster is hack off and replaster due to dust
Hi with regards to your problem is this a single brick wall and has black mould on the surface with this wall being a single brick wall it would be classed as a cold wall therefore attracting condensation I suggest you contact a QUALIFIED CERTIFIED PROPERTY CARE ASSOCIATION MEMBER to carry out a survey to establish that your ventilation is adequate the type of construction of the wall heating usage how many occupants living style and any defects present I at this stage would not consider hacking any plaster off the walls or indeed injecting another damp proof course until it is established what the actual cause is Hope this helps
Hi, I agree with the other answers. Being out of the house while the tender is taken off for your safety. Also checking if the plaster is touching the floor. You have also mentioned that the damp is over the whole wall? If the damp proof course has failed then the damp would only rise to around 1m high. So if it is over the whole wall then it would be work checking the plaster if it’s touching the floor. Ventilation (putting in a air vent. But also checking your brick joints on the external wall. Seeing if it needs repointing. This would be penetrating damp.
Rising damp kills black mould due to the salts associated with rising damp, therefore this sounds more like a condensation-related issue than a failed dpc. i would suggest you engage a good independent damp surveyor or go to someone local that you can trust and pay for a damp/condensation assessment but avoiding sales bases firms as you want the truth not to be sold rising damp treatments if not required.
