Our gable end wall is solid brick and is painted with a waterproof external paint. It seems that this paint is preventing the wall from breathing as we are getting damp patches on the inside of the house. The previous owners installed a tank membrane internally to some of this end wall but where the membrane stops we can now see damp patched above - it's at least 2 metres up so not rising damp?
We have been advised to strip all of the external paint off and leave the wall for at least 9 months to let it dry - does this sound right? If so, how should we go about removing the paint ourselves - its a huge area to tackle.
Also, we wanted to render the outside of the house - do we definitely need to remove the waterproof paint first? What would you recommend we render with to prevent this issue occuring again?
before removing the waterproof paint, let it dry out with the help of humidifier. This equipment is mostly used by water damage restoration company professionals. It increases the speed of drying.
If this idea is not working then i suggest you to do consult with a water damage restoration company.. They may help you out.
Hope you will be soon out of this mess.
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