Janice Anderssen
Janice (a.k.a The DIY Diva) has been writing décor and DIY articles for the past 6 years. Read more
Recent Questions
QUESTION
The paint of the interior wall of my lounge, just on one side at the lower half, is blistering and peeling (and the plaster underneath is 'crumbly') - I'm assuming it's due to the damp.
ANSWER
The problem could be caused by deterioration on the DPC (damp-proofing course), which could result in ongoing problems. It could also be that the outside level is higher than the DPC on the exterior in that particular section.
I would suggest that you remove as much paint and crumbly plaster as you can. Then use a product such as Coprox to apply to the substrate surface before applying new mortar and repainting.
If the problem does come back you may have to remove a larger area and treat with Coprox. I've used this product myself so I know that it works extremely well - even after 5 years.
For more information on damp, moisture problems and re-applying mortar to walls, visit: www.Home-Dzine.co.za - DIY and Maintenance.