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[sieman]

Hi there, Just after some advice? I had the damp proofing done 2 years ago. in my backroom, which meant about 1-2 feet of plaster had to come of the wall from the floor upwards. Revealing the brickwork which has been re-pointed. Now i want to cover this brickwork and make it flush with the old plaster above it. I think the base must be horsehair mix and then skimmed over the top for the old plaster. It is about 1 & 1/2" thick. What should i use? doing 2 adjoining walls. Wondering what is best to keep it insulated. Thankyou. Sie.

[chris_on_tour2002]

normally on an external wall you'd use a sand/cement render mix. you could get away with bonding/undercoat plaster or even browning followed by a skim finish.

normally render is used on external walls as it's more resistant to damp but as you've had the damp proofing done then i see no reason why you couldn't use an undercoat plaster.