Hi all - not a plasterer but learning on my own house - hard job to get right! and im better off with sandpaper lol
- Ive got an old cottage thats a bit of a mish mash of limestone victorian brickwork and some new build and done all the renovation myself so far! - stripped back the whole place to walls including taking the roof off and rebuilding with dormas on one side.
On the old part one of the rooms is half meter thick limestone walls and there was damp in the corner so I racked out the joints and refilled with 3:1 sand and hydraulic lime nh3 flattening the wall as much as i could.
The walls took a lot of water, surprised me how porous they can be and how quick they dry out even in winter!
next was a scratch coat which I flattened as much as possible and did a final finish coat - the result in the 2 rooms that are stone looks good and similar to the haired lime putty that was there previously in its sorry state. So my question is apart from not doing 3 coat work is that the right way of working on old stone walls (internal) - ive seen some polish plasterers down the road do it in browning - that is scratch, levelling coat then finish coat but that would only work if the wall is good and dry in my opinion.
I had thought of using lime putty gauged with sand but the setting time was off putting so did it in hydraulic.
so far a little efflourescence from the damp corner but no real problems as that washed off!
another question out of curiosity is what could you do to shorten the setting of lime putty when spread - read that it could have a third of plaster paris added to improve the set.
thanks
- Ive got an old cottage thats a bit of a mish mash of limestone victorian brickwork and some new build and done all the renovation myself so far! - stripped back the whole place to walls including taking the roof off and rebuilding with dormas on one side.
On the old part one of the rooms is half meter thick limestone walls and there was damp in the corner so I racked out the joints and refilled with 3:1 sand and hydraulic lime nh3 flattening the wall as much as i could.
The walls took a lot of water, surprised me how porous they can be and how quick they dry out even in winter!
next was a scratch coat which I flattened as much as possible and did a final finish coat - the result in the 2 rooms that are stone looks good and similar to the haired lime putty that was there previously in its sorry state. So my question is apart from not doing 3 coat work is that the right way of working on old stone walls (internal) - ive seen some polish plasterers down the road do it in browning - that is scratch, levelling coat then finish coat but that would only work if the wall is good and dry in my opinion.
I had thought of using lime putty gauged with sand but the setting time was off putting so did it in hydraulic.
so far a little efflourescence from the damp corner but no real problems as that washed off!
another question out of curiosity is what could you do to shorten the setting of lime putty when spread - read that it could have a third of plaster paris added to improve the set.
thanks
