Internal lime chimney pointing

[moody45]

Hello all,

I have a room in the centre of a Victorian brick home with a tar and slate dpc.

The room has had cabinetry removed and wall plaster with it - so half is back to brick the other half the original plaster which is solid.

The original plaster is around 13mm thick, pale and soft so I'm guessing it's a lime compound. The brick pointing is also the same.

I have rubbed out some of the pointing with my finger and also from the original plaster and tested them separately with some vinegar in a bowl and they both fizzle.

I'm guessing lime on both counts. I think.

Question is - Should a traditional lime product such as Ta-Mayr be best, or can an alternative like lime-lite renovation plaster then the high impact finish coat be suitable?

Guessing gypsum based products is a mono.

Any assistance would be grand.

Thanking you.

 

[Cubist]

If the walls concerned have no exposure to the outside world then, although a lime plaster would be best, you could use just about anything. If though the wall has a face exposed to weather outdoors then you should go for lime plasters to aid and enhance breathability.

 

[moody45]

If the walls concerned have no exposure to the outside world then, although a lime plaster would be best, you could use just about anything. If though the wall has a face exposed to weather outdoors then you should go for lime plasters to aid and enhance breathability.

Hi There
Thanks for the reply.

Room is an internal room.

The only possible exposure would be from above as if the roof stack develops a leak. The room in question is ground floor so theres a way to get through.

Any recommendations on the type of lime, and or ratios?

Cheers