Finishing/sealing a renovated stone wall

[Misty123]

Hi all

A builder has just finished buttering in an interior wall for us, and a nice job it is too.  However our French neighbour has told us that we should now wipe the exposed stone faces with a mix of sulphuric acid and Linseed to get rid of the surface residue.  Does anyone know if this works and if not, can I buy something ready mixed from Brico to do the job?

Also we would like to seal in the wall so it shows up the colours of the stones to good effect.  Does anyone know of anything suitable for this?

Many thanks.

 

 

 

[whitey]

hi. we have done the same thing with two of our internal stone walls. we used "syntilor" vernis pierres (special stone varnish). it's very easy to apply and leaves a very slight sheen on the surface (which dust does not stick to and is easily brushed down). it's not cheap (about 45 euro's a tin) but it goes along way. the only place we could find it was castorama with all the other varnishy type stuff. good luck. mel.

[Dave&Olive]

hi

  ok water down some pva and paint it on

             Dave

[Misty123]

Whitey, we will definately get some Syntillator, we had that for floor boards.  Did you use anything to 'clean' up the stones first or did you just paint them with the varnish?

[Clair]

I'd go with DaveandOlive's suggestion of watered down PVA.

I used that on an exposed brickwall in the attic of our UK house, to stop the old cement dust from flying everywhere.

[Nick Trollope]

[quote user="Clair"]I'd go with DaveandOlive's suggestion of watered down PVA.
I used that on an exposed brickwall in the attic of our UK house, to stop the old cement dust from flying everywhere.
[/quote]

So would I. Costs a fraction of the proprietry products. & I'd spray it.

 

[Nearly Retired (I am now)]

Would watered down PVA work as well on slightly damp walls? We've got a couple of internal walls which can be a bit damp and everytime we come back to the house after a month or so away we find bits of stone on the floor. It can be a bit worrying as some of the soft stones seem to have lost about 30mm - 40mm thickness over the 30 years since the house was refurbished.

[Nick Trollope]

[quote user="Nearly Retired"]Would watered down PVA work as well on slightly damp walls? We've got a couple of internal walls which can be a bit damp and everytime we come back to the house after a month or so away we find bits of stone on the floor. It can be a bit worrying as some of the soft stones seem to have lost about 30mm - 40mm thickness over the 30 years since the house was refurbished.[/quote]

I doubt it, it is not that strong! I'd render the wall with lime.

 

[whitey]

hi, we cleaned all the stone with a soft brush and a little detergent, then rinsed it, let it all dry and applied the stone varnish..........not tried the p.v.a as suggested but i've also heard it's a cheaper option. mel.

[suzi05]

We have stone walls that drop a lot of dust. We tried PVA and it didn't work at all - ended up having to buy some very expensive specialist product that you have to spray onto the walls which seals them.

Good luck!

suzi

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