Window sills

[chowbasa]

What can I use to level out the surface of old stone window sills.
They have already been painted so its something that sets like ---- and can be overpainted, but gives me a smooth finish, somthing like car body filler comes to mind. I used external polyfilla but the frost got to it.
Any Ideas

 

[gcol]

Can't you use sand and cement?

 

[confidentincompetent]

What can I use to level out the surface of old stone window sills.
They have already been painted so its something that sets like ---- and can be overpainted, but gives me a smooth finish, somthing like car body filler comes to mind. I used external polyfilla but the frost got to it.
Any Ideas

Had something similar,(stone in this case) the cill's were pitted, flaking and unsightly. Mortar would have been too thin in this case soo I did use body filler to level off (david's isopon) it sands easy. Best to give it a coat of dulux ultra grip primer then two coats of masonry paint or whatever finish your after.
Good luck.

 

[Zampa]

Exterior polyfilla is good for some of that sort of thing to...but dont leave it proud its hard to sand.

 

[skybluescooby]

Look for some fibre car body filler, mix in some yellow building sand, about 30% then skim the area you wish to repair, leave to dry then sand off with an orbital, the sand granules will fall out in places when sanded and will give the stone look rather than the smooth look when painted