Stripping PVA and masonary paint for exterior wall?

Question

Here's the lowdown...I rendered my garden wall to a smooth finish, then PVA'd it, thenpainted it with Leyland exterior masonary paint.The big mistake was PVAing it! Not allowing the wall to breathethrough the paint layer and dry out after a wet spell.The result... large clusters of bubbling as parts of the PVA coatinghas laminated away from the render.The problem... getting the whole wall stripped, including areas wherebubbling hasn't occurred and the paint layer isstuck fast to the render... I have tried scraping and sanding and evena blowtorch! Next step jet wash?I'm worried that if I don't get it all off it will continue toblister, even when I've repainted!Any suggestions to me getting this all off? Some kind of PVA eatingsolvent?Many thanks,dean.

Andrew Gabriel · Accepted Answer

Ordinary PVA softens with long exposure to water.

Rednadnerb · Answer

Wallpaper steam stripper?

deano · Answer

sorry been away...So does a jet washer sound like a viable method?I can't otherwise see how I could soak the wall.Maybe connect my jet washer up to the hot water tap and the rear of myhouse (use this for washing the dog!)

deano · Answer

Yeah, you'd think it would, but I tried and it didn't...thanks for the suggestion though.

The Natural Philosopher · Answer

Pressure washer should strip. Use high power close. It will take ages. Or get a grit blasting company to strip it.

Stuart Noble · Answer

Or see the current "bitumastic paint on brick" thread

deano · Answer

That's a great link... 've contacted them to see what they have in the stripper department.Thanks.I know it will take ages for the jet washer to do the job, I willhowever consulta friend who does sandblasting and compare his price against that ofbuying thestripper and doing the graft.

Stuart Noble · Answer

IME the graft isn't too bad, you just need a *lot* of stripper

Stripping PVA and masonary paint for exterior wall?

Join the Discussion

Didn't find your answer?