rendering on old render

[morganplastering]

need some help rendering out side of house which is concrete built with a terlyn finnish want to over coat will normal p v a be and good for bonding need some advice

 

[warriorupnorth]

No not pva, you should use sbr or use a pre-rend-primer, Welcome to the forum by the way.

 

[henry]

Welcome mate
Has it been painted also the tyrolean will be a key to render to. What kind of thickness have you got to play with.

 

[owls]

pva :-0

 

[User___removed]

ALLWAYS remove render if possible.if not coat with sbr and tyrolean again then 2 coat render.even then,the render your applying is only as good as the surface your going over.

 

[warriorupnorth]

Has any one actually read his post, it's a concrete sectional/cast property , there were quite a few thrown up in the 50's , we've done loads of em , jet wash down and prime then do what ever you want on em , but you do need that chemical bond

 

[mark ross]

Yes chemical bond to substrate, or for 100% mechanical bond .clad building with stainless steel rib lathe.. However costing this out and offering to customer usully renders this option redundant ( excuse the pun ).

 

[henry]

Is it a wimpy house warrior

 

[morganplastering]

used sbr which is what normally would use but advised by some other spreads not 2

 

[warriorupnorth]

used sbr which is what normally would use but advised by some other spreads not 2

I've dry dashed some of these in the past and they still look good today, even after 20 + years and i used SBR