Sika proof any good?

[lineman]

Hi gents,

Got some retaining walls for a built up terrace patio area to re-render, the old render is blown and perished in places.
Has any of you used sika proof waterproofer before , does it plasticise the mix? Instructions doesn't say or should I use different product?

 

[Rossi46]

Sika 1 is a brilliant product. It doesn't plasticise though. If you can use it without plasticiser it's better though. Will do what it's supposed to properly. Plasticisers can weaken the mortar.

 

[lineman]

Thanks Rossi46
I take it there wouldn't be any shrinkage then when using with opc?
Does it float up good in top coat? as really need the additive in both coats to be sure it's going to stand test of time.

 

[bobski]

Sika 1 = quality

Sika proof = inferior