watter proofer

[dave222]

hello people i am not a plasterer but have picked up a bit of plastering skills over the years and iam going to render my old garden walls there only 3 foot high with slabs on top so ive got no angale beads to put up, ive got plastering sand and cement and water proofer, my mix will be 4 buckets of sand to 1 buckect cement (think that is right)
but how do you know how much water proffer to add, on the label its says 1 part water proofer to 25 parts water??
i have not got a clue what that means
thankyou very much for your help

 

[twitcher]

hmmm normally it tells you to add it in proportion to the amount of cement you're using

personally i'd do a stronger 3:1 mix for your scratch coat

 

[dave222]

oh ok i will use 3:1 mix then how much water proofer would you add to that then,thankyou for the quick reply

 

[henry]

Are you in the building trade dave

 

[dave222]

Are you in the building trade dave

groundworker long time ago the wife feed up with me diging the garden up so she got me smarting the garden walls up in stead, ha ha

 

[henry]

hard work ground works.

 

[warriorupnorth]

I wouldn't bother with the water proofer , it's not gonna be of any real use or benefit to ya , unless of course you have a dpc in your garden wall