Waterproofer / plasticiser

[Markathorpe]

Hi!
Long time lurker, first time poster.
Getting ready to have my first sand/cement render attempt (DIY) - I’ve got so much useful info from you all but have one final stupid question I can’t seem to get an answer to.

My waterproofer and plasticiser both state quantities based on the amount of cement used - eg per 25kg bag - is this as simple as it sounds, or is is per 25kg of mixed render/mortar?

Can’t quite Wrap my head around The fact a mix with more sand would therefore mean less waterproofer in the bucket overall that a much more cement based mix - stupid question, sorry!

 

[Ftp321]

Are you a CBeebies presenter or just G**

 

[Markathorpe]

Universal Studios with the wife pal to answer both at once hopefully

 

[Brimstone]

It says cement and means cement, irrespective of what mix ratio.

 

[Markathorpe]

It says cement and means cement, irrespective of what mix ratio.

Top man, thanks

 

[johniosaif]

It says cement and means cement, irrespective of what mix ratio.

Cement is a generic term , which mixed with sand is still cement .

 

[Markathorpe]

Cement is a generic term , which mixed with sand is still cement .

Ahh, that’s my point though - so if it’s say 90ml per 25kg cement, is it 90ml per 25kg of cement/sand mix, or per 25kg of actual bagged cement?

 

[TheWand]

Just buy bagged render

 

[johniosaif]

Ahh, that’s my point though - so if it’s say 90ml per 25kg cement, is it 90ml per 25kg of cement/sand mix, or per 25kg of actual bagged cement?

Bagged cement ,

 

[Markathorpe]

Just buy bagged render

Yeh, toyed with the idea but had so much sharp and cement when I decided to use that...but build a couple of retaining walls since so now out, so you’re right really - I’ll have a proper look.

 

[S a plastering]

Better off using weber ocr nice gear all additives in can get it up to 16mm thick aswell

 

[Markathorpe]

Better off using weber ocr nice gear all additives in can get it up to 16mm thick aswell

Looks like lots of options out there!

 

[Rigsby]

Get the bagged render but to answer your question it is x ml per X neat cement .

 

[tapit]

Cement is a generic term , which mixed with sand is still cement .

Bollox

 

[bobski]

Ahh, that’s my point though - so if it’s say 90ml per 25kg cement, is it 90ml per 25kg of cement/sand mix, or per 25kg of actual bagged cement?

90ml would be to a 25kg quantity of dust

So a mix like 75kg of sand to 25kg cement make sure there is 90ml to this 100kg batch