Stupid question time...

[beanz]

On bags of addy/grout it usually says something along the lines, 4 parts powder to 1 part water (or similar). Does that mean i can go by volume rather than weight? Say 2L of powder, to .5L of water etc?

 

[White Room]

I've never measured adhesive just mix it to when it feels right, go by volume as it says on the bag

 

[beanz]

I've never measured adhesive just mix it to when it feels right, go by volume as it says on the bag

Yeah cheers whitebeam. I guess it'll be a while before i can do it it by feel; so far every adhesive i try feels different!?! 😳

 

[sWe]

The "feel" is different between different adhesives. As such, it's good to mix according to the instructions the first few times, before you learn to recognize the correct consistency for the specific adhesive you're using. Grout is a different story. Try to mix according the instructions as much as possible, as grout tends to be more sensitive than adhesive.

And yeah. 4 parts powder to 1 part water refers to the volume, ie 4 litres of powder + 1litre of water.

Most adhesives and grouts list the density of the powder as well. 1300g/dm3 means that 1 litre powder weighs 1.3kg. 1 litre of water, generally speaking, weighs 1 kilo.

So if it says "5 parts powder to 1 part water" on a 25kg bag that says "1300g/dm3", that means 25kg powder is roughly 19.2litres (25kg/1,3kg/dm3). If you want to mix the entire bag, you add 3,8l water (19,2l powder/5parts). 19,2+3,8 = 5+1 parts. Good to know imo.

 

[beanz]

Thanks sWe, that's really useful to know.

 

[Dan]

The "feel" is different between different adhesives. As such, it's good to mix according to the instructions the first few times, before you learn to recognize the correct consistency for the specific adhesive you're using. Grout is a different story. Try to mix according the instructions as much as possible, as grout tends to be more sensitive than adhesive.

And yeah. 4 parts powder to 1 part water refers to the volume, ie 4 litres of powder + 1litre of water.

Most adhesives and grouts list the density of the powder as well. 1300g/dm3 means that 1 litre powder weighs 1.3kg. 1 litre of water, generally speaking, weighs 1 kilo.

So if it says "5 parts powder to 1 part water" on a 25kg bag that says "1300g/dm3", that means 25kg powder is roughly 19.2litres (25kg/1,3kg/dm3). If you want to mix the entire bag, you add 3,8l water (19,2l powder/5parts). 19,2+3,8 = 5+1 parts. Good to know imo.

I don't think he was expecting that sWe, well done mate, as always. 🙂

 

[sWe]

Maths is usefull ya know

I always carry a pocket calculator when out working. Good for calculating layouts, amounts, etc etc... At £4 it's a good investment, and gives you more control.

 

[beanz]

I don't think he was expecting that sWe, well done mate, as always. 🙂

You're right there!! :yikes: hehe! Didn't help too much today though, as neither of the 2 small bags of grout i used had that info on them. Doh! I'll keep the info for next time though.

I bought 2 bags of grout, as i mixed the 1st bag in direct sunlight and it went off straight away... :mad2: :lol:

Another question for ya:

On the Bal grout it said to add powder slowly to the water, but didn't mention it on the Granfix grout. I did anyway, just to be on the safe side, but was it necessary?

 

[White Room]

It saves you getting a lumpy mix

 

[beanz]

It saves you getting a lumpy mix

I did wonder, but i seem to remember reading somewhere that you can over-mix it too!?! So much to learn....... Luckily there's no rush! :8: