Priming slurry mix for Indian stone

[markyyyyyy]

Please can you confirm what the best mix is to make a homemade priming slurry to be used on Indian sandstone prior to laying on a mortar bed

Is it something like:

1 bucket of cement mixed into 2 buckets of water?

Also, when laying the slabs is it best to use a 4:1 sharp sand:cement mix as the bedding? Should I add a little water to the mix?

Cheers

 

[lostinthelight]

Add SBR bonding to the slurry

 

[markyyyyyy]

So is 2 buckets water, 1 bucket cement correct …. How much SBR additive would I add?

 

[noseall]

So is 2 buckets water, 1 bucket cement correct …. How much SBR additive would I add?

Put some cement in a bucket - about 40mm in the bottom. Add another 80mm of water to the bucket and thrash the bjeezus out of it. Then add a third of a 5 litre bottle of SBR and thrash again. Leave the stick in the bucket because the cement will continue to settle.

 

[lostinthelight]

Put some cement in a bucket - about 40mm in the bottom. Add another 80mm of water to the bucket and thrash the bjeezus out of it. Then add a third of a 5 litre bottle of SBR and thrash again. Leave the stick in the bucket because the cement will continue to settle.

I’m to old for thrashing and prefer to use a paddle in the drill
Product Code: 34216 From TS

 

[markyyyyyy]

Ok thanks! What sort of square metre would that amount cover? Cheers

 

[noseall]

a paddle in the drill

We've got all that stuff, but its just summat else you need to take care of if it rains.

 

[noseall]

Ok thanks! What sort of square metre would that amount cover? Cheers

20m ish. Put it on with a roller and lay the slabs wet.

 

[lostinthelight]

We've got all that stuff, but its just summat else you need to take care of if it rains.

Op probably wouldn't be tackling it in the rain

 

[markyyyyyy]

20m ish. Put it on with a roller and lay the slabs wet.

I’ve just bought a 4” masonry brush to use (before reading this), will that be ok to use?

Do you mean I should wet the back of the slabs with a sponge or something before applying the slurry?

 

[lostinthelight]

Back if the slab wants to be damp but not wet so the slurry can grab on . Slurry goes off really fast so dont let it dry anywhere you dont want it particularly your glasses if worn. What ever you use to put it on, I keep it buried under the slurry so it doesn't dry off when not actually slapping it on ..its better this time of year but when the Sun is out you gotta work fast.