pointing mix

[S a plastering]

got some pointing to do for a good customer around some York stone some of the gaps are about 25-30mm was jus wondering the best mix for this grit sand/render sand/building sand just worried about any of it cracking being so wide cheers also what ratio would be used thanks

 

[Deleted member 23452]

Is it new stone or pointing an existing wall and has to match old mortar?

If it's a full point and doesn't have to match then I would go for 4:1 yellow building sand, or fine sharp sand, and 3.5 NHL lime. If it needs to match something else then you'll have to work out the sand from that really.

Soak the wall before pointing, and keep it damp for a few days after. Drying out too quickly is what'll cause cracks rather than the joint size.

 

[S a plastering]

cheers it's on yorkstone flags mate around a swimming pool it's had a little bit done on existing which he said they just used normal sand an cement so no coulor just wondering about the ratio of mix was going to do 3-1 or is that too strong cheers

 

[raggles]

Get the sand as locally as you can if it is an old building and I mean quarry not merchants. As imagio says 4\1 would be OK. If you are raking out the joints set aside some of the old mortar dust and put a bit in each mix of will help it blend in and do not over wet the stone before during or after pointing or the lime will leach down the stone face and stain it.

 

[S a plastering]

it's York stone flags on the floor already raked out there not too concerned about the colour more bothered about the the Edith of the joints and would it be best to use render Sand or building sand or grit sand for strength

 

[markla]

for general pointing work i use 3-1-1 sand cement and lime no feb and building sand

 

[raggles]

it's York stone flags on the floor already raked out there not too concerned about the colour more bothered about the the Edith of the joints and would it be best to use render Sand or building sand or grit sand for strength

A good render sand should do the job

 

[S a plastering]

for general pointing work i use 3-1-1 sand cement and lime no feb and building sand

cheers would hydrated lime be OK or does it have to be hydraulic lime cheers

 

[S a plastering]

A good render sand should do the job

cheers for that

 

[Deleted member 23452]

cheers it's on yorkstone flags mate around a swimming pool it's had a little bit done on existing which he said they just used normal sand an cement so no coulor just wondering about the ratio of mix was going to do 3-1 or is that too strong cheers

I thought you were doing a wall, but if it's flags I'd leave the lime out altogether. 3:1 or 4:1 S&C and it won't make a blind bit of difference what sand you use other than the look when it's done, but the norm would be sharp sand.

 

[S a plastering]

I thought you were doing a wall, but if it's flags I'd leave the lime out altogether. 3:1 or 4:1 S&C and it won't make a blind bit of difference what sand you use other than the look when it's done, but the norm would be sharp sand.

sound cheers fella

 

[S a plastering]

another question I need to get this done sharpish would a semi dry mix brushed well into the joints be ok then wet up then pointed be ok

 

[markla]

cheers would hydrated lime be OK or does it have to be hydraulic lime cheers

Hydrated every time for me

 

[Deleted member 23452]

another question I need to get this done sharpish would a semi dry mix brushed well into the joints be ok then wet up then pointed be ok

Only if the pavers are bone dry, otherwise it clumps.

However, if it's a small area and it needs to be done quick, then this stuff is perfect. https://www.diy.com/departments/sika-pave-fix-plus-grout-155kg-plastic-tub/35729_BQ.prd

 

[markla]

another question I need to get this done sharpish would a semi dry mix brushed well into the joints be ok then wet up then pointed be ok

that sounds like a cowboy way of doing it you can get grout guns but you cant beat doing it by hand the finish is so much better and more importantly no come backs.

 

[Deleted member 23452]

that sounds like a cowboy way of doing it you can get grout guns but you cant beat doing it by hand the finish is so much better and more importantly no come backs.

Not if you use the proper materials for the job. That Sika product is specifically designed to be brushed into joints.

The same as some use hydrated lime where they should be using hydraulic. If they don't know the difference between them, and where they should be used.

 

[markla]

nothing wrong with hydrated lime in the mix for pointing saves using feb