Mortar pointing

[JOHNBOY42]

What is the best mix for pointing between flags,the old mortar is crumbling away and weeds appearing...i am going to rake it out and repoint but need a good mix .........

 

[Civbuild]

You should not use a strong mix to go between natural stone flags as this can do more harm than good when the frost comes. Mix cement lime sand ratio1: 2:9 and brush the mixture dry, into the joints.

Gordon

 

[noseall]

You should not use a strong mix to go between natural stone flags as this can do more harm than good when the frost comes. Mix cement lime sand ratio1: 2:9 and brush the mixture dry, into the joints.

Gordon

oh dear.

 

[WabbitPoo]

You should not use a strong mix to go between natural stone flags as this can do more harm than good when the frost comes. Mix cement lime sand ratio1: 2:9 and brush the mixture dry, into the joints.

Gordon

Who said he has natural stone flags?
Who said a dry mix is the way?
Who said you need lime?

 

[JOHNBOY42]

Forgot to mention it,they are just patio flags ..........what is the best mix?

 

[Thermo]

3:1 or 4:1. use a damp mix. work it well into the joints with a length of feather edge or a pointing trowel (feather edge is a lot quicker and rams it in very tight).

 

[JoshG]

Good god.
I wouldn't advise 1:2:9 at all especially as a dry mix!
I would advise pointing wet, with a mix of 1:2:1.
1 Cement, 2 Building Sand and 1 River Sand.

River sand is a key component in a pointing mix as it adds a whole lot more strength.