Laying Lawn Edger Blocks

[sergeantash]

Hi all,

I want to edge my lawn by laying some paving blocks end to end - I am wondering if I could do this by digging a narrow trench for the width of the blocks but deeper than required, then fill with post-crete and potentially add a little sand into the mix to stiffen it up?

 

[leeco]

Why not use concrete and making a dryish mix.

 

[sergeantash]

Thanks Lecco, just after posting this, I came to the same conclusion

What mix ratio would you use? The depth under the paving will be a few inches, not particularly substantial but then these aren't structural or required to be weight bearing.

Also, in terms of grouting inbetween, what would you use and how?

 

[leeco]

When I mix concrete I use a strong mix of 2 part river sand 2 part 10mm pea gravel 1 part cement and just add a little water and it should be a good stiff mix.

joint it up in between the blocks and also lay the blocks on mortar that is 4 parts building sand 1 part cement.

 

[sergeantash]

When I mix concrete I use a strong mix of 2 part river sand 2 part 10mm pea gravel 1 part cement and just add a little water and it should be a good stiff mix.

joint it up in between the blocks and also lay the blocks on mortar that is 4 parts building sand 1 part cement.

Thanks dude, that's my weekend project sorted