Laying slabs

[ash1212002]

In the coming days I'll be laying riven slabs 600x600 on a dry sub base mix of 6:1 sharp sand and cement

Should i butt each slab up? or have a mortar joint? Is one method better than the other? Or is it down to personal preference?

If going with a mortar joint, what is the recommended spacing?

Cheers

 

[ash1212002]

Bump, can anyone kindly advise?

 

[Munroast]

I use 8mm

doubt you could ever get them levelled up if they are touching !

 

[noseall]

Bump, can anyone kindly advise?

We never lay on dry gear - ever. Always solid bed on a pliable 5:1 screed bed.

Joints will depend on the slab and the bloke laying.

Planter6

• noseall
• 22 Apr 2021

Planter4

• noseall
• 22 Apr 2021

Planter3

• noseall
• 22 Apr 2021

Planter1

• noseall
• 22 Apr 2021

 

[ash1212002]

Would you recommend a 6:1 or 10:1 mix?

Also the 'dry' mix of sharp sand and cement is any water to be added whatsoever?

I've got plenty of hardcore/rubble so will be laying that down then wacker plate it followed by the weed membrane and then lay the bed of sharp sand/cement for the slabs

 

[Alastairreid]

5:1 sharp sand/cement.
Wouldn't be putting a membrane down.
A properly consolidated sub base with a wet mix of mortar fully bedded with a minimum of 5mm joint to accommodate the grout.

 

[noseall]

Would you recommend a 6:1 or 10:1 mix?

5:1

Also the 'dry' mix of sharp sand and cement is any water to be added whatsoever?

Did you even read my post FFS....

We never lay on dry gear - ever. Always solid bed on a pliable 5:1 screed bed.