Fitting paving slabs outside

[simonb43]

Hi All, Any advice appreciated on how to lay tiles outside onto a concrete base. All ready to go, approx 55m2. What type of fixing to use is my main concern, i assume all normal setting out rules apply. Plus, what do i use for a 'grout'. PS they will not be tiles, they will be paving stones approx 400mm x 400mm

[whitebeam]

You talking the concrete type coloured slab..

[simonb43]

Yes, that right. Sorry for the late reply, been busy. Would like some good info on this please !!

[whitebeam]

The concrete slab, is it just a tamped texture on the surface or has it been smoothed over..

How thick is the concrete slab..

[doug boardley]

I normally bed them on mortar and point with the same.

[Dave]

Pre-cast or proper stone..?..

A mortar mix with SBR added for flexibility and bond strength.. but for pointing then what are they..?

[simonb43]

Sorry, i really don't know what they are, just cheap slabs from B & Q probably, been advertised in the papers recently. Didn't think there would be that much involved in it really. Keep the replies coming, i'm going to do this !!

[GC-Terrazzo]

lay them with sand/cement and use a cement slurry for the back of them i did my slabs like that on my old house, i think most people just use sand but doing them that way is no good as they can move and sink over time.

[whitebeam]

As above sand /cement..

[gixer]

Compacted paving sand is best , as long as you have your sub-base well enough compacted they should never subside . when you have screeded your compacted paving sand take a small dish out of where the middle of each flag goes , this will allow for the bottoms of some of theflags are slightly convex . Hope this makes sense .

Gixer