lay terracotta tiles on an interior or exterior concrete floor
1. Prepare and Clean the Concrete
you have chosen the terracotta tile that is suitable for exterior use, it is
essential to have a clean surface for a proper bond. It is recommended to clean
the concrete with warm water and a suitable product such as a trisodium
phosphate. Scrub well with a stiff brush and rinse well. If the concrete was
previously sealed you will need to grind down the surface so the tile adhesives
will bond. A scarifying machine may need to be rented to grind down the surface.
Repair any existing cracked steps or concrete
there are any cracks or surface damage ( large chips, or stairs with cracks
running through them ) these will need to be simply repaired using a crack
isolation membrane. Cut to size to ensure all damaged areas are covered, trowel
thin-set onto the concrete filling any damaged area and push the membrane onto
the thin-set smoothing it with the trowel.
3. Dry-Lay the terracotta tiles
terracotta tiles need to be washed down and allowed to completely dry either
before or after Dry-laying but before sealing.
Dry-Lay all the terracotta tiles to plan the layout patterns and
prepare for specials cuts that may be needed. Stack the tiles ahead of the
laying area so you can work for longer stretches.
Laying the terracotta tiles
a thin-set mortar following the directions on the packet. Using a trowel apply
the thin-set and the comb edge to create the grooves this will give the best
adhesion to the terracotta. Place the tiles by gently sliding into place using
10mm spacers for consistent spacing.
Note: When laying our Stoneware or Machine tiles the lines on the
underside of the tiles should follow the same direction.
Your base should already have a minimum of 1% run-off for rain
If tiling steps start with the risers. Let the mortar cure overnight
Note: Remove any mortar that may have accidentally got on the
terracotta tile surface immediately with water and sponge.
Applying the Grout
used, remove the tile spacers wherever possible before grouting.
Depending on which of our terracotta tile you have chosen the
following sealing is needed:
terracotta: Because this range is so porous sealing is needed before grouting
and can even be done before laying, use an impregnating primer or sealer, if
you are laying internally and want to darken the terracotta pre-seal with
Boiled Linseed Oil. Once grouted final seal over tile and grout lines with your
required finish following sealant instructions.
terracotta: Due to the low absorbs ion rates of our Stoneware range pre-sealing
is not necessary but in both cases remove any grout that accumulates on top of
the tiles as you work. Once grouted final seal over tile and grout lines with
your required finish following sealant instructions.
grouting is not advisable when working with terracotta. When grouting work in
approximately 1-2m2 at a time, a tip if your grouting with a fine sand and
cement mix ( which is best with terracotta tiles ) is to use a cement and
mortar gun to apply the grout deep into the joints, use a rubber float to pack
the joints finish the joints with a wet sponge or shaping tool. Clean away
excess grout off tiles using water and a sponge, rinse the sponge repeatedly.