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Patio Pointing Guide

A customer bought their Indian charcoal limestone paving from us in 1999.   To quote the customer, they "havn't even touched it with a brush". They don't want to lay a new patio, so came back to LSD for some advice. Unfortunately they never used a jointing compound and just left if for dirt to fall into the joints.

  • Sweep off any debris of the surface.
  • Move any tables and chairs out of the way.
  • Pressure wash down the surface and joints.
  • Wait a bit, for the water to drain away and redo.  Stubborn stains will take a bit of shifting.
  • Pour on Rompox Easy Jointing Mortar, matching the stone colour, and brush into the joints

image of a brush sweeping pointing mortar into paving stones

Here we used Rompox Easy Pointing Mortar in Grey to match the grey patio slabs. 

  • Using a hose pipe with sprinkler function wet the slabs again, this should allow the Rompox to compact more.
  • Brush more Rompox into any gaps in the joints that appear.
  • Wet again with the hose pipe sprinkler.
  • Use a pointing tool to give a nice rounded joint along the Rompox.

image of a pointing tool being used on Rompox paving stone grout

We are using the Marshalltown Pointing Tool to compress the pointing mortar here

  • Leave it and let it dry (Ignore the Oily residue, this will disappear after a few good rain showers)   Very soon we will seal this patio to try to revive the colours.  

    Tips & Advice

    What pointing mortar do you recommend

    We like the Romex Rompox Easy range - is a highly water permeable pavement fixing mortar that allows almost all quantities of rainwater to seep into the ground. Due to the open porous structure of ROMPOX - EASY, all the requirements for a water permeable and thus environmentally friendly pavement fixing mortar are fulfilled.

    Benefits to Romex:

    - Allows you to pressure/power wash your paving without worrying that the mortar will be blasted out of your joints.
    - It will not discolour.
    - The compound bonds to the stone rather than just setting in the joints in a rigid shape.
    - It is not affected by frost and ice. 

    Application

    Application time is 20 to 30 minutes at +20 degrees C (working temperature)
    At low temperatures there is slow hardening
    At high temperatures there is quick hardening
    Surfaces can be walked on after 24 hours - Minimum joint width 5mm