The inspection comes first: checking for loose or rocking slabs, measuring joint width and depth, looking at drainage and surface level. Shaded Huntingdon gardens are prone to persistent algae and moss growth, and Cambridgeshire clay movement can cause slab shift and joint failure over time. The inspection confirms which of the three services, cleaning, repointing, or repair, is needed and in what order.
Pressure washing removes moss, algae, black spot, and surface dirt. It also clears out loose or degraded jointing material so the new mortar has a clean surface to bond to. Applying jointing mortar over dirty or damp joints is one of the main reasons repointing fails within a season.
Repointing uses a jointing mortar or compound brushed into the cleaned joints and finished flush with the slab surface. Loose or rocking slabs are lifted, the mortar bed beneath is rebuilt, and the slab is reset and levelled before jointing. The quote covers cleaning, repointing, and slab resetting as separate line items so the scope of each element is clear.