Concrete flags · Menston LS29

How we clean concrete flag paving in LS29

Chalky staining, moss and pigment fade on precast concrete slabs.

By the time a Menston owner rings us, the flags are usually fine underneath and the surface just needs an even lift.

We work Menston and the surrounding LS29 postcodes every week, so a Concrete flag paving job here is a scheduled call, not a special trip.

Where it goes wrong

What ruins concrete flag paving in LS29

What concrete flag paving actually is

Chemistry

Low-concentration hypochlorite biocide plus plain water through the rotary — no acid, no aggressive alkali.

Our process

Step 1

biocide pre-treat 24 hours before wash to root-kill moss

Step 2

rotary flat-surface at a fixed head height for even lift

Step 3

hand-lance the edges, thresholds and any grade changes

Step 4

kiln-dried joint refill and light final rinse

Aftercare

Sweep after storms, keep planters up on feet, re-treat biocide every 12–18 months on shaded runs.

Timing

April to October preferred; biocide needs 24 dry hours to work into the pore structure.

Typical use: side paths, rear garden patios, utility access paths, communal walkways.

Do you cover the surrounding Menston area?: Yes — same round, so most LS29 customers see us the same week.
Can concrete flags lose their colour when cleaned?: Only if the rotary sits too close or the wrong chemistry gets used — our method controls both, so Menston pigment stays intact.
Do you fill the joints on LS29 concrete paving?: Yes — kiln-dried sand refill is included on every job, not a bolt-on.
How long will a clean last?: 12–24 months in typical Menston conditions, longer on sunnier terraces.
Can you match the tone across old and new flags?: We can even out the surface tone; genuine batch differences are baked into the flag and we won't try to bleach them.