Innsworth drives, specifically
Why Innsworth drives lose their sand — and bloom white — so young.
Innsworth is one of the youngest patches of paving in the county. The old ex-RAF married-quarters estates on the northern edge of Gloucester are now wrapped around by the vast Innsworth–Twigworth garden community, and between the two there's barely a Cotswold-stone sett or a gravel carriage drive to be found. What there is, almost everywhere you look, is block paving — thousands of monoblock drives, most of them laid within the last five to fifteen years, plus the older married-quarters drives that have been down a little longer. That single fact shapes everything about cleaning drives here, and it's why this page isn't a generic pressure-washing pitch. In Innsworth the job is almost always the same: lift the green film and the bloom, then put the lost sand back.
Here's the thing the developers don't tell you. When block paving goes in on a new estate, the kiln-dried sand is brushed into the joints once, at handover, and then forgotten. Nobody comes back to top it up. Five, ten, fifteen winters of rain, brushing and tyre scrub wash that sand steadily out, and once the joints drop below the chamfered edge of the blocks the paving starts to rock, the joints open, and weeds and moss colonise the gaps. So the classic Innsworth drive isn't filthy — it's sand-starved. It's a drive that was spotless on completion and is now five years in, joints washed hollow, with a green tinge creeping across the shaded blocks. The fix is rarely just a wash; it's a wash plus a full re-sand, which is exactly what we include as standard.
The other signature of young Innsworth paving is efflorescence — that white, chalky, cloudy bloom that drifts across new concrete blocks in their first few years. People often think the drive is staining or fading; it isn't. As the blocks cure, free lime and salts migrate up through the concrete and dry on the surface as a powdery film. It's worst on the newest estates, and it's harmless, but it makes a smart new drive look tired and patchy. We lift it with the rotary clean and the right treatment rather than reaching for acid on young blocks, and re-sand once it's done.
On top of that there's the day-to-day grime that comes with tight new-build living. The drives and shared parking courts on the garden-community plots are small and busy, so they pick up tyre scuff and the odd oil drip far more than a generous detached drive would — and both stand out badly on the light, modern block paving the developers favour. Add the shaded, densely-packed layout and the low, damp ground Innsworth sits on, and a green film takes hold on the north-facing blocks within a few years. Different age of estate, same young-paving problem: sand washed out, salts blooming, tyre marks showing. The answer is an even rotary clean and a proper re-sand — not a quick blast that strips what little sand is left.