Chichester · PO19 / PO20
Biocide Treatment for Chichester properties
Chichester sits under Chichester District Council, in a cathedral city pocket of West Sussex where undefined shows up on almost every roof we survey. Biocide is applied as a soft-wash spray across every pitch, saturating the tile surface so spores are killed at the root.
Why Chichester roofs need biocide treatment done carefully
Chichester sits under Chichester District Council, in a cathedral city pocket of West Sussex where undefined shows up on almost every roof we survey. Biocide is applied as a soft-wash spray across every pitch, saturating the tile surface so spores are killed at the root. If your property is inside the PO19 area — from streets near the Cross out to the edges bordering Havant — biocide treatment done properly means matching the technique to the tile, not throwing the same recipe at every job.
Who we work for in Chichester
homeowners protecting a recent clean
Typically Georgian city-centre townhouses inside PO19.
landlords wanting a low-maintenance roof between tenancies
Often managing multiple properties around the Cross.
commercial property managers
Regular seasonal work across the Chichester District area.
Our process in Chichester
- 1
Biocide is applied as a soft-wash spray across every pitch, saturating the tile surface so spores are killed at the root.
- 2
We time treatment for a dry weather window so the biocide has hours on the tile before any rain washes it off.
- 3
Elevations under heavy tree shade get a second pass — that's where regrowth always starts first.
- 4
We don't cheat by watering biocide down; the strength we quote is the strength we apply.
Products & kit we use
Matched to the tile stock you actually get in PO19 and PO20 — Georgian city-centre townhouses and Victorian and Edwardian terraces.
Why Chichester owners pick us
- Kills algae and lichen at the root
- Slows regrowth for three to five years
- Applied at full strength, no dilution tricks
- Ideal add-on after a manual clean
- £5,000,000 public liability public liability — no surprises on Chichester jobs.
Nearby areas we also cover
Chichester is on our regular biocide treatment route, so we cover these surrounding areas on the same week:
Chichester biocide treatment FAQs
How often should biocide be reapplied — is that the same in Chichester?
Every three to five years is normal, sooner if your property is under heavy tree cover or close to the coast. In Chichester specifically, the city sits close to chichester harbour so coastal salt-laden air accelerates algae and lichen growth, so we plan the visit around that.
Will the roof look different straight away — is that the same in Chichester?
No — biocide kills algae and lichen at the root, and the dead growth then weathers off over the following months, gradually revealing clean tile. In Chichester specifically, the city sits close to chichester harbour so coastal salt-laden air accelerates algae and lichen growth, so we plan the visit around that.
Do I need to clean the roof first — is that the same in Chichester?
For heavy moss and lichen, yes — biocide works best on a physically clean surface, so we usually pair it with a scrape-and-clean visit. In Chichester specifically, the city sits close to chichester harbour so coastal salt-laden air accelerates algae and lichen growth, so we plan the visit around that.
Do you cover the whole of Chichester and the PO19 / PO20 postcode?
Yes — we cover every part of Chichester, from streets close to Chichester Cathedral out to the edges bordering Havant. If you're inside PO19 or PO20, we'll be there.
Do you also work in nearby areas like Havant and Emsworth?
Yes — Havant (about 8 miles away), Emsworth (about 8 miles away), Bognor Regis (about 7 miles away) are all part of the same regular route, so we can often combine visits with neighbours on the same street.
In short — Biocide Treatment in Chichester
If you've read this far and you're still on the fence, the short version is this: Chichester roofs sit in a cathedral city setting where the city sits close to chichester harbour so coastal salt-laden air accelerates algae and lichen growth. A well-timed biocide treatment visit resets the clock and protects everything underneath the tiles.