Breaking the mould cycle.
How a Battersea landlord broke an 18-month mould cycle in her tenanted flat — and dropped the airborne spore count from 8,700 to 320 in a single day.
Survey, dry fog and antimicrobial layer · 5.5 hours on site
Airborne spores below the outdoor reference taken the same day
"I did ask him to please check and he said he hadn't seen any come back. So that was a wrap."
Lovely but not specialists.
Every landlord with mould has lived the same cycle: complaint, treatment, a quiet stretch, then the mould is back. The Battersea landlord we worked with lived it for eighteen months before getting out.
There's a particular frustration in doing everything right and still ending up where you started.
She hired a mould removal company. Lovely people. They cleared the visible patches, and the job looked sorted. Eighteen months later, the mould was back — and spreading.
Her tenant tried everything — humidifier, scrubbing, changing how he used the heating. None of it held. She began to wonder what the first company had actually treated.
She found Pure Maintenance UK. One call covered the science: 95% of mould is airborne — surface treatments don't kill what's in the air. One day on site. The technician phoned mid-job with the structural causes still feeding the condensation.
"I don't know if they were professional at mould removal — or whether they just did mould removal. There's quite a big difference."
Cold external walls and single-glazed windows held the rear-bedroom surfaces at or below dew point — feeding spore growth nightly.
The bathroom shower niche and kitchen sink perimeter were missing silicone — letting moisture wet the substrate undetected.
No trickle vents, stiff sashes, and indoor laundry drying held relative humidity above the 60% threshold the warranty requires.
After one day of treatment, the rear-bedroom airborne mould-spore count measured below the outdoor reference sample taken the same day — a 96.32% reduction against the pre-treatment baseline.
"Everything they told me they would do, they did. They did it on time. They did everything."
The process behind the transformation.
Four stages. One day on site. Independent lab evidence at both ends — before you spend, and after we leave.
Comprehensive survey and independent laboratory testing to identify the root cause — not just the visible symptoms.
Patented two-step dry-fog process, applied throughout the property to reach every surface the air touches and reduce mould contamination, then an antimicrobial film to inhibit regrowth.
Post-treatment lab testing gives written, independent evidence that airborne spores are back to outdoor-equivalent levels. No claims without numbers.
Twelve weeks after treatment, the landlord checked back in with her tenant. Clean walls. No regrowth. The mould had not returned.
What a homeowner actually wants to know.
Applied under a COSHH assessment. Once the property is ventilated the sterilant breaks down to acetic acid, water and oxygen — no lasting residue. That's why occupants and pets return the same evening.
Surface cleaning addresses only the visible 5% of mould. The dry fog treats the 95% of airborne spores that drive regrowth — which is why the first treatment held for 18 months before the mould came back, and ours has held since.
A typical whole-property treatment is completed in a single day. The Battersea flat was surveyed, treated and sealed in under six hours on site. Occupants are out for the day and back by evening — no relocation needed.
The Battersea landlord had already paid one mould-removal company. The mould came back in 18 months. Repeat callouts and spreading damage outweigh one specialist treatment backed by PMUK's 12-month limited retreatment warranty (T&Cs apply).
If you think you have a problem with mould, start with a survey.
Diagnostic moisture & mould survey. Independent US-tested treatment. Lab-verified results. 12-month limited retreatment warranty (T&Cs apply).
A diagnostic visit to identify exactly what's happening — before you spend anything on treatment.
Subject to availability and survey findings, urgent cases may be booked within 24 hours — most homes treated in a single day.
See how dry-fog works and why independent lab testing matters.