Penzance, Cornwall
Condensation and mould ventilation fixes in Penzance
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Penzance and TR17, TR18 and TR20.
- From £465 inc VAT per fan
- Free survey

For Penzance homes with streaming windows every morning, the fix is usually cheaper than people expect.
Customers in Penzance can get a guide price online in a couple of minutes. It uses South West rates, which is what we would charge for the same job anywhere in Cornwall. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
Condensation and mould fixes in Penzance at a glance
- Town
- Penzance, Cornwall
- Postcode districts
- TR17, TR18 and TR20
- Nearby
- Helston (12 miles), Camborne (12 miles) and Redruth (16 miles)
- Price region
- South West
- Survey
- Free survey (UK mainland)
What the work involves
Ventilation is usually the biggest part of the cure, but not the only part. Heating patterns, insulation gaps and cold bridges matter too, and some damp is not condensation at all: leaks, penetrating damp and rising damp need different trades.
Survey and findings
Humidity and surface readings, existing fans flow-tested, and a written list of causes and fixes.
Fan upgrades
Weak or loft-vented fans replaced and ducted outside, with humidity control.
Guide prices in Penzance
| Work | Guide price |
|---|---|
| New ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) (per fan) | £465–£775 inc VAT |
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £825–£1,450 inc VAT |
| Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan) | £360–£625 inc VAT |
South West rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Common reasons people call
- Musty smell in bedrooms or wardrobes
- Peeling paint or wallpaper in bathrooms
- Damp patches that dry out in summer and return in winter
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. Serious damp and mould is a hazard under the Housing Health and Safety Rating System, and social landlords now have fixed timescales under Awaab's Law.
Questions from Penzance
Do you cover Penzance and nearby?
Yes. We cover Penzance and nearby places including Helston, Camborne, Redruth and Falmouth. Send your postcode and we will confirm.
Will a dehumidifier fix condensation?
A dehumidifier helps in one room but treats the symptom. Fixing the extract in the wet rooms, and adding whole-home ventilation where needed, removes moisture before it spreads.
Is black mould dangerous?
Damp and mould can affect health, particularly for people with asthma, allergies, weak immune systems, children and older people, according to NHS and government guidance. It should be dealt with rather than lived with.
What is the price of a condensation fix in Penzance?
Guide prices for Penzance use South West rates: new ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) is typically £465 to £775 inc VAT per fan. We confirm a fixed price in writing before any work starts.
Is the survey free in Penzance?
For new installations on the UK mainland, yes. The survey is free and the quote that follows is fixed and in writing. Servicing, testing and repair visits are charged, and we confirm the cost before booking.
Get a guide price online, then we confirm the plan on a free survey in Penzance.
Condensation and mould fixes near Penzance
More services in Penzance
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