Condensation and mould ventilation fixes in Cornwall

In Cornwall, condensation and mould are usually at their worst between October and March.

Our team is based in Great Barr, Birmingham, and we work throughout Cornwall, from Penzance, Bodmin, Redruth, Falmouth and St Austell. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.

Condensation & mould in Cornwall at a glance

Area: Cornwall
Towns listed: 10, largest Redruth
Postcode districts: TR7, TR8, TR17, TR18, PL22 and PL30
Price region: South West
Survey: Free survey (UK mainland)

What condensation and mould ventilation fixes involves

Mould needs that damp surface to grow. 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.

Whole-home ventilation

PIV, continuous extract or MVHR where moisture is spread through the house.

Mould treatment advice

How to clean and treat affected areas once the cause is fixed.

Survey and findings

Humidity and surface readings, existing fans flow-tested, and a written list of causes and fixes.

Guide prices in Cornwall

Condensation and mould ventilation fixes guide prices in Cornwall
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
Condensation and mould ventilation survey with written findings (per home)	£130–£235 inc VAT

Guide prices using South West rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.

Signs it is time to call us

Damp patches that dry out in summer and return in winter
Someone in the home with asthma or allergies made worse by damp
Black mould on window reveals, ceilings or behind furniture

Rules in England

In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). Damp and mould is assessed as a hazard under the Housing Health and Safety Rating System in England.

How the job runs

Survey
Find the cause
Recommend
Fix
Check back

Towns we cover in Cornwall

Questions about condensation and mould ventilation fixes in Cornwall

Is the survey free in Cornwall?

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.

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.

Is PIV or MVHR better for condensation?

For most existing homes with general condensation, PIV plus good extract fans is the most cost-effective fix. MVHR suits airtight, well-insulated homes and full renovations.

Which rules apply to ventilation in Cornwall?

In England, ventilation in new and altered homes is covered by Approved Document F of the Building Regulations. Landlords also have duties under the Housing Health and Safety Rating System, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.

Which towns in Cornwall do you cover?

All of Cornwall, including Penzance, Bodmin, Redruth, Falmouth and St Austell. If your town is not listed, send the postcode and we will confirm.

We can log humidity in your Cornwall home afterwards so you can see the improvement.