Condensation and mould ventilation fixes in Northamptonshire

We survey Northamptonshire homes for condensation with meters, not guesswork, and explain what we find.

Our team is based in Great Barr, Birmingham, and we work throughout Northamptonshire, from Rushden, Daventry, Brackley, Desborough and Northampton. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.

Condensation & mould in Northamptonshire at a glance

Area: Northamptonshire
Towns listed: 8, largest Northampton
Postcode districts: NN8, NN10, NN9, NN10, NN11 and NN13
Price region: East Midlands
Survey: Free survey (UK mainland)

How we do it

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.

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.

Whole-home ventilation

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

Guide prices in Northamptonshire

Condensation and mould ventilation fixes guide prices in Northamptonshire
Work	Guide price
New ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) (per fan)	£435–£725 inc VAT
Positive input ventilation (PIV) loft unit, supplied and fitted (per home)	£775–£1,375 inc VAT
Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan)	£340–£575 inc VAT
Condensation and mould ventilation survey with written findings (per home)	£125–£220 inc VAT

East Midlands rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.

Common reasons people call

Black mould on window reveals, ceilings or behind furniture
Water running down windows on cold mornings
Musty smell in bedrooms or wardrobes

Rules in England

In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). 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.

How the job runs

Survey
Find the cause
Recommend
Fix
Check back

Towns we cover in Northamptonshire

Questions about condensation and mould ventilation fixes in Northamptonshire

Which towns in Northamptonshire do you cover?

All of Northamptonshire, including Rushden, Daventry, Brackley, Desborough and Northampton. If your town is not listed, send the postcode and we will confirm.

What is the main cause of condensation in a house?

The main cause is moisture from everyday living, such as showers, cooking and drying clothes, that is not being extracted, combined with cold surfaces where it condenses. Poor or failed extract fans are a very common cause.

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.

Are prices different in Northamptonshire?

Our guide prices are adjusted by region. In Northamptonshire we use East Midlands rates, so new ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) is typically £435 to £725 inc VAT per fan.

Is the survey free in Northamptonshire?

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.

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