0800 088 6341
Ventilation Contractors

Dorking, Surrey

Condensation and mould ventilation fixes in Dorking

We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Dorking and KT23, RH3 and RH4.

  • From £490 inc VAT per fan
  • Free survey
Condensation running down a window with mould on the reveal

For tenants, landlords and homeowners in Dorking, the common question is why the mould keeps coming back.

Dorking is about 113 miles from our base in Great Barr, Birmingham. We book Dorking visits by appointment and confirm the date in writing. Surveys for new installations are free on the UK mainland, with a written quote afterwards.

Condensation and mould fixes in Dorking at a glance

Town
Dorking, Surrey
Postcode districts
KT23, RH3 and RH4
Nearby
Great Bookham (4 miles), Leatherhead (4 miles) and Ashtead (6 miles)
Price region
South East
Survey
Free survey (UK mainland)

How we approach condensation and mould fixes in Dorking

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. We tell you if that is what we find rather than selling a fan that will not help.

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 Dorking

Condensation and mould ventilation fixes guide prices in Dorking
WorkGuide price
Condensation and mould ventilation survey with written findings (per home)£140–£250 inc VAT
New ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) (per fan)£490–£825 inc VAT
Positive input ventilation (PIV) loft unit, supplied and fitted (per home)£875–£1,525 inc VAT

These ranges use our South East rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.

When to get it looked at

  • 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 that apply 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.

Questions from Dorking

Is the survey free in Dorking?

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.

How much does a condensation survey cost?

A ventilation survey with written findings costs £125 to £225 including VAT. If we are surveying for an installation we quote for, the survey is free.

Can you tell if it is rising damp?

We can tell you when the pattern does not look like condensation, such as a tide mark low on a wall or damp that appears after rain, and point you to the right specialist.

How do I get a price for a condensation fix in Dorking?

Use the guide price tool, the form on this page, live chat, WhatsApp or call 0800 088 6341. A postcode and a couple of photos help us give you a useful answer first time.

What area around Dorking do you work in?

All of Surrey. Near Dorking that includes Great Bookham, Leatherhead, Ashtead and Reigate.

Book a condensation survey in Dorking and get a written list of causes and fixes.

Condensation and mould fixes near Dorking

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