Weymouth, Dorset
Condensation and mould ventilation fixes in Weymouth
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Weymouth and DT3, DT4 and DT5.
- From £465 inc VAT per fan
- Free survey
In Weymouth homes, black mould usually comes down to the same few causes: weak fans, loft-vented ducts and no background ventilation.
We cover Weymouth and the surrounding DT3, DT4 and DT5 postcodes as part of our work across Dorset. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
Condensation and mould fixes in Weymouth at a glance
- Town
- Weymouth, Dorset
- Postcode districts
- DT3, DT4 and DT5
- Nearby
- Portland (3 miles), Dorchester (7 miles) and Bridport (15 miles)
- Price region
- South West
- Survey
- Free survey (UK mainland)
What the work involves
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.
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.
Guide prices in Weymouth
| 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.
When to get it looked at
- Black mould on window reveals, ceilings or behind furniture
- Water running down windows on cold mornings
- Musty smell in bedrooms or wardrobes
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 Weymouth
Is the survey free in Weymouth?
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.
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.
How do I get a price for a condensation fix in Weymouth?
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 Weymouth do you work in?
All of Dorset. Near Weymouth that includes Portland, Dorchester, Bridport and Blandford Forum.
Book a condensation survey in Weymouth and get a written list of causes and fixes.
Condensation and mould fixes near Weymouth
More services in Weymouth
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Answer a few questions for a price range, or send photos and we will come back to you with a written quote.