SHS Hants
Southampton14 miles away
Local mould specialists for Southampton and Hampshire. Advanced techniques and non-toxic products to tackle mould at…
Condensation Control in Portsmouth — Verified Specialists
Quick answer
2 verified condensation and ventilation specialists are based within 25 miles of Portsmouth, and 4 more cover the area from further away. The nearest is SHS Hants, based in Southampton — about 14 miles from Portsmouth.
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Condensation risk this week in Portsmouth
5 nights of moderate condensation risk are forecast in the next 7 days.
- FriLow1°C
- SatLow2°C
- SunModerate7°C
- MonModerate5°C
- TueModerate5°C
- WedModerate3°C
- ThuModerate0°C
From the forecast overnight low and average humidity (Open-Meteo): colder, more humid nights make condensation on walls and windows more likely. It is a guide to the weather, not a reading of any particular home. What stops it →
Already have mould on the wall in Portsmouth? See mould removal specialists in Portsmouth →
Condensation & ventilation specialists near Portsmouth
Search all →Based near Portsmouth
Mothline presentation ltd
Southampton17 miles away
Southampton's Most Trusted Damp & Preservation Specialists No guesswork. No upselling. Just honest, survey-led damp…
- ✓ Insured
- ✓ Awaab's Law
Also cover Portsmouth
Promoted
Quoins Damp Surveyors
Covers Portsmouth · based in Bishop's Stortford, Hertfordshire90 miles away
Quoins Damp Surveyors provides independent damp and mould investigations for homeowners, buyers, landlords, letting…
- ✓ Insured
- ✓ Awaab's Law
Healthy Indoor Environments Limited t/a Better Indoors
Covers Portsmouth · based in Tadworth, Surrey46 miles away
- ✓ PCA
- ✓ CSRT
- ✓ Insured
- +1 more: Awaab's Law
KC Home Solutions ltd
Covers Portsmouth · based in Crawley Down, Crawley, West Sussex49 miles away
Established in 2023, our family-run property maintenance business brings over 20 years of industry experience to every…
- ✓ Insured
- ✓ Awaab's Law
Mould Matters Ltd
Covers Portsmouth · based in Halstead, SevenoakS, Kent64 miles away
- ✓ Insured
- ✓ Awaab's Law
Why Portsmouth’s Housing Gets Condensation
Portsmouth is the most densely populated city in the UK outside London, and its rented housing stock reflects that — tightly packed Victorian terraces with little outdoor space.
Limited cross-ventilation and indoor drying in such dense housing are recurring contributors to condensation mould, on top of the solid-wall structural damp typical of the age of stock. The council received nearly 2,000 damp and mould enquiries in 2024/25 and found around 70% were condensation-related rather than structural.
In force for social housing in England since 27 October 2025; the private rented sector extension comes under the Renters' Rights Act 2025, with no confirmed date. Read the Awaab’s Law guide → Phase 2: excess cold →
Condensation Control Near Portsmouth
Portsmouth condensation control: local answers
- How many verified condensation and ventilation specialists cover Portsmouth?
- 2 verified condensation and ventilation specialists are based within 25 miles of Portsmouth, and 4 more cover the area from further away.
- Who is the nearest verified condensation and ventilation specialist to Portsmouth?
- SHS Hants, based in Southampton, is the nearest — about 14 miles in a straight line from the centre of Portsmouth.View SHS Hants's profile →
- What kind of damp problems are common in Portsmouth?
- Portsmouth is the most densely populated city in the UK outside London, and its rented housing stock reflects that — tightly packed Victorian terraces with little outdoor space. Limited cross-ventilation and indoor drying in such dense housing are recurring contributors to condensation mould, on top of the solid-wall structural damp typical of the age of stock. The council received nearly 2,000 damp and mould enquiries in 2024/25 and found around 70% were condensation-related rather than structural.
- Where can Portsmouth tenants report damp and mould to the council?
- Tenants and landlords in Portsmouth can report unresolved damp and mould directly to the council through its damp and mould page.Source: Portsmouth council damp and mould reporting page ↗
- How many homes in Portsmouth are rented?
- In Portsmouth, 28.6% of households (about 24,600 homes) rent privately and 18% rent from a council or housing association. Across England the figures are 20.5% and 17.1%. A private tenant who cannot get damp or mould dealt with can ask Portsmouth's housing or environmental health team to inspect, as it can act on damp and mould as hazards.Source: ONS Census 2021 ↗
- What kind of homes are there in Portsmouth?
- Across Portsmouth, 43.4% of homes are terraced (England: 23%) and 34.2% are flats (England: 21.4%). 2.4% of households have no central heating (England: 1.5%) and 4.4% have fewer bedrooms than they need (England: 4.4%).Source: ONS Census 2021 ↗
- Is Portsmouth at risk of flooding?
- In Portsmouth, 3.5% of properties are in areas at medium or high risk (a 1% or greater chance in any year) of flooding from rivers or the sea (England: 1.9%) and 4.5% are at medium or high risk of surface water flooding (England: 5.9%). These are Environment Agency figures for the whole local authority (November 2026), not street-level: the GOV.UK flood service shows the risk for a single address.Source: Environment Agency flood risk, November 2026 ↗
- How much rain does Portsmouth get?
- The nearest Met Office climate station with a 1991–2020 average, Solent, is about 5 miles from Portsmouth. It recorded an average of 723 mm of rain a year over 1991–2020. That is the station's reading, not Portsmouth's own: hills and coast can change rainfall noticeably over a few miles.Source: Met Office climate averages ↗
General questions about mould and damp → read the FAQ · Condensation control costs · Landlord duties
Portsmouth in numbers: homes, flood risk and rainfall
Housing and flood figures are for the whole Portsmouth local authority area, which is wider than the built-up area alone. Rainfall is the nearest Met Office station's reading.
Homes in Portsmouth
- Households renting privately
- 28.6%
- higher than England (20.5%)
- Households in social housing
- 18%
- higher than England (17.1%)
- Terraced homes
- 43.4%
- higher than England (23%)
- Flats
- 34.2%
- higher than England (21.4%)
- No central heating
- 2.4%
- higher than England (1.5%)
- Overcrowded households
- 4.4%
- about the same as England (4.4%)
Flood risk in Portsmouth
- Properties at medium or high flood risk: rivers and sea
- 3.5%
- higher than England (1.9%)
- Properties at medium or high flood risk: surface water
- 4.5%
- lower than England (5.9%)
Rainfall near Portsmouth, 1991–2020 average
- Average rainfall a year
- 723 mm
- Solent station, about 5 miles from Portsmouth
Sources: ONS Census 2021; Environment Agency flood risk, November 2026; Met Office climate averages.
Mould and damp help near Portsmouth
If you cannot find the right firm in Portsmouth, these are the closest places we list specialists for. Distances are in a straight line from the town or borough centre.