A plain-English local guide for Great Chart homes (TN23), written to help you diagnose the cause before you spend money.
Great Chart has two kinds of home: old ragstone and listed cottages along the village street, and modern houses on the Singleton development. Old walls need to breathe, so do not seal them. Newer homes are airtight and trap moisture. A loft-mounted Dryzen system may suit condensation in an owner-occupied home with a loft, but not a leak, and not a rental unless the landlord agrees.
Great Chart sits in the parish of Great Chart with Singleton, in the TN23 postcode district on the western side of Ashford. The village street is a conservation area where most of the properties are listed, and many cottages are built of Kent ragstone. The Singleton housing development, in the same parish, is modern.
Thick stone walls and lime-based mortar were built to take on moisture and let it out again. Modern cement renders, plastic paints and impermeable membranes can trap it, and Historic England warns that the wrong treatments risk trapping moisture in traditional fabric.
If your cottage is listed, speak to the council before altering the building, including fitting equipment that needs holes through walls or ceilings.
These are tight, well-insulated houses, so the moisture from daily life stays in unless it is extracted. Mould on bedroom walls and wet window sills in January are common first signs.
The cure here is usually ventilation, extraction and good heating habits, with air treatment as the next step if those are not enough.
Dryzen suits owner-occupied homes with a loft, because the unit is mounted there. It is not suitable for rental properties unless the landlord authorises the changes. In a historic cottage, the survey also needs to consider whether the loft space and the routing of ductwork to the central area or stairway are practical. We will tell you honestly if they are not.
In a stone cottage a hygrometer is a gentle way to see how the building is behaving without touching the fabric. Around 50 to 55 percent is a sensible indoor level, and it helps stop the conditions mould and dust mites need. For the full evidence, calculator and printable cheat sheet, see The Healthy Home Humidity Guide.
Listed building rules apply to changes that affect the character of the building. Ask the council's conservation team before you commit to anything.
Thick stone walls hold moisture and release it slowly. Check gutters, ground levels and old repairs with cement first, since these are the usual causes.
No. Newer homes mostly suffer from condensation in airtight rooms, while old stone cottages suffer more from moisture trapped in the walls.
Roughly 50 to 55 percent relative humidity is a sensible target, within the 40 to 60 percent band commonly suggested. Sustained readings above about 60 to 65 percent favour mould and dust mites. A dehumidifier does not kill mould, bed bugs or fleas, it helps stop the conditions they depend on. See our healthy humidity guide.
Sources: Great Chart with Singleton, Wikipedia; Historic England: Insulating walls in historic buildings; GOV.UK: Understanding and addressing the health risks of damp and mould in the home