Top 5 Damp Cures That Don’t Work

1. Dehumidifiers

Dehumidifiers remove water only from the immediate area and require regular emptying of the condensate. They don’t provide ventilation, changing stale air for fresh air, so can’t extract the moisture-laden air or remove the allergens and pollutants associated with damp, humid homes. They are noisy and expensive to run 24/7. The average unit costs between 2p and 7p per hour to run.

2. Anti-Mould Paint

Anti-mould paint applied to the interior walls will mask the tell-tale signs of black mould for a time but if you don’t treat the cause of condensation then the patches will soon re-appear. Similarly, Anti-damp paint applied to the house exterior is often promoted by damp-proofing companies as a cure for condensation, but the biggest cause of damp problems is inadequate ventilation. Sealing up the natural leakage points of the exterior walls will further exacerbate the problem of stale, humid air being trapped inside the home. Invest in PIV system and you’ll treat the root cause rather than masking the symptoms.

3. Extra Insulation

In your lofts and walls will keep your home warmer but any measures that stop heat escaping also trap humid air inside the home. It’s a myth that making your home warmer will prevent condensation. The better-sealed your home is, the more robust a ventilation system you’ll need to lower humidity and ensure good indoor air quality.

4. Passive Dehumidifier Vents

Passive dehumidifier vents work by allowing water vapour to pass to outside through a wall vent with a draft excluder. They come highly recommended by builders as they’re easy to fit. They are effective at maintaining a low level of background ventilation, but can’t deal with high levels of humidity or indoor air pollutants. They work by slowly diffusing air rather than extracting it, so can't tackle high moisture production from showering, bathing, cooking and drying clothes indoors. 

This strategy works best when air is regularly moved, so when doors are opened and closed. This doesn’t happen at night or when the property is unoccupied. The price for supplying and fitting a passive dehumidifier is around £300 per system. An average house would need a minimum of five vents fitted in conjunction with individual extract fans, making this a costly solution that still won’t cure condensation problems.

5. Opening Windows

Opening windows when cooking, bathing and drying clothes will help to reduce moisture levels in the immediate vicinity. But if your home is very well insulated, or indeed has a few cold spots, then opening a few windows won’t be enough to remove humidity and stop mould spores germinating. In winter, it’s often less cost-effective to open windows as heat is lost and the indoor temperature drops. Then there’s the issue of safety. At night or when you are away from home, it’s not always practical or safe to leave windows ajar.

So What is the Answer?

For properties affected by condensation dampness, the most effective solution is Positive Input Ventilation (PIV), technology invented by Nuaire over 40 years ago. The PIV process involves drawing fresh air from outside into a fan located in the loft area and gently pushing the filtered air into the home. This process is called positive pressurisation.

Moisture-laden stale air is forced out through the natural leakage points and as a result the humidity is drastically reduced and allergens are removed from the air creating a healthy indoor environment

Quiet and energy-efficient in their operation, Nuaire’s popular Drimaster Eco range of PIV systems will reduce the overall maintenance costs of a property by protecting the fabric and materials in the home. The Drimaster Eco range is extremely cost-effective at just 1 penny per day to run. Installation is quick and unobtrusive, making it ideally suited to refurbishment projects.

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