Permanently Solving Condensation & Mould
Condensation is the most common cause of mould growth in UK properties. It occurs when warm, moist air meets cold surfaces — typically in poorly ventilated rooms. The solution is not just to wipe the mould off — it is to change the air quality in the property.
PIV Units (Positive Input Ventilation)
A PIV unit is typically installed in the loft space. It gently pushes a continuous supply of filtered fresh air into the property, creating a slight positive pressure that forces out the stale, humid air through natural gaps and openings. This dramatically reduces condensation and mould growth throughout the whole property.
- Treats the whole house — not just one room
- Very low running cost — typically £15-30/year in electricity
- No ongoing maintenance required
- Installed in one visit — typically 2-3 hours
- Quiet operation
- Suitable for most house types including flats (fan-assisted models available)
DMEV Units (Decentralised Mechanical Extract Ventilation)
DMEV fans replace standard extractor fans in kitchens, bathrooms and utility rooms. Unlike standard fans that only run on pull-cord, DMEV units run continuously at a low background rate, boosting when humidity rises. They extract moisture at source before it can spread through the property.
Which Is Right for Your Property?
A free survey will determine the best solution. We will survey the property, assess the ventilation, check moisture levels and recommend the appropriate system. There is no obligation to proceed.