Calculate the exact ventilation needed for any room to reduce condensation, control humidity, and limit mould risk. Poor airflow is one of the most common causes of damp in UK homes.
Use CalculatorVentilation helps prevent future problems, but it won’t fix moisture caused by leaking masonry, high ground levels, failed render, or cold structural surfaces.
If condensation keeps returning or mould is already present, the cause needs diagnosing properly — not guessing.
Book a Damp SurveyFill in the form to see exact ventilation requirements for your room.
Proper ventilation is essential for preventing condensation and damp problems in your home.
Rigid ducting provides 30% better airflow than flexible pipes. Avoid sharp bends - each 90° bend reduces efficiency by 15%.
Install timer fans that run for 15-30 minutes after use. This ensures complete moisture removal after showers or cooking.
For duct runs over 3m, use inline fans instead of wall-mounted fans. They maintain airflow over longer distances.
Humidity-activated fans automatically turn on when moisture levels rise, providing ventilation exactly when needed.
Install trickle vents in windows for background ventilation. They provide constant airflow without drafts or heat loss.
For whole-house ventilation, consider MVHR systems. They provide fresh air while recovering heat from extracted air.
Proper ventilation prevents many damp issues, but existing problems need professional diagnosis. Condensation, rising damp, and penetrating damp all require different treatments.
Identify hidden moisture problems
Precise moisture level measurements
Clear recommendations & solutions
Our surveys cover all damp types: condensation, rising damp, penetrating damp, and ventilation-related issues.
Our experienced damp specialists provide comprehensive surveys to accurately diagnose moisture issues. Get a detailed report with actionable solutions tailored to your property.