PIV and Ventilation Improvements
Mechanical ventilation is essential to expel high humidity. We supply and install advanced Positive Input Ventilation (PIV) systems and low-noise continuous mechanical extractors across Dorset.
Positive Input Ventilation works by delivering dry, filtered air from your loft down into the central hallway or landing. This establishes an unnoticeable positive atmospheric pressure that gently forces older, vapor-saturated air out of building gaps, trickle vents, or extractor vents.
We also test extraction flow rates with digital anemometers to ensure compliance with Part F of UK Building Regulations.
Frequently Asked Questions
Q: How much power does a loft PIV unit use?
PIV units are highly efficient, consuming as little as 4-9 watts, equating to approximately £5-£10 of electric power per year.