Passyfier® 230 - Sleeved Dehumidifier Vent - Rustic/Condensation Control

Product Information

Condensation is a complex subject, primarily ventilation is the answer but this can be problematic in the cold eg during winter. There are lots of opinions on prevention but as a fully trained and qualified surveyor I can confirm that every property is different. The Passyfier Core 140 provides an opening on a section of wall normal to the airflow direction with an effective area well in excess of the minimum requirement. Airflow through the opening is controlled automatically by the intervening mineral wool slab and thereby avoids undue draughts. https://www.insulationsuperstore.co.uk/product/felt-lap-vent.html?msclkid=90848a0451d111343a62e9a446445ea3&utm_source=bing&utm_medium=cpc&utm_campaign=%5BAll%20Products%5D%20%5BCatch%20All%5D%20%5B14.02.19%20RL%5D%20%5BLP%5D%20PLA&utm_term=4579465931580105&utm_content=All%20Products The external diameter of the tube is 104mm so the core should be cut larger eg. 4.25” (107mm). Permagard - Condensation Control Experts

escapes by diffusion through Passyfier Vents, which have been tested by ADAS for airflow rate versus applied With the airtightness of newer properties and the new building regulations where new properties must pass an air tightness pressure test, extractor fans may not be suitable, they can create a negative pressure which stops them working effectively. PPU's or positive pressure units are great in summer but in winter they are forcing minus degree air into your home, this can result in freezing hall landing areas. Tip: Apply a bead of sealant around the perimeter of the opening to ensure a water-tight installation. In my experience, mechanical extraction to the loft space would have little effect or benefit. You should focus on the following:This reduces the influx of cold air from the outside, preventing excessive humidity and minimizing the chances of draughts. Use the Passyfier Sleeved Vent Kit where ever practical to maximise the transmission of water vapour. For ventilation in smaller areas such as cupboards, wardrobes or box rooms, see the Passyfier 75AB Sleeved Vent. Our Passive Ventsare a form of natural ventilation and work on this scientific principle. When the room temperature and humidity are greater internally than externally, moist air will ventilate outside the building due to vapour air differences. This pressure-driven ventilation reduces condensation and helps prevent mould growth. Use the Passyfier Sleeved Vent Kit wherever practical to maximise the transmission of water vapour.

However, it will be necessary to install two Passyfier Core-140 Vents to achieve almost the same (albeit slightly more) water vapour transmission as one Passyfier Sleeved-230 Wall Vent.Kill any mould that exists on the floor, wall and ceiling surfaces with a good quality fungicidal wash before redecorating (See our Mould Eradication Range). Versatility: Passyfier vents come in various sizes, making them suitable for installation in habitable rooms such as bedrooms and living rooms. Passyfier vents have no moving parts, making them incredibly silent and energy-efficient. Unlike electric or desiccant dehumidifiers, they don't require any electricity to function, relying instead on natural pressure differences. When installing a Passyfier Vent, you will need to create an opening in your external wall to accommodate the vent. The size of the opening will depend on the size of the vent you are installing.