Customizable Appearance: The external cowls of Passyfier Vents come in a range of colors, allowing them to match your home's exterior appearance. Our passive air vents work on the passive ventilation principle. Suitable for almost all properties, they are an affordable alternative to mechanical systems. They introduce fresh, clean air into your home using only natural forces. What is passive ventilation? within a dwelling is always higher than on the outside during the condensation season, and the moisture vapour However, it will be necessary to install two Passyfier Core-100 Vents to achieve almost the same water vapour transmission as one Passyfier Sleeved-230 Vent.

The external diameter of the tube is 104mm so the core should be cut larger eg. 4.25” (107mm). Permagard - Condensation Control Experts 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. 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.Insert the Passyfier Vent tube into the prepared opening, connect the internal plastic grille and the external cowl to the Passyfier vent tube, and fix to the wall surface following the manufacturer's instructions. Ensure that the vent is level and held firm in the opening. This reduces the influx of cold air from the outside, preventing excessive humidity and minimizing the chances of 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

Installing Passyfier vents is relatively simple and can be done by most DIY enthusiasts without any professional assistance. The manufacturer provides detailed instructions with each vent, but here's a basic installation guide to help you get started.Integrated Fly Screen: Passyfier vents come equipped with an internal white plastic grille with an integrated fly screen to keep insects at bay. Once you have created the appropriate opening for your vent, you can then insert the Passyfier Vent into the opening and secure it in place using the provided fixings. Be sure to follow the manufacturer's instructions carefully to ensure a proper installation. The Passyfier Sleeved 75AB Vent provides an opening on a section of wall normal to the airflow direction. Airflow through the opening is controlled automatically by the intervening mineral wool slab and thereby avoids undue draughts.

Passyfiers take advantage of the differential partial moisture vapour pressure that is normally higher inside an The unit is designed to be very unobtrusive, with a 6" (152mm) internal white plastic grill. Externally all that can be seen is a 6" white plastic external grille. occupied building than on the outside . This pressure is completely independent of that in the air. For example, aNote: Passyfier Vents are used as an aid to help control humidity and are NOT to be used as a method of providing ventilation to any gas, oil, or solid fuel appliance. The opening where the Passyfier vent will be installed must be cleaned and prepared beforehand. Remove any loose debris, paint, or dirt and ensure that the surface is smooth and level. 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: