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

Product Information

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. Looking at Ventilation Strategy & Options Mould caused by ineffective ventilation and poorly insulated loft space. Use the Passyfier Sleeved Vent Kit wherever practical to maximise the transmission of water vapour.

They allow air to flow through a mineral wool slab in a controlled manner, tapping into the pressure differences between interior and exterior spaces to allow moisture-laden air to escape from your home.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.

Use the Passyfier Sleeved Vent Kit where ever practical to maximise the transmission of water vapour. 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. The Passyfier Core 100 Vent 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. 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. 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 Passyfier 100 Core Vent: With a water vapor transmission capacity of up to 1 liter per 24 hours, this vent requires a 132mm diameter core and is suitable for rooms with a floor area not exceeding 7m². 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? 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.

Input ventilation was found to be effective in reducing relative humidity levels by around 10%RH in the test house, even when internal doors were closed. Vapour pressures reduced overall by 0.2kPa. The unit was shown to be more effective upstairs than downstairs. Passyfier Dehumidifier Vents provide an efficient and cost-effective solution to condensation and humidity issues in your home. With their noiseless operation, energy-efficiency, versatility, and maintenance-free design, they offer a range of advantages for your home.

In the field monitored houses input ventilation was not consistently effective in reducing relative humidity. When internal humidity levels over those outside was examined, PIV was found to be effective in the most humid houses but did little in the dryer houses. Even in the cases where it was effective there were often inconsistencies between rooms in the same house. 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. I’d be understating the case if I said that results were not particularly encouraging and an interesting point that was made is that the occupants perceived improvements or benefits were far greater than were actually proven. Clearly for some occupants there was a psychological benefit or placebo affect taking place. The last time I wrote about the proven poor performance of PIV I had damp industry salesmen stating their disagreement and commenting about how great PIV was and how they’d had a ‘masterclass,’ not just a class, but a masterclass in ventilation from someone at the BRE involved in this study but this doesn’t change the findings and we simply don’t ever specify PIV and have never needed to. Positive Input Ventilation (PIV) or Expensive Fan Heater? In my experience, mechanical extraction to the loft space would have little effect or benefit. You should focus on the following: It is important to realise that the release of moisture vapour pressure within a dwelling to avoid condensation does not require a specific ventilation rate.

Customizable Appearance: The external cowls of Passyfier Vents come in a range of colors, allowing them to match your home's exterior appearance. 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. For the Passyfier 100 and Passyfier 140, you can create the opening using a Dry Core Bit (Use a 132mm size for Passyfier 100 and 162mm size for a Passyfier 140). This is a special drill bit that can be used to cut a clean, circular hole in the wall. Begin by marking the centre of the desired location for the vent on the external wall using a pencil or marker. Then, using the dry core, drill through the wall from the outside until you reach the inside surface. Builders often reccomend passyfier vents, these work on the principle of air movement and pressure changes - eg when you open and close a door, but as you do not open and close doors all night when condensation is at it's worst (not if you want some sleep that is) their efficiency is limited. They will help to reduce but seldom cure condensation problems. Builders tend to reccommend them as they are easy to fit and you do not have to carry out any complex calculations for them.The moisture vapour pressure within a dwelling is always higher than the outside pressure therefore there will always be an escape of moisture vapour by the diffusion process through the Passyfier Vent. Ensure that there is a good seal to the loft hatch. Many hatches are very poorly sealed and allow moist air to migrate into the roof space.