MVHR ducting to outside
Does anyone have any advice with regard to ducting the MVHR intake & extracts through a TF with 300mm cellulose?
What did you do with the external membrane?
My ducting will go through the wall into a small void in the roof overhang & then a bend in the duct to attach to external grills in the cedar cladding cloaking the underside of the overhang..
Internal wall is airtight OSB (the green stuff).
Thanks. M
When I was researching into how to install MVHR around eight or nine years ago I made a list of rules I found relating to connecting the unit to the outside. I'm sure these are not exhaustive and nor are they prescriptive, but it's what I used to install mine.
1. The inlet and outlet grilles should be 3m apart to prevent cross contamination of air. 3m was the distance I found mentioned most often.
2. The inlet and outlet grilles should be high enough (2m) to prevent interference by ani
