ggal:
Thank you for the brochure Brian.
As for your comment that NO HOUSE IS TOO TIGHT, why else would newer houses need mechanically assited air exchangers (HRVs)?
Too tight is obviously a relative term but let’s assume that an older home can be sealed to the level of a new house, wouldn’t you agree that if an HRV is not added that house WILL be too tight to the point that it will be uncomfortable.
Gabe
This is a termed from the “STREET”, spoken by those that have no real training in energy efficiency and no understanding in good building practice for durability of homes.
When you speak to a well trained and experienced practitioner in these fields, your jaw will drop as you learn about things you were never taught in your professional studies!
jbushart
February 2, 2011, 2:29pm
22
Brian_A.MacNeish:
jbushart:
That is because an infrared camera is insufficient to address what you are referring to as “house tightness”. It is like attempting to photograph the wind and use your photo to judge its speed and volume.
Lack of insulation has nothing at all to do with air leakage. Insulating an air bypass simply filters the conditioned air as it leaves the building.
Dense-pack cellulose has been used for many years as part of an airsealing program for homes. It’s been mentioned many times in articles about “projects weatherization” programs. (Home Energy magazine)
Even if it’s not dense-pack, cellulose reduces air leakage in homes. After buying a blower door in 1981, the first house my company insulated was a 1920’s balloon framed 2 storey. We were only contracted to do the walls with the homeowner to do any further interior airsealing at the walls on his own. We did a pre-insulation air leakage test and a second immediately after the walls were blown. At this point nothing else was done to the house…The air leakage at 50 pa had been reduce by 38%.
It works in retrofits but it is not the air sealing method of choice. I have brand new construction in my area where gaps around windows are “sealed” with crushed batt.
[quote=“jbushart, post:22, topic:56195”]
Well trained, aren’t they?
measter
February 5, 2011, 4:51am
24
[quote=“jbushart, post:22, topic:56195”]
It’s state-of-the-art around here. They don’t know anything different.