💡 In Episode 13, Rob Hewski, owner of Northeast AeroBarrier, gave us a complete training on how to do proper air sealing and the tips on achieving an ACH (air changes per hour) score of 3.
📝 Tip #1: Air Sealing Sill Plates to Foundations
📝 Tip #2: Closing up outside cantelivers and overhangs with an air barrier or blocking
Important to note❗️
As of April 1st this year, it is mandatory for all builders of new constructions, renovations and retrofits to follow 2018 IEEC energy code standards.
In short, what does this mean?
A mandatory blower door test is to be performed. The infiltration level required is below 5 air changes an hour.
What does ACH mean?
The ACH is the air changes per hour.
💨 Pressurize the building to 50 pascals with the blower door fan. Reference the pressure on the outside vs the pressure on the inside of the building.
The leakage number for the building is determined by the extra air the fan needs to inject into it to maintain the goal of 50 pascals.
🏢 📏Take the entire volume of air in the building and compare it against the amount of air that is needed to maintain pressure in the building.
❗️That number gives the CFM leakage (cubic feet per minute) that is required to maintain the 50 pascal level.
At GRIT, we go above and beyond to guarantee good air sealing and quality in all of our buildings.
This is why we do a pre-blower door test. Then, we perform another test after spray foaming and insulation, and a final test right before certificate of occupancy.
Special thank you to @northeast_aerobarrier 🙌🏻
🧱 If it’s GRIT built, it is a building you can depend on because GRIT cares.
For more, please watch: Proper Air Sealing Ft. The Abigail Nine