1984 Townhouse Attic Tour: Falling Knee Wall Insulation

Take a trip through this 1984 Rockville, Maryland, townhouse in Montgomery County. It has several features that are all too common in Maryland attics!

In this video, you can see how insulation falls away from knee walls due to moisture and gravity and learn more about properly venting a top-floor bathroom exhaust fan through the roof to the "outdoors."

This video tackles air sealing the attic floor. You can see the difference between what usually exists in the Maryland housing stock and how we want to improve things and disconnect the living space from the attic with foam and other special techniques.

Thermal images are a highlight of this attic tour, and they can tell part of the story about why this home has high energy bills and low overall comfort.

0:00 Entry Into Rockville MD Attic
0:15 Knee Wall Insulation Missing
0:30 Knee Wall Thermal Imaging
0:50 Bathroom Exhaust Fan Assessment
1:07 How to Properly Vent Top Floor Exhaust Fans
2:07 Air Sealing Attic Exhaust Fan Penetration
2:26 Measuring the R-Value of this Rockville Attic
2:46 Bathroom Skylight Knee Wall Missing Insulation
2:57 How to Improve Attic Knee Wall Insulation
4:19 Air Sealing Rockville Maryland Attics
5:38 Skylight Knee Wall Assessment
5:59 Attic Hatch Treatment
7:06 Disconnected First Floor Fan Duct
7:40 Nasty Spot in Attic
8:17 Final Cellulose Insulation Blow

Unlock Your Home's Full Potential - Hometrust Remodeling, Your Trusted Partner in Maryland Home Performance