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Green Building Blog

New Videos: Sealing Ducts and Installing Dense-Packed Cellulose

GBA presents two new videos, both recorded at NESEA's Building Energy 13 conference in Boston

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In GBA's new video on dense-packed cellulose, Bill Hulstrunk and Chris White demonstrate the best way to staple up InsulWeb fabric and fill stud bays with cellulose insulation.
Image Credit: GBA video
In GBA's new video on dense-packed cellulose, Bill Hulstrunk and Chris White demonstrate the best way to staple up InsulWeb fabric and fill stud bays with cellulose insulation.
Image Credit: GBA video
GBA's new duct sealing video features two experts from Conservation Services Group, Eric Wilder and Will D’Arrigo, who explain how to seal duct seams with mastic and how to use a Duct Blaster to test duct tightness.
Image Credit: GBA video

GBA has released two new videos: one on installing dense-packed cellulose in stud cavities, and the other on sealing duct seams with mastic.

Both videos were recorded in March 2013 at NESEA’s Building Energy 13 conference in Boston.

How to install dense-packed cellulose

The cellulose video features Bill Hulstrunk and Chris White, two experts from National Fiber, a manufacturer of cellulose insulation. Among the questions answered in the video:

  • What tool is best for cutting InsulWeb fabric — scissors or a utility knife?
  • What’s the maximum recommended spacing between staples?
  • What are the minimum specs for an air compressor used to power a pneumatic stapler?
  • How can you tell whether damp-spray cellulose was installed with too much water?
  • If studs are spaced 24 inches on center, is it still possible to install cellulose insulation behind InsulWeb?

How to seal duct seams

The duct sealing video features Eric Wilder and Will D’Arrigo, two experts from the Conservation Services Group. Among the questions answered in the video:

  • Are any tapes durable enough for duct sealing?
  • When should I use mastic, and when should I use tape?
  • When should mastic be applied with a paint brush, and when should it be applied with a trowel?
  • Can I use a fog machine for duct leakage testing?

Subscribe to GBA to enjoy all of the benefits of GBA Pro membership

The two new videos are available to all GBA readers — even those who aren’t GBA Pro members.

However, many other GBA videos are only available to GBA Pro members. To enjoy all of the benefits of GBA Pro membership, subscribe to GBA Pro today or try our 14-day free trial.

Here are the links to the two new videos:

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