Energy efficiency and durability

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Please tell me why I have to put so much insulation / outsulation at the roof/celing? 10 11 hours 12 min ago
by leo kloop
4 hours 11 min ago
by Martin Holladay, GBA Advisor
Proper Approach to Insulation Under Add-On Porch 7 1 year 44 weeks ago
by Historical Work
19 hours 36 min ago
by aj builder, Upstate NY Zone 6a
Improving R-value of 2x4 wall in renovation with interior foam board 4 6 days 19 hours ago
by Eric Nash
2 days 12 hours ago
by Keith H
Old house with no sheathing/vapor barrier 3 5 days 4 hours ago
by charles elrod
4 days 22 hours ago
by Richard Beyer
Window coating confusion 4 6 days 3 hours ago
by Dave B
5 days 6 hours ago
by Stephen Thwaites
Proper way to insulate an old attic? 11 6 days 21 hours ago
by Justin Lee
5 days 18 hours ago
by Richard Beyer
Insulation for dormer with thinner studs 3 1 week 3 hours ago
by Andrew David
6 days 22 hours ago
by Andrew David
A layer of 1" XPS foam between fiberglass batts? 3 1 week 4 days ago
by Joshua Streblow
1 week 23 hours ago
by Dana Dorsett
Insulating Cantilever Space Containing Water Pipes Zone 4A No. VA 1 1 week 3 days ago
by Alex Chandler
1 week 3 days ago
by aj builder, Upstate NY Zone 6a
Air and moisture proofing 4 1 week 4 days ago
by Dave B
1 week 4 days ago
by Martin Holladay, GBA Advisor
Insulating and air-sealing a room-in-truss over a garage 3 2 weeks 16 hours ago
by Ben Helmreich
1 week 4 days ago
by Martin Holladay, GBA Advisor
Thoughts on insulating — renovation 2 1 week 4 days ago
by Dave B
1 week 4 days ago
by Dave B
Metal building — office insulation 1 1 week 4 days ago
by William Sauder
1 week 4 days ago
by Martin Holladay, GBA Advisor
Has the Oak Ridge study on convective heat loss in blown fiberglass been updated to cover newer materials? 6 10 weeks 18 hours ago
by Neil Weinstock
1 week 5 days ago
by Terry Lee
Trying to determine best assembly to insulate an old church roof being converted to office 4 1 week 6 days ago
by Eric Kronberg
1 week 6 days ago
by Eric Kronberg
Out-sulation vs Double Stud Walls 4 2 weeks 6 hours ago
by Rob Shuman
2 weeks 4 hours ago
by Dan Kolbert
Spray foam & wood roof deck 15 2 weeks 4 days ago
by Sheila Sullivan
2 weeks 21 hours ago
by Dana Dorsett
Roof insulation / decking combination 1 2 weeks 1 day ago
by Mike Gagne
2 weeks 1 day ago
by Martin Holladay, GBA Advisor
If I have a 5 1/2 in. square framing bay and the exact same 5 1/2 inch square batt, does it matter which way I install it? 5 2 weeks 2 days ago
by rich graves
2 weeks 2 days ago
by rich graves
Insulating interior AND exterior basement walls OK? 3 2 weeks 4 days ago
by Nikola Kolarich
2 weeks 2 days ago
by Martin Holladay, GBA Advisor
Ventilation above foam on roof application? 4 2 weeks 6 days ago
by terry grube
2 weeks 4 days ago
by Martin Holladay, GBA Advisor
Necessary layers for a wood-framed insulated metal building 4 2 weeks 5 days ago
by Zane Morgan
2 weeks 4 days ago
by Malcolm Taylor
I need to show that 4" of EPS is weather resistant 3 3 weeks 1 hour ago
by Daniel Sterns
2 weeks 6 days ago
by Martin Holladay, GBA Advisor
Vented crawl space insulation, Southern California 2 3 weeks 18 hours ago
by Mike Simanyi
3 weeks 1 hour ago
by Dana Dorsett
Insulating an unvented low-slope roof 1 3 weeks 3 hours ago
by Alexander Brace
3 weeks 3 hours ago
by Martin Holladay, GBA Advisor
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