Energy efficiency and durability

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Polystyrene over vapor barrier? 4 15 weeks 1 day ago
by Dennis Filer
15 weeks 16 hours ago
by Martin Holladay, GBA Advisor
Wet basement OSB sheathing 25 15 weeks 6 days ago
by Neil Cicciu
15 weeks 20 hours ago
by Neil Cicciu
Sheathing between foil-faced polyiso and closed-cell spray polyurethane foam 3 15 weeks 3 days ago
by Ted Cummings
15 weeks 2 days ago
by Nate G
Is spraying 1 1/2" of closed-cell foam to the interior of block walls an efficient form of insulation? 2 15 weeks 3 days ago
by Zach Lacy
15 weeks 2 days ago
by Dana Dorsett
How to prepare a window opening in a concrete basement (foundation) wall 1 15 weeks 3 days ago
by zoya duba
15 weeks 3 days ago
by Martin Holladay, GBA Advisor
How risky is a single layer nailbase SIP over a single stud wall with sealed sheathing? 2 15 weeks 3 days ago
by Rachel Wagner
15 weeks 3 days ago
by Rachel Wagner
I have narrowed my search for fiberglass triple-glazed windows to Fibertec and Thermotech — seeking comments about these two 29 2 years 19 weeks ago
by JOSEPH POLAND
15 weeks 4 days ago
by Ted Cummings
EPS/XPS or ??? on interior side of cathedral roof in zone 7 3 15 weeks 5 days ago
by tim brown
15 weeks 4 days ago
by D Dorsett
What is the vapour permeance of plaster and lath? 2 15 weeks 6 days ago
by Alan B
15 weeks 5 days ago
by Alan B
Need help choosing an efficient HRV air exchanger 7 16 weeks 14 hours ago
by Jim Lafleur
15 weeks 5 days ago
by Jim Lafleur
insulation over plaster and lathe 2 15 weeks 6 days ago
by Erich Riesenberg
15 weeks 6 days ago
by Erich Riesenberg
Double Stud and Sheathing Moisture, Is negative air pressure a solution? 7 16 weeks 3 days ago
by Joseph Malovich
15 weeks 6 days ago
by Charlie Sullivan
Order of upgrades 8 17 weeks 1 day ago
by Daniel G.
15 weeks 6 days ago
by Dan Kolbert
Is rigid foam board over fiberglass batt insulation on a truss rim joist parallel to interior floor trusses ok? 3 16 weeks 13 hours ago
by Brent Fischer
16 weeks 11 hours ago
by Dana Dorsett
Is it possible to simply drill and loose fill my ceiling to improve efficiency? 4 16 weeks 1 day ago
by Erik Cecere
16 weeks 17 hours ago
by Martin Holladay, GBA Advisor
Follow-up question on cut & cobble rigid foam in rafters 2 16 weeks 1 day ago
by Brian Gray
16 weeks 18 hours ago
by Martin Holladay, GBA Advisor
How much energy is lost due to indoor sourced air for combustion in a furnace? 3 16 weeks 3 days ago
by Alan B
16 weeks 2 days ago
by Alan B
Poly on interior wall 22 16 weeks 5 days ago
by Nicholas C
16 weeks 3 days ago
by Nicholas C
Help with wall details 1 16 weeks 4 days ago
by OLIVIER van lier
16 weeks 3 days ago
by Martin Holladay, GBA Advisor
How do I keep my sheathing dry? 4 16 weeks 6 days ago
by David Baerg
16 weeks 4 days ago
by David Baerg
Is 4" of foam worth it? 5 16 weeks 6 days ago
by Michael McArdle
16 weeks 4 days ago
by Michael McArdle
HRV as sole means of controlling interior humidity - fail! 15 20 weeks 4 days ago
by Andy Chappell-Dick
16 weeks 5 days ago
by Andy Chappell-Dick
Placement and selection of the elusive barrier. 2 16 weeks 5 days ago
by Thomas Hoffmann
16 weeks 5 days ago
by Nate G
Western Montana cabin and home 4 16 weeks 6 days ago
by Keith Roxo
16 weeks 5 days ago
by stephen sheehy
Looking for removable air barrier 2 16 weeks 5 days ago
by Alan B
16 weeks 5 days ago
by Charlie Sullivan
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