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6 Answers

Exteror wall construction / insulation — new construction

Hi, I live in Zone 5a Northern IL and am building a new home.
I have questions on exterior wall insulation/construction.
I’m confused on interior vs. exterior drying/condensation/dew point and insulation.

My architect suggests the following standard construction method. 2x4 studs 16" On center
Masonry |House wrap Tyvek| OSB| wood studs with fiberglass batts in between the studs |drywall

Is there a better construction method?

Asked By Ani Brown | Sep 30 13
21 Answers

Why is this site DOWN so often??

Seems like almost a daily occurrence lately.

Asked By David Meiland | Jul 17 12
7 Answers

Water management for a stepped foundation daylight basement

I am currently helping my builders excavate for a stepped foundation for my future house with a daylight basement. I'm not sure what to do for a footing drain with the stepped foundation or even if it is necessary. The obvious answer would be to get a pro to handle it, but I am in Japan and footing drains, exterior damp proofing, etc. are unknown to the pros that I have met with here.

Asked By Eric Matsuzawa | Sep 28 13
3 Answers

OSB subfloor and rain during construction, just how much can it take?

How many rainy days of rain can OSB subfloor handle before I should upgrade to a product like Advan Tech? It is not a regularly stocked item here and might take two weeks to get it in...and it obviously costs much more. however, I am now in the rainy season as I start this framing project...

Asked By Eric Mikkelsen | Sep 28 13
2 Answers

How do I stop a reoccurring mold problem?

I have a client with a set of stairs leading to their finished basement. They have had a reoccurring issue with mold growth on the last few treads and risers. I have added a vapor barrier in the crawlspace behind, re-insulated the stairs with rigid foam and caulked or foamed every last crack. I've had these stairs apart twice now and after the last time (2 yrs ago) I thought I'd finally solved the problem. Unfortunately, I got the "it's ba-ack" call last week. Any ideas?

Asked By Robert White | Sep 29 13
1 Answer

What do you know about 'electronic plan rooms' and do you prefer them over contractor pre-qualification?

I'm reading Guidelines for a Successful Construction Project by the Associated General Contractors of America. In the chapter entitled Guideline on Bidding Procedures the authors encourage owners and general contractors to investigate and implement web-based plan access to maximize plan availability while minimizing cost. Curious to know what your experience with these plan rooms has been.

Asked By Garth Brown | Sep 29 13
2 Answers

3M All Weather Flashing Tape VS. Grace Vycor when used in flashing on plywood

Does anyone have experience with comparing these flashing tapes: 3M All Weather Flashing Tape compared to Grace Vycor Tape?

Asked By Eric Mikkelsen | Sep 28 13
1 Answer

Preferred subfloor material and adhesive for minimum off-gassing?

Does some subfloor and adhesive rate better than others for minimum off-gassing? Regular OSB is the least expensive, but are some brands better than others? and the same with subfloor adhesive; is there a healthier brand for indoor air quality or is it all about the same?

Asked By Eric Mikkelsen | Sep 28 13
2 Answers

Slab on grade polyethylene placed below or above foam board insulation

Is there any issue placing the plastic sheeting under the foam board insulation to protect it from punctures caused by rebar placement and tears during the pour?

Asked By bob holodinsky | Sep 28 13
1 Answer

What economical material to use to stop possible moisture wicking?


I am replacing bottom plates of interior walls that rest on a cement floor.

I would like to stop any possible wicking of moisture from the concrete floor to the 2x4 bottom plate.
I am considering stapling 30 min tar paper to the bottom of the 2x4 plate and then foam sill gasket material over the tar paper.
Don't know if this is a good idea or not. Is it possible to get a reaction between the tar paper and the foam sill gasket.
Don't know if foam sill gasket wicks moisture or not.

Asked By Bill Will | Sep 27 13
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