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6 Answers

Cupping shingles on brand new roof?

Hi everyone,

Asked By Tony Johnson | Sep 27 14
12 Answers

Grid-tied without independence … what’s the point?

Grid-tied without independence … what !?! … what’s the point …

Just read this at RMI and was shocked at the prospect that grid-tied PV systems (and probably wind, too) are not normally run by servo mechanism that locks out the network to favor independence in the event of a grid failure. That’s just dumb.

“When The Power's Out, Solar Panels May Not Keep The Lights On”

Asked By flitch plate | Sep 29 14
1 Answer

Lawyers, Engineers and Builders Oh MY!

A place to debate or kill some time

Asked By aj builder, Upstate NY Zone 6a | Sep 27 14
10 Answers

Best place to buy rigid foam insulation?

In general, where have you found the best price on XPS and Polyiso? Lumber yard? Big box stores? Other? We are in the design stage of a new custom home project and I want to analyze price/performance as we are creating the plans. In the past I have relied on my stucco sub to provide it in his bid, but we will install on this project. Thanks for your input!

Asked By Bill Costain | Oct 11 11
15 Answers

Has anyone used the shim screws and EPDM gaskets made by Conservation Technology for installing windows?

Is the technique easy to learn? How many shims crews would you use on a window?

Asked By David A Flannery | Aug 18 14
1 Answer

With DriCore, why is the 1/4 inch gap around the perimeter necessary?

Just watched the install guide for Dricore. I'm finishing my basement. Right now it's bare concrete. It says in the video to leave a 1/4 inch gap around the perimeter. However it doesn't give a reason why. Here is what I was originally planning on doing. I have true foam type two rigid adhered to the concrete walls with seams taped and spray foam to fill in the corners and bigger gaps. Next the plan was the install the dricore tight against the foam. exterior walls are to be studded up on top of the dricore 24' oc with r20 batts between the studs.

Asked By Mark McKenzie | Sep 23 14
2 Answers

French drain


I had a question about the gap at the wall with the french drain. We are concerned about radon, and if we do not anticipate any water entering the basement again after install of the drain, can we not have this gap at the wall?
Can this simply be cemented over? Contractor said it could.

Asked By Dave Mac | Sep 23 14
14 Answers

Insulated slab detail "problem"

We are to build a Passive House in PA, and have "borrowed" a technique from another PH in Virginia, where part of a typical EPS under slab was substituted with a layer of perlite bags placed over just 4'' of EPS. I believe it also allowed us to reduce the slab thickness to 4'' (in the center).

Asked By Lucyna de Barbaro | Aug 22 14
21 Answers

Liability insurance - what would that cover?

1. Does liability insurance cover issues related to removing improperly installed open-cell foam in an attic on the underside of a roof (i.e. all those horror stories about roof rot, or open-cell continually off-gassing or smelling weeks after it was installed, etc..)? Or is that a different type of insurance?

2. Should I specifically ask for the details in the Liability insurance to find out specifically what it covers, is that something contractors should be willing to share?

Asked By George G | Sep 12 14
2 Answers

Reading “new to old”

Choice Martin in Q&A but then in blogs posts are not able to be new to old.

Easy fix to be done some day.

Thanks neighbor

Asked By aj builder, Upstate NY Zone 6a | Sep 20 14
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