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3 Answers

What is the most current "best practice" solution to the type of underlayment between SIP and the selected siding.

The standard 7/16" OSB sheathing on the SIP panel is bound to be moisture sensitive. What is the most effective underlayment or barrier to ensure adequate air flow between the selected siding and the SIP unit? Also: Which siding options (vinyl, cement board, etc.)can be fastened effectively to the OSB, given the absence of studs in the structure, which, if they existed would provide addequate support for applying almost any type of siding.

Asked By norman solomon | May 5 09
0 Answers

I am searching for living gable roof best practices or materials for steeper sloped roofs.

I am looking for green or living roofs techniques for residential housing with steeper slopes of 4:12 to 6:12. I am aware of what is available for commercial buildings, however most systems are designed for 2:12 slopes or less. I am looking for best practices or products that incorpernate a steeper slope application. I am building in the midwest,climate zone 5.

Asked By Brian Fitzgerald | Apr 30 09
2 Answers

How do I seal a crawl space, with a below-grade basement with an existing slab?

I do a load of work retrofitting "new" green building practices into 80-100 year old homes. Sealed crawl spaces is a particular retrofit specialty, but even after installing a half dozen or so we still run into our head scratchers. See, here in the clay filled piedmont of North Carolina, no one builds basements on a flat lot. The drainage problems are too many. Of course, builders didn’t figure that out until mid-century, so there are plenty of historic homes stuck with below-grade basements.

I want to seal them. Here's how I want to do it:

Asked By Aaron Lubeck` | Apr 21 09
1 Answer

Can I add 2" rigid insulation at exterior of the building and keep existing windows?

I am working on the renovation of an existing commercial building. We would like to add 2" of rigid insulation and a drainage plane to the building, but we plan on keeping some of the existing awning windows that are in good condition. Can I furr out around the existing windows? Or do I need to relocate the existing windows to the new exterior plane of the wall? I am concerned about the weak point for water infiltration at the window sills. I am using xps foam, blocking as required, and p.t. strapping. We are installing new fiber cement siding and new trim around the windows.

Asked By maura o'dea | Apr 16 09
3 Answers

Where do you find the amount of days of sun per year you might expect in a certain area? For example, Phil., PA?

Is this information available on the net?

Asked By Al Antonucci | Apr 6 09
2 Answers

Is there a LEED certification program for building professionals?

I am interested in finding a educational program that may provide
accreditation in LEED construction For building professionals.

Asked By Wiliam Groves | Apr 1 09
17 Answers

rigid insulation on the exterior of a wall assembly?

Does anyone have experience detailing rigid insulation on the outside of an exterior wall assembly? If so, do you have a solution that locates the rigid outside of the sheathing? I see most of the details here (strategies and details) locate the rigid between the studs and the sheathing. This is a problem for our seismic zone and advanced framing.
Any advice or experience will help!

Asked By Jennifer Reilly | Feb 26 09
2 Answers

I'm concerned about rigid exterior insulation being a vapor barrier

Hello, sorry to add yet another question about exterior rigid insulation, but I can't find information on this elsewhere. I am working on designing a Habitat for Humanity home in a mixed-humid climate. Dow will give us insulation free, and I want to wrap the home in 1" over the sheathing and building felt, and under cement-board cladding. I am concerned about it being a vapor barrier, however. I can not find perm information for Dow Stryofoam. Any thoughts?

Asked By David Quillin | Mar 24 09
10 Answers

any advice about insulating walls in an old house?

i'd like to not have to tear out the interior walls. foam products inserted from the top might expand too fast and not make it to the floor. someone suggested pouring in vermiculite between the studs. i'd really appreciate suggestions/advice. thanks, robin

Asked By robin kautz | Feb 5 09
2 Answers

Do I need house wrap under exterior wall rigid foam ?


Do I need to put house wrap ( Tyvek etc) between exterior 3/4 "iso rigid foam (taped)? Can I go naked or just 15 lb felt?

I'm looking at tech drawings on the site and it's not shown.

My guess is not, but why not ask before I go through all this an d do something dumb.


Asked By Steve Greenberg | Mar 10 09
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