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1 Answer

Insulating a 150-year-old house

I am gutting a 150 year old balloon-frame house in Vermont with board sheathing, I am going to add a second row of studs or 1 1/2" horizontal strapping to the walls, blow in cellulose, and use airtight drywall. Should I do anything to seal the cold side of the wall? Tyvek on the inside of the sheathing?

In Energy efficiency and durability | Asked By will goodwin | Mar 21 10
3 Answers

How much weight will a 2 by 4 roof/ceiling truss take?

I have a manufactured home and want to add insulation and replace the ceiling.

In General questions | Asked By charles kilpatrick | Mar 21 10
13 Answers

Foam on retrofit 2-wythe brick mass walls?

Hi, i live in Baltimore. I am thinking of adding insulation to my 2 story + basement house. It was built in 1938. It has a double layer of brick for external wall support (total 8 inches). This is not veneer cladding but a mass wall, supporting the roof. I think originally there may have been plaster applied to the brick on the inside. However, the walls sound hollow when I knock on them, and someone has suggested the house may have been retrofitted in the past with perhaps some furring and a layer of drywall. In the unfinished basement, this brick is exposed.

In Green building techniques | Asked By Richard | Mar 17 10
0 Answers

Would these planters be good on the cemeteries for plants?

I want to put back some plants on my parents graves. Would these be OK?
Would the drainage hurt these plants outside? These plants will be on a grave site all summer.
There are no drainage holes — just worried that it would hurt them.

In General questions | Asked By Mac | Mar 20 10
24 Answers

Can I build an old-fashioned vented crawl space with modern Lstiburek reccomendations?

Joe Lstiburek, the respected building scientist with Building Science Corporation, provides an approach to building vented crawlspaces in energy efficient houses. http://www.buildingscience.com/documents/insights/bsi-009-new-light-in-c...

In GBA Pro help | Asked By Michael Chelnov | Mar 12 10
4 Answers

Where can I find insulation performance curves?

I have seen a performance curve for fiberglass insulation in the past but have not seen anything for other types of insulation. This curve plotted R-values vs. temperature. I'd like to compare the different materials side by side to better inform customers. If I remember correctly the fiberglass curve looked like a bell curve with its greatest value at 55 degrees. Does a comparison study exist?


Bruce Chyka
Performance Plus Homes

In General questions | Asked By Bruce Chyka | Mar 18 10
3 Answers

Is it worth it to install rigid insulation on the inside face of framing?

I have a small, 1910 home in Seattle. This year, we will be gutting most of the main foor and installing recycled cotton batt insulation in the 2x4 wall cavities. Would it be worth the extra effort to install rigid foam on the inside face of the framing before installing a vapor barrier and drywall?

In Energy efficiency and durability | Asked By Lauren | Mar 18 10
0 Answers

Looking for upcoming seminars on Green Building Construction in the Detriot, MI. area, perferably in April. Thank You!

I'm simply interested in attending some introduction or training seminar if someone could inform me of any that are scheduled to begin in April.

In General questions | Asked By Leonard Harris | Mar 18 10
2 Answers

Living in the Midwest (Kansas City), in a finished basement should you insulate the whole wall? And what R-value?

8 foot basement walls with 16" above grade.

In Energy efficiency and durability | Asked By chris marks | Mar 17 10
4 Answers


I'm interested in ICFs primarily to build foundations for new residential homes. I don't know about using them for the walls of an entire house, but it seems good to use them in foundations, especially as I get more convinced that crawlspace ventilation does not seem necessary in most climates. Building footings with protruding rebar, then stacking ICFs for the rest of the foundation seems so much easier than wood or plywood forming. Then clean and cover the interior earth with ground barrier.....frame without the need for floor insulation, etc.

In Energy efficiency and durability | Asked By Ed Welch | Mar 15 10
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