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3 Answers

Was just reading Carl's article on closed crawlspaces butdecided to post in Q&A.

In Green building techniques | Asked By Danny Kelly | Aug 8 11
20 Answers

I have read about every blog I could find and skimmed through most of the Q&A....tons of great info but nothing directly related to my exact situation.

Working on the design of a new house...In zone 6 with about 7400 HDD. House is about 1700 sqft on the main level, with full walkout basement (walks out to the north) and about another 1400 heated floor space in the basement.

In General questions | Asked By Jesse Lizer | Aug 3 11
14 Answers

Throughout the several discussions comparing/contrasting vented and unvented roofs and attics, the importance of keeping attic air from making contact with the roof deck underside is stressed. What I've not seen addressed is the situation where the ceiling (be it sloped or horizontal) is truly airtight. As in NO penetrations of any kind whatsoever, uninterrupted drywall, lotsa mud and tape, and all joints firmly backed up with deadwood and acoustic sealant. In short, whatever it takes to make it hermetically sealed.

In Building Code Questions | Asked By Charles Berg | Aug 2 11
0 Answers

Is anyone familiar with this product?:


What are your thoughts on it? Seems pretty efficient to have 3 functions rolled into one material.

In Green products and materials | Asked By Heather Gayle Holdridge | Aug 8 11
7 Answers

We are building a community house for aid orphan children for a charity in Johannesburg, South Africa, with the use of international shipping containers. They are interconnected to form a housing unit for 12 plus children. We envisage using a high-density polystyrene boards internally for insulation.This board is plastered with a polyester fabric in the plaster to prevent cracking.

This gives the board rigidity with high impact strength. The board is used as a cladding to the internal face of steel container wall with a 10 to 15 mm cavity.

In Energy efficiency and durability | Asked By Bernard Wall | Aug 6 11
2 Answers

Has a good analysis been done comparing the financial/ environmental impact between the operating energy needed over 50 years ( or longer) and the initial cost/ environmental impact of building a house? This seems like an essential green question to me.

Thanks for any help on this question.

In General questions | Asked By james Corsa | Aug 6 11
3 Answers

Architects details call for a 20 mil duraperm barrier on the underside of 8 1/4" SIP's with a ice and water shield on top. The roof is metal.

In Energy efficiency and durability | Asked By Arlis Palmer | Jul 29 11
9 Answers

I'm renovating a house in the Seattle area. Part of the renovation includes changing the roof lines for good solar exposure. Heating will be hydronic radiant upper floor (1900 ft2) and hydronic wall panels in finished daylight basement (1400 ft2). Floors will be connected with an open staircase. Air sealing and high levels of insulation are being incorporated. Being on Puget Sound, we're sacrificing insulated west walls for an expansive view of the Sound using a lot of Serious windows. Very efficient windows but windows none the less.

In Mechanicals | Asked By Greg Lindstrom | Aug 5 11
6 Answers

Customer of mine has a house with a wall of windows facing southwest. In the summer the living room gets too hot near these windows, which are mostly unshaded. They are soft coat two layer low-e from about 1993. I'm wondering about a couple of strategies for reducing solar gain without replacing the glass or sash. One would be to install some sort of shading across the header above the large units... something that projects more or less straight out and shades the glass without interfering with the view.

In Energy efficiency and durability | Asked By David Meiland | Aug 5 11
4 Answers

I am planning to install 4 inch polyiso insulation panels on the roof deck of my Cape Cod style home located in Cape Cod Massachusetts. There is currently 6 inches of fiberglass insulation installed between the 12 inch rafters up to the collar ties. The insulation is then located between the collar ties just above the ceiling of the upper floor. There is a vapor barrier between this insulation and the ceiling sheet rock. There is a small vented area beneath the roof above the collar ties.

My questions:

1. Can I install the polyiso panels and leave the current insulation in place?

In Energy efficiency and durability | Asked By Neil Wintfeld | Aug 3 11
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