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1 Answer

Lime plaster over existing plaster and block

Hi, I am working on a fire restoration. The home is concrete block on the exterior walls that were previously finished with plaster. It looks like the block had been coated with an adhesive, and I have had had to grind down to the scratch coat to remove the heat and soot damage. The "key" has been broken in many spots-which are now down to the block. There is some remaining wire, but only around window and door frames. I have ordered NHL and want to mix it with different grades on sand to produce two or three coats.

In General questions | Asked By Lee Favro | Feb 13 13
5 Answers

Foundation plan - suggestions appreciated

I am in the process of designing a superinsulated home (9000 HDD-Zone 7/8) on a slab. I am looking into different slab options (on grade versus foundation wall on a footing), their affordability and performance.

The attached file is a version of a foundation plan that has been given to me by someone who is also building. The design creates a thermal break from the outside slab edge and uses slightly less foam than a slab on grade, plus is a much more proven system (walls and footings) in this very cold climate than slab on grade.

Any suggestions would be much appreciated. Thanks.

In Green building techniques | Asked By Matthew Michaud | Feb 13 13
1 Answer

Knauf Fiberglass is looking for your suggestions

Today Chris Brown, the director of training and field support for Knauf Insulation, posted a long comment on Carl Seville's recent blog about sloppy fiberglass batt installations. (You can read Carl's blog and Chris Brown's comment by clicking here.)

In Energy efficiency and durability | Asked By Martin Holladay | Feb 13 13
4 Answers

Alternative for White Kraft Faced Foamboard

Hello, we currently are using 1/2"x4'x8' White Kraft Faced Foamboard. I would like to use a environmently friendly product. Does any one know of an alternative for this product. We use it to pack doors for protection. Let me know. thanks.

In Green products and materials | Asked By Susan Kolletzki | Feb 12 13
5 Answers

Attaching wood furring strips to concrete block foundation for rigid foam

What methods do you folks use to attach 1x3 wood furring strips to concrete blocks? I have a hammer drill, but I'm looking for the fastest/best method. The furring strips are just going to holding up rigid foam board, so there won't be any real weight on the furring strips.

I'm also open to any other ideas on getting the foam board attached to the wall. I've thought of adhesive, but I'm concerned with it lasting over time.

In Green building techniques | Asked By Armando Domingos | Feb 12 13
0 Answers

Ann Edminster is a candidate for ACI's "Woman of the Year" award

Ann Edminster, a GBA Advisor and blogger, is one of three candidate for ACI's "Woman of the Year" award. (ACI is Affordable Comfort, Inc. -- a nonprofit organization that sponsors an excellent conference on residential energy issues.)

Congratulations, Ann -- and good luck.

In General questions | Asked By Martin Holladay | Feb 12 13
21 Answers

Won't double-stud walls have a condensation problem?

Using exterior rigid foam solves thermal bridging and prevents condensation within the batts in the wall cavity. Double-wall construction also solves thermal bridging, but what about the dew point within the batts? Won't there be a condensation problem?

I'm designing a new house and need to choose a wall assembly: double-wall with batts or loose fill vs. single-wall w/ exterior rigid foam.

In Green building techniques | Asked By Michael Roland | Feb 4 13
8 Answers

What makes more sense, insulating crawl space vs. under the floor?

According to this page:http://energy.gov/energysaver/articles/where-insulate-home
there are about 3 ways of insulating the bottom of a house... If the house is built on grade, you insulate the sides of the slab and possibly underneath the slab.
If the house is built so that there is a crawl space, the crawl space can be of the ventilated type where the underfloor of the house is insulated with fiberglass batts or spray foam.

In Green building techniques | Asked By David Richter | Feb 8 13
7 Answers

How much am I going to save by insulating slab?

I have a daylight basement three story with an uninsulated slab in Southern Maine. It presently has 3/4 sleepers with eps between them. Is it under renovation, is it worth the work to pull sleepers to better insulate, also is radiant a better fit than baseboard hydronic. Worth the extra expense? Thanks

In General questions | Asked By Robert Mason | Feb 4 13
37 Answers

An upcoming article on energy-modeling software

I am planning to write an article for Fine Homebuilding on energy-modeling software.

There are dozens of programs available. Some can be downloaded for free; some are expensive.

It seems to me that different professions need different types of software. The best software for a builder is probably not the best software for an HVAC contractor, an architect, or an energy consultant.

In Energy efficiency and durability | Asked By Martin Holladay | Sep 27 11
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