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1 Answer

Sourcing Foamglas

I'm considering Foamglas as footing insulation. Does anyone have contact information for pricing and ordering Foamglas T4+ boards in the US? I've started working my way through the contact info on their website, but I'm hoping someone may already have found the right person to talk to.



In Green products and materials | Asked By John | Oct 4 15
7 Answers

Can anyone direct me to the best information on wiring a new residence for 100% LED lighting?

I am looking for LED wiring 101 ~ What are wire gauge options, voltage regulating options and what are the things to watch out for?

I understand we are still very much in a hybrid AC/DC universe and AC has to exist for kitchen appliances, and infrastructure appliances in the Utility room, however our client wants to take the step into LED. The house is around 1600sf and one floor.

In General questions | Asked By Caroline Di Diego | Apr 13 15
10 Answers

How to release stored heat in floor's thermal mass

Years in the planning, five months in building, we are now home at last in our 1,100 sq passive home at 46 degrees North in North Central Minnesota.

Fujitsu Halcyon mini split heating and cooling.Heat load is around 26K BTU

Q 1. Am I correct assuming that I have to set the the two mini splits' thermostats at a night time temp that is lower than indoor temp before the concerete floor's thermal mass will release its heat?

Last night I set mini splits at 66 degrees -- guessing that that setting would be cooler than floor.

In Mechanicals | Asked By Randy Bunney | Oct 2 15
6 Answers

Outdoor reset vs setback on single-stage boiler

I'm trying to figure out what would be the more efficient thing to do in my situation. I've recently heavily insulated the house and installed a radiant hydronic system (making sure to do a detailed load analysis and system design by the Sigenthauler hyrdonic book). While the radiant system and boiler loop are new, the boiler is a 20 year old cast-iron boiler that I want to nurse along for a few more years (mostly because of current budget).

In Mechanicals | Asked By Eric Stormfield | Oct 3 15
2 Answers

Radiant heat and spray foam insulation

I have just installed radiant heat under my deck that is now part of our living space. The area is 24 ft by 6 ft by 6 in and 2 ft of the ground. The pex tubing is attached directly to the deck with alum. heat
transfer plates with a 6 in space from the outside edges. My question is: can I spray foam over the
pex and plates without any airspace at all ?

Thank you

In Energy efficiency and durability | Asked By Anthony Bartolotti | Oct 3 15
13 Answers

Ideal window rough opening gap for good air sealing

The manufacturer I'm ordering windows from allows a rough opening gap around the window of 3/8" to 1/2" from all 4 sides (so the rough opening would be 3/4" to 1" wider & taller than the window).

In General questions | Asked By Nick Hall | Sep 28 15
4 Answers

Odour from Certainteed fiberglass insulation

We just had some Certaineteed fiberglass insulation installed,in our house and have noticed a very strong odour from it. I thought it would dissipate relatively quickly but after 4 days , it is still quite noticeable. In fact, the odour was so strong that we had to go to a hotel because it made my wife sick.

As anyone ever had this experience with Certainteed fiberglass insulation before?
I have worked with other brands of insulation in the past and cannot ever recall that strong of an odour.

Does anyone have experience with Certainteed?
Is this normal for Certainteed?

In General questions | Asked By Aaron Gatzke | Oct 3 15
3 Answers

Insulation for radiant staple up

Hi, we are building a home in climate 5. The house will have geothermal with radiant heat in the basement slab and the first and second floors. We intend to finish the basement at a future date but not right away. Our contractor was planning to staple up the insulation with aluminum transfer plates and insulate with the foil bubble wrap stuff (thick foam under the basement slab.). I have read a lot about insulation for this type of application and it sounds like the foil bubble wrap stuff has little value.

In General questions | Asked By Mel Tillyard | Oct 2 15
6 Answers

Insulating a flat roof in Chicago

I have had continued problems with my flat roof on our 10-year-old 3-unit building. This will be the 3rd time having to do major work.

The ceiling below has about 8 inches of blown in insulation with an 8 inch or so open space above. All of which is within the engineered floor joist that should allow for air flow.

On top of the joists is the main roof deck and on top of the deck is an additional deck that is sloped with the roof membrane on top. The wood is completely rotted out but the main deck appears OK.

In Green building techniques | Asked By Andrew Rothstein | Sep 16 15
2 Answers

Can I use Durarock for exterior sheathing behind a stone Face?

I am building a garage with 2X4's spaced 16" on two layers of block in zone 5, only a stones through from zone 6 in upstate NY. Most of the walls will be sheathed with 7/16" OSB covered with tyvec, a coraplast rain screen, and sided with various LP smartside products. The inside of the stud bay's for now will not have insulation, yet I plan on using either fiberglass batts, or blown cellulose and sheet rock in the future to finish of the inside. Also at some point I plan on using a small wood stove to heat it periodically to thaw out cars and other things.

In General questions | Asked By Dillon Vautrin | Oct 2 15
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