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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
1 Answer

Are there any pre-designed house plans that feature ICF walls & SIP roofs?

Looking to see if there are any plans out there that feature ICF walls and SIP roofs? Or is this something that has to custom designed by an architect?

In PassivHaus | Asked By Peter L | Sep 29 15
12 Answers

Bleaching mold on sheathing?

I'm building our house in Wisconsin, where we had a very wet June with 10 inches of rain while framing. The interior side of our 1/2" plywood sheathing has dried but has developed spots of mold. I'm considering misting it with a bleach mixture and letting dry well before insulating, rocking etc. The finished wall system will dry to the exterior, with 3" of Roxul Comfortboard IS on the exterior and Roxul comfort batts in stud cavities.

Any opinions on whether this is necessary? If yes, how strong should my bleach solution be?

In General questions | Asked By Edward Krause | Oct 4 14
12 Answers

Thermal Break In Stud Walls

Hi,

Just found this site 2 months into a renovation of one part of our 45 year old home. We have taken the main floor of the house back to stud/rafters and are now at the insulation stage. The original plan was Roxul with a vapour barrier in the walls with blown in ceiling, but we decided to go with 2lb closed cell foam in the walls to try and close the gaps and make the space more airtight and comfortable.

In Energy efficiency and durability | Asked By Richard Heatley | Sep 30 15
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