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1 Answer

Help identifying roof shingles

Hi - Can anyone provide insight into what type of roof shingles are used in the two attached pictures? I like how they present thick horizontal lines, but I can't find any shingle manufacturer websites with similar looks.  I think both of these houses were in Europe somewhere.

Thanks,
Brad

In Green products and materials | Asked By Brad White | Jan 19 17
9 Answers

Another "help me design a wall" thread

I've read wall build articles here but I'm still ambiguous as to the placement of barriers. I've also watched Dana's series titled, "Extreme 10 foot or less snowy knoll patch skiing", but couldn't find any relevant information there.

Zone 5. Inside to out: (sealed?) Drywall | 2X6 studs sealed with Ecoseal and filled with dense pack | either OSB or ZIP taped | 3" poly foam taped | rain screen, vinyl siding.

From what I've learned here this wall will need to dry to the interior.

a few questions, if I may?

In Green building techniques | Asked By Drew Baden | Dec 28 16
5 Answers

Fiberglass and Cellulose performing differently in attic

In our vented attic, we specified 18" of blown-in cellulose. In one particular location, the insulation contractors were called back to redo an area that was not covered. When it got cold outside, I noticed that the ceiling in that area was noticeably colder than in other areas. Suspecting that the insulation contractor didn't actually fix it, the builder and I went to the attic today to check. They had attempted a fix. Instead of putting cellulose in the problem area, they had installed fiberglass batts. The batts looked to be about the same thickness as the cellulose.

In General questions | Asked By Reid Baldwin | Jan 17 17
10 Answers

Construction Docs, quick review please

It's been a long journey but we're at the stage to begin construction in the next couple months. My architects did a stellar job combining our aesthetic vision with green energy design. For my own peace of mind I am hoping to have the experts here take a look at the construction details. Let me (and my builder, who will be dropping in on this thread) know if you have any major concerns with the construction details. The house is in 5A, oriented East-West (roof slope facing south). There is a wrap around porch, a root cellar beneath one side of the porch, and a walk out basement (south side).

In Plans Review | Asked By Clara Kim | Jan 16 17
3 Answers

Wet brick

I am a builder completing a renovation to a late 19th century Victorian house outside Boston. I have noticed that the brick foundation looks wet even after a prolonged period of dry weather. This mostly appears right at grade but have noticed spots above grade, as well.

In General questions | Asked By Nick Bennett | Jan 18 17
6 Answers

Polaris vs HTP Phoenix for hot water and radiant heat

Looking at using either of those products for both hot water needs and heating (with coil/air handler) in a 3000 sqft house (slab on grade, 2 story, in Southern Ontario).

It looks like 70000btu would be sufficient, but I am wondering about the pros and cons of each tank. already know most features of each product, so I am mostly asking about anecdotal reliability issues with each brand (e.g. igniter issues on the Polaris, which may have been fixed by now).

Regards,

MT

In Mechanicals | Asked By Mai Tai | Jan 16 17
5 Answers

Mineral Wool R-value by temperature

Does anyone know if there is any information available that shows the performance of mineral/rock wool by temperature?

Buildingscience.com has this for polyiso:
https://buildingscience.com/documents/information-sheets/info-502-temper...

I am wondering if there is something similar for mineral wool.

A few other links I have found -
http://www.greenbuildingadvisor.com/blogs/dept/musings/bold-attempt-slay...
http://www.energyvanguard.com/blog/59419/Big-News-The-R-Value-of-Insulat...

In Energy efficiency and durability | Asked By Nathan Scaglione | Jan 15 17
8 Answers

Vapor Retarders/Double Air Barriers

May I ask to ensure we haven't missed anything in thoughts on building our home. I was under the impression we would use Closed Cell Spray foam for the entire assembly, but my husband is now thinking Open Cell for the above grade walls. Will these assemblies work?

Unvented Cathedral Ceiling
Metal Roof/Air Gap/Asphalt Felt/ZIP Roof Sheathing/Closed Cell (still negotiating the amount)/Back Venting/USG Ultra Light Drywall

Vented Unconditioned Ceiling

In Energy efficiency and durability | Asked By Bridget Lamberson | Jan 15 17
8 Answers

What to do with torrents off the roof?

Zone 4A, East TN, annual rainfall >50" and downpours can be significant. Upslope lot.

Downspouts will tie into 4" pipe to daylight, but then what? Seems responsible to NOT discharge it down the driveway. But if I discharge it onto the slope it would soon create a local grand canyon.

There will be a 3' garden wall to provide a level grade in front of the house. The 4"gutter drains will exit through that wall in two or three places.

Any tried and true remedies?

In GBA Pro help | Asked By David McNeely | Jan 16 17
16 Answers

Passive house exterior door for reasonable price?

Has anyone come across an exterior door that provides good insulation and beefy frame that's worthy of a super insulated home but comes at a reasonable price? Any suggestions would be appreciated.

In Green products and materials | Asked By Matthew Michaud | Feb 4 13
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