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2 Answers

We are building a tiny house currently with cathedral ceilings and 2x6 rafters. I have access to large quantities of rigid foam and would like to make use of it. Can I fill the rafter spaces with layers of rigid foam and spray can foam the seams and cracks of each layer as an air barrier and keep the roof unvented? I would then like to add another layer of rigid under the rafters with taped seams to prevent thermal bridging and air leakage once again. Then I would strap under that so I could still install T&G on the ceiling.

In Green building techniques | Asked By jordan Saunders | Aug 5 14
6 Answers

Hello all,

I am working with an HVAC contractor to design and install a multisplit system for our 1950s ranch renovation. As an FYI, we've done a substantial amount of upgrades to improve the tightness and insulation of the home although at 60 years old the house still isn't perfect. I'm now hoping to replace our aging ducted air handler with a new ductless system. Motivation to go ductless is driven by many factors that I won't get into in this post (both efficiency and a more practical issue of headroom in our finished basement).

In Mechanicals | Asked By Brian Gray | Jul 31 14
2 Answers

We are in Minneapolis with a 1923 Tudor house. Last year was our first winter in the house. We had bad ice damns last year and there is plenty of evidence it has had problems in the past. The second floor is a full story and consists of a shed dormer addition with no venting that I can see. The rest/original of the roof has minimal venting due to lack of (none) eves. There are only pots, but no soffit venting. Half of the story is unconditioned attic is accessible and is on the same floor as the living space. Access through a full size door.

In GBA Pro help | Asked By Joe Sweeney | Aug 4 14
3 Answers

The existing brick remains and interior wall framing would
Be new 2x4 wall.
There would be no brick mould.
I was thinking using a plywood box to line the opening
But the flashing details would be a concern
Any suggestions.perhaps using a product from tremco called exoair

In General questions | Asked By mark mahon | Aug 1 14
4 Answers

Plans also call for two 4" cans 5 feet behind sinks for lighting by the closet. The contractor wants to add two recessed 4" cans above sinks (on dimmers). We also have a large skylight in the room. Advice? Thank you!

In Plans Review | Asked By Suzanne Taylor | Aug 4 14
1 Answer

We need some honest opinion and some guidance.

We are building a small summer home in northern NH. We had a family member pass away and have had to take time away from building in order to put some family affairs in order. As a result we won't be able to complete all the work we need to complete before we leave in a week.

We don't think we have time to put up siding before we go.. However, the sheathing is mounted and taped on the house. (The roof is shingled already.)

Left as such, would the Zip System sheathing survive a New Hampshire winter without siding to cover it?

In General questions | Asked By chase orton | Aug 4 14
2 Answers

Hello,

In Energy efficiency and durability | Asked By Jeremy Shima | Aug 2 14
3 Answers

I live on Long Island in NY state close to the ocean and have two fans in my attic -- they have been there since I bought the house and I have already replaced them once BUT after reading your 10/12 article re these fans, I'm wondering if I should disconnect them. My attic floor is insulated with blown in cellulose and I have soffit vents and four normal passive vents already in the roof. I do have my air-handler in the attic along with soft duct work to various top floor A/C outlets. My home is 73' x 31'

In General questions | Asked By Dan Donovan | Aug 4 14
Answers

Sorry if you think I didn't understand your very clear article --- my mistake, since I did not mention that my roof is a "hip" roof and I heard that could make a difference since ridge ventilation may not function with a hip roof. I'm thinking that my four passive vents along with the natural vents created by two non-working attic fans may be enough? Just wanted an opinion re a 73x31 hip roof.

Thanks,Dan

In General questions | Asked By Dan Donovan | Aug 4 14
19 Answers

Hi Guys,

So after getting a $310 bill from the folks at Duke Energy last month, I decided it was time to figure out a more efficient way to cool our home. I've since asked them for their free energy audit to identify areas where I can save energy.

In Energy efficiency and durability | Asked By Jeff Lever | Jul 29 14
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