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9 Answers

Why are these wires putting burn marks on paper-backed batts?

I've seen two houses in the past couple of weeks where wiring is leaving burn marks on paper-backed batts (see pics). I found these because I was snooping around looking for air leaks. I've always been told that insulating around wiring is fine if it's modern Romex type wiring, and that knob and tube is the only thing to watch out for. So finding these two examples is pretty terrifying.

In General questions | Asked By Peter Rogers | Mar 15 15
1 Answer

Is there a code requirement for residential boiler piping insulation?

Is there a code requirement for residential boiler piping insulation?

If so, what is the R-value for pipes in conditioned space? And unconditioned space?

We live near Baltimore, MD.

In Building Code Questions | Asked By Brantley Gent | Apr 30 16
10 Answers

Best wall system for Vermont?

I am building a modular home in Chittenden County Vermont and have been debating what type of wall system and insulation combination will be best. There are three wall systems under consideration, but I am open to alternatives.

1) 2x8 framing 16" on center with Roxul cavity insulation (R30) and Thermalstar sheathing w/1.5" EPS foam (R7.5) for total R-value of 37.5.

2) 2x6 framing 16" on center with Roxul cavity insulation (R24) and 2" polyiso rigid foam (R13) for a total R-value of 37.

3) 10" double stud 2x4 wall, BIBS cavity insulation and Zip sheathing for total R-value of 39.

In Energy efficiency and durability | Asked By Craig A | Apr 29 16
12 Answers

Best furring strip over exterior foam to hold Hardie siding?

Ok, this has come up before and I want to get final recommendations from those who have done the work in the field as my foam board is almost finished.

I have attached 2.5" of recycled EPS to the exterior over my drain wrap. Windows are INNIES and are flashed well. As a point of fact, the Tyvek brand tape worked and adheres excellent to the EPS. I have some 3M all weather tape but the Tyvek tape works great and is easier to work with.

In Energy efficiency and durability | Asked By Joe Suhrada | Apr 26 16
3 Answers

Another cathedral ceiling and insulation

Greetings, I have a home in climate zone 4c that desperately needs some insulation, last summer I was seeing 90+ interior temps. And burn 4 plus cord a year to stay warm.

Built in 1954, the whole house is vaulted ceilings. All 2x8 cavities, 16" oc. There is continuous soffit venting and no ridge vent. About 2" batt insulation.

I plan to reroof to achieve the r value I want. My plan was roxul mineral wool r30 batts in the bay's, resheet roof with zip sheeting, followed by 3" polyiso.

In General questions | Asked By Scott Brzoska | Apr 29 16
1 Answer

Perlite for walls vs Dense pack Cellulose

Hello-
Has anyone used loose fill perlite for wall cavity insulation on wood framed exterior wall. I am interested in the least toxic insulation for the walls. But I am a little concerned about the moisture retention capabilities of perlite. Does the perlite dry out quickly in a normal framed wall?

Also, does dense pack cellulose have less capacity for moisture retention?

Lastly, has anyone used loose fill perlite for attic insulation.

In Green building techniques | Asked By edward kramer | Apr 30 16
9 Answers

Hot water heating

Need some advice on my domestic hot water plan...
very long and narrow ranch house... well water. good pressure..

Master side of the house has Master bath. (with soaker tub), 3 other full baths and a half bath.... all fairly close to each other...

kithcen side is very far away.. (75-100 feet away) ... has a full bath , half bath, and kitchen sink...and a washing machine.

On Master side i am planning on a large heat pump water heater( i have a good utility room for it) attached to a manifold with 1/2 lines to showers, 3/8 lines to sinks and toilet.

In General questions | Asked By Dean Sandbo | Apr 13 16
1 Answer

Green Building Advisor Q&A

Thank you to those involved with the elimination of all of those asian-alphabet, unreadable, virus-like comments that had taken over this site this past week. I enjoy checking out the question section of this site when time allows, and when I saw those "comments" I moved on to other things. THANK YOU !!!

In General questions | Asked By KEVIN ZORSKI | Apr 29 16
2 Answers

Using below grade SIP for full basement

We are planning our single level lake home in northern Minnesota. 1200 sq. ft. walkout. 11000 HDD Zone 7.

I'm fully aware of the traditional basement options; block, poured, and ICF their plusses and minuses having worked in the masonry field when I was younger.

Question: Has anyone had any experience using SIP's for below grade?

Thanks!

Steve

In Energy efficiency and durability | Asked By Steve Lenertz | Apr 12 16
6 Answers

Any vented attic air sealing tricks? And recommended R-values? Blown fiberglass?

I am building a home in climate zone C4 and am getting ready for insulation at last. I have wrapped the house with a layer of 1" xps already, but am getting ready for the rest. The local insulation contractor is pushing blown fiberglass over blown cellulose, what do you guys think about this, I have heard it settles less. Most of the house has cantilevered scissor trusses. Do you guys have any good practices for air sealing around all of the electrical lighting boxes (not cans) that I have installed in the ceiling?

In Energy efficiency and durability | Asked By Kail Zuschlag | Apr 28 16
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