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2 Answers

Should I vent a suspended floor over an uninsulated slab?

I live in zone 7. We are building an addition to our house in our barn. We have put 2" of rigid insulation in between the floor joist, seal with spray foam and fiil space under joist with cellulose. Our friend told us we should place a vent under the sub floor to prevent condensation. I'm concerned that putting in a vent will create a draft under the floor. Do we need a vent?

In Energy efficiency and durability | Asked By Justine Wysong | Jun 26 12
1 Answer

What's a good low-VOC shingle that lasts, say, 40 years?

I'm thinking 5 sun tunnels and two skylights would be easier to install on a shingled roof, also the dormer maybe.

In Webinar Follow-up Q&A | Asked By Catherine Tilton | Jun 26 12
9 Answers

Marvin Integrity triple-pane glass?

I was poking around on the NFRC website looking up some ratings, and I noticed under Marvin, they have an Integrity window option in a triple pane window. The ratings are quite good (u= low .20-23) which is quite a bit lower then Marvin's tripane, which tells me they are using fiberglass instead of aluminum clad.
Does anyone know anything about these, and if they do exist currently? I have search everywhere but can not find anything about these other then on the NFRC website.

In Green products and materials | Asked By Jesse Lizer | Apr 28 12
5 Answers

Can I install 1/2 rigid foam to framing and then attach OSB through foam?

We are installing R & R red cedar shingles.

Also, what about Tyvek?


In General questions | Asked By richard difabio | Jun 25 12
3 Answers

Is it possible to replace damaged siding without having to replace the underlying foam board insulation?

We have hail damage to the vinyl siding that requires it to be replaced. The underlying foam board insulation does not appear damaged. Can we just remove and replace the siding without having to remove and replace the insulation? Or will the nail holes from the prior installation cause leakage?

Thanks for your help in advance.

In Green building techniques | Asked By Fan Davro | Jun 25 12
3 Answers

Podcast problems

Could someone walk me through the process of downloading a podcast into iTunes? I've mastered Right-Clicking on a Mac, I've clicked on eveything in sight, and I still can't seem to download a podcast.

On a related note, if the excellent Green Architects' Lounge is in iTunes, why can't the rest of the podcasts be? I spend a good chunk of my day in the car and would be ecstatic if I could listen to some of the other content via my iPhone.

In General questions | Asked By David Albert | Jun 22 12
4 Answers

Which one is better: Using salt-based water softeners or salt-free water conditioners?

I am building a new house and don't know which one to buy.

In General questions | Asked By tania jalil | Jun 17 12
6 Answers

Should I caulk the bottom of vertical cedar siding?

A contratoor who replaced some wood pecker damaged vertical cedar siding boards recommended that I caulk at the bottom of the lowest boards as a way to lessen air inflitration into my home. House was built in 1987 and has Celotex sheathing on the outside of the stud walls with the cedar siding over that. I think that caulking as he recommends will only trap water behind the siding that can get in where the boards overlap.

In Energy efficiency and durability | Asked By James Manor | Jun 22 12
2 Answers

New construction crawl space design

Getting ready to pour my foundation with crawlspace. for a small building. Site appears well drained. This is in zone 6.

3" XPS will be put on outside of foundation with drains installed at footings. Not planning on insulating the main floor of living space. 2"x 6" construction with 3" XPS all the way up the outside with blown in cellulose in stud wall. (24" OC construction).

In Energy efficiency and durability | Asked By brenda field | Jun 24 12
2 Answers

Do I need Tyvek?

I'm retrofitting a 1952 ranch stye house in Connecticut. The wall sheathing is 1x6 tongue and groove. I'm going to put two layers of 1 3/8" polyiso on the exterior.

Sheathing is now covered with tar paper. I'm thinking of taking of the tar paper (its damaged on a lot of areas) then install polyiso over the sheathing without any Tyvek - Each sheet of polyiso will be caulked around the perimeter. Interior walls ares stripped and will be dense packed with cellulose.

In Energy efficiency and durability | Asked By Walter Gayeski | Jun 24 12
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