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6 Answers


I am having my roof replaced. My roofing company recommend that I install the ridge vent. They said that since my ceiling is vaulted the gable vent are just decoration and not actual ventilation. Is this true?

In Green building techniques | Asked By Diana Tran | Oct 28 15
11 Answers

When do you need to add mechanical ventilation?

When tightening a house, at what point do you need to add mechanical ventilation?

In Green building techniques | Asked By Zane Matthews | Oct 31 15
2 Answers

How much rainscreen insulation can be put into a brick veneer wall?

I am working on some wall sections and details for a commercial/institutional project with masonry walls where we are considering thick walls and deep inset windows to create some shading. Is anyone familiar with any sort of masonry anchors that would allow us to use 6" or more XPS rainscreen insulation in the cavity? Thanks!

In Energy efficiency and durability | Asked By Joseph Yount | Oct 30 15
7 Answers
1 Answer

Insulate Basement - Remove Windows?

Planning to insulate my basement. Step one is to decide what to do with the existing windows. There are 4 wood windows at each corner of the north and south side. The 2 on the north side are shown in the pic. They are at grade and have attracted termites in the past. The basement is storage and mechanicals only and is just over 6ft deep with 2ft above grade with the windows. There is a bulkhead entrance for access and any necessary ventilation should it ever be needed. My first thought is to remove them and make it look like they never existed.

In General questions | Asked By Shawn Shumaker | Oct 30 15
1 Answer

Interior insulation for rim joist covered with rigid exterior foam

I plan to use R-20 exterior rigid foam. My foundation will be Superior Walls, with R-20 insulation. Should I add insulation to the interior of the rim joist in Zone 5? If so, what's the best option? I understand that having rigid foam on both sides of an assembly can be problematic, and that fiberglass can be problematic in a rim joist. Would the exterior rigid foam make fiberglass or mineral wool viable? If not, what would be my best option? Open cell spray foam?

In Green building techniques | Asked By James Timmerberg | Oct 30 15
2 Answers

Do I really need an Air Scrubber?

I have a gas forced air furnace, fairly new (5 yrs). We installed a humidifier, a media air filter by Honeywell, a hepa filter system by Fantec which has 3 filters including a charcoal filter along with a UV light system by Airpal. Now I am being told that we should replace these with the latest and greatest air scrubber by Air Scrubber Plus. Is this just another means of obtaining cash flow or are my products outdated to the point of replacement?

In General questions | Asked By Ron Trzcinski | Oct 30 15
2 Answers

Health risk of 2x6 wall with 1" exterior rigid foam, cavity filled, and inteior stud wall strapped with poly membrane?

Hello ... I have a quick question on the practicality of the health risk posed by trapping moisture within a 2x6 stud wall cavity. There were condominiums built in our area, 1 which I happened to live in for a few months, that had the exterior walls built in the fashion of having brick (lower units) / stucco (upper units) followed by 1" of Poly Iso foil faced rigid foam on the exterior with the cavity filled with fiberglass batt-insulation and then they ran plastic sheeting on the interior of this stud wall.

In Building Code Questions | Asked By Jon R | Oct 30 15
24 Answers

NON-Flanged (Insert) Window Replacement + Flashing

I changed out my rotten wood framed windows for all vinyl ones. The original wall was aluminum siding. I fixed the rotten sheathing, applied house wrap. Then strapped (furred) the wall with plywood. The pictures show how I flashed the rough window openings. I did NOT want flanged windows because I did not want to have to disturb the siding when the window needs to be replaced in the future (far into the futuer I hope). I see a lot of articles on how to flash flanged windows, but I never see methods for Insert (non-flanged) ones.

In Green building techniques | Asked By Alexander Sanita | Sep 28 15
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