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9 Answers

Fiberglass insulation and the air barrier

Hi Martin, I thought it would be best to move this discussion from the unrelated post. My apologies to Jason. Just so others know what started the discussion, I cut and pasted the Minnesota code requirement below.

Provisions for energy, energy conservation, or references to the
International Energy Conservation Code are deleted and replaced with
Minnesota Rules, Chapters, 1322 and 1323, Minnesota Energy Code.

R402.1.1.7Fiberglass batt interior insulation.
Fiberglass batt insulation shall comply with the following:

Asked By Randy Williams | Jan 24 18
3 Answers

Kitchen Hood

I’m in BC. I’m trying to figure out if a kitchen range hood is compulsory as I have been led to believe. I tried reading some of the government building code docs but they are not written in plain English and I really couldn’t figure out what they were burbling on about.

Asked By TracyPTM | Jan 23 18
18 Answers

Duct board repair/starter collar holder help

A contractor who installed my heater wrong/ I had to replace it after 12 years.
is now fixing my duct system to make me happy, (per them)
the duct system is duct board 26.5" wide 15.5" tall that runs like an L
around say 13 feet then L then say 75 feet long.
it dips down in the middle then goes back up but its all the same size.
from that flex taps off the box to the vents along the way and at the end they ran a 10" scoop to 8x8x8 and then 8x6x8 so its two 8 inch and one 6 inch flex at the vary end of the duct board.

Asked By Chicken123 | Jan 21 18
6 Answers

New home building in Northern California: Some wall sheathing ommitted?

Hi All,
I live in Northern Calif about 50 miles south of Sacramento. Hot in the summer, usual NorCal rains and cooler temps in the winter, rarely below freezing. I bought a new construction home from a fairly well-known builder in a senior development which will have 3000 homes soon. They build these homes in about 90 days. I am watching a new construction home across the street being built.

Asked By DDnorcal | Jan 9 18
8 Answers

Code official wants polyethylene for interior of EPS insulated wall


I'm planning a new house construction in New Brunswick, Canada and am looking for some input from the knowledgeable folks here. The house is located in the southern part of New Brunswick. (Climate zone 6A I think)

My planned wall assembly is:

3" of EPS foam on the exterior (My builder is recommending 3" Silverboard XS, which claims to be R-5/inch)
OSB Sheathing
2x6 framing with Cavity Insulation - cellulose or blown fiberglass
Interior Drywall w. Paint (Air barrier)

Asked By Chris Burpee | Jan 10 18
11 Answers

Attaching siding to 1x4 battens (furring strips)

I am interested in having 8" smart side lap installed on a rain screen made up of vertical 1x4s. The LP application guidelines say the following: The framing shall be of adequate thickness to accept one and a half inches of nail penetration. I am using one and a half inch roxul and the stud spacing is 16". I feel confident this would work fine but how many contractors will do an installation that doesn't follow the manufacturer's policy. Also would this be a violation of general building code? The nail penetration would be three quarter inch.

Asked By Cragged | Jan 8 18
2 Answers

Was a WRB required under Hardiplank siding in South Carolina in 2000?

Just had a home inspector blow a deal because the house built in 2000 wasn't wrapped under the hardiplank siding. I can't imagine it passed inspection if it was required by code.

Asked By Adabner | Jan 5 18
3 Answers

Vapor Barrier

The state of Minnesota makes amendments to the building code. I have a question on one of their changes. The Minnesota code reads:

A vapor retarder and air barrier shall be applied to the warm in winter side of the wall with a permeance of not greater than 1.0 in accordance with ASTM E96 procedure A and a permeance not less than 0.3 in accordance with ASTM E96 procedure B meeting the following codes...

The code goes on to detail how to attach and seal the vapor and air barrier to the framing.

What is the difference between ASTM E96 A and B?

Asked By Randy Williams | Jan 2 18
3 Answers

BEOpt and IECC 2015

Does anyone here have experience submitting BEOpt data to show IECC 2015 compliance? Having already built a BIM model and a BEOpt model, and insomuch as I am planning to build well beyond code minimum, I believe that somewhere hidden in my BEOpt data must be a route to energy code compliance... I just have to figure out how to submit it.

Asked By Ethan T ; Climate Zone 5A ; ~6000HDD | Dec 22 17
5 Answers

Radon vent

Can a Radon vent be tied, legally, into a plumbing vent or must it remain separate through the roof?

Asked By Jerry Liebler | Nov 17 17
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