Community: GBA Pro help

[Click map to enlarge]

Please register for a free account or sign in to ask and answer green building questions.

The usual rules of courtesy apply:
1. Be nice.
2. If you can't be nice, be polite.
3. If you can't be nice or polite — well, please be brief.

To attach a photo or illustration:
Under the box labeled "More explanation," look for the words "File attachments."
Click that, and you should be able to attach a photo.

Thanks for joining the conversation!


10 Answers

What is the solution for our brick chimney/ceiling?

I saw the article by Joe titled Efflorescence = Water Damage — Building Science Podcast and had a question relating to possible efforescence on my chimney and walls/ceiling in my home. I own a farmhouse built in 1900. It has an old chimney used to vent our boiler and hot water heater. We have a mudroom that connects the garage to the house and within the mudroom that has the roof above it. The mudroom has a part of the chimney that has been finished to create a wall.

Asked By Page Hyler | Aug 2 13
3 Answers

Confused about new roof / decking / insulation job

Hi, my name is Todd and I'm very confused about what to do. My insurance company has agreed to replace the roof, including the decking (sheathing), and ventilation, in my cape cod home in Dayton, Ohio. I have a refinished, vaulted second floor, with a small attic peak. All of this was there when I bought the home 3 years ago (I think it was done in 1998). Thinking this would be a chance to improve the insulation I began to investigate what to do. Now I am completely baffled, both online sources and contractors have given me such divergent advise.

Asked By James Todd Uhlman | Jul 30 13
6 Answers

Is this what dense-packed cellulose is supposed to look like?

Hi all,
I'd be interested in other folks' opinion on this. I paid an insulation contractor to dense pack an unvented vaulted ceiling in my home a little over 2 years ago. I started experiencing some pretty bad moisture problems in the past month or so with the ceiling and exterior soffit. A couple of the seams of the sheetrock inside the house are starting to show on the ceiling and the outside soffit drips even when the sun is out.

Asked By Tony Fiore | Jul 30 13
1 Answer

New steel building

I live in Dallas TX, zone 3A.
I am in the planning stage of a steel building. The building will be ~2000 sqr feet & 16' walls. I plan to section off one corner of the building to be an office space but plan to cool the entire building, 2 zones. If orientation matters the large doors will face almost directly north, with a west wall that will get direct late day sun during the heat of the summer.

The standard wall construction used by the builder I am working with is constructed like this. From the outside in.

-Steel sheeting

Asked By Jeff Kirkpatrick | Jul 31 13
14 Answers

Zone 5/6a Vinyl Residing - Double Blueboard, Wrap?

As a follow up to:
http://www.greenbuildingadvisor.com/community/forum/energy-efficiency-an...

Dow SIS is not available in this area, so we will insulate the walls as they are:

2x4
kraft faced fiberglass insulation (very, very thin)
two 1/2" layers of fiberboard as sheathing
one 1/2" layer of blueboard

My thought is to dense pack cellulose in the walls, tape the existing blueboard, add a second 1/2" layer of taped blueboard, possibly wrap, then side.

Asked By J Heckmann | Jul 14 13
2 Answers

Interior sheathing with outsulation?

I am designing and building a tiny house on wheels (in climate zone 6) and the wall assembly I have come up with is a little bit unconventional. I would like to use the PERSIST method, but due to size limitations this is not possible. The wall section I have come up with is a little like PERSIST though:

From interior to exterior:
-7/16” OSB (sheathing & interior finish – applied using caulk)
-2x4 wood studs @ 24” o/c filled with 3-1/2” XPS
-3” XPS over the studs
-Solitex MENTO 1000 WRB (38 perms) -taped continuous air barrier
-vertical ¾” furring strips
-open joint timber cladding

Asked By Travis Marttinen | Jul 20 13
4 Answers

Horizontal roof strapping for ventilation?

Hello,
I am building a 16'x24' house in Alaska, 12/12 gable roof using 2X12 rafters, with a cathedral ceiling. A friend has recommended venting the roof by strapping the rafters horizontally with 2x4's at 16" o.c., thereby allowing cross ventilation from gable to gable. The roof would be sheathed on top of the 2x4's. I haven't been able to find any information on this technique on the web.

Asked By Justin Smith | Jul 15 13
1 Answer

Geothermal closed-loop heat pump vs. lightning

I live in central Oklahoma. My house was hit by lightning and we have hail damage.AC (among other things) is out.

The HVAC guy has experience with the geothermal system, installing, etc, but not with lightning strikes. They have already replaced two circuit boards...still not working.

Catastrophe insurance adjuster has experience with lightning, but not with geothermal heat pump system. His bottom line...can the unit be repaired or will it need to be replaced?

I just NEED coolness. Please help this very hot early 50's wife!!!

Any help is appreciated.

Asked By tami weathers | Jun 18 13
61 Answers

Geothermal nightmare

We truly hope you can help us. We had a geo-thermal closed loop system (into the river) put in and it went online March 2012. WaterFurnace Super DeHeater, 4 Multi-Aqua mini-splits (included for AC) and an air-handler (included for AC). 3200 sq ft home with baseboard and in-floor radiant heating. $34,000 and we have had nothing but problems.

Asked By Colleen Nicholson | May 30 13
1 Answer

I have a home with two stained walls

I have a home with two stained walls. One wall is on a corner to the house. The other is in a angle (upper) near the roof.
I'm sending some pictures so you can see the stain.
I have cleaned it up and it comes back again.

Asked By blanca goertzen | Jun 10 13
Register for a free account and join the conversation


Get a free account and join the conversation!
Become a GBA PRO!