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1 Answer

Ice and Water Shield on unheated garage roof

Hi. This may be a silly question, but I am wondering whether ice and water shield is recommended for the eaves of an unheated garage? Also, is there typically a minimum distance from the drip edge on the house's roof decking? I've come across 2' beyond the exterior wall? Grace makes an "HT" version. They claim that it is used for metal roof applications. Is this necessary in my case; Maine and light colored metal roof? Thanks.

In General questions | Asked By Matthew Michaud | May 18 14
5 Answers

Can one place rigid foam over existing panel siding?

I recently purchased a '70s modified A-Frame cabin at Lake Tahoe w/ 2x4 framing.
The exterior walls are constructed with vertical 4x8 redwood panels directly nailed to the studs.
There is no insulation.
The interior walls are sheet rock covered with '70s simulated walnut paneling.
The windows are single pane sliding aluminum framed,
as are the two sliding glass deck doors.
The structure is 24' x36', 2br/2bath, loft...1200sqft.
The county building dept requires permits and retrofitting to replace siding to the studs.

In Energy efficiency and durability | Asked By Whitney Johnson | May 17 14
6 Answers

When adding foam insulation to a roof assembly, is there any reason to bring it significantly past the exterior building line?

The assembly I am asking about is:
I joist rafters filled with dense pack cellulose/sheathing/4" polyiso/sheathing/waterproofing/metal roofing.
Is it ok to stop the foam layer at the building/insulation line to save material on the gable and eave overhangs?

In Green building techniques | Asked By stefan straka | May 17 14
1 Answer

1980 isolated gain passive solar with sunspace and crawlspace

We are considering purchasing a passive solar home built in 1980 from reclaimed lumber and glass with isolated sunspace. The home is 2 story 1700 sf open floor plan. It has windows on all sides, upstairs have been replaced with newer double pane but downstairs are original. They seem to be 2 panes of glassheld in a frame with very durable adhesive. Sunspace on S side is single pane glass and brick floor w about 1/2 of 5 x 20 sf area taken up by planting bed/soil. The top of it is slanted and is also glass, and had shade cloth on it. Access to about 3 ft. crawlspace is from sunspace.

In Energy efficiency and durability | Asked By Susan Geer | May 18 14
9 Answers

Poor attic ventilation, a.k.a. mold on rafters

Hello all,
Here are the basic details:

- I have a 23 year old 2-story frame house in the mid-Atlantic region (Zone 5). The roof was replaced last year, and there is a ridge vent, soffit vents at intervals and baffles inside the attic to allow unimpeded air flow into the attic.
- The bathroom exhaust fans are vented off to side camp vent on the side off the house. Though the fans seem to be running, I have a serious suspicion that they aren't actually pulling in anything.

In GBA Pro help | Asked By Kach Kidibba | Apr 23 14
4 Answers

Spruce versus pine species for exterior siding

Hi. I was originally planning on using horizontally placed pine boards for my house siding. Due to the time of year, there is a shortage of local pine and will not be accessible in the time frame I need. My local wood mill can provide spruce. He's used it on his house and it has held up nicely. My plan is to back prime and use a solid stain on the exterior regardless of species (and use 3/4" strapping behind it. Any experience with using spruce, its qualities and characteristics and is it good for this type of application? Thanks.

In Green products and materials | Asked By Matthew Michaud | May 16 14
2 Answers

Can anyone find a long 10-12" screw for under $1.37?

Looking for the best price for long screws with beveled #3 Phillips or 25/30 Torx head. Going through plywood furring strips and 8" of used EPS, plus sheathing into 2x4 studs. When I did my house years ago I had to pay $2 per screw. Sure would love to find something less expensive for a friend's house. I'm not a contractor but help a lot of folks warm up their house.

Thanks for any input,

In Green products and materials | Asked By Paul Kuenn | May 17 14
3 Answers

Access denied

I asked a question. Got an email saying I got some responses, clicked the email link, was able to view the responses.

I answered the responsed, got another email saying I got another response, clicked that link, now it says 'access denied'

Went to home page, clicked 'show all questions'/'general questions', says 'access denied'.

What is the problem ? I read where the Q&A section is free.

Jim Wright

In General questions | Asked By Jim Wright | May 16 14
7 Answers

Ventilation heating and cooling a PH

A Passive House requires a mechanical ventilation system and a heating/cooling system (Zone 5A).
What is the most cost effective method of achieving this? Since we will be putting in ductwork for the ERV/HRV system, it only makes sense to use this system to distribute warm and cool dry air, as opposed to having the ductwork and mini splits hanging on the wall. Also, we would have to condition (de-humidify or heat) the incoming air before it hits the heat exchanger anyway.

In PassivHaus | Asked By Steve Young | May 5 14
9 Answers

How many BTUs of energy do I lose per cfm leakage to outside in my ducts?

I would like to calculate how much energy/money I am losing from duct leakage outside my building envelope. Is there a way to quantify how many BTUs I am losing per cfm of leakage in heating and cooling?

In Energy efficiency and durability | Asked By Chaz Steffen | Mar 10 14
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