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1 Answer

Reducing heat loss from existing ductwork in an attic

I am a remodeling contractor in Connecticut attempting to come up with a thorough plan to eliminate the causes of ice damming and heat loss in a customer's attic. Existing insulation is fiberglass batts (R-38?) pretty carelessly installed between the joists and compressed to 9". The air handler and ductwork are in the attic and leaking like mad. Soffit and ridge vents are in place.
What I'm clear about doing-
1- Sealing penetrations in the attic floor.
2-Making a rigid insulation cover for the pull down stairs.

In Energy efficiency and durability | Asked By James Ambrose | Mar 11 14
11 Answers

HVAC for a single level "Pretty Good House"

Hi all

First discourse on the forum--I've been reading it incessantly and now it's time to get involved. Over the next few months, I'll be soliciting advice and opinions on various aspects of a new house we are building for retirement located in Hood River, Oregon. I thank you all in advance.

In Mechanicals | Asked By Matt Mesa | Feb 21 14
13 Answers

What is the best sheathing product in NA ?

I would like to know what you believe is the best sheathing material for use on new homes/building for specific construction type ?

Criteria i would like to consider are :

1- carbon/green/energy/environmental impact of product usage and manufacturing

2- mechanical properties of the sheathing

3- insulative value

4- water/moisture resistance

5- air permeability/ability to dry etc..

( am i missing an important point? )

The types of system to consider are of high performance only.
I would suggest discussing for -

In General questions | Asked By Jin Kazama | Mar 6 14
1 Answer

Avoiding cracks

We're in the early design stage for a new house in Maine, zone 6. What can we do to avoid the cracks in plaster and screw heads showing through the plaster skim coat? Using dry construction lumber should help, but would leaving the framing open for a while help or hurt?
Heidi' s recent experience with moisture in her walls in Vermont has me especially concerned.
We haven't gotten to the point where we're deciding on how to frame the walls, but any advice on heading off the problem will be appreciated.

In General questions | Asked By stephen sheehy | Mar 10 14
2 Answers

Air Tight

I know the answer to my question has probably been asked before but I cannot seem to find it on hear. Anyways a 2x6 wall. Plywood on both sides, sealed cavity. I plan to seal the inner wall with gaskets from Conservation Tec. Do I need to seal the outside sheeting, by that I mean do I need gaskets under the sheeting hear as well or just the inside.


In Energy efficiency and durability | Asked By Paul Fowler | Mar 4 14
1 Answer

Should I spray foam a cobblestone foundation?

The interior of my cobblestone foundation needs to be repointed. No stones are loose, but there are deep pockets in a lot of areas.

As part of a complete gut and remodel taking place this spring, several professionals have suggested that instead of repointing with mortar, that I could simply have the insulators spray the stone with foam as they are insulating the walls and ceiling.

In Energy efficiency and durability | Asked By Jesse Watras | Mar 9 14
7 Answers

Do 5/32" and 3/16" suffice as window panes?

Do 5/32" and 3/16" suffice as window panes? Can they affixed to each other to achieve greater thickness to abide by codes?

I have a bunch of 6 ft by 7 ft glass panes that are 5/32" and 3/16" inches thick, I also have shipping containers I am considering furnishing into a commercial business/cafe. Please take note I am an absolute novice in construction at almost every regard and still in the information gathering stages, so I am trying to acquire as much information as possible before I need to spend money and if I can make use of what I already own, that can save me lots.

In Building Code Questions | Asked By human being | Mar 9 14
6 Answers

Heat pump clothes dryer finally coming to US

Looks like the stagnation in dryer efficiency is finally starting to give way to progress:



Coming summer 2014, supposedly, with cost of $1500-1600.

In Green products and materials | Asked By Nick Welch | Feb 25 14
8 Answers

Thermally breaking a threshold

How does one handle door thresholds on the lower floor so that the floor grade slab doesn't become a thermal bridge at each exterior door?

In Green building techniques | Asked By Peter L | Mar 6 14
4 Answers

Exposed steel beam that's causing a thermal bridge

I have a very contemporary style house that probably isn't the best for chicago's cold winters and hot summers.
There are exposed steel beams that penetrate through to the inside of the house and have cause a lot of moisture issues.
i have used closed cell spray foam on the inside of the house around the beams, but is there any way to cover the beams on the outside to further prevent thermal bridging?
the beams are both vertical and horizontal.
i've attached a picture of the house.
thanks for your help!

In Green building techniques | Asked By simon y | Mar 7 14
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