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8 Answers

Blower door on a new addition: suggestions?

I would like to perform blower door testing while performing air sealing on a new addition to an existing home. This addition is not connected at one point by a single doorway, of course, it is more of an open plan configuration. The existing part of the structure is old and leaky (air wise). Air sealing and energy improvements will have to come later to this part of the house (not my own).

In Energy efficiency and durability | Asked By Dennis Dipswitch | Apr 21 13
1 Answer

How do you frame a square pitched roof?

I am roofing a 10' by 10' shed and would like a four sided roof rather than having two gable ends.

In General questions | Asked By Mark Rogerson | Apr 23 13
2 Answers

Attic insulation depth above wall is less than wall insulation

I live in Madison, WI (cold climate). I have an old ranch home with 2x6 rafters with a deep soffit overhang (2ft). The rafters are notched at the top plates and I have about 2 inches of free space between the top plate and the plywood roof sheathing (assuming I keep an inch free for ventilation). The walls are 2x4 with plywood and Homasote sheathing.

In Energy efficiency and durability | Asked By John Haushalter | Apr 22 13
2 Answers

Duct or not to duct?

I know conventional wisdom dictates that ductwork should come off the trunk line and radiate out towards the exterior walls so registers can be placed above windows. I should say that I'm talking about New Orleans where homes are raised about 18" off the ground on piers, so we run the ductwork through the attic. If it's a two story house there is no room for chases between the floors.

In General questions | Asked By roger steinbrink | Apr 23 13
6 Answers

HVAC duct design

I just finished designing a 3700 sf / 2 story high-performing house in Dallas, TX. My Manual J calcs tell me I have 28 Kbtuh heat loss and 20 Kbtuh heat gain.

In General questions | Asked By Armando Cobo | Apr 22 13
1 Answer

No garage floor insulation: What are the consequences?

Let me be up front and say that I know I made the mistake, but I'm looking for possible solutions: I built a home and installed PEX tubing in the garage slab with the intention of having a radiant floor heating system. The slab is now poured and I DID NOT INSULATE under the slab.

In Energy efficiency and durability | Asked By Dane Gowryluk | Apr 22 13
6 Answers

EF for Indirect Storage Water Heaters

Is there a standard method for estimating/calculating the EF of a boiler-powered indirect storage water heater?

In Energy efficiency and durability | Asked By Nick Sisler | Apr 22 13
27 Answers

Disappointing energy audit: please comment

I received the results of an energy audit done January 18, 2012, along with a proposal for work to be done, which I reviewed in greater detail after the auditor left. I emailed him with my questions, but he hasn't responded. I’d appreciate anyone’s thoughts on how good an audit this is. Most of the proposal makes sense, but one concern is the reference to air sealing “around the flue for DHW /furnace with aluminum flashing and fire caulk.” I have electric baseboard heat (yes, I’m the one). Also, the auditor said the potential yearly savings (for the $4,110 attic project) is $669.

In Energy efficiency and durability | Asked By Carol Oblas | Feb 25 12
3 Answers

Sealing no-flange windows in a REMOTE wall retrofit

I’m planning to insulate my 60 year old house from the exterior using the REMOTE approach.
We can’t afford to replace all the windows so I hope to re-use the existing windows which are all wood framed but show no signs of rot. Some are single pane and some are double pane and I believe they’re all no-flange windows. We’ll use a combination of interior and exterior storm windows to boost the thermal performance of these old windows.

In Green building techniques | Asked By Mark Fredericks | Apr 22 13
3 Answers

Looking for a small garden window that vents from the top or front

It's going into a tight L-shaped corner of the house, so it's confined, so in actuality don't really need a side window. Also a possibility would be a 90 degree box bay window, but I only want a window 2'6 x 5'0. Another restraint is I am in California which is fire prone, so would prefer to stay away from a wood exterior frame. My internet searches have been fruitless and frustrating.

Thanks for your help

In General questions | Asked By Lisa Young | Apr 21 13
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