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2 Answers

Concrete over above-grade rubble foundation

I was visiting a home the other day, primarily in search of no/low cost energy improvement opportunities, when the customer asked about insulating his rubble foundation. I recommended ccSPF of course with a poly lining on the floor and up the sides of the walls to create an air and water tight assembly.

In Green building techniques | Asked By Mike LaCrosse | Feb 4 13
1 Answer

Wall insulation/ventilation region 6 A

I am wondering if anyone has come up with a formual that calculates the minimum stand off for a canadian rain curtain that take into account the exterior wall insualating materials, r value, max. wall ht and building location/elevation?

I am also trying to locate some information relating to any benifits to reduced energy consuption a raincurtain might add. Feedback from my clients has been all over the place on the retoros we have completed and they most likely also include upgrades to the roof & attic insulation at the same time



In GBA Pro help | Asked By Matt BLANC | Feb 2 13
1 Answer

Best materials to temporarily insulate a tile floor?

Hello - I have a sunporch with tile on the concrete pad. The porch was originally a screened in room but we like to use it year round now. I am adding foam insulation to the crawl space in the room and also in the walls. The windows are fairly energy efficient. The biggest challenges are 1) getting more heat into the room without using a space heater if possible and 2) making the floor warmer.

In General questions | Asked By Margaret Thomas | Feb 3 13
1 Answer

Outtie window details

I believe my windows are an outtie type window. I had initially thought they were innie style but now think otherwise, which is why I have provided the accompanying link.


This link will take you to the window information.

In General questions | Asked By Aron Robinson | Feb 3 13
5 Answers

Heat pump compressor in unconditioned /isolated / vented basement?

Could this work in cold climate 5? Bsmt floor Sealed and thermally broken from upstairs units. Would a Vented basement make that possible?

In GBA Pro help | Asked By matt berges | Jan 30 13
3 Answers

I have a propane-fired forced-air heating system

I have a propane-fired forced-air heating system with a Honeywell Chronotherm IV thermostat control system. The consistent recommendation I read is to reduce the setting for nighttime by a few degrees and return to comfort level for daytime in order to be more energy efficient.

In Energy efficiency and durability | Asked By Gene Byrd | Jan 31 13
4 Answers

Why aren't chilled ceiling tiles/panels used to cool rooms in North America?

In the Henry Gifford interview, he said "You should add or remove heat by moving water or refrigerant only, not by moving air around." This reminded me of articles I had read about European HVAC systems that use chilled ceiling panels to cool rooms and have separate dehumidification systems. This sounds like a very efficient approach - especially in hot humid environments. Why don't you hear more about this sort of system in the US?

In Mechanicals | Asked By Scott Tenney | Feb 1 13
6 Answers

Installing outie windows with 2-inch exterior Roxul board

Since we originally planned to install 2" of foam board over the exterior sheathing with house wrap over that. Our architect specified outie windows mounted on a plywood box extension (2" out from wall).

Now that the Roxul Comfortboard IS is available we would like to use that instead of foam, but it can't be taped and sealed like foam (making window sealing problematic at that layer) and since the compressive strength is less I imagine the window flanges should not be attached through it anyway.

In Green building techniques | Asked By Patrick Walshe | Nov 7 12
2 Answers

What width should soffit overhangs be in order to use oreintation specific glazing?

What is the minimum industry standard for the width of soffit overhangs in order to take advantage of orientation specific glazing for both triple pane windows and slider/patio doors located on the south side of a house? Although I want to take advantage of passive solar heating, I do not wnat the house to be overheated in the summertime. I would like the soffit overhangs to provide adequate shading during the summer here in Connecticut.

In General questions | Asked By JOSEPH POLAND | Jan 31 13
7 Answers

Panel-type ‘vapour barriers’ and the British Columbia building code

Is anyone aware if there is a provision for the use of panel-type vapour barriers, e.g. OSB, in the most current B.C. building code book?

I guess I am referring to the 2006 edition, as I am not sure if the 2012 edition has been released yet.


In Building Code Questions | Asked By erik olofsson | Jan 30 13
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