Efficiency / Discussions

I have many issues with my house where should I start?

My house was built in the Late 1940 - early 1950's, it is a farm buglalow with an addition in 1973, a poured concrete basement and concrete block foundation ad...

Posted by Bryan Squirrell Sept. 29, 2019, 3:08 p.m. Wall assemblies - renovation 1 Responses

Improving the efficiency of a home built in 1978 during renovations, do I need an HRV?

I'm looking for ways to tighten up the envelope as I make improvements. One question I have though is does it make sense to install an HRV in an older leaky ho...

Posted by joe cruikshank Feb. 8, 2020, 12:08 p.m. HRV and ERV 1 Responses

What is the best insulation Under 2" Cement flat Roof in NYC?

...efficiency and water leaks? Maybe 2 layers? The base for the roof will be Metal beams. Thanks, Rafael, Brooklyn We would propose you use a rigid board insulat...

Posted by Rafael Mor March 29, 2019, 5:19 a.m. Roof assemblies - new construction 1 Responses

What is the best way to insulate embedded joists in a basement Montreal Home?

...efficiency/energy-efficiency-homes/make-your-home-more-energy-efficient/keeping-heat/keeping-heat-chapter-6-basement-insulation/15639#a6-2 " I want to use a p...

Posted by Emil Idf Jan. 7, 2020, 8:34 p.m. Foundation and basement improvements 1 Responses

Does anyone have any experience or thoughts on a geodesic dome ecohome?

...efficiency in a zone 3 climate. Would the advantages of a geodesic shape such as the fewer materials needed per square foot and even distribution of heating/coo...

Posted by Tyler Chidester Dec. 12, 2019, 4 a.m. Concept and design 0 Responses

What is the best way to make a row house in Montreal Quebec more energy efficient?

...efficiency and cost efficiency and eco-friedliness. What would ecohome do?! What you are describing is pretty much exactly my house in Montreal be...

Posted by Elizabeth Brown Feb. 26, 2019, 9:09 p.m. Wall assemblies - renovation 3 Responses

Is an HRV or ERV system best in a cold climate?

...efficiency and power consumption)? To be clear, we aren't building a "Cabin in the Woods" like back in the day - this will be our 3000 sq.ft. main family home r...

Posted by Michael Duncan Nov. 14, 2019, 3:53 a.m. HRV and ERV 1 Responses

Should I replace my geothermal system with a gas boiler?

...efficiency, problem is that it is American made and will take 6 - 8 weeks to arrive), gas furnace (I have gas to the house since my wife wanted a gas stove, a g...

Posted by Lawrence Brusnyk Oct. 31, 2018, 8:07 p.m. Heat pumps, geothermal and AC 1 Responses

Should I install two small electric hot water heaters - ones or big one?

...efficiency , choosing low-flow fixtures and toilets , water-efficient showerheads and heat pump water heaters . If you are looking to improve your overall home ...

Posted by Shaun B June 28, 2019, 2:14 p.m. Hot water 1 Responses

What is the optimal setup for mechanical systems for slab on grade?

...efficiency! A lot of clients are on a tight budget and the idea of even spending 20% more on insulation was too abstract a notion, for something you don't actua...

Posted by Dave Nuttall July 6, 2019, 9:42 a.m. Mechanical systems 1 Responses

What are the most cost-effective green building strategies in new home construction?

...efficiency. Spoiler alert – heat loss goes in all directions, not just through the roof) read here to see how much insulation you need for green home constructi...

Posted by M T Nov. 4, 2019, 11:07 a.m. Concept and design 2 Responses

Can I use an old patio door thermal pane as the cover for a solar air heater?

...efficiency. You may have seen them already, but below are a few pages on solar air heaters that may be of value to you. good luck, and feel free to send us pics...

Posted by Fred Miller May 20, 2019, 11:44 a.m. Solar thermal collectors 1 Responses

Should I replace my skylights with solar tubes?

...efficiency and durability stand point, it’s hard not to love the open feeling of light streaming in from above. We page that covers that exact topic, have a rea...

Posted by Elizabeth Brown Nov. 30, 2018, 9:32 p.m. Windows and doors 1 Responses

Can you provide Crawlspace Insulation Design Assistance?

...efficiency, and air quality. You mention putting the poly membrane on the floor, any reason you can’t take that up the walls? Doing so would prevent moisture ...

Posted by Randy Christensen Dec. 10, 2019, 12:17 p.m. Crawl spaces 1 Responses

How do you do insulation the outside of a log home?

...efficiency of the house by insulating the outside. What I have in mind is vertical 2x4 strapping, 3 1/2" Roxul insulation, horizontal strapping with 1x3s and th...

Posted by Michael Hickey Aug. 2, 2018, 6:03 p.m. Wall assemblies - renovation 1 Responses

What should I be looking for in a heat recovery ventilator?

...efficiency Warranty Calculating the fresh air requirements of a home as well as proper placement of ducts are not easy calculations to make, so this is be...

Posted by Adam Y. Dec. 11, 2017, 1:07 p.m. HRV and ERV 1 Responses

How does a Passive House handle floods?

...efficiency levels if you like but it would also ensure that it is inspected by an independent third party for its durability measures. Hope that helps, here a...

Posted by Wendy Tsao May 7, 2018, 12:46 p.m. Foundations and Basements 1 Responses

Spray Foam for basements, which of the different types are best environmentally?

...efficiency by reducing heat loss, as it has one of the highest per-inch r values of commercially available insulation products. There are also some significan...

Posted by Rose Adams Jan. 9, 2020, 9:33 a.m. Insulation and soundproofing 1 Responses