Cold air / Discussions

Can basement walls to dry to the inside with foam board?

...air gap, lately I'm reading leave a tiny air gap. Looking for thoughts on these 2 options. Yes, below grade basement walls can only dry to the inside, but I wou...

Posted by Tim Hanrahan Aug. 20, 2020, 12:34 a.m. Basements improvements 6 Responses

Can you use an HRV or ERV for radon removal in a dirt floor basement?

...airly well when there are no other options, but as it only dilutes the existing air, you will likely find better results with source removal, as in a radon stac...

Posted by Douglas Touart March 1, 2021, 5:15 p.m. Radon in Homes - Mitigation 1 Responses

Can you add external insulation to a brick home?

...colder foundation that a lot of your efforts will be undone in a way. It would be a bit like buying an awesome new winter coat, but then only wearing a pair of ...

Posted by Rachel Kaiser April 2, 2020, 9:11 a.m. Wall assemblies - renovation 1 Responses

What is the best way to insulate a crawlspace to keep humidity down and stop odors?

...air can lead to condensation on those cold surfaces, I’d consider closing it up and running a dehumidifier. What climate zone are you in Dave? That may help us ...

Posted by Dave Bell Oct. 24, 2019, 3:57 p.m. Crawl spaces 3 Responses

How do you fix high humidity levels in a basement?

...air purifying system, adding additional insulation in the attic and refinishing the walls in the basement to reduce humidity and coldness in my home. Frankly, I...

Posted by JR Tadinac Aug. 21, 2019, 11:26 a.m. Healthy indoor air quality 3 Responses

What is the best heating system for new home build?

...cold feet, good call. Cold feet leads to people jacking up the thermostat to compensate, whereas if you had warm feet you can keep the air temperature in your h...

Posted by Maureen Thompson Oct. 28, 2021, 11:33 p.m. Heating and cooling 4 Responses

I want to insulate the outside of my house, which type of insulation do you think is best?

...cold during windy days. On those days the back wall is cold. You can feel the draft coming through outlets. I am looking to upgrade the back side of our house (...

Posted by J. Ferguson Nov. 15, 2017, 10:34 a.m. Wall assemblies - renovation 12 Responses

Halo Exterra rigid exterior insulation - has anyone work with it?

...air barriers, vapor barriers, some with none and some with both. In cold climates you want vapor barriers on the interior, so you need to be careful not to appl...

Posted by George Shannon Jan. 21, 2020, 3:39 p.m. Insulation and soundproofing 9 Responses

In Ottawa, are geothermal heat pumps efficient?

Is the cost of drilling for Geothermal systems not feasible? Great question, and the answer is yes, geothermal systems are efficient in cold climates, but as f...

Posted by John Ioannou July 20, 2020, 12:19 p.m. Heat pumps, geothermal and AC 1 Responses

What is the most comfortable heating system for a home?

...cold walls. We have a page about designing for thermal comfort that may help you solve and fix the problem. Air leakage is another issue that will make a home f...

Posted by Catharine Jans Dec. 11, 2017, 11:25 a.m. Heating with electricity 1 Responses

What causes moisture on a ceiling in winter?

...air meets a cold surface, so if there is condensation on a ceiling then there be either thermal bridging - a lack of insulation . Or, if there is a reasonable a...

Posted by Cheri Banet Jan. 23, 2020, 10:22 p.m. Wall assemblies - renovation 1 Responses

What is the best way to insulate a crawl space?

...cold if there are no pipes in it, but your tenants will likely notice that on the feet. So if you have some sort if work to do down there I think it may be easi...

Posted by Murray Kipp Sept. 17, 2021, 7:35 a.m. Crawl spaces 1 Responses

What type of wood can be installed on a radiant floor?

...cold and you activate it, as it will take a little longer to get up to temperature than it would if it were masonry or concrete. But if you keep your house at a...

Posted by Colleen Blak Dec. 11, 2017, 1:59 p.m. Flooring and stairs 1 Responses

Should I build a basement or slab on grade?

...cold be true. It would also mean that it would not make sense to use infloor heating ane geothermal heating as we had planned. Your toughts? Robert Baker A ...

Posted by robert baker March 27, 2020, 6:54 p.m. New foundations and slab-on-grade 9 Responses

Why is there frost on the underside of my roof overhang?

...air from hitting the dew point. We have never been fans of unventilated roofs, as far as we are concerned they are asking for trouble in cold climates, so getti...

Posted by George Paul March 23, 2020, 12:10 p.m. Roof assemblies - renovation 3 Responses

How do you seal up an old fireplace chimney?

...cold, these chimneys pull hot air out of the house. To stop your chimney from being a major source of heat loss you need to insulate inside the chimney from the...

Posted by Gord Nov. 2, 2017, 10:06 a.m. Wood stove and biomass heat 3 Responses

What is the best way to insulate a 2x8 wall?

...cold climate, since foil is as good a vapor barrier as you will ever find and you don’t want one on the outside of a wall in a cold climate as it will trap mois...

Posted by Michael Sweglar July 8, 2020, 10:43 a.m. Wall assemblies - new construction 3 Responses

How do you attach steps to slab on grade insulation?

...air accessible entry), without compromising the insulation greatly at the attachment point. Let me know if I left out any needed information. Thanks very much...

Posted by Mary Alm Dec. 2, 2021, 11:24 a.m. Slab on Grade 3 Responses