Risk / Discussions

Can you use a vapour retarder paint on the ceiling instead of using a poly vapour barrier?

...risk with the reversed vapour drive as walls. So you may be best to stick with a poly vapour barrier, it can often be tough to get a building inspector to sig...

Posted by Anwas Qwelten June 8, 2019, 3:56 p.m. Air and vapour barriers 2 Responses

How do you re-do the insulation on a old cabin from the outside?

...risks ? Thanks ! Yeah, There is a big risk of mold the way you describe it . A vapor barrier needs to be installed on the warm side of the insulation . Puttin...

Posted by Raphael Couture Sept. 14, 2020, 8 a.m. Wall assemblies - renovation 3 Responses

Can you install foam boards directly against basement walls?

...risk of freezing and cracking. Before you do that it's worth a look to make sure the mortar is in good shape. In a perfect world you would insulate it from the ...

Posted by Ted Gorab Oct. 3, 2019, 6:09 p.m. Basements improvements 16 Responses

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

...risks and find the best way forward - The easiest way to insulate walls from the exterior in older homes But to speak to the products you mention - Rockwool...

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

What is the best option for building our next resilient home?

...risk. A slab on grade house on high ground will safeguard your home against extreme weather events in a changing climate . If you do choose to go with a basem...

Posted by John Bae Aug. 27, 2019, 3:55 p.m. Efficient home design 1 Responses

Wood Burning Stove - Do We Need A Cold Air Vent to Safely Operate?

...risk of producing carbon monoxide). A fresh air supply for a wood stove also increases the ability to evacuate the flue gases; otherwise they will not work prop...

Posted by Regina Vigil Feb. 15, 2021, 3:11 p.m. Wood stove and biomass heat 2 Responses

What is the best heating system to upgrade a 100 year old building?

...risk that will crack the mortar. But if I’m not mistaken, the coldest you would usually see is not too much below freezing so its not a great concern in your ar...

Posted by Rachel Codd Oct. 25, 2021, 3:52 p.m. Heating and cooling 3 Responses

How can I get rid of moisture between the vapor barrier and the insulation in a basement?

...risk getting lots of different opinions and comments - but in our opinion you should probably remove the poly vapor barrier. Any moisture that may have leaked...

Posted by David Mitchell Aug. 14, 2018, 6:32 p.m. Basements improvements 45 Responses

Should I bother testing for radon in a gutted and uninsulated house?

...risk if levels are elevated. For sure you will not get accurate reading a gutted house, but presumably you aren’t leaving it like that. Are you in a high risk a...

Posted by Luba Sharapan March 27, 2021, 12:04 p.m. Radon in Homes - Mitigation 3 Responses

Can you use Comfortboard mineral wool insulation as a skirt on monolithic slab?

...risk was if there was heavy rain in the fall followed by a quick flash freeze, so we eliminated that risk by laying a poly membrane on top of it. The concern wa...

Posted by Eric Sokol Oct. 16, 2021, 11:15 a.m. Slab on Grade 1 Responses

Do I need to spray foam the ceiling of my crawl space to help winterize it?

...risk that comes with insulating old block foundations that never had any insulation in the past. Where are you building (as in what is your climate zone ) and w...

Posted by Sheilagh Thompson Jan. 21, 2021, 1:48 p.m. Crawl spaces 1 Responses

What is a pet proof, safe and durable wood floor sealer?

...risk of scratches to the wood and the sealer, so its more about finding one that is easier to repair when the scratches happen. Most wood floors are finished wi...

Posted by Gail Hagopian Oct. 13, 2020, 11:53 a.m. Flooring and stairs 1 Responses

Could a ductless heat recovery ventilator be used for radon mitigation?

...risk of lung cancer, so there simply is no ‘safe’ amount. Removing radon at the source is always the most effective, that’s why sub-slab depressurization is one...

Posted by Jim B Feb. 20, 2021, 4:40 p.m. Radon in Homes - Mitigation 1 Responses

What is the best to insulate metal structures for all seasons?

...risks), plus radiant heat gain / loss. I hypothesize that, with condensation being so likely due to the highly conductive surface, that any vapour barrier wou...

Posted by Morgan Aldridge Jan. 19, 2019, 1:53 a.m. Wall assemblies - new construction 1 Responses

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

...risk of them breaking down if there is high mineral content in the water. I installed one in my own house (it was not cheap) and it only lasted about 3 years un...

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

Where should I put a vapour retarder?

...risk, so the big question really is about whether or not you will have A/C, and where you live. No air conditioning. North shore of lake Ontario. It seems n...

Posted by Jeffrey Connell March 14, 2020, 4:25 p.m. Wall assemblies - new construction 4 Responses

What is the best way to insulate the exterior walls of an older home?

...risk encroaching on a neighbouring property, you can still make that work, and it seems you have a pretty good plan already. Myself I would probably go with a p...

Posted by Geoff Kavanagh June 30, 2020, 4:01 p.m. Wall assemblies - renovation 2 Responses

What type and how to install an insulated metal flue pipe ,through a tiled roof?

...risk if the wrong materials is choosen or if it isn’t installed properly, but also for insurance purposes. If you speak with a licensed local fireplace / chim...

Posted by david joseph July 25, 2020, 7:10 a.m. Roof assemblies - renovation 1 Responses