Renovation / Discussions

Can I add Larsen Trusses and cellulose to 1920s House in Minneapolis?

I have 1920's house in Minneapolis, I'm thinking about tearing the siding off and adding 12" deep Larsen trusses with dense packed cellulose. The guides I've see in Fine HomeBuiding magazine suuggest the best route is apply poly barrier on the outside as the R 40 gain from the trusses would stop any moisure from conden...

Posted by Ken Traefald Feb. 17, 2020 Wall assemblies - renovation 3 responses

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

...renovations –  The easiest way to insulate walls from the exterior in older homes Here are our top 10 energy-saving home improvement tips with the greatest return. If you are insulating a home from the exterior and installing an air barrier, you may get to the point where you need a heat recovery ventilation (HRV) or...

Posted by joe cruikshank Feb. 8, 2020 HRV and ERV 1 response

Where can I buy hemp insulation for home renovation In Durham Region, Ontario?

Where can I buy hemp insulation in Durham Region area of Ontario, Canada?   You can find out more about hemp insulation at Ecohome for Canada or the US, And by going to the Hemp products directory on Ecohome, and hitting that Contact this company button and letting the supplier know the quantity you need (square foot t...

Posted by Virgil N Jan. 23, 2020 Insulation and soundproofing 4 responses

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

 I've recently purschased a house in Montreal Canada. We get -20C in Winter and we can get +30C in Summer.  I have a split level home built in 1961 that is pretty drafty. I would like to start with a basement remodel. The walls are currently made up of mineral wool insulation with studs on 16oc all the way until Joist ...

Posted by Emil Idf Jan. 7, 2020 Foundation and basement improvements 1 response

Can you use Foam boards on basement walls to stop condensation?

...renovations The biggest problem, as you would read about in that page, is the fact that standard basement construction techniques usually involve an interior vapor barrier, which will cause more harm than good. And a part of that problem is that Building inspectors often insist on a vapor barrier, despite the harm it c...

Posted by Chad Johnson Dec. 21, 2019 Basements improvements 3 responses

How do you install rigid insulation to the outside of a brick house"

There is no space between bricks so we would like to add R20 to the exterior of the house also providing a vapour barrier. A previous owner had taking down the lath and plaster and installed two by twos with a bit of fiberglass insulation but no effective vapour barrier. Any suggestions would be appreciated. Insulating...

Posted by Gordon CASWELL Dec. 13, 2019 Wall assemblies - renovation 1 response

Is Condensation on Windows a bad sign?

Since the recent cold snap our double glazed windows are running with water, every morning it's all over the window sills, running down the wall - in the bathroom it's even making a puddle on the floor tiles. Now I noticed the seals at the bottom of our windows are starting to get what looks like a black mold - should ...

Posted by Greg Olmstead Dec. 12, 2019 Walls and Roofs 1 response

Should I install basement drain tile vents?

I'm installing basement drain system and the contractor wants to install vents through the concrete floor at the wall junction to drain moisture condensate from basement walls through the floor to the drain tiles. He claims this prevents mold from forming behind finished walls.  Does this work or is it only a path for ...

Posted by gary taube Dec. 11, 2019 Foundation and basement improvements 3 responses

Is it OK to put 1 inch of EPS under vinyl siding with no wall insulation?

We have a cabin in the Bershires of Massachusetts ceilings and floor have been insulated, dense pack celluose in ceilings 4 in Amivic graphite EPS under floors. Walls have no insulation, siding is T-1-11 from the sixties would like to put 1 inch EPS under vinyl siding. the building is pretty well built. no sagging part...

Posted by Roger Smith Nov. 12, 2019 Wall assemblies - renovation 7 responses

Is There a Difference Between an Air Barrier and vapor barrier?

Hi, I have an open beam house (no attic access) built in 1962. I live in cold, dry Edmonton Alberta. My low slope roof doesn't leak, however about once a year in the spring when we have a big temperature increase, I get water dripping from my interior open beam. Only lasts a few hours, I understand that my vapour barri...

Posted by Sherri Mccormick Aug. 17, 2018 Roof assemblies - renovation 3 responses

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

...renovations should be carried out. Having to remove all the poly is probably not the news you were hoping for but you are at least fortunate in the sense that there is no drywall on at this point. Most people only find out their basements are rotting many years after they've been finished.  We can help you with whateve...

Posted by David Mitchell Aug. 14, 2018 Basements improvements 62 responses

What is the best way to renovate a basement after a flood?

...renovation and have been doing some reading on your website only recently. I'm realizing that I may have made some mistakes and would like your advice as to what direction to take in order to minimize future problems. The basement was partially finished when it flooded after a 100mm Ottawa area rain event in October 20...

Posted by Wren Toombs June 18, 2018 Foundation and basement improvements 2 responses

How do I create a complete air barrier using a vapour retarding primer?

After reading about vapor retarding primers on ecohome I am sold on using this technique to air-seal my 50's house after doing renovation work. The missing part is how do I deal with recessed lighting and electrical boxes that penetrate the walls and ceiling. Any tips on this?  The short answer is that you can’t, the v...

Posted by Mihai Wilson May 3, 2018 Wall assemblies - renovation 1 response

What is the best way to insulate a home from the outside?

We live in an old 2x4 wall home that I’m told by the previous owners originally had no insulation, then it had loose fill cellulose insulation added decades ago between the studs, but as per usual the cellulose has settled and there are big gaps at the top. As part of an extensive home renovation we have decided to str...

Posted by Sylvie Gagnon Dec. 12, 2017 Wall assemblies - renovation 1 response

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

I live in Southern Alberta and will be replacing my exterior vinyl siding with wood, I also want to add insulation at the same time. It's a 2x4 wall with pink insulation and a vapour barrier behind the drywall,  and only vinyl on the outside. There are a lot of different kinds of rigid foam panel and I don't want to ch...

Posted by J. Ferguson Nov. 15, 2017 Wall assemblies - renovation 13 responses