Joists / Discussions

What is the best deck material?

...joists you can often leave them in place when a deck is in need of repair and only replace the top decking boards.

Posted by Babak K July 17, 2020, 2:10 a.m. Decks, porches and gazebos 1 Responses

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

...joists, though I'd consult an engineer to make sure that the foundation is solid as well as the framed load-bearing walls before you make any modifications. As ...

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

In the winter should you heat a low/dirt floor crawl space with a furnace vent?

...joists only, or is there equipment in the floor (water heater etc.) that needs to be kept warm? Is there currently non membrane at all on the ground, its just...

Posted by janis hobson Dec. 11, 2019, 3:17 p.m. Crawl spaces 1 Responses

How do you install radiant floor heating in an old building?

...joists which heats the cavity and an insulated radiant barrier on the bottom of the joist before covering the ceiling, this cut our heating bill by about 40%. H...

Posted by Rob Doda March 19, 2020, 3:21 p.m. Delivery: radiant, forced-air and decentralized 2 Responses

How do can I insulate an existing basement floor from 1906?

...joists. There is a sump hole and pump. No obvious past flood stains. Your winters aren't too harsh in general, and that 6 feet of head room is right on the cusp...

Posted by Cathy Gaskins Feb. 18, 2021, 11:24 a.m. Basements improvements 3 Responses

Can you Insulate a cinder block basement foundation with Rockwool?

...joists with Rockwool to avoid moist warm interior air condense on the rim joist behind Rockwool (between rim joist and Rockwool ) . I am planing on placing dryw...

Posted by Victor B June 19, 2019, 11:41 p.m. Basements improvements 5 Responses

How do you insulate a cottage crawlspace and install radiant floor heat?

...joists and that is a bit too close to the wet ground for my taste. Take a look here at our pages about crawlspaces to get an idea of the basics on how they func...

Posted by Todd hall June 28, 2020, 8:36 a.m. Crawl spaces 1 Responses

How do you insulate a crawlspace with dirt floor?

...joists over your head and just heat that space instead. See here our page on How to insulate a crawlspace floor , and please feel free to ask more questions if ...

Posted by sal Bellicoso Oct. 30, 2019, 4:56 p.m. Crawl spaces 2 Responses

Can hydronic radiant heating be a complete heating solution for a home?

...joists. I plan to install the piping above the subfloor and not below. Also, a HRV will be installed as well. I live in Bellingham, 98229 WA and being in a "f...

Posted by Jeremy Peters Dec. 16, 2019, 1:13 a.m. Delivery: radiant, forced-air and decentralized 3 Responses

What is the best way to Insulate the crawl space of an old home?

...joists as you mention and keep it cool. This page here will likely have the answers you are looking for - How to insulate a dirt floor crawl space Having a ...

Posted by Aj Jan. 21, 2020, 8:13 a.m. Crawl spaces 1 Responses

What do you think of insulated T Studs in Canada?

...joists that we had insulated with Rockwool rigid insulation boards (photo below). They were surprisingly easy to build, we just ripped the insulation panels on ...

Posted by Lee Watt June 3, 2019, 10:57 a.m. Wall assemblies - new construction 1 Responses

What do I in my basement where new insulation meets old?

...joists? That is a common place for air leakage and thermal bridging, so if you can at least insulate there then you would be ahead of the game. That can be done...

Posted by Steve J July 20, 2019, 10:01 p.m. Basements improvements 2 Responses

What is the best way to insulate the basement of an old house?

...joists? Spray foam is an option for there (it’s not necessarily the cheapest option but it works well) and it would allow you to create a continuous barrier if ...

Posted by Bryan Squirrell Jan. 14, 2020, 7:59 p.m. Basements improvements 1 Responses

Can you replace an old slab foundation with an air heated slab?

...joists and build a new foundation, but with a slab you’ve almost certainly got interior division walls as well as kitchens and bathrooms resting right on the co...

Posted by Mike Molloy Nov. 7, 2019, 8:44 p.m. Slab on Grade 1 Responses

What is the best way to install 5" of XPS rigid foam on interior basement walls?

...joists above, and attach them to the floor with Tapcons (concrete screws). Be sure to tape any joints in the foam as well to prevent moisture infiltration. Al...

Posted by Sean MacDonald June 14, 2021, 10:42 a.m. Foundation and basement improvements 5 Responses

What is the best way to insulate a Multi-material wall?

...joists and headers. My plan for the interior space of my basement is 2" EPS against Concrete walls and Fill/seal each cripple wall void and header with EPS to...

Posted by Steve J Sept. 29, 2020, 10:15 a.m. Wall assemblies - renovation 7 Responses

What is the best underfloor insulation type for radiant floor heat?

...joists (or timbers I guess in your case) would work well, here we have access to spray foam with less harmful blowing agents that are also less toxic for occupa...

Posted by David Irwin July 12, 2020, 6:48 a.m. Heating and cooling 1 Responses

Is there any risk to a concrete foundation from adding interior insulation?

...joists above and keeping the foundation at a lower temperature to reduce heat loss. An other solution may be to add exterior insulation if possible, that’s alwa...

Posted by Drew Tozer Jan. 5, 2021, 12:57 p.m. Basements improvements 9 Responses