Joists / Discussions

Which insulation do I use for interior walls of a framed in bunker?

...joists for temp and moisture insulation. I have to say you've got us a little stumped here with the word 'bunker', and the ensuing description. So clear me up a...

Posted by Dale Klubertanz March 23, 2021, 10:38 a.m. Insulation and soundproofing 1 Responses

Should I insulate a crawl space from the outside?

...joists are cast into foundation walls which means trapped water could lead to rotting joists. My preferred option is to digout the foundation from the outside...

Posted by Ryan Argente March 7, 2021, 5:07 p.m. Crawl spaces 0 Responses

Can you use blown cellulose overtop of fiberglass insulation?

...joists, Im wondering if I can increase the insulation or if that is of no use since the stairwell is open. Blowing cellulose overtop of fiberglass insulation is...

Posted by E McKinney Feb. 3, 2021, 1 p.m. Architecture and plan design 2 Responses

What type of framing is best to reduce CO2 emissions in a single family home?

...joists (LVL or LSL)? Assuming the engineered lumber has greater strength and depth spans, does this offset the higher embodied energy to produce the engineering...

Posted by Rachel Rodd Sept. 28, 2020, 3:04 p.m. Wood and organic materials 1 Responses

Where is the correct vapor barrier location in Chicago?

...joists on top of the wall extend out 30 inches from the foundation wall. There is an overhang, common in a lot of raised ranches. I want to insulate this "overh...

Posted by Joel Peerson Jan. 31, 2021, 7:31 p.m. Air and vapour barriers 2 Responses

Can my shallow crawl space be converted to a slab foundation?

...joists were replaced due to rot, concrete footings poured and the floor of the crawl space covered in crushed stone. I have high humidity in the house and crawl...

Posted by Sian O'Keefe Aug. 15, 2020, 12:52 p.m. Slab on Grade 1 Responses

Can I put a breathable peel and stick weather (air) barrier on the inside walls and ceiling?

...joists with caulk or sealant because where the SPF meets the joints, the seam is thin and air goes right though the SPF and enters the joints. I'm considering...

Posted by Anomika Singhn Oct. 1, 2018, 9:56 p.m. Air and vapour barriers 1 Responses

What is the best way to insulate the ceiling of my crawl space?

...joists above the foundation have spray-foam insulation. Since we moved in, I know that the addition's floor is very cold in the winter and in the summer we don'...

Posted by Judy Mendel Feb. 17, 2020, 11:10 p.m. Crawl spaces 4 Responses

How should I install XPS insulation in a basement?

...joists above, not following the transition to the narrower block. This will create a void between the rim joist and the XPS sheet behind the framed wall. One ...

Posted by Ken Hunold Dec. 27, 2020, 7:22 p.m. Basements improvements 0 Responses

How do you improve an old block foundation with no insulation or exterior moisture barrier?

...joists. (don't know how to remove concrete nails). I removed the batts from the rim joists as well -- all was wet. All the houses in this lake-side town sit o...

Posted by Wilhelmina Lange March 11, 2021, 4:19 p.m. 2 Responses

Can you insulate a concrete block basement walls with only rockwool?

...joists are. We would have a dehumidifier. Anything in here that jumps out as potential for renewed mold growth? Thanks in advance! One thing that concerns me is...

Posted by Aarne Valikangas Jan. 1, 2021, 9:22 p.m. Basements improvements 1 Responses

Should I insulate my basement ceiling?

...joists and that seems to be a good idea that won’t contribute to moisture problems. It’s not a wet basement, but the block does get a bit of the white stuff gat...

Posted by Nina Hartt March 21, 2019, 8:23 a.m. Basements improvements 1 Responses

How do you insulate a cottage crawlspace? It's in the Haliburton Highlands

...joists. The cottage crawlspace is divided in half by a styrofoam boundary. One half has all the plumbing, 2 radiators, spray foam around perimeter and a dehumid...

Posted by Beata Domanska May 25, 2020, 11:38 a.m. Crawl spaces 1 Responses

How do you fix radon and water infiltration in a dry stone foundation?

...joists and filling w rock insulation btwn. Heard they hate that stuff. Many thanks in advance for any advice and/or validation. Any foundation built at the bott...

Posted by john flannery July 14, 2020, 4:24 p.m. Foundation and basement improvements 5 Responses

Basement reno - How do I effectively insulate my basement?

...joists? Details: 2-story house built 1983, located in southern Ontario (GTA). Poured concrete foundation. Floor joists sit atop the foundation wall on a rim j...

Posted by Steve J Feb. 13, 2019, 10:25 p.m. Foundation and basement improvements 2 Responses

Should you allow air flow through a crawl space with a dirt floor?

...joists if left as is. So that was a good move to put down a poly vapour barrier on the ground, but the rest is a little suspect to me as it is to you. First tho...

Posted by Amber Murray Aug. 17, 2020, 10 p.m. Crawl spaces 3 Responses

Can you create a passive wine cellar by insulating and air sealing a crawl space?

...joists are 2x6. Would filling the stud bays with batts and foregoing the foam be a high enough R-value between the cellar and the house? I'd rather not lose mor...

Posted by JC Wong April 2, 2021, 6:50 p.m. Crawl spaces 5 Responses

How do you fix high humidity levels in a basement?

...joists is 84 inches. There is no sump pump, and I’m not sure if there was flooding before I moved into the house. However, the home inspector indicated the pres...

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