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2 Answers

How will this all shake out?

Traditionally if an owner or builder went to construct a house they used the assemblies that were common to the area. There might be several choices, but typically they were those used by, and familiar to, everyone in the trades.

We are currently in a period of transition, where these assemblies, being seen as not responsive to the demands we put on contemporary houses, are being discarded or updated.

Asked By Malcolm Taylor | Dec 17 17
9 Answers

Insulating a 1890s floor from unfinished basement

I am looking to insulate the floor in an 1890s victorian house in Maryland (zone 4) that has an unfinished basement. The floor of the first floor can be quite chilly and its a definite heat loss.

Asked By Joseph Rosen | Dec 16 17
3 Answers

How do I insulate brick wall from the heated side of house?

I am working on a 1978 built, brick house in Juneau, Alaska. Was seeing moisture on drywall and some mold. After removing drywall found 2X2 nailers, 2 feet on center nailed at the grout line. Between the nailers was 1.5 inches of white bead board. Found a few places where the air was leaking in and believe that they have been taken care of.

Other info:
wall is above grade
appears to be single, standard size, red brick constructed wall

I am not sure how to continue...how much insulation can I add for the climate and not damage the brick?

Asked By Daniel Hall | Dec 17 17
40 Answers

1952 Cape Cod


First-time poster. In the past 2 months, I’ve read a hundred or so GBA articles and comment threads; I’ve been amazed by the expertise and generosity of the community. I’ve also read extensively at buildingscience and finehomebuilding -- I’m new to but very interested in building science. Here’s why:


Asked By Emerson W | Dec 11 17
4 Answers

Garage wall insulation


Asked By Mike McLaine | Dec 14 17
1 Answer

Are there any examples of Joe Lstiburek's Ideal Double-Stud Wall in the wild?

This is the wall I'm talking about: https://buildingscience.com/documents/enclosures-that-work/high-r-value-...

It's a double stud wall with the interior studs bearing, and sheathing applied to the exterior of the interior studs to form the air barrier layer in the middle of the insulation.

When I've seen this wall get brought up in the past, worries about constructability issues are often raised for two-story (or higher) buildings.

Asked By Brendan Albano | Dec 16 17
1 Answer

Rim joist insulation with blocking

I am finishing my new construction basement addition and I'm a little unsure of what to do with the rim joists. The rim joists are 2x12 LVL with double rims over two groups of two windows. A cripple wall separates the rim bays from the foundation. Tyvek covers the sheathing with a rainscreen gap. There is TJI (I beam) blocking in between each floor joist, leaving an open space behind each block. I currently have R30 Roxul filling the rim joist bays but I'm wondering if I should pull it out, install rigid foam-sealing the edges with spray foam, then reinstall the Roxul.

Asked By Pat Beurskens | Dec 17 17
1 Answer

Garage doors: Any improvements on low infiltration, high R-value?

I've read a few GBA discussions about the sorry state of garage door R value and infiltration. The conclusion was to look first for infiltration values, and then question the r-value because it probably does not apply to the entire door assembly.

I'm wondering if anyone has any updated information on any products that might be better that others, and hopefully something affordable.

Asked By C L | Dec 17 17
1 Answer

Region 5: above-grade renovation insulation improvements

Region 5, East Stroudsburg, PA 18301. Cape Cod style house (bedrooms on 2nd floor in what was once a large attic).

I'm renovating the kitchen on my first floor. I will be pulling down the drywall on the exterior wall and the ceiling.

Asked By Ryan O'Rourke | Dec 18 17
22 Answers

Region 5 below grade basement insulation techniques with intention to finish

I've probably read most or all of the articles on the subject 5-6 times over, but am still left with many questions as the advice can quickly change as the circumstances do, and it's difficult to keep track of all these factors.

My goal is to finish my below grade basement in 18301 Region 5. Cape cod style home built in 1968. 954 sq ft basement.

Asked By Ryan O'Rourke | Nov 19 17
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