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13 Answers

Crawlspace insulation

Hi everyone - Looking for some clarification around how to best re-insulate a crawlspace that has falling fiberglass batts.

The crawlspace is under an enclosed 3 season porch (no heat or AC), the crawlspace has insulated steam pipe and h/c water pipes running through it. The vents were previously covered with plywood (but not air sealed). The house also had termites, so I need to be able to continue annual termite inspections.

In Energy efficiency and durability | Asked By oldhouse7 | Feb 1 17
2 Answers

Question on insulating barn

Hi everyone,

Heard about this awesome website by listening to Martin talk the FHB podcast, what a great depth of knowledge that man has!. Now I have a question that I hope to get an intelligent non biased answer for! I currently am in the middle of a project of retrofitting a portion of my barn in order to create a roughly 6' x8' bathroom/shower in a room that's about 16' x 24. That all is well and good but like I said it's....a barn, which means there's is absolutely zero insulation or finished wall surface and the outside wall is also the ship lap exterior siding.

In Energy efficiency and durability | Asked By betterman0908 | Feb 20 17
11 Answers

Cracking slab

I had a basement slab poured in May, and it recently cracked in several locations. I am upset that the cracking did not follow control joints. The slab is about 5" thick, and I was aggravated to find that the control joints are only 1/2" deep. From everything I can find, 25% of slab depth is standard. Do I have a leg to stand on in asking the contractor to recut joints to appropriate depth and repair cracks? Slab is 4k psi with rebar on 2' centers poured over poly, 2" XPS, and ~9" crushed stone, in case it is relevant. Thanks for any input.

In GBA Pro help | Asked By Jim Tyler | Feb 20 17
3 Answers

Garage Door Perimeter Seals

I am finishing up a garage build in New Hampshire. The garage space will be heated and the garage doors are the biggest issue as far as air infiltration goes. I have gone with a two inch thick polyurethane door. Each door section has a sealing strip inbetween to seal air infiltration. The issue that I am having is finding a good high quality perimeter seal. Garaga brand double seal was recommended for its good sealing qualitys and the vinyl rubber seal is supposed to be very flexible down to low temps.

In Energy efficiency and durability | Asked By Jonathan Sinclair | Feb 20 17
2 Answers

Filling a sunken floor and laying Tile.

! have a sunken living room floor and intend to raise it to the level of adjoining rooms. The floor has porcelain tile on it, is not cracked and has been in place 10 years. The present depth is 4 3/4" below adjoining rooms. The present plan is to raise the floor with 2x4's, plywood, hardboard or equivalent and use porcelain tile to finish it off. Is it feasible to leave the existing tile and build up over it?

In GBA Pro help | Asked By Sammie Hodges | Feb 20 17
15 Answers

Building a "pretty good house" in Southwest Michigan

My husband and I are in the blueprint & planning process of our post-frame barn home build; we are building in Southwest Michigan (zone 5A). While we are not a financed build and are not going all out Passivhaus or net-zero energy, we are planning on doing what we can afford using green and passive solar concepts for heating, air exchange units and to use Roxul insulation and Prosoco weather barrier. All of which my husband could describe in grander detail...think Martin Holladay's "pretty good house" concepts :-)

In Energy efficiency and durability | Asked By Brant Quinn | Jan 6 17
6 Answers

Heat-pump water heater availability and reliability

I was set to buy a geospring until I found out that they discontinued them. Does anybody have an opinion on the other brands out there?

In Mechanicals | Asked By user-6765908 | Feb 15 17
17 Answers

Electric tankless hot water

My name is John, and I'm an instructor at Madison Area Tech College in Madison Wi, in the Construction and Remodeling Program. We train or students in a 1 year diploma program how to be wood frame carpenters. We build super high efficient tiny homes with the students, that we sell. We incorporate lots of things talked about on this site. One thing we are trying to figure out: How to efficiently heat water without taking up too much space.

In Mechanicals | Asked By John Stephany | Feb 7 17
2 Answers

Sealing under-layers of built-up exterior foam panel insulation

Hello again GBA'ers.

Making progress on the details of my 6" graphite EPS over Zip panel exterior wall assembly, and coming down to the final few questions, I think.

At this point I want to use ThermalStar GX EPS, and the assembly will three layers of 2" to get to the final design depth, the outermost face of the outermost layer will be faced, but none of the others will be, which leaves two (I think) questions:

In Green building techniques | Asked By Gerald Pehl | Feb 19 17
2 Answers

Location of Multi Port Tee for Plumbing

Hello GBA, Zone 2A, I'm replumbing my house, and need help deciding the location of the main multiport tees. There will be 12 lines for the cold, and 8 for the hot. I can put it in the garage right by the water filters and heater, then route all lines up and over, or just put the tee in the attic then route the lines over from it. There is an access panel immediately in front of where it would be in the attic, so access is not an issue. All lines before the multiport tees are copper.

Pros of the in the attic:
Easier routing.
Looks much cleaner in the garage.
Less PEX used.

In General questions | Asked By Jimmy Black | Feb 20 17
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