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5 Answers

Permeance and latex paint

Martin et al.,

I have a question for a "Pro" on this blog. I am looking into different encapsulants or paints to go over lead paint in an older home remodel. The permeance for these latex based encapsulants varies widely.

Asked By Michael Enos | Sep 19 16
2 Answers

Attic venting

HI-
Indianapolis Zone 5a
My own outside weather station reads mid 70% humidity July through October which is 10% higher than Indianapolis historic values.

single story. baffle vents with roll on ridge vent.

Attic is very very hot and musty. Lots of pressure build-up in summer that presses down into the house bringing allergens with it. Some ice dams in places without baffle vents.

Given the hot/humid summers and colder winters, do i leave the attic ventilation alone?

Asked By Edward Kramer | Sep 13 16
8 Answers

Reducing energy further in Michigan home

We got a 2003 2 story home with a walk out basement. Just got a department of energy home energy score of eight out of 10 and it is predicted to use around 33,000 kwhe a year.

The home is in climate zone 5 and seems to be pretty tight ( 4.5 ach) and insulated beyond the code code at that time.

We just did all LEDs and are getting motion sensors next.

The home has a good southern and eastern pitch to get 5 to 8 kW of solar someday but I know there is more efficiency to get out of it.

Asked By Brett Little | Sep 10 16
3 Answers

Vented flat roof

I'm trying to find the best way to insulate my vented flat roof. I'm in Wisconsin, zone 6b. I've demoed my living room down to the studs. I'm planning to replace the roof in the next 5 or so years, with a non vented roof with insulation on the top of the roof decking. However, in the mean time, I'm trying to come up with a cost effective solution.

Asked By Betina Chaon | Sep 9 16
6 Answers

Unvented, sealed crawlspace under pier foundation

We're in western Montana -- cold, dry, very little humidity and rain, decent amount of snow. Bought a small house (< 700 sq. ft.) on a pier foundation. The crawlspace is raised about 40 inches above grade. The floor joists were insulated with fiberglass batts and covered with thin plywood. Unfortunately the plywood didn't cover things completely, because rodents were living in the insulation between the joists. They had all kinds of tunnels, nests, etc.

Asked By Joe Coulterson | Sep 5 16
5 Answers

Help! Insulation for exposed floor — nightmare reno

I bought an old cottage home on pillar and beam, climate zone 5a I believe (Nova Scotia Canada), used as a year round home.

Unfortunately during renovation work, found the building to have more issues than we thought.

After taking up the existing laminate floor, there was 1/2" plywood sub floor with attached lino sitting over the original 3/4" plank sub flooring over the joists.

The home has at least 1' clearance all around after repairing the old posts and there was previously osb with old polystyrene used for a skirt / crawlspace boarding.

Asked By John S | Sep 8 16
5 Answers

Insulating brick veneer - No sheathing or wrap

We are currently remodeling a 1920s bungalow in Louisville, KY. Upon opening up the exterior walls (original plaster), we discovered that there is no sheathing or warp of any kind behind the brick veneer. The original construction of walls was simply brick veneer (corrugated brick ties to studs), air-gap, studs, and plaster walls (no insulation of any kind).

Asked By Keith Duncan | Sep 6 16
11 Answers

What insulation type and configuration for an old Victorian would work best?

I have a house, climate zone 5 (southwest PA) that is gutted to the studs. True 2x4 balloon construction. I have put on a new roof which I intend to put closed cell foam. But on the exterior walls, I'm trying to determine best course for insulation. So I have the studs, 1x8 sheathing that runs diagonally foundation to roof line. Covering that is old felt paper, then 1" wood dutch lap siding. On top of that 1" foam board, fairly dense, with a dense cardboard and shiny aluminum side facing outward, then vinyl siding nailed into that. The house is heated with a boiler and steam radiators.

Asked By Robert Semenko | Aug 29 16
11 Answers

Exterior walls

Zone 5a, Indianapolis
Single story ranch with slab on grade.
4 inch exterior walls
Current construction:
North facing exterior is stone (no weep holes) then 1/2 space then particle board then 2x4 framing with unfaced fiberglass batt then moisture shield ( guessing 3-4 mill regular clear plastic) then 1/2 in dry wall.
All other exterior walls are vinyl siding then particle board then 2x4 framing with unfaced fiberglass batting then moisture shield ( guessing 3-4 mill plastic) then 1/2 in dry wall.

Asked By Edward Kramer | Aug 28 16
7 Answers

Faced vs unfaced batts in 'flash and batt' approach

This is a follow-up question to one I posted previously: http://www.greenbuildingadvisor.com/community/forum/gba-pro-help/98409/f...

Asked By Rob Moore | Sep 2 16
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