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2 Answers

What should I use to create a smooth base under a soft floating flooring?

I am thinking about using a soft flooring like a linoleum or fiberglass flooring. I need to use something under it that is smooth but I am concerned about the VOCs from particle board type products.

Asked By Jacque Hyler | Dec 19 14
10 Answers

Foam insulation and vented attic

I am in the process of buying a house with open cell spray foam on the attic roof. The vents were left open for gas combusting furnaces. We are in Austin, Tx.
My budget to address the problem if there is one should be enough to cover any number of scenarios.

Asked By Heidi Hicks | Dec 16 14
2 Answers

Is Roxul or EPS more environmentally friendly overall?

I certainly like that Roxul has high recycled content, but this PDF published by Roxul makes it look like EPS actually has a lower Lifetime GWP / sq. ft x R. Wouldn't that make it a better choice in the long run?

http://www.roxul.com/files/RX-NA_EN/pdf/Brochures%20and%20Sell%20Sheets/...

The document shows Roxul = 0.0455 and EPS = 0.036.
In addition they are comparing to a 1 pound EPS that only has R3.9 per inch.
If I am using Foam Control 2 pound Type IX the R value is listed at 4.35 per inch (75 degrees F.)
Would that be an even lower Lifetime GWP?

Asked By Marc Sloot | Dec 12 14
9 Answers

Cheap thermal imaging camera

It appears that a startup company called Seek Thermal recently has been offering a $199 thermal imaging camera that attaches to Android or IOS smartphones. What little specifications there are look impressive, for example:

  • Reasonably high resolution, 206x156
  • -40C to 330C range
  • Automatic calibration
  • Nearly 10 frames/sec video
Asked By Aaron Birkland | Dec 10 14
122 Answers

What is the greenest and best material to use for indoor plumbing?

I read that PEX and copper are not the best. Then if PVC is used to bring city water to my home, does that contribute to any chemical leakage? Should I make my plumbing out of natural materials?

What is the best and for how long will it last?

Asked By J FARNOCCHIA | Nov 1 14
11 Answers

Vapor permeability of polyiso

Attached is a picture of foil-faced polyiso which as a bunch of holes in it. The holes were made with a wall paper removal tool which puts holes in the paper to allow liquid stripper to get behind the paper. I welcome comments on this approach to see of foil faced polyiso could be modified to allow vapor permeability thru the sheet if holes were done on both sides.

Asked By Dirk Gently | Mar 18 14
60 Answers

Insulating basement rim joist

Hello, without taking too much of your time, can you please just assist me in a recommendation for insulating my basement rim joists? very small basement, very old home, block walls..

Asked By Dave Mac | Dec 1 14
6 Answers

Raft slab detail

I'm trying to get pricing and supply information for a proprietary insulated footer for a raft slab.

I'm in British Columbia. Does anyone know where I can buy such a product locally?

Asked By erik olofsson | Apr 1 14
26 Answers

Rheem's condensing water heaters (storage)

Hi,

My 14-year-old electric water heater is starting to look a little long in the tooth. Time to upgrade.

So, I'm looking for intel on Rheem's Professional Prestige Series: High Efficiency Condensing Power Direct Vent (RHE50) or its sister sold by Home Depot - Rheem EcoSense High Efficiency Power Direct Vent (ECORHE50).

I can't find any online reviews of either product (save one favorable review on HD's site).

For several reasons, I'm looking at a high efficiency storage water heater instead of tankless.

Asked By Michael Brahmey | Oct 11 14
6 Answers

ThermoCore Roof SIPs - 8" Panels

Anyone here use or have any experience with the ThermoCore SIPs? They are based out of Indiana and have a 8" polyurethane SIP ( I know about the blowing agents) with a R-50 value that I am considering using for my roof. Zone 4B

Some key points:

1 - I will be air sealing all interior panel joints with a T&G connection, caulk, gasket, and finally a peel & stick tape to ensure complete air tightness.

2 - I will use an ERV

3 - On the exterior I plan on putting a peel & stick butyl membrane that is vapor impermeable and then a standing seam metal roof.

Asked By Peter L | May 5 14
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