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1 Answer

Domestic hot water power demand is no longer an issue?

Traditionally, heating and cooling requirements have been the largest energy draw in homes. The ability to relegate heating and cooling to 2nd or even 3rd place in a home energy draw hierarchy is now possible with better building techniques, such as PH. It has been generally agreed that the new king of the draw is DHW. However, I wonder if that is still the case now that HPHW systems have hit the market. I live in a heating dominated climate. The maximum heating demand allowed per PHI is 4.75 KBtu/SF or 5.2 KBtu/SF per PHIUS+ for my climate zone.

Asked By Jonathan Lawrence CZ 4A New Jersey | Oct 22 16
61 Answers

While I love radiators, I hate using fossil fuels

I live in an 1890 Victorian in Southern Pennsylvania, heated by oil. While I love radiators, I hate using fossil fuels! Is there a way to use green technology to use less oil? My methods to date have been uncomfortable - installing a wood stove.

Is there a way of boosting the boiler with green energy? Would geothermal help? I'm newly divorced and ignorant about systems!
Thanks, Susan

Asked By Susan Hanway | Aug 28 16
6 Answers

Garage and root cellar insulation

I received a call from my mechanical engineer today asking me how I planned to insulate the garage and root cellar ceilings. Both rooms are in the basement and above those ceilings are first floor living spaces. I told him my plan is to dense pack them with cellulose and probably add an inch of Polyiso covered with a layer of gypsum to break the thermal bridge and satisfy fire code. I was planning on insulating the rim joists with a couple of inches of ccSF on the inside, the only area in the house with the nasty stuff, mineral wool on the outside, and then dense pack would fill the bays.

Asked By Jonathan Lawrence CZ 4A New Jersey | Oct 19 16
7 Answers

Double backdraft damper needed for bathroom fan?

I am going to install Panasonic exhaust fans in our bathrooms in new construction through an unvented attic.. The Panasonic fan comes with a built-in damper and their installation guides mention using a wall cap with a damper too. This means there are two dampers.

The Panasonic damper is very light plastic does not seal well and opens easily. The wall cap damper is typically metal, making it a little harder to open. Our HVAC contractor suggests not using a damper at the wall cap but this worries me.

Is the best approach to use two dampers in line?

Thanks for your advice.

Asked By Jeremy Turner | Oct 19 16
14 Answers

can you create a blog on infrared heating panels?

People would benefit from knowing how infrared heating panels are more efficient, comfortable, and safer than conventional heating methods.

Asked By Iona Jonasson | Oct 19 16
5 Answers

Insulating over cedar siding with 1-inch rigid foam underneath

Hi All, Just purchased a home in northern Michigan. Built in 1988 with 1" of TUFF R(?) foam under vertically applied cedar 3" T&G. After inspection there are 2x4 stud walls, 3 1/2" fiberglass insulation,plywood sheathing, 1" TUFF R foam, 5/4 cedar siding, and no drainage opening. I was trying to add insulation to the exterior. Thinking about ROXUL board directly over the cedar, furring strips, and different siding. Any thoughts on this plan.

Asked By Bill Skaff | Oct 17 16
9 Answers

What's the best way to renovate/rebuild an old south-facing exterior wall?

Hi All - I am a newbie to this group but have considerable building experience remodeling and renovating homes, and completing unfinished properties. Still, I am no expert building contractor.

Asked By Roger Smith | Oct 2 16
11 Answers

Insulating an addition built on piers and insulating corners

I am starting a 16' x 21' addition that will be supported on 8' tall block/brick piers. The floor will be framed with 11 7/8" I Joists. I contacted an insulation sub for the insulation work. Here are the details:
23/32" plywood sub floor
11 7/8" I joists
Sub will apply R30 of Icyene open cell foam to bottom of sub floor (leaving approx 3-4" air gap to bottom of joists
I will install 2" XPS foam, then 15/32" ply, Tyvek taped for air sealing, and vinyl soffit,

Asked By Dave Otto | Oct 13 16
2 Answers

Insulated Slab - Entrance and Edge Details

I am working on my first Insulated and heated slab for a garage addition. We are focused on getting the details right. To start we are in Northern NJ (Climate zone 5/4 Marine) We installed 2" XPS down the inside of the stem walls to the footer. Under the slab we have 2" XPS sitting under the Vapor Barrier and wire mesh and above the crushed stone capillary break. We are running into an quandary with the edge details:

The mason is insisting that we need to

Asked By David Colin | Oct 17 16
8 Answers

Old, empty house — preventing mold

I have a small, old house in Transilvania (Romania) that is empty. The windows do not close well,

Asked By Sue Park | Oct 15 16
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