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4 Answers

Energy-efficient double entry door

Living in Europe one would not have this problem as we have here in the USA; that is finding a good energy-efficient double door.

I need to find a 3'- 0" x 7'- 10" (double door), total 6' width. I can get a French door but I don't want all glass. I am looking for a nice wood door with an EPS core and excellent double or triple gasket sealing capabilities with European hardware and multiple latching mechanisms for tight air sealing.

Any leads?

In Green products and materials | Asked By Peter L | Feb 5 14
3 Answers

Basement / crawl space fix

I'm doing a renovation on a house that is half crawl space and half basement. The crawl space is part of the original house (circa 1950) and involves a concrete footing with a pressure treated knee wall built on top of it to support the floor joists and above wall (and the rest of the single story house). It is skinned with PT plywood and backfilled to a depth of about 4 feet with the local silty dirt. It was insulated with pink fiberglass batts and had an interior vapor barrier.

In GBA Pro help | Asked By Ashley Lubyk | Feb 4 14
9 Answers

Return ducts in attic; Exposed ducts in conditioned space

I've read a bunch of articles here and on BSC's site concerning ducts in the attic. My 1948 ranch house has supply ducts in the crawlspace, return ducts in the attic. I've replaced the supply ducts and have insulated and encapsulated my crawlspace according to the best methods presented on this site.

I have a couple questions...

A. Return ducts in my attic.

In General questions | Asked By David Martin | Jan 20 14
1 Answer

Can I use Sheetrock all-purpose joint compound to texture directly over concrete basement walls?

I purchased a home that was built in 1958. The basement was finished by some sort of texture over the concrete and then painted. It looks nice, but I noticed some areas that the paint did not adhere well. I started removing some of the paint.

My question is: do I need to remove all the paint and texture or can I just remove the bad areas, and retexture those areas and repaint?

In General questions | Asked By Rod Scott | Feb 4 14
4 Answers

For a house using an HRV, is there a good plan for ventilating both bath and toilet room (separated)?

we are building a single story super tight house with 2.5 bathrooms, each toilet is in its own room, showers each have very high ceilings. we want to ventilate the toilet rooms, and also the shower area. do i have to pick one to be "passive", or can i have both controlled (switched)? If we put the exhaust fan in only the toilet room, then the moisture from the bath will only be removed by the HRV. conversely, if we put the exhaust in the bath, then the toilet room is not "actively" exhausted when it really needs it!

In Mechanicals | Asked By bob tong | Feb 4 14
3 Answers

Older solid brick building insulation

I'm currently remodeling my kitchen which has one 2-wythe outside wall(about 18 feet long, 8 feet high). This is in Boston area. The wall previously haphazrdly covered(maybe 7-10 years ago) with some 1" foil backed fiberglass stuff, but it doesn't look like it caused any damage.
I have thoroughly studied building science corp materials, NPS preservation briefs and other materials on the subject of insulating older masonry walls. Sprayed foam is not an option, so it leaves me with two possibilities:

In General questions | Asked By John Barret | Feb 4 14
5 Answers

Double storm panel on French doors?

I live in SE PennsylvaniaI, recently rather frigid winters.

I purchased a house with 13 South-West East facing exterior double french doors (26 doors in all) representing about 100' of wall space around a U shaped courtyard. Yes, I am aware that it is over the top, but I didn't build it - I just acquired someone else's mistake. Spectacular on temperate sunny days, but expensive to operate otherwise.

The doors are about 25 years old, in good shape for the age, single paned with a detachable storm pane with about 3/4" of air space between glass. Attached is a picture.

In Energy efficiency and durability | Asked By John Metzger | Feb 3 14
2 Answers

Roxul / foam EIFS wall system in zone 6A (Canada) - vapour barrier placement

I am working on a house plan for approx. 1800 s.f. The views appear well suited to mostly passive solar with some windows (dining and 3 bedrooms) facing east.

For the wall assembly I am proposing (outside in)

1x3 furring strips
4" of foil-faced polyiso foam board (est value R6 per inch or R24, taped and sealed.
OSB sheathing
2x6 wall on 24" OC with Roxul R22 cavity insulation

Total installed R value: R46.

based on average winter temperature of -10C or 14F I calculate and inside temp/humidity of 70F / 35% i calculate:

delta T = 56

In Energy efficiency and durability | Asked By Barney Northrup | Feb 4 14
1 Answer

HVAC refit in South Florida beach condominium apartment

West and North facing full glass curtain walls. 30 year old AC duct/return plenum system in place.

Up north we have seen many high volume small duct system installations in old houses. In south florida we are concerned about humidity control/ efficiency of AC system. In addition in this apartment the slab to slab distance is 100 inches so large ducts impact ceiling height.

Surprisingly there are few AC servicing companies that have any direct knowledge of the Spacepak or Unico products (are there other brands?).

In Energy efficiency and durability | Asked By Marc Karlan, M.D. | Feb 4 14
3 Answers

Chimney liner needed when converting from tank to tankless water heater?

I am planning to have a tankless water heater installed (not looking for full payback just want continuous water, more floor space, and less natural gas consumption).

I had a couple mechanical contractors come out today to give bids. One mentioned that if I convert to a tankless water heater that I will need to have the chimney lined for my furnace vent pipe. He stated that since they will be removing the vent in the chimney that is for the current water heater, that the furnace will need a liner now to eliminate condensation.

In Mechanicals | Asked By Aaron Phillips | Feb 3 14
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