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1 Answer

“Accidental dehumidification” in a renovated building raised on two courses of block

Hello to all; this is my first post here. I am in the process of renovating an old agricultural outbuilding in climate zone 6 (Northern Michigan) to be used as a heated artist’s studio/ workshop. The slab is on grade. The building has been raised onto two courses of 6” thick cement filled blocks that are above grade. The interior face of the cement blocks is becoming wet due to thermal bridging. At the corners, where the cold from outside is most concentrated inside, the blocks are the wettest (though they get wet to the touch overall).

Asked By Kevin Lewellen | Jan 11 16
4 Answers

My storage shed plans call for a poured concrete foundation.

However sloping terrain makes that impractical. My solution is to build a deck to support the shed. The shed is 7 ft X 9 ft. X 8 ft walls, gable roof, and stud walls with 1/2" OSB sheathing and finished with Hardie siding.

The deck will be six 4x6 posts, one at each corner, and one at the center of the 9 ft span Each post rests of a 10" dia. by 3 ft dp concrete footing. The deck rim joists are 2 x 8 PT, and notched and bolted to the posts. The floor joists are 2 x 8 PT at 16" o.c. The floor will be 5/4 PT decking, nailed or screwed to the joists.

Asked By Harold Carlson | Jan 10 16
6 Answers

Insulated concrete slab compatibility with linoleum or vinyl plank

This is my first post - hopefully it's in the right category.

Our house is ~20 years old. For the last 15 years, I've has wall-to-wall carpeting glued directly to the concrete floor in my basement. No functional problems.

I'm looking to replace the carpeting with something that is durable, stain-resistant, and long lasting. Current front-runners are Marmoleum (linoleum, so "greener") and a FloorScore-certified low-VOC vinyl plank (Karndean).

According to our plans, the concrete floor assembly is:
- unsealed 4" concrete slab (with a smooth but unsealed surface)

Asked By Mark Wilson | Jan 7 16
80 Answers

Geothermal nightmare

We truly hope you can help us. We had a geo-thermal closed loop system (into the river) put in and it went online March 2012. WaterFurnace Super DeHeater, 4 Multi-Aqua mini-splits (included for AC) and an air-handler (included for AC). 3200 sq ft home with baseboard and in-floor radiant heating. $34,000 and we have had nothing but problems.

Asked By Colleen Nicholson | May 30 13
2 Answers

Mitsubishi 18,000 BTU Heat Pump Boiling/Bubbling Sound?

About one year ago I purchased a Mitsubishi 18,000 btu heat pump. It is the low ambient heating version...FE series i believe not the GE. Last winter was brutally cold (northeast pa) and never had in issue. Just last night it dropped to about 7 degrees F. For the first time I noticed a bubbling/boiling sound coming from the line set and primarily the indoor unit. Like I said earlier, I had subzero temps last winter and never heard this noise. The heat pump continued to deliver warm air and my home never got chilly. I've always heard if ain't broke don't fix/worry about it.

Asked By Matt Noll | Jan 5 16
5 Answers

Water dripping from air conditioning supply vents

Hello I thought I had figured this out pretty easily the first time I noticed it.

There was a small puddle at the corner of my bed that I though might have been one of my lovely male pups leaving a present. As I was going to clean it up, I got hit with a drop from the air conditioning vent in the ceiling.

I chalked this up to my wife taking a shower in the master bath without running the fan. We tend to have higher humidity in our master bedroom because my wife prefers the door shut and rarely uses the bathroom fan during showers. I figured some warm moist air condensed.

Asked By Mike M | Jan 5 16
1 Answer

Roof stack plan for home with log purlins in Climate Zone 6

Hello Martin and Dana:

Asked By Mark | Jan 2 16
2 Answers

Insulating crawlspace floor joists vs. walls

We have a home near Raleigh, NC. The home was built in the 1970s on a vented crawlspace on sandy soil. It has batt insulation between the floor joists. The rim joist and the sill plate are untreated lumber on block walls with 2 courses of brick at top of the block.

The crawl space has had moisture problems which have been largely addressed with plastic moisture barrier and 2 sump pumps with perimeter drain and a dehumidifier. There is indication of previous termite problems in rim joist and sill at front and back door but no apparent problems elsewhere.

Asked By Beth | Dec 29 15
1 Answer

Log Home BC - Martin Holladay - Leslie and Mark

Hi Martin:

Asked By Mark Kozlowski | Dec 23 15
10 Answers

Unfinished third floor insulation

I have a fairly new house (2004) and I am convinced something is wrong with it. Located in NH, it's a basic square colonial with a full shed dormer rear in the attic, and a normal sloped (cape style) flat roof in front (no dormers at all).

Asked By Jeff | Dec 15 15
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