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1 Answer

Basement – Best way to eliminate musty smell / mildew/ mold etc

I am new to the forum. Thank you for your suggestions.
Purchased a lake house last year. The basement (see attached picture) is musty.
Looking for suggestions / products to redesign the room and clear the air.

My thoughts were to:
Purchase a dehumidifier
Purchase fan(s) to circulate air internally
Install a fan with a timer in the back wall between the 2 room to circulate air

Do I need:
a dehumidifier
a combination of fans to circulate the air
to exhaust bad air to the outside / bring fresh air inside

Here are some facts:
Total SF = 682

Asked By D Moye | Sep 30 16
5 Answers

Minisplit Design for Whole House

Hello, first of all thank you GBA for all of your articles, I have read many and found them to very helpful and interesting.

I am renovating my house (in Tampa, FL) and installing a new AC system, I will be installing minisplits most likely DIY, but will also talk with installers. I want to see what GBA users recommendations are for how I should design my system.

Asked By Jimmy Black | Sep 29 16
10 Answers

Risk of condensation on ducts inside bathroom?

Hi all,

Getting ready to frame the soffit that will hide the ductwork that will run through the bathroom. According to what I read, insulation is not needed on ductwork that is inside the thermal envelope.

Is this true for bathrooms as well? I ask because there is obviously a lot more hot steamy air in a bathroom and I wonder about condensation on the ducts during the cooling season.

Asked By Clay Whitenack | Sep 22 16
1 Answer

Heat pumps and traditional heating

We are about to install a Fujitsu minisplit heat pump for our cooling and heating needs in our 100 year old 2000 sq foot row-home in Montreal Canada, (zone 8 million). We currently have electric hot water radiator heating.

I am curious how I manage to keep the two units from "fighting" each other over who gets to heat the house. I know that when the depths of winter arrive, the heat pump alone will not be able to heat our home.

Is it simply a matter of setting the thermostat for our main heating system a degree lower than the minisplit?

Asked By Sean Lewkiw | Sep 30 16
26 Answers

Choosing a wall assembly: discussion

I really tried to not ask this question since I'm aware that it has been discussed a ton, and I have read a ton on the subject. And even if I've accepted the fact that there's no clear answer, I still have to choose a wall assembly - double wall, 2x6+4"foam, SIP, or some hybrid. Around R40 (I have 12" to work with)

The top priority here is actually budget and ease of construction/quality control.

I've gone through many articles from BSC and GBA amongst many other case studies. This is how my thought process went:

Asked By Bernard Lam | Sep 27 16
11 Answers

Polyiso in bonus room

I'm starting the process of finishing my upstairs I'm located in piedmont of north Carolina. My house is 5 years old I have soffit and Ridge vents 1 dormer simple roof line 2x6 rafters . I found a deal on Craigslist for polyiso the problem is its foIL faced on both sides . My plan was to cut and cobble 3.5" pieces between rafters flush to interior of rafters leaving a 2 inch gap from soffit to Ridge vent then install 3 " polyiso on inside of rafters to adress thermal bridging then 1x3 nailers for sheet rock. Is this a sound plan?

Asked By Eric Teer | Sep 24 16
1 Answer

Can I install 3/8" T-1-11 clear siding over existing 5/8" T-1-11 siding to create a board and batten look?

My house is currently sheathed in 5/8" T-1-11 siding. I'd like to add another layer of 3/8" clear (no grooves) T-1-11 siding over that and then add 2" battens to create a board and batten siding look. Is this a good idea or a recipe for disaster? I live in Maui on the dry side of the island and get a lot of sun on the south and west sides of my house.

Thanks and Aloha,

Asked By Bruce Lowrey | Sep 29 16
2 Answers

Insulation under gravel in slab?

I'm looking at an engineer's drawing (research, not from my own house), and I noted an interesting detail for a frost protected monolithic slab. Working up from the bottom, there's a flat layer of crushed gravel and then a flat layer of EPS. The turn-down footing sits directly on the EPS, and the slab sits on a thick layer of compacted stone over the EPS. The vapor barrier is located in contact with the concrete.

Asked By John Ranson | Sep 29 16
4 Answers

Can a ductless mini-split heat pump be installed for a walk-in cooler?

I have a contractor that installed a Fujitsu AOU12RLS3/ASU12RLS3 in a walk-in cooler for a restaurant. They claimed that it was more efficient than a traditional cooling system. Is this an acceptable installation for this system?

Asked By Kristin McAlpine | Sep 29 16
6 Answers

Does anyone use the wifi controllers on their mini splits?

Hi all,

I am a bit of a gadget geek (in addition to starting to become an energy nerd). I like dabbling in technology and home automation.

At our old house, I had a nest thermostat controlling a typical 2-stage furnace and a/c unit. I really enjoyed the nest functionality... setting up schedules, tracking usage, turning things off/on while on the road. Also, we lived in an inefficient house, and paid a lot for heating and cooling, so I was always looking for ways to raise/lower temperatures when we were out or sleeping, or any other ways to adjust the usage.

Asked By Clay Whitenack | Sep 26 16
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