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4 Answers

Installing ductless minisplit over refrigerator

Building an 800sf 2 story house, main floor is 400sf open floor plan. Would there be any problems if I were to install the ductless mini split head above the refrigerator?

I was thinking of mounting it on the front of the soffit so it would be flush or slightly proud of the front of the fridge, allowing it to spread air down without hitting the fridge. It would also be further from the coils on the back of the fridge. I read that it should be 7-10" below the ceiling.

In Mechanicals | Asked By Tom Frisch | Oct 28 14
7 Answers

Sealing meeting point of brick wall and asphalt driveway

Hi,

My house, a semi-detached, has an asphalt mutual drive between it and the neighbors house to the south that comes right up to the side of the house.

I'm concerned about the meeting point between the asphalt and the brick as it looks like water can collect there and seep into the brick (I have some Interior spalling and suspect that this is the source), but I'm not sure how to address this.

Do I use caulk.. or something with the consistency of tar.. or something like mortar for bricks..?

Some photos here:

In General questions | Asked By Jon Haque | Oct 22 14
1 Answer

Rim joist thermal barrier

The rim joist in my unfinished basement is insulated with 3 inches of rigid polyiso along with one part spray foam to air seal around the edges. My understanding is that building code exempts up to 3 1/4 inches of spray foam in this area from the thermal barrier requirement, but that this exclusion does not apply to rigid foam boards.

In Building Code Questions | Asked By Michael Lee | Oct 27 14
2 Answers

I just received a sample of Tyvek Thermawrap external insulation in the mail

It's being promoted as a vapor permeable alternative to foam board external insulation but I'm feeling dubious about how the installation is supposed to work. Anyone have any experience with this material?

In General questions | Asked By James Morgan | Oct 27 14
4 Answers

Insulating a metal barn

I have read a lot about condensation problems when insulating metal barns, as well as your blogs on bubble wrap scams and subsequent commentary.

In Energy efficiency and durability | Asked By brian mccoy | Oct 27 14
7 Answers

Add R-14 Roxul between the garage attic and the house?

I am currently in the process of insulating my attached garage using Roxul R14 "ComfortBatts". I live in Winnipeg and from experience -- when I did this in my last house -- it can improve the temperature by 10-15 degrees Celsius in the winter, without any heating. (And that was with a non-insulated garage door; my new house has insulated garage doors!)

In Energy efficiency and durability | Asked By Mike Lucas | Oct 23 14
2 Answers

Basement slab retrofit questions

I have an older home built in the 1950’s. I’ve insulated the basement walls with rigid foam and a stud wall with batts. This has made the basement more comfortable, but I still have a lot of moisture in the air based on the dehumidifier that I run frequently. I’m fairly certain that the existing slab must be un-insulated and is missing any poly or other moisture barrier under it.

In Green building techniques | Asked By Mark Fredericks | Oct 27 14
4 Answers

Insulating detached garage attic in central Florida

I'm about to start construction of a 30' x 30' concrete block detached garage in central Florida. I'm using attic trusses and plan to use a white raised seam steel roof. I was not planning in insulate the block walls. What is the best way to insulate the roof? I want to keep it a cool as reasonably possible - I might add a window or portable AC, if I have to, but will not run it often. Depending on the final use of the attic, I might even try to condition that space. I'm concerned about moisture buildup inside - wet cars could bring a lot of water in.

In Energy efficiency and durability | Asked By Kelly Lear | Oct 3 14
2 Answers

How to deal with a void (cricket space) above an unvented flat roof?

Hi,
we're in the process of building a new house and originally had a non vented roof assembly detailed for the flat roof portion of the house where we had a single ply membrane over sloped rigid insulation over a vapor barrier over roof sheathing, with batt insulation placed tight against underside of roof sheathing.

In GBA Pro help | Asked By Rachel Kim | Oct 27 14
1 Answer

What's the best wall height for a ductless mini split heat pump?

Hello out there,

In Mechanicals | Asked By Theresa Spear | Oct 26 14
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