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25 Answers

Transoms and Ductless Minisplits

Hello,

I am trying to heat and cool my second floor with one 12,000 btu ductless minisplit. I have heard that this is possible if I keep the bedroom doors open during the day to facilitate circulation of the hot or cool air.

However, does it get uncomfortable quickly in the night when the doors are closed. If so, I was thinking of putting in operable transoms over the doors. The only problem is they are kind of expensive (~$275 from transomsdirect.com). Attached is my floor plan. I will be putting ceiling fans in each bedroom so maybe the transoms would be overkill?

In Green building techniques | Asked By Jimmy Nguyen | Mar 10 16
2 Answers

Finishing a damp basement

I have a client that lives in an early 1900's home here in Minneapolis. Her current foundation is stone not block and is quite rough on both sides. She wants to finish the inside of the basement and add framed walls and drywall. She gets a minor amount of dampness on the wall and it is virtually impossible to waterproof this wall since it is such a rough stone. She does not get standing water but just dampness on the wall a times.

In General questions | Asked By Chris McGuire | Apr 29 16
12 Answers

Insulating cathedral ceiling

I have a late 1970's contemporary home that has non-ventilated cathedral ceilings that do not connect to a ridge vent - they do have sofit vents but don't see how that helps. From the middle of the house there is a 2nd floor where I can get to the point where these roofs join and can see there is little to no insulation. I believe I can remove what is there with extension poles.
My question: What are my insulation options. I assume some type of insulation that can be sprayed (foam or wet ?)

Any suggestions appreciated.

Thanks,
Dan

In Energy efficiency and durability | Asked By Dan Colucci | Apr 21 16
8 Answers

Latex paint on fieldstone foundation

Hi,

In General questions | Asked By Lucas Bender | Apr 29 16
4 Answers

Ducted or ductless?

Hey guys,

Still working on my house specs for my 2800 sqft house just outside of DFW. I really want to have my ducts inside the conditioned space but this seems really difficult unless you foam the underside of the roof. So, I've seen these ductless units and wondering if it's practical and maybe less costly. The big challenge, I think, would be the house is single story, spread-out and lots of rooms. Thoughts? I tried to attach the pdf floor plan but it failed. If you want to see the plan I can email, etc.

Thanks,
Shawn

In Mechanicals | Asked By Shawn Tucker | Apr 28 16
1 Answer

Patio roof on top of insulated roof detail?

Zone 4A, hip roof with 4:12 pitch; spray foam insulation to be on the interior side of the roof deck (not ventilated). I will be adjoining a new roof out over a patio, placing the new ridge and rafters on top of the existing zip sheathing . The patio roof will have exposed rafters, and the wall of the house will extend up to the new ridge, so the part behind this vertical wall that joins with the existing roof will create a dead space.

Question: is the dead space between insulated roof deck and addition an issue?

In GBA Pro help | Asked By David McNeely | Apr 29 16
7 Answers

Why are my windows wet?

4 year-old 2800 SF home in Duluth (zone 7A). Very tight construction, Well insulated etc. Using a Venmar HE1.8 HRV running full blast. We still have 1-2 inches of condensation and some ice along the bottom of our windows when the temp is <0F at night. (low-E H-windows).

Is our HRV sized too small, or am I doing something wrong?

In Mechanicals | Asked By Jeffrey Lyon | Dec 11 13
2 Answers

What is the safest (healthwise) roller blind I can buy?

What materials would it be made of. I can find one made of linen but with an acrylic foam backing.

In Interior design | Asked By Angela Weber | Apr 29 16
2 Answers

In process of utilizing 5/8" fiberglass shell for a small building

Is wrapping in EPS or XPS advisable; should foil surface (vapor barrier) face inward to building or outward to ambient? Is Ceramic Paint a viable alternative since Fiberglass Shell is a homogeneous structure. Electrical and plumbing to be installed on interior side of shell. if so referral to independent (i.e ASTM) applicable studies is appreciated...Thank you, Tim

In Energy efficiency and durability | Asked By Tim Boyle | Apr 27 16
8 Answers

Insulating exterior wall where it meets partition wall

NH here.

I was planning on using rigid foam insulation in a stud bay where a partition wall for a shower begins.

The rest of the bays use un-faced fiberglass batts and a plastic sheeting as a vapor barrier.

The exterior wall is OSB.

I want to go with the rigid foam because I feel it will be easier to piece around the framing I am adding in the bay to support the partition wall - going above and beyond to make sure there is no movement (in aspects I can control) given that the wall will be tiled.

In General questions | Asked By Sam Smith | Apr 9 16
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