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1 Answer

Air conditioning fans

Hello Mr. Holladay,

My house is located in central Florida. It is a two story house and has additional vents in the hallway and each bedroom. All but one shoots out cold and the other shoots out hot (right in the circulation path to the thermostat).They are and are facing the walls. I was told to by a friend to cover the one that shoots hot air so it doesn't keep the thermostat running.

Is this safe to cover it up or is the hot vent meant to do this?

Why were they installed, facing the walls, and why is one shooting out hot air?

Thank you for your time with my concern.

Asked By Tim Spaulding | Jun 22 15
2 Answers

Best practices regarding blown-in insulation in a double-stud wall?

Martin mentioned in another Q&A that choosing a contractor with experience installing blown-in insulation in a double-stud wall is important because of multiple ways it can go wrong. I am going to build my first dble-stud wall home soon and would like to know what to look for/ask for regarding a proper install. In our area (climate zone 4C) dble-stud walls are not common. I can imagine that getting the proper density might be challenging without discrete stud cavities to pack. Advice?

Asked By David Landry | Jun 20 15
9 Answers

Drainage and prep requirements for a basement egress door

Hello, all,

I'm poking around trying to do my due diligence and see how feasible it is for me to install a basement egress door in the spot where I've got an existing basement glass block window. Before different contractors come and tell me I do-or-don't need this-or-that, I'd like to get a sense for what's appropriate.

Asked By Minneapolis Disaster | Jun 19 15
10 Answers

Feedback on this sill insulation overlay detail

So I'm considering changing using this detail instead where the insulation covers the sill and comes down to the top of granite veneer, while inside the foundation the interior insulation comes up between the joists. It sounds like a typical basement detail - but it's fairly unique because of the granite veneer and the way I insulated in front of the joists, by using a shelf on the's decision time reaaaaal soon - so thoughts - criticisms - whatever!

Asked By Brad Hardie | Jun 21 15
2 Answers

Why my hall is so hot?

My house is double floor house.. our 2nd floor hall is soo hot but other rooms are quite cool.. the length of the hall is kind of less to rooftop
The sunlight hit the rooftop n makes our hall soo hot than outside temperature.
Is there any way tu cool down the hall without any reconstruction?

Asked By Shahir Ahmed | Jun 22 15
17 Answers

Distance of exhaust fan wall cap from windows and soffit intake vent?

How close can a wall cap for a bathroom exhaust fan be from a soffit intake vent?
I'm trying to efficiently vent a 2nd story bathroom without sending the moist air right back into the attic and I don't have a lot of options as far as placement is concerned.

Asked By Joseph Moore | Jun 1 15
8 Answers

Use PERSIST and put the WRB inboard of the sheathing OR use PUR nailbase panels and put the WRB outboard?

I'm insulating my house on the exterior - the design currently call for 9" of Neopor with the WRB against (Prosoco - spray/roll-on ) the sheathing. The Neopor is outboard of the sheathing. 9" is a lot - but gives me the R-40, without having to use any insulation on the interior. I'm getting a great price on the Neopor.

Just yesterday someone suggested PUR Nailbase panels instead of Neopor. PUR is a (polyurethane) panel, and would reduce the size of the overall wall thickness, is vapor impermeable, and fire resistant -higher embodied energy though .

Asked By brad hardie | Jun 19 15
3 Answers

Attic ventilation

Many people where I live have installed solar roof fans to help with their existing roof ridge this OK, can this cause problems for the roof or shingles ?

Asked By Paul Osmer | Jun 18 15
5 Answers

Insulating a house built over water

Hello All,
I have recently purchased a vacation home on the Intercoastal Waterway in NJ.
The structure was built half over solid ground, and extends out over the water, supported by pilings.

Asked By Jason Witte | Jun 17 15
3 Answers

Preventing air-washing in fiberglass batt insulation

I have had a number of situations where a wall insulated with fiberglass batt insulation is exposed to air spaces (a knee wall, e.g.). Since the movement of air through fiberglass greatly reduces its ability to insulate, would it make sense to apply something like a housewrap over the batt insulation to reduce the airflow (and increase the insulating value)? Or is there another way to resolve this problem? I have thought of plastic or insulating board (polyiso), but would be concerned about moisture issues (condensation).

Asked By Kent James | Jun 17 15
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