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7 Answers

How to insulate a screened porch floor

I am looking to insulate the floor of a 3-season porch that is outfitted with removable sashes that will be removed for the entire summer season, thus exposing the floor to some blown-in rain. The sashes will be reinstalled in the fall so that the porch can be used in the fall and spring and will be opened up to the main house to benefit from the heating system in the house.

Asked By Elizabeth Slotnick | Nov 28 16
1 Answer

What is wrong with my gas fireplace?

We have a gas fireplace insert. It will not stay on if the solid glass door is on it. If we remove the glass it will work. We've had a partial inspection done on the control and logs. They seem to think it is not getting proper air ventilation. Would this be due to improper install of liner? would they be something clogging up the liner?
Any thoughts would be appreciated. Our chimney is approximately 40 ft. so we are having a hard time finding someone to look at it.

Asked By Linda Wachs | Nov 29 16
4 Answers

Frost on outside of triple pane window

Every so often I notice frost/water (depending on outside temp) developing on the outside pane of my triple pane windows. It's infrequent but will mostly notice it early mornings. Actually, as I sit here this evening (68F indoors, 28F outdoors) the exterior of my windows are frosting up a bit. Interior pane is warm to touch. No moisture problems inside. Air exchange keeps interior moisture around 35-40% in the winter. Moisture (minimal-in bottom corners) only forms on interior windows when it's -10F and below. Thoughts? Thanks.

Asked By Matthew Michaud | Nov 28 16
7 Answers

New earth sheltered PAHS construction

I would like all opinions regarding my new home construction project. I have a full 3 days experience learning Sketchup and have managed to put several ideas on paper. Please review my plans...and pick holes in them :). I don't guarantee to change my mind, but I do promise to research varying opinions thoroughly and supporting data would be appreciated.

Mixed humid climate Missouri 39 deg latititude
CoMo HDD 5173
CDD 396
Sunny days 195
Humidity ave 70% 83% AM, 56% PM
111 days rain for 46"/yr
10 days snow for 14"/yr

Asked By Laurel Davison | Nov 28 16
4 Answers

Interior walls acting like exterior walls

New construction in zone 5. We have 3 interior walls that we have to build up still where the vaulted ceiling meets the flat(see pic). We are planning unvented on the vaulted side (3" closed cell, and fill the rest with cellulose, but just blown in cellulose on the flat ceilings. How would you recommend I build and insulate this wall? I figure I need to treat it like an exterior wall, so drywall, studs filled with fluffy and 3" of rigid foam?(that is what we are doing for our other exterior walls). Thank you in advance.

Asked By Michael Brackett | Nov 29 16
6 Answers

Insulating a cathedral ceiling

What is the most economical way to insulate an 8/12 cathedral with 2x6 rafters, 1x4 "sheathing" with 4" gaps, no barrier...you can see the underside of the metal roofing? The roof is in good shape so I don't want to remove it. I can fir the rafters and vent if necessary but would rather not vent unless necessary. I plan on installing a wood celing without drywall. The house is in Charlottesville Va which is mixed humid. Sorry if you already answered this but I couldnt get back to the other place I asked it.

Thanks, Richard

Asked By Richard Uhler | Nov 28 16
1 Answer

Can unfaced polyiso be used for radiant heat systems?

I have radiant tubing installed between floor joists. I've placed a foil reflective sheet beneath the tubing and though faced fiberglass insulation is recommended to be placed beneath the foil sheet, I want to use un-faced polyiso boards 3" thick instead. The boards will be exposed to a heated, block wall, basement that is reasonably dry.
I would appreciate your comments.
Regards, JTO

Asked By John Oliver | Nov 28 16
6 Answers

Insulating I-joists in a garage ceiling

Hello. I have been doing some research to insulate a 2 car attached garage with a room on top. Size is approximately 27x27, new construction. This is in zone-6, Augusta Maine region, and code is R30 for floors.

Asked By Tony Bouchard | Nov 25 16
6 Answers

I would like to know how install baffles around the rafters of hip roof portion of the roof.

I'm doing quite a few projects in my attic but have run into some snags and figured I'm reading so many articles on GBA, I might as well ask a question here. I'm breaking my questions into parts below and any assistance is appreciated. Before posting here, I did read quite a few forums on GBA about these topics and on other websites. Thanks for any help you can provide!

1) Insulation Baffles

Asked By Josh Z | Nov 27 16
2 Answers

Methods for keeping cellulose insulation from gas flue line

I am preparing for an attic project: air sealing, and blowing in new insulation.

We have a gas furnace, and its exhaust flows in a Type B vent pipe through the attic and out the roof. The Type B requires 1" clearance to combustibles.

There is already metal around the vent pipe where it enters the attic (picture should be attached). There is some gap between the vent and the metal, which I plan to seal using high temperature caulk.

Asked By Sam Smith | Nov 27 16
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