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-   -   Insulating soffit overhang? (http://www.diychatroom.com/f19/insulating-soffit-overhang-167177/)

Mperez1202 12-23-2012 08:03 AM

Insulating soffit overhang?
 
i live in a 1958 built split level ranch in Nassau County, New York. On the west side 1st floor of the house I have a gargae, laundry room and a bathroom sitting on a concrete slab. On top of the 1st floor directly over the garage are two bedrooms and 1 bath. In the rear of the house there is what I believe is called a cantilever overhang. The rear bedroom and bath extends and overhangs past the 1st floor of the house approximately 2 feet. In the front of the house there is a soffit overhang that is covered with shingle roof. This overhang extends from the front of the garage about 3 feet and then goes up 1/4 of the height of the wall of the second floor front bedroom. The problem that I'm having is that the floor in both bedrooms and bathroom are freezing cold in the winter time. What would be my options for insulating those two spaces.

oh'mike 12-23-2012 08:34 AM

This would be a good time for a photo----I'm having a hard time picturing this one---Mike----

Mperez1202 12-23-2012 09:38 AM

http://www.diychatroom.com/members/m...2-imag1134.jpg

http://www.diychatroom.com/members/m...1-imag1133.jpg

http://www.diychatroom.com/members/m...3-imag1132.jpg

http://www.diychatroom.com/members/m...rom-garage.jpg

http://www.diychatroom.com/members/m...back-house.jpg

http://www.diychatroom.com/members/m...-1st-floor.jpg

Mperez1202 12-23-2012 09:48 AM

I recently ripped out the portion of sheetrock just to see how I could better insulate the front area. The garage ceiling had some old insulation with sheetrock. The floors were freezing. It appearred that the cold air was was coming in from the soffit and running above the insulation in the garage and also running up the front facing bedroom wall. The hardwood floor and front facing wall are freezing. Also in the rear of the house the floor of my rear bedroom and bathroom are also freeezing cold.

I was thinking of spray foam?

oh'mike 12-23-2012 09:52 AM

We have some real experienced insulation workers here---let's see what the pros recommend--I've had to deal with that poor design in the past----not easy---

hand drive 12-23-2012 09:55 AM

spray foam will give the best r value for the confined space. there is also an attic crawlspace above where you tore down the drywall, you can see the T&G flooring and there should be an access to get in there. you will need to insulate the walls where that attic meets the bedroom walls also. so insulate the overhang from below and then insulate from inside the attic space...

Mperez1202 12-23-2012 10:04 AM

Actually the part of the sheetrock thats torn down is the front bedroom floor. That tongue and groove is the subfloor and htere is hardwood floors on top.

joecaption 12-23-2012 10:18 AM

Why would someone use vented soffit material when there's to way to vent it?
It's just letting in cold air.

hand drive 12-23-2012 10:18 AM

ok, kind of hard to get (one picture) from all of the pics. the part I'm seeing that overhangs the house, the third pic looks like it has an attic, does it? is there a wall soffit vent at the top of that roof where it meets the house?

^ Exactly Joe, what I was wondering too

Mperez1202 12-23-2012 12:03 PM

Looks like a poor design but that's what I was also thinking. There is 1/4 inch plywood under ther vented soffit material with no vent holes that's I know of in the plywood. There is still a lot of cold air that is coming in from i gues the seams of the plywood. What I was wondering is could I totally seal off the entire area of the soffit so no cold air is seeping in and then have spray foam on the wall extending down from the bedroom and then to block off the space in joists that goes from the garage to the soffit. Sounds a little confusing but I just want to be sure that I should not be concerned with venting that area.

pro handyman 12-23-2012 12:19 PM

Your best bet is to have it spray foamed. That will completely seal it off. Only other thing I could think to do that would help is. Remove soffit and plywood put plastic up sealing all seams and edges with tape. Then try and fill it with blown in insulation.

pro handyman 12-23-2012 12:24 PM

Also its code to have plastic that sealed with tape at seams and around edges in attached garages. Cause of carbon monoxide from could get into living space and kill you.

gordieax 12-23-2012 04:05 PM

Is the entire floor over the garage insulated? If not, it needs to have as much insulation as possible.

Mperez1202 12-23-2012 07:16 PM

Yes , the floor is insulated but it is old and looks like its not doing much. I plan on tearing down the entire garage ceiling and insulation and having it all spray foamed. My main concern was the cold air that seems to be coming in from the soffitt its running up the exterior bedroom wall and through the wood floor. So I would need to toatally seal off or insulate that soffit area to prevent that cold air from coming in.

Develin 12-24-2012 05:33 AM

If it's really just the floors that get cold and there isn't any damp creeping in... I'd be more inclined to put down some rugs... Saves effort and money. If the problem is damp I'd probably just rip everything and start all over again. The suggestions above about putting in new plastic soffits is pretty stellar advice... but that's just my opinion, there are plenty of viable options.

As long as there's no damp and ambient temperature is all right I don't think it's that big of a problem. :)


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