Should I insulate these walls

K.M.G · 09-23-2009, 12:34 PM

Hi

I'm Re-doing the Bathroom and have been trying to Decide if I should rip all the drywall down and install mold resistance Drywall.

This is a Interior wall and all it has is 4Mil Vapor Barrier

This Wall goes to the Hallway

I have heard only the outside wall needs to be insulated but would anything be wrong with doing the interior walls too.

I'm up here in CDN with those Great -30 Winters

I just don't know if there are any (-) Effects to Insulating Inside walls or Should I just leave it.

If it won't hurt anything to Insulate the walls what R-Value Should I look at or would spray form be better

Thanks

Scuba_Dave · 09-23-2009, 02:53 PM

Insulating interior walls only isolates the heat room by room
My bathroom was unheated, so insulation would make it colder
I did insulate most of the wall cavity between the shower & bedroom to cut down on some of the noise

If you had a room(s) that you did not use in the winter then isolating that room with insulation might help some
My last house I just shut the air registers off in the 2 rooms I did not use

K.M.G · 09-23-2009, 03:24 PM

Quote:

Originally Posted by Scuba_Dave

Insulating interior walls only isolates the heat room by room
My bathroom was unheated, so insulation would make it colder
I did insulate most of the wall cavity between the shower & bedroom to cut down on some of the noise

If you had a room(s) that you did not use in the winter thewn isolating tah room with insulation might help some
My last house I just shut the air registers off in the 2 rooms I did not use

So from what I'm reading it's a Bad Idea then none the less

K.M.G · 09-23-2009, 11:20 PM

Tothetop

**Termite** · 09-23-2009, 11:48 PM

The only disadvantage I can see to insulating an interior wall is that if one room is cold or lacks sufficient HVAC the like Dave said you could create more of a cold or hot room. The insulation could provided very minor sound deadening advantages.

When in doubt I'd say not to do it since there just aren't really any big advantages.

K.M.G · 09-24-2009, 12:27 AM

Quote:

Originally Posted by thekctermite

The only disadvantage I can see to insulating an interior wall is that if one room is cold or lacks sufficient HVAC the like Dave said you could create more of a cold or hot room. The insulation could provided very minor sound deadening advantages.

When in doubt I'd say not to do it since there just aren't really any big advantages.

Would I even need to install a Vapour barrier then

joeys509 · 09-26-2009, 04:45 PM

Hello, I just winterized my home (getting it ready for the upcomming winter season) I would not insulate a bathrioom that does not have outside walls unless you are trying to soundproof the room. I read this blog about going green at home and it took me to a site called LINK REMOVED there was a great article about winterizing and going green, it gave me a few ideas I wouldn't thought of on my own. Just wanted to share. Good luck with that bathroom! Stay warm

K.M.G · 09-26-2009, 05:01 PM

I have a update!!!

I took all the drywall off and what Do I find, they put insulation half way in that one wall.

The Pieces they used half some type of "Black Mil-do or Mold"

My guess is Moisture as we don't have a exhaust fan yet and with Showers etc for the last 20 years I see that as the cause.

(the house is 20 years old and we have lived here 10 and the bathroom is the same)

Everything is

My question Now,Do I replace the old stuff half way like they did or just remove it.

I really don't want to hear people going to the washroom when I'm watching TV