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-   -   Insulating babies room (http://www.diychatroom.com/f103/insulating-babies-room-181835/)

VinnyBags 06-14-2013 12:34 PM

Insulating babies room
 
I am renovating our new babies room. I now have only exposed studs and rafters. I will be sheetrocking soon but first i need to install insulation. I can insulate the walls easily but i have a question for the attic.

As I said there is no ceiling right now, Can I insulate the attic space over the room before i sheetrock the ceiling or is it best to sheetrock first then go into the attic and install the insulation? I would like to handle the insulation as little as possible and have it installed at easily as possible.

joecaption 06-14-2013 03:20 PM

Sheetrock first, then consider blown in instead of fierglass.
buy 10 bags and you get a free rental of the blower.
Make sure to install baffles before the insulation.

ddawg16 06-14-2013 03:44 PM

No reason you can't do it both ways. Assuming you have ceiling joists on 16" centers...install craft faced bats paper side down...stable to the inside of the joist...then install your drywall.

Do the ceiling first...use 5/8" for the ceiling...1/2" is ok for the walls.

Then later you can do as Joe says and do another layer on top of the existing.

BTW...it helps to put your location in your profile.

VinnyBags 06-14-2013 03:50 PM

Ok so install insulation paper side down so basically upside down? What are baffels used for and do I need them in the walls as well?

Windows on Wash 06-14-2013 06:23 PM

Vinny,

A picture of the outside will help out quite a bit. You need to make sure the attic is vented properly and be sure to air seal the top plates in addition to insulating.

It is most often done from the top if it is an open attic.

If it is vaulted, you need to post up some more details.

jagans 06-14-2013 11:42 PM

It is done from the top if it is blown in. There is no reason you cannot insulate first. Use a faced batt insulation and install it with the vapor retarder ( what you call the paper) side down toward the living space. fold the tabs out and face staple them to the studs for best results. Its not just paper. Install the drywall over the tabs and screw it in place.

VinnyBags 06-15-2013 11:25 AM

Great thanks. 2 more questiions..

1. Do i need to leave space at the points where the ceiling meet the walls for ventilation? There is a gap all arouund the attic where you see daylight under the soffit so i assume that is for airflow.

2. Do I only need to insulate the outside walls or should I also insulate the interoir between the bedrooms?

3. Do I install insulation in the open bay where my air return is for the forced central heat and air.

Windows on Wash 06-15-2013 12:05 PM

Quote:

Originally Posted by VinnyBags (Post 1201580)
Great thanks. 2 more questiions..

1. Do i need to leave space at the points where the ceiling meet the walls for ventilation? There is a gap all arouund the attic where you see daylight under the soffit so i assume that is for airflow.

2. Do I only need to insulate the outside walls or should I also insulate the interoir between the bedrooms?

3. Do I install insulation in the open bay where my air return is for the forced central heat and air.

  1. Yes. You need uninterrupted flow from the soffits to the ridge/vents.
    1. Is the attic an open design or a vaulted ceiling application where the rafters are drywalled on the interior?
  2. From an energy standpoint, it is not required. From a noise standpoint, it is advisable.
  3. Not sure of the question or application here.

jagans 06-15-2013 08:50 PM

Quote:

Originally Posted by VinnyBags (Post 1201580)
Great thanks. 2 more questiions..

1. Do i need to leave space at the points where the ceiling meet the walls for ventilation? There is a gap all arouund the attic where you see daylight under the soffit so i assume that is for airflow.

2. Do I only need to insulate the outside walls or should I also insulate the interoir between the bedrooms?

3. Do I install insulation in the open bay where my air return is for the forced central heat and air.

1. There should be an air space from the soffit over the top plate of the exterior walls up to the ridge vent. Basically, you want the temperature on the underside of the roof deck close to the outdoor temperature to prevent the dew point from falling on the underside of the roof deck.

2. I would recommend insulating the interior walls after you rough in your electric. You are going to want some sound suppression down the road when your little one is not so little any more.

3. No, you do not want to obstruct air flow through the return, however, you may want to put insulation from the return grille up to the top plate, but you want to seal off the insulation above with wood blocking.

VinnyBags 07-08-2013 12:28 PM

I installed the insulation with the baffels and it worked great.


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