02:39AM | 02/21/03
Member Since: 02/20/03
1 lifetime posts
I currently have blown in fiberglass insulation in my attic with no vapor barrier. I want to add some more insulation but I been getting some mixed answers. Here are my questions. (house is 17 and I live outside of philadelphia pa)

(1) Should I add a vapor barrier. I don't see any moisture problems in my attic and the house is 17 years old. My soffits are all vented properly.
(2) If yes (add vapor barrier) should I use plastic sheeting or just use the faced insulation. I know that I have to put the vapor barrier under the blown in insulation. The extra work doesn't bother me. My concern is that the plastic sheeting in not going to be the best solution because I got to work around all of the wires and pipes that already exist in the attic. So it won't be continous.

(3) Does anyone have experience with radiant barrier chips? I have been told just to add them instead of the insulation.

Any comments would be great.



06:54PM | 02/21/03
Member Since: 01/28/03
693 lifetime posts
Ok. You have blown in fiberglass insulation in your attic.

You want to add insulation.

No problem so far.

The question relates to a 'vapor barrier'.

The ANSWER is: you DO NOT need to add any type of 'vapor barrier' in the attic whn adding insulation. Period.


Because 'vapor barriers' come in all shapes ans sizes.

PAINT is a 'vapor barrier'.
DRYWALL is a 'vapor barrier'.

The POINT is, you do NOT need to do anything other than to lay unfaced fiberglass batts OR spray in more loose fill fiberglass to increase the insulation in your attic.

If you want to know all the scientific and technical reasons WHY, just ask....


04:01PM | 02/25/03
Member Since: 09/05/02
3 lifetime posts
I'm kind fo curious about the extra info!

I'm in the process of doing the same thing (add insulation to my attic).

my house is much older (85 yrs)
there's partial blown in and even some batt insulation between the joists. seems like old stuff. .yellow with a black paper on one side and brown paper on the other.. on top of that there;s loose fill. i'm just gonna make sure all the gaps are filled with loose fill and the I was gonna put a blanket of batt insulationon top of the floor. (the attic floor is partly covered)

I was a little worried about the vapor barrier part..but most everyone I talk to say it's not that big a deal (for the attic)

so..lead me to all this extra info


Click to reply button
Inspiration banner


Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.

Reply choose button


Post new button or Login button

To test the boundaries of small-footprint living, interior designer Jessica Helgerson moved her family to a 540-square-foo... Filling an underutilized area beneath the stairs is a smart way to save space. Doing so with a stash of wood, however, is ... The Audubon Society inspired wallpaper in this Adirondack-styled mudroom will get you in the outdoor mood. Grab your coat ... Chalkboard paint opens up endless possibilities for customizing your dresser time and time again. Use chalk to label the c... A fireplace in the bathroom creates the ultimate setting for relaxation. Homeowners often choose electric or gas over wood... This roomy boot tray made from punched metal stands up to all the elements. Station it in your mudroom or at your back doo... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... FLOR tiles are an affordable way to customize a carpeted floor covering for any space. Make anything from runners to wall-... Chalkboard paint features prominently in this elegant yet unpretentious headboard design. Add a new message daily to reflec... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... The indecisive homeowner need not fret over choosing one (or even two) cabinet colors. The kitchen cabinets in this artist... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... First dress up your metal shelves with a coat of paint in an accent color that complements your kitchen decor. Then arrang... Dark wood shelving and a matching upholstered bench keep this closet sleek and refined. The large window brightens the sub...
Follow banner a
Newsletter icon Flipboard glossy Facebook Twitter Pinterest Youtube Rss icon