COMMUNITY FORUM

mattlina

08:15AM | 09/25/05
Member Since: 09/24/05
3 lifetime posts
Bvhvac
Hi, I have an unfinished attic with cellulose insulation on the floor. We are about to lay down another layer of fiberglass insulation over that, since it's a little compressed.

All my research shows that all the electrical devices in the ceiling(floor of attic) should be 3" clear of any insulation. However, they are all completely covered with cellulose! Should I clear the cellulose away, or does the 3" rule only apply to fiberglass? The electrical outlets visible in the attic are white plastic. Thanks in advance for any answers?

Mike

Billhart

09:13AM | 09/25/05
Member Since: 04/25/05
1918 lifetime posts
That rule is for can lights that are not rated for insulation contact. If they are rated for contact they are marked IC.

And if you have any old activeknob and tube wiring that should not be covered at all.

Those rule apply reguardless of the type of insulation and are based on the ability of the electrical equipment to handle the heat.

There are no restriction to cover boxes for ceiling lights and fans.

Insulation manufactures might have additonal limitations.

For celulose the R-value is based on the settled height so measure and see if you want to add mroe.

And I would not add FG, but more celulose.

I have not seen any studies on this, but the R value of FG is measured with it between 2 solid surfaces. I suspect that the effectivemenss is much less when it is open to the air and FG allows air to move through it.


mattlina

10:06AM | 09/25/05
Member Since: 09/24/05
3 lifetime posts
Now all my ceiling lights on the top floor are below the level of the ceiling. So the light is not "in" the attic. Furthermore, I put in small flourescent lights instead of incandescent lights to save energy. Since they don't give off as much heat, I assume I do not have to make space around the cellulose?

Also, any explanation as to why to choose cellulose over FG? It seems is would be easier to roll it out?
Click_to_reply_button
Inspiration_banner

INSPIRATION GALLERY



Post a reply as Anonymous

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

Reply_choose_button

captcha
type the code from the image

Anonymous

Post_new_button or Login_button
Register

Painting your front door a striking color is risky, but it will really grab attention. Picking the right shade (and finish... Built on a rocky island in the Drina River, near the town of Bajina Basta, Serbia, this wooden house was cobbled together ... Large steel-framed windows flood the interior of this remodeled Michigan barn with daylight. The owners hired Northworks A... Edging formed with upside-down wine bottles is a refreshing change. Cleverly and artistically involving recycled materials... A Washington State couple called on BC&J Architects to transform their 400-square-foot boathouse into a hub for family bea... Similar to the elevated utensil concept, hanging your pots and pans from a ceiling-mounted rack keeps them nearby and easy... For windows, doors, and mirrors that could use a little definition, the Naples Etched Glass Border adds a decorative flora... The thyme growing between these stepping stones adds a heady fragrance to strolls along this lush, low-maintenance garden ... Decoupage is an easy way to add any paper design to your switch plate, whether it is wallpaper, scrapbook paper, book page... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Reluctant to throw away any of those unidentified keys in your junk drawer? Hang them from a few chains attached to a simp... A stripped-down model, sans screened porch, starts out at $79,000. Add the porch, a heated floor for the bath, and all the... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... This garden shed has been decked out to the nines. Designer Orla Kiely created the intimate home for a flower trade show, ...
Follow_banner_a
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon
 
webapp2