COMMUNITY FORUM

dweinst

11:47AM | 01/01/06
Member Since: 12/31/05
1 lifetime posts
Bvroofing
20 yr old house, just bought in may; put new roof on/soffit vents installed; have ridge vent & insulation in attic. Ice daming and icecicles still forming over back of house. Icecicles seem to form mostly at roof edges-Any possible answers/solutions??

pgriz

06:20AM | 01/10/06
Member Since: 01/21/03
66 lifetime posts
DWEinst, I have written a document for my customers to give them some background to the roofing and ventilation issues we have to deal with. If you are interested, let me know and I'll e-mail you a copy (it's in PDF format).

However, to briefly review:

1) is there enough ventilation? (1:300 is the minimum, 1:150 is desired)

2) is the ventilation balanced? (is intake equal to exhaust?)

3) is there any obstruction between the ventilated soffit and the attic space (blocking insulation, incompletely cut soffit wood, blocking header board, etc.)

4) are the outlet vents high enough on the roof to allow proper circulation by convection?

5) are the vents positioned so that they short-circuit each other?

6) is there enough insulation for your climate?

The fact that icicles are forming means heat is being lost from the house into the attic, and there is not enough ventilation to carry away this heat before it melts the snow on the roof.
Click_to_reply_button
  • People_also_asked_iconice dams Hi. I have a 20-27ft family room w/13ft cathedr...
    5 REPLIES
  • People_also_asked_iconIce Dams Someone told me that there is some type of item...
    4 REPLIES
  • People_also_asked_iconFelt and Ice Sheild.... I've gotten roof replacement estimates from 3 c...
    4 REPLIES
  • People_also_asked_iconICE DAMS What is needed to prevent ice dams. Is it costl...
    3 REPLIES
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

Anonymous

Post_new_button or Login_button
Register

Melt a rainbow of crayons with a hairdryer for a funky and fun pumpkin. Beforehand, try painting the pumpkin in a bright c... 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 entryway 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... Yes, a freestanding garage can become its own tiny house. Artist Michelle de la Vega has all the comforts of a modern resi... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... A kitchen in a greenhouse—who wouldn't enjoy spending time in this light-filled space? Details that enhance the conservato... Chalkboard paint features prominently in this elegant yet unpretentious headboard design. Add a new message daily to reflec... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... 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... The Infinite Artisan Fire Bowl from Eldorado Outdoor is made from glass-fiber reinforced concrete, and offered in Oak Barr... The vibrant green of Granny Smith apples make a beautifully natural alternative to the traditional evergreen wreath. Brigh...
Follow_banner_a
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon
 
webapp2