10:20AM | 04/04/05
Member Since: 02/26/01
35 lifetime posts
I’m not sure if this is the correct forum or if this should be in roofing but here goes. I bought a 70 year-old house in Northern Virginia and have a chronic problem with snow/ice melting on the roof (probably causing ice dams and definitely allowing roof full of snow/ice to slide down and damage gutters, etc.). I have insulated the attic (R-30) but the house is balloon-type construction so there is still warm air leakage in the winter. (I’m working on that but it’s a long-term project.)

The question is: can I install the insulated foil board across the rafters to help prevent the heat from reaching the shingles and snow/ice? I know this is debated for summer use but what about this application. I have a small vent on each gable end that allows for passive air movement but that doesn’t seem to be enough. I neighbor also suggested a small exhaust fan to pull cool air into the attic but I don’t want an active system, plus this will probably just draw more warm air into the attic from the house (that idea might work if the heat source was radiant heat from the upper floor ceiling.)

Thanks for any insight.


12:54PM | 04/09/05
Member Since: 01/28/01
171 lifetime posts
With R-30 in the attic, I don't know if radiant heat is the problem. Did you use two crossing layers of insulation or use blown in insulation to block air flow?

A passive system could include eave vents (which you should have anyways) and a ridge vent. Your problem may be too little air movement.


Post a reply as Anonymous

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


type the code from the image


Post_new_button or Login_button

Even if you turn off your electronics whenever you're not using them, they continue to use energy until you unplug them. S... Filling an underutilized area beneath the stairs is a smart way to save space. Doing so with a stash of wood, however, is ... For some decorative recycling, consider burying old bottles upside down to create edging for your garden beds and walkways... Chocolate-colored walls and large window frames allow the exposed wood beams to take center stage in this small screened p... If you're not crazy about the idea of commingling plants and pool, this modern variation may be more to your liking. The s... 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... Filling an underutilized area beneath the stairs is a smart way to save space. Doing so with a stash of wood, however, is ... Like no other floor type, a checkerboard design works wonders to underscore the retro kitchen theme. Vinyl flooring, ceram... 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... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... For the cost of a can of exterior paint , you can totally transform your porch. Paint the floor a hue that complements yo... In this urban apartment, a standard-issue patio became a serene and green perch by replacing the typical concrete with gro... If you put the washing machine in the mudroom, you can stop the kids from walking through the house in dirty, grass-staine...
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon