Forums | Home Repair | Home Improvement | Painting | Interior Decorating | Remodeling | Landscaping


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Roofing/Siding

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 02-10-2011, 04:11 PM   #1
Newbie
 
Join Date: Feb 2011
Posts: 8
Share |
Default

Frost in attic


Hi guys,

I am a new homeowner and recently had insulation blown into my attic at the rate of R40. There seems to be a small amount of frost near the bottom of my attic roof, towards where the soffits/sheathing may be. Should I be concerned by this? What may be causing this? I installed a few small soffit vents back in September, but I'm worried there still might not be enough air flow. Any suggestions/help would be greatly appreciated.

Thanks!
mulherin31 is offline   Reply With Quote
Old 02-10-2011, 04:23 PM   #2
DIY staff
 
Join Date: Sep 2009
Location: Kane county,Illinois
Posts: 20,390
Default

Frost in attic


Yes you should be worried----Did you put baffles into the soffits before the insulation was blown in?

You should be able to stand in your attic with the lights off and see light coming in through the soffits.

You might want to install full louvered soffit covers if your house can use them.

The damage to your house can be substantial----find the cause and fix it --pronto.---Mike--
__________________
New members: Adding your location to your profile helps in many ways.--M--
oh'mike is offline   Reply With Quote
Old 02-10-2011, 08:16 PM   #3
Newbie
 
Join Date: Feb 2011
Posts: 8
Default

Frost in attic


Thanks Mike, Baffles were installed in the soffit vents. Also, the only area I have seen is over the garage which is opened and closed quite frequently.

We recently had an ice storm here in Indy and there is pretty substantial amount of ice on the roof and in the gutters. Could this be a cause for the frost or is it air flow???

Thanks!
mulherin31 is offline   Reply With Quote
Old 02-10-2011, 09:35 PM   #4
Registered User
 
Join Date: Mar 2009
Posts: 9,883
Default

Frost in attic


The ice dams are from heated air leaks to the attic from living spaces below. Many times ineffective wall insulation will have convective loops that deposit the heat to the top plates which have minimal insulation between them and the roof structure. Wire holes, etc. let air from below into the attic combined with lacking ventilation of the attic = ice dams; http://www.buildingscience.com/docum...d-135-ice-dams Did you completely air seal the attic before adding the insulation? http://www.google.com/url?sa=t&sourc...O842EQ&cad=rja

You need a balanced attic venting system, just adding more may not solve your problem. On the other hand, how much attic venting do you have? Number, size of intake (soffit) vents, number, type of exhaust vents, powered, static, etc.

Gary
__________________
Clothes taking longer to dry?
Clean the dryer screen in HOT water if using fabric softener sheets.
They leave a residue that impedes air-flow, costing you money.
Clean the ducting in the last six months? 17,000 dryer fires annually!
Gary in WA is offline   Reply With Quote
Old 02-10-2011, 10:13 PM   #5
Newbie
 
Join Date: Feb 2011
Posts: 20
Default

Frost in attic


Does the frost run the whole perimeter of the attic, or just certain areas? Somehow moisture is infiltrating your attic. Take a look and see where your dryer vent, bathroom fan, etc. are venting and try to pinpoint where the water is creeping in.
SuperHans is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Attic Frost Attic Roofing/Siding 2 01-15-2011 10:19 AM
Attic Frost Attic Roofing/Siding 8 01-11-2011 10:52 AM
Frost in attic bricks4u Roofing/Siding 7 02-25-2010 11:38 AM
Attic Frost cougar01 Building & Construction 5 01-28-2009 08:33 AM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.