Attic Vent Questions - Building & Construction - DIY Chatroom Home Improvement Forum


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction

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

Reply
 
Thread Tools Display Modes
Old 06-12-2009, 03:54 PM   #1
Newbie
 
Join Date: Jan 2008
Location: Iowa
Posts: 23
Rewards Points: 10
Default

attic vent questions


I have an approx 1500sf hip roof on a single story ranch and I'm about to install an electric attic vent in place of the middle of 3 current passive vents which are only about 50si each and have a few questions.

First, what is the best way to block off the other 2 passive vents so the fan does not suck air from them? I'm not reroofing soon so external appearance will probably remain the same. I do have a partial bundle of shingles though if its not too hard to patch. (I'm adding plenty off soffit vents so I'll have adequate intake)

Second, what kind of roofing nail should I use? There seems to be so many types and I'm not sure which to get?

Thanks!

Advertisement

Grimace is offline   Reply With Quote
Old 06-12-2009, 08:16 PM   #2
Kyle Emerick
 
kemerick's Avatar
 
Join Date: Sep 2007
Location: Vista, CA
Posts: 106
Rewards Points: 75
Default

attic vent questions


Depending on whats on the back/underneath, I would plywood under (in the attic) and then fill the outside with the correct thickness of wood so it does not stick up.

Regarding the nails, make sure you dont use ones that are too long. I have made the mistake before and it makes it interesting when you bump your head when using the attic.

Advertisement

__________________
My constant project is my home which was built in 1947. We have remodeled almost all of it and added 1000 square foot in 2007. Lars Construction got me up to drywall and I did the rest.
kemerick is offline   Reply With Quote
Old 06-12-2009, 09:54 PM   #3
Registered User
 
Join Date: Mar 2009
Posts: 9,977
Rewards Points: 2,020
Default

attic vent questions


Use 1-1/4" hot dipped galvanized roofing nails. The nail point is required to come through the sheathing if 1/2" or 5/8". Use 3/4" sheathing, the nail is required to go 3/4" into it, no shorter. That is why you should see nails when 1/2" ply or 7/16"osb is used, if not , improper nail application.
Read the shingle wrapper. Be safe, G
Gary in WA is offline   Reply With Quote
Old 06-13-2009, 07:59 AM   #4
Member
 
Join Date: Dec 2008
Location: South Western Ontario
Posts: 955
Rewards Points: 500
Default

attic vent questions


Don't know much about these fans but I would do some homework before taking the big plunge. A fan with no air inflow only creates a vacuum.

Could you solve this by adding more top vents and increasing intake through soffit area? There needs to be a balance of flow coming in as well. Try re posting this under roofing for more feedback

Didn't see what are you live in, is the heat extreme?

Check out this site www.buildingscience.com for attic ventilation inf.
o
Chemist1961 is offline   Reply With Quote
Reply


Thread Tools
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
toilet wet vent questions (with sketch) Queso Bandit Plumbing 3 03-28-2009 08:15 PM
Soffit Vent Sizing - Really Hot Attic dmo069 Roofing/Siding 7 12-04-2008 10:33 PM
HOT attic, ridge vent/soffit vent questions gone_fishing Roofing/Siding 36 07-14-2008 10:26 PM
is an attic vent required for cedar shingle roof? walenta Building & Construction 2 10-25-2007 11:31 AM




Top of Page | View New Posts