How Do I Install An Attic Fan On A Gravel/tar Roof? - Roofing/Siding - DIY Home Improvement | DIYChatroom


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

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

Reply
 
Thread Tools Display Modes
Old 11-22-2009, 01:01 PM   #1
Newbie
 
Join Date: Nov 2009
Location: Virginia/DC
Posts: 1
Rewards Points: 10
Question

How do I install an attic fan on a gravel/tar roof?


I am in the process of installing a standard attic fan for a customer who has a gravel and tar roof. I have installed hundreds of fans and I am well aware of the risks. The surface is almost flat which means... no gable! This is the only option and installing a flashing on the roof is our final choice. Please respond only with tips on how to do it on the specified roofs, all other options have been explored.

Thanks!

Dude.

Advertisement

Electrical Dude is offline   Reply With Quote
Old 11-22-2009, 05:11 PM   #2
Newbie
 
Join Date: Apr 2009
Posts: 29
Rewards Points: 25
Default

How do I install an attic fan on a gravel/tar roof?


I'm not quite sure that I understand the situation entirely, but what about building a small box and mounting the fan to that? Then you could tar around the box and then flash/counterflash.

You might want to make sure this isn't in a low point in the roof or ponding might present a problem for your freshly sealed hole.

Advertisement

meltdowndave is offline   Reply With Quote
Old 11-22-2009, 08:00 PM   #3
Pro Slate Roofer
 
tinner666's Avatar
 
Join Date: Mar 2005
Location: Richmond, Va.
Posts: 1,611
Rewards Points: 1,038
Default

How do I install an attic fan on a gravel/tar roof?


Use a gravel bumper and clean the gravel back about 18"-24" on each side. If you tear into the felt anywhere, keep bumping to clear a larger area. Build your box 1" smaller than the fan housing, install the curb, then using a mod-but torch, heat and bend in at least 2 layers of mod-bit. Pay special attention to the corners, and run the mod-bit to the top of the box. Install the fan housing, which should cover the mod-bit about 2". That's your counter-flashing. Touch up any edges with Karnack Ultra19, I believe. Read the can to make sure it's compatible with the APP mod-bit you used.
tinner666 is offline   Reply With Quote
Old 11-22-2009, 08:03 PM   #4
Member
 
Join Date: Nov 2009
Location: central virginia mountains
Posts: 1,857
Rewards Points: 1,000
Default

How do I install an attic fan on a gravel/tar roof?


nicely done Tinner
tpolk 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
Recently Topped Up Attic with Blown Insulation...Now I have Frost/Condensation earthad1 Building & Construction 81 02-18-2011 01:42 PM
venting metal roof for attic conversion nelsonC Roofing/Siding 14 01-21-2010 03:32 AM
Attic moisture Carstonio Roofing/Siding 14 01-29-2009 12:35 PM
Attic gable fan install mattmcl HVAC 2 04-23-2008 10:26 PM




Top of Page | View New Posts