Roof Top Ledger Attachment Details

Attaching to the Roof Top is an option that can only be accomplished in non-snow areas and typically done to obtain the most height available, this is especially true for homes that have a low roof overhang height. The stanley 8" 90 degree elbow type brackets, lag bolts, a 2"x ledger board and caulking are all the materials needed for a roof top ledger board installation; the installation is simple and only takes about one to two hours to complete.

View photos of the Roof Top Ledger Board Installation.

Is attaching a ledger board to your Roof a smart idea?:

When installing a roof top ledger board there is a real concern regarding potential leaks; the lag bolts are caulked when they're installed which does help however there is always a potential for a leak to occure. Same problem can occur for anything that is installed onto a roof such as a sattelite dish or solar panels, this is an issue each customer must make for themselves prior to purchasing. The one benefit for the roof top ledger is that the lag bolts are not installed on or before the wall line eliminating any possibility for water leaks inside the wall or attic, any leaks will be visible from the underside of your roof overhang.

Some eave overhangs are strong enough to handle the aluminum awnings additional load and some are not; the list below displays the variables that determine if your eave overhang is strong enough based on the products IBC 2006 Engineering Report and you can apply your information to the eave overhang design table.

• Rafter Size
• Rafter Spacing
• Roof Overhang Projection
• Size of Desired Awning Cover
• Design Load
• Wind Factor & Exposure

Note: The eave overhang table is for fascia attachments however the product engineering uses the same table for roof top attachments. Keep in mind that the table has snow applications listed however the roof top ledger attachment is for non-snow applications only. The only exceptions are for carports in non-snow areas as there minimum design is a 20lbs snow load; carports are classified differently than patio covers and pergolas.