4 inches should go up the house wall and 4 inches should go on top of the porch roof shingles.
Flashing a deck roof to house.
Make the outline large enough to include space for the deck boards on.
These 18 articles will teach you how to install flashing and bolt the ledger connection to the house rim.
A deck is a functional and often beautiful addition to a home.
Flashing a patio roof ledger.
One of the most important aspects of deck contsruction is the proper installation of deck ledger board flashing.
Now you can begin assembling the outer rafters and attaching the rafter beam to the edge of the roof of the house.
In the past metal flashing and extra layers of roofing felt tar paper were often used but nowadays vinyl z flashing and rolls of vinyl back flashing do a better job.
Without it the deck and the ledger it s attached to will quickly rot.
Then with back flashing.
Detailed photos in this article show the difference.
Start by making an outline on the siding where you want to position the ledger board.
Open valleys have metal flashing to protect this critical area of the roof.
While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately.
With proper flashing a wood deck will last many years.
Step 6 make a 10 degree bend on the shingle edge of the flashing approximately 1 2 inch from the edge.
Snap a chalk line cut out the siding and tack up the ledger board.
Ideally the house s sheathing should be triple protected from moisture with building paper or roofing felt stapled to the sheathing.
Cut each of the house ends while continuing installing the rafters so that they fit the top of the rafter beam perfectly.
After you demolish the old deck but before you start work on the new one you ll need to make sure the wood on and in.
Most flashing is 8 inches wide.
Then slip flashing behind the siding covering the top edge of the ledger.
Properly installing a ledger board for your deck is one of the most important structural components of building a safe and strong deck.