FAQ: How To Flash A Porch Add On Roof To Existing House With Vinyl Siding?

FAQ: How To Flash A Porch Add On Roof To Existing House With Vinyl Siding?

How do I attach a porch roof to vinyl siding?

  1. Step 1 – Plan Ahead. Adding a new roof to a porch will require quite a bit of preplanning.
  2. Step 2 – Check to See If the Porch Is Level.
  3. Step 3 – Place the Support Beams.
  4. Step 4 – Install the Top Plate.
  5. Step 5 – Install the Rafters.
  6. Step 6 – Cover the Roof.
  7. Step 7 – Connect the House and the Porch Roof with Flashing.

How do I add flashing to existing siding?

INSTALL FLASHING UNDER SIDING TO STOP LEAKS. A-The flashing was not properly installed. It should go under the bottom two rows of siding, then fold it out over the roof for at least 8 to 10 inches. In other words, you will have to rip off the bottom rows of siding to install the flashing, then replace the siding.

How do I flash my porch roof to my house?

Place the flashing between the joint of the house and the roof. The flashing on the wall should be flush against it, and the porch roof portion should be on top of the shingles. Nail the flashing securely in place using roofing nails. Try to keep the nails as flush as possible to the edges.

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Does roof flashing go under siding?

In certain instances flashing may need to be installed on the exterior of siding. However, in most instances, step flashing should be installed “ behind ” siding. It is always recommended to install step flashing behind stucco, Dryvit, wood panel, lap siding, vinyl siding, cedar shingle siding, etc.

How do you attach a patio roof to an existing house?

Cut one side of the horizontal roof beam on an angle so that the rafters sit flush on it. Using your nail gun, attach the horizontal beam and cut the two outer rafters to sit flush on top of the existing house roof. Install the two outer rafters and attach a plain rafter beam to the very edge of the existing roof.

Can you put ledger board over siding?

In order to install the ledger board, you usually need to remove the house’s siding. Never install a ledger board over the top of siding no matter what you hear, this can weaken the connection. Set the blade depth so you won’t cut into the house sheathing below the siding.

How do you install kicking flashing on an existing roof?

Tips for Installing Leakproof Kickout Flashing

  1. Step 1: Waterproof the wall.
  2. Step 2: Flash the roof and roof -wall connection.
  3. Step 3: Install the kickout flashing.
  4. Step 4: Weave in the step flashing.
  5. Step 5: Flash the step flashing.
  6. Step 6: Button up the housewrap.

Should I roof or siding first?

Roof always goes first on a renovation That way the roofers can’t damage new siding or windows when ripping off the old roof. Windows usually go in before the siding that way they can be flashed and sealed properly. Siding and exterior trim goes last out of those 3.

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How do I fix a leaking porch and house?

The fix could be as simple as caulking a joint or crack to properly flashing the joint where the siding and porch intersect. If the leak is where the siding and the porch meet, the short-term fix is caulking the joint for now, but plan on installing proper flashing later.

How do I stop my porch roof from leaking?

The Best Ways to Seal a Leaky Patio Roof Fill a caulking gun with a watertight polyurethane or oil-based sealant and hold it at an angle to insert the product directly into the gap. Apply the sealant in a smooth bead all the way along the gap. Check the joints of a corrugated metal or plastic roof.

What are the different types of roof flashing?

4 Types Of Roofing Flashing

  1. Drip Edge. Along your roof’s edges (eaves), drip edge flashing is necessary to prevent water from an overfilled gutter from pushing its way up the edge of the roof underneath the shingles.
  2. Valley Flashing.
  3. Vent Pipe Flashing.
  4. Step Flashing.

Where should Flashing be used on a roof?

Flashing is installed to surround roof features, such as vents, chimneys and skylights. Water should run down the side of the flashing and be directed to the shingles instead of finding its way into the roof deck.


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