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.

How do you attach a shed roof to an existing roof?

Install shed rafters from the ledger board to the outer wall, using metal rafter hangers, which attach to the ledger board with screws or nails. Fit rafter board into the U-shaped hangers and nail it in place. Add decking atop the roof and nail on metal flashing where the shed roof joins the existing roof.

How do you attach a porch roof to a house?





To connect a porch roof to your house, begin by:

  1. Building a support column to give your porch roof stability.
  2. Attach the sill plate to the house.
  3. Position the rafters on top of the sill plate.
  4. Frame your porch roof.
  5. Cover the rafters with sheets of plywood.
  6. Choose a roofing material.

Can you attach a patio cover to fascia?

Patio Covers directly attach to your homes fascia board with the included hanger, your fascia board needs to be a minimum of two inches thick and allow enough space for the hanger to attach.

How do I put a roof over my existing roof?

Roofing over an existing roof is also called reroofing or an overlay. It is the process where roofers install a new roof over your existing one, i.e. add a new layer of shingles, which means that there is no tearing off of the old roof.

How do you join two roofs together?

How to Join the Roof Pitches?

  1. Step 1 – Preparing the Area. …
  2. Step 2 – Measuring the Length of the Joined Area. …
  3. Step 3 – Prepare a Piece of Flashing Material. …
  4. Step 4 – Place the Flashing on the Meeting Point. …
  5. Step 5 – Sealing the Edges of The Roof with Lumber. …
  6. Step 6 – Apply a Bead of the Sealant Material.

Can you add a roof to an existing deck?





Can I put a roof over my deck? In most cases, yes! If you’re looking to add a roof to your deck, you can do this by installing additional supports. Unless you have construction experience, it’s best to hire professionals to do this for you.

What is the roof over a porch called?

A portico is a porch leading to the entrance of a building or extended as a colonnade with a roof structure over a walkway and supported by columns and may be enclosed by walls. This idea was widely used in Ancient Greece and has influenced many cultures, including most Western cultures.

Is it possible to raise the roof on a house?

Generally, there are two types of roof structures: stick and truss. Truss roofs are the ones that are easier (and most commonly) raised. You can still raise stick roofs, but it will most likely require you to tear down the existing roof and rebuild the structure.

Is it OK to put a new roof over an old one?

You can only install a new roof over an old one if the old roof is completely flat and level. Several factors might cause the existence of curling shingles; therefore, it is advisable to involve a professional roofer to determine the cause and replace the shingle before proceeding to a re-roof.

Is it OK to roof over existing shingles?



Installing a new roof over shingles takes less time than tearing off the old roof. Looks just as good and lasts as long. As long as it’s done right and under the right conditions, installing new shingles over old ones can last as long and look just as good as a complete re-roof. Has the same manufacturer’s warranty.

Is it better to remove old shingles?

While a repair job can often be more convenient and somewhat more cost-efficient, placing new shingles over old ones is never a good idea. Whether repairing one section of roof, or a replacing a whole one, it’s always best to pull up the old shingles before putting down the new ones.

Should I tear-off my old roof?

In most cases, more than two layers of roofing shingles does require a tear-off. Laying new shingles over old shingles is easily prone to leaks and reduces the life of the new shingles. This alone ought to be reason enough to do a tear-off; it’s just a bad value not to.

How long does a roof overlay last?



sixteen years

Overlays have a Viable Life
An overlay is a viable option if the existing roofing materials have not already been overlaid. Home Reference.net notes that on average you can expect the overlay to last for fifteen or sixteen years.

Is it OK to overlay a roof?

Yes. And in fact, that’s the primary reason a homeowner opts for an overlay roof. Since an overlay roof is just put on top of the existing roof, your roofer’s crew doesn’t have to tear off your existing shingles, redeck the roof, or do as much cleanup.

Can I install metal roof over shingles?

In almost every case, the answer is yes, you can lay down a new metal roof over an existing shingle roof. This is one of the many reasons metal roofs keep growing in popularity – their installation doesn’t require completely tearing off the existing roof, which is a time-consuming and expensive job.

Should I overlay my roof?



A: In general, it is not good practice to overlay a traditional asphalt shingle roof versus a complete tear off and replacement for the very reason you stated: you can’t examine the decking to determine if there is any damage that needs repaired.

What is a flat roof overlay?

The ROCKWOOL Flat Roof Overlay Board is a stone wool board that has been engineered to last the lifetime of the roof system and can be compatible with a wide range of membranes, including torch applied bitumen, GRP, Liquid Waterproofing, Singly Ply and EPDM.