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Proper Way to Attach a Porch Roof to the House

69STINGRAY's picture

 

Hello All- it has been a while since I have been on this forum. I am gladded nothing has changed, a lot of great posts.

 

I am starting my next project. I am tearing out my cement stairs and replacing with wooden stairs and adding a roof over it.

 

I need to know the best way to tip the roof back into the house. I want to extend the current roof over the stairs.  Where the current roof intersects the houses is between floors, so I do not believe I have a ledger board to attach to. (red line on sketch roof_one.jpg).

 

Do I need to add horizontal joists to connect the rafters back to the house? (green line on sketch roof_two.jpg)

sting (post #202701, reply #1 of 9)

Cut the siding away so you can properly flash your new roof.

If there is board or plywood/osb sheathing on the wall, you can leave that.

Fasten your ledger to each stud-structural screws/lags would be the easiest to drive using an impact drill.  You can nail if you wish with the proper sized fasteners.   All that bashing could loosen the connection of the drywall to the studs.

Coming back to the house with joists is not necessary.

 

You say you are tearing out the concrete stairs and replacing with wood.  What is going to hold up the new roof extension?  Posts on footings with beam?  Full wall on foundation?

A Great Place for Information, Comraderie, and a Sucker Punch.

Remodeling Contractor just outside the Glass City.


http://www.quittintime.com/

 


Thank you for the reply.  (post #202701, reply #2 of 9)

Thank you for the reply.  Just to be clear, the horzential joists are not necessary and I can tie the top of the roof to a ledger that is connected to the studs of the exterior wall?  The construction of that wall is 2x6 framing with sheathing (not sure of thickness yet) and 1.25" foam board over that.  I will remove the foam board where the new leadger is.

I plan on 10" round footings with 6x6 post to support the new roof.  The stairs will not reach the front door, so there will be a small deck between the front door and the top of the wooden stairs.

I will attach a sketch before i go for permit so everyone can have a look!

     Coming back to the (post #202701, reply #3 of 9)

 

   Coming back to the house with joists is not necessary.

    You say you are tearing out the concrete stairs and replacing with wood.  What is going to hold up the new roof extension?  Posts on footings with beam?  Full wall on foundation?


 

I think the answer to that determines if he needs the joist back to the wall!

YAY!  I love WYSISYG editing!  And Spellcheck!

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How so? (post #202701, reply #4 of 9)

Beam or wall, do you think it necessary to hold in the eave edge of that small shed roof?  You don't think a secure ledger and proper footing below the posts or wall will hold it from going anywhere?

A Great Place for Information, Comraderie, and a Sucker Punch.

Remodeling Contractor just outside the Glass City.


http://www.quittintime.com/

 


Actually I was wondering if (post #202701, reply #6 of 9)

Actually I was wondering if there was going to be ANYTHING under that, or if it was just going to be a cantilevered unsupported roof ledge.

YAY!  I love WYSISYG editing!  And Spellcheck!

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PaulCP (post #202701, reply #5 of 9)

Yes, 4-10" diameter footings with 6x6 posts. 

Roof Support Post (post #202701, reply #7 of 9)

Attached are some sketches (not drawn to scale).  The one question I have is, can I get not use the 6x6 post closest to the existing mudroom and repalce with a 4x4 connecting the roof plate (2-2x6) to the mudroom wall?  I need a wat to supprt that very end fo the roof plate.

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OH HOLD (post #202701, reply #8 of 9)

I had to put htis project on hold.  It appears that this year's bonus and tax return will be spend on a medial procedure not covered by insurance, joy.  thanks for all of the help.

Sorry to hear it.  I hope the (post #202701, reply #9 of 9)

Sorry to hear it.  I hope the outcome is good.


Of all the preposterous assumptions of humanity over humanity, nothing exceeds most of the criticisms made on the habits of the poor by the well-housed, well-warmed, and well-fed.  --Herman Melville