Decks, Patios, Porches and Docks - Decks

I have a 12 X 12 deck that I want to put a shingled roof on. I want the roof to be independant of the deck. i am planning on putting a ledger board on the house to tie the rafters into. On the outside edge i am planning on using 4 X 6's, planning on using 4. I have a few questions. Are the 4 4 X 6's eonough support? Is it better to use some sort of post support anchor rather than sinking the posts in concrete? What is the smallest pitch on the roof I can have? Any help would be appreciated.

Thanks,
Tom

Hello
Need more information to be able to offer any help....
How high from the ground is the deck?
How high from the deck can you install the ledger board?
What type of shingle are you installing?
How do you plan to hold the roof from moving if you do not attach to the deck?
Are you in a windy are that could be a problem with up lift?
4x6 post...what about rafters and beams to set the rafters on?
If the post are PT they can be set in concrete this adds support from the roof moving side to side and up......let me know.....Good Luck

Deck at highest pint is 3 1/2 feet off the ground. Ledger board on house will be 11 feet off the deck, ledger board on other end will be either 7 or 8 feet.

I will be usung regular roofing shingles.

The 4X6 will be bolted to the front of the deck.

I will be using a ledger board connecting the 4X6's (2X8 or 10's?) and then running rafters (again 2X8 or 10's?) from the ledger board on the houser to the ledger board on the posts. ( does that make sense, have I expalined it correctly.)

I will be usung treated posts but I still have seen treated posts rot in the ground, which is my concearn. Wind isn't that great of a concearn.

Thanks for the reply, look forward for more info.

Thanks,
Tom

Your first stop should be at your local bldg. dept. to determine what snow and wind loads you have to build for. That will determine what you need as far as rafter sizes and spacing, post sizes and spacing, beam size, etc.

The pitch of the roof will tell you if asphalt shingles are you best choice. If the pitch is less than 3/12, you will have no warranty on the roofing. You might be better suited using a metal roof.

If you embed the posts directly in concrete, they will rot. A better method would be to embed a post base like a Simpson EPB44A or PB44 in the concrete and attach the post to that.

HELLO TOM
Looks like you have every thing covered.....yes you can install the PT post in the concrete but make sure the concrete is above the ground and will not hold water around the post....use post caps and rafters straps to the beam for uplift just to make sure the wind some day does blow strong....If the roof is not at least a 3 and 12 pitch you should use a ice shield under the shingle to make sure that is is water tight......Good Luck...