How To Build A Tin Roof On A Deck

Installing a porch roof over an existing deck is usually not recommended unless the deck was originally designed to support a future porch.

How to build a tin roof on a deck. It provides shade and keeps your family dry during wet weather. Frame up a box the size of the outer dimensions of your deck using 2 by 4 inch lumber. It adds to the aesthetic appeal of the space. Building on an existing deck.

How to build a tin roof over a deck. Adding a roof over a deck. Check local building code to see if you can attach a patio roof directly to your deck. How to build a roof over a deck.

Porch decks require 25 additional psf for roof loads for a total of 80 psf. Build the frame of the roof on the ground. Then stretch a string between them. Measure the porch to find the best length and width for a tin porch roof.

Building a roof over a deck turns this area into the best possible outdoor living space. Mark the line 2 inches in from. If the span under your deck is 12 ft for example the purlin at the outer end of the deck should be 3 in. Tie your existing deck posts into the roof by extending your corner posts with the 4 by 4 lumber.

First mark all the purlin locations on the deck joists. For example assume the porch measures 12 feet wide and 8 feet. Typical decks are designed to support 55 psf lbs per square foot. Let the epoxy set leaving it overnight will assure that it is rock solid and then add the anchor bolt anchor washer and nut and tighten.

Install the purlin along the house and the outer purlin. Mark the porch with a line parallel to the edge farthest from the house.