This step by step diy woodworking project is about a 12×30 outdoor lean to pavilion plans. This pavilion is built on a sturdy 6×6 with 10 ft posts and it features a design made to keep the costs down. The roof for this pavilion has a pitch of 2:12. Make sure you take a look over the local building codes, so you comply with the regulations. Take a look over the rest of our woodworking plans, if you want to get more building inspiration. Check out the Shop, as well, for full list of Premium Plans.
When buying the lumber, you should select the planks with great care, making sure they are straight and without any visible flaws (cracks, knots, twists, decay). Investing in cedar or other weather resistant lumber is a good idea, as it will pay off on the long run. Use a spirit level to plumb and align the components, before inserting the galvanized screws, otherwise the project won’t have a symmetrical look. If you have all the materials and tools required for the project, you could get the job done in about a day.
Projects made from these plans
12×30 Lean to Pavilion Plans – PDF Download
Cut and Shopping Lists
Hammer, Tape measure, Framing square, Level
Miter saw, Drill machinery, Screwdriver, Sander
- PART 1: 12×30 Pavilion Plans
- PART 2: 12×30 Lean to Pavilion Roof Plans
How to build a 12×30 pavilion
First, layout the posts for the 12×30 lean to pavilion. Use batter boards and string to determine the location of the posts. Apply the 3-4-5 rule to every corner of the pavilion, so you make sure they are right angled. Make sure the diagonals are equal.
Determining the location for the pavilion is essential, as you have to comply with the local building codes. Make sure the surface is level and remove the vegetation layer.
Dig 3 ft holes into the ground, making sure they have about 14″ in diameter. Fit the tubes then the posts into the ground and plumb them with a spirit level. Fit the anchors and align them, then let the concrete dry out for several days. Read the local codes for more details on how to secure the posts.
Use lag screws to secure the posts to the anchors. Before pouring the concrete you need to make sure the top of the posts are horizontal one to another. Use a laser to mark the level to the top of the posts and use a circular saw, if you need to make cuts.
Building the frame of the pavilion
Next, we will be building the top plates for the large lean to pavilion. Therefore, this pavilion requires at least 6x6s. Read the local codes and use 6×8 lumber, if required. As you can see in the diagram, you need to make 2 3/4″ notches to the beams, so you can lock them together tightly.
Use a circular saw to make parallel cuts inside the marked areas and remove the excess with a chisel. Smooth the recesses with sandpaper.
Fit the top rails to the top of the pavilion posts. Drill pilot holes through the plates and insert 8″ screws to lock them to the posts. Use 2 screws for each joint. Make sure the corners are square and plumb the posts vertically.
Next, fit the cross plates to the pavilion. Align the edges flush and drill pilot holes. Insert the 8″ screws to lock the cross plates into place tightly.
Build the braces for the front and back of the pavilion from 6×6 lumber. Use a miter saw to make 45 degree cuts to both ends of the braces. Fit the braces to the posts, after you plumb them vertically. Drill pilot holes and insert 3 1/2″ / 5 1/2″ screws to secure the braces into place tightly. Insert 2 screws for each joint.
Framing the roof structure
Fit the 6×6 supports to the top of pavilion. Plumb the supports with a spirit level. Use L tie connectors to secure the each support to the frame of the pavilion. Insert 1 1/2″ structural screws to lock the beams together tightly, using the connector.
Fit the 6×6 beam to the top of the supports. Use post to beam connectors with structural screws to lock everything together tightly. Insert 2 1/2″ structural screws through the connector. Make sure the corners are square and align the edges flush.
Use 6×6 lumber for the braces. Make angle cuts at both ends of the braces. Secure the braces into place with 5 1/2″ screws. Drill pilot holes before inserting the screws. Use at least 2 screws for each joint. These braces will really reinforce the structure and add extra-support to the ridge beams.
Check out PART 2 of the project to learn how to build the lean to roof. You can see in this image the overall dimensions for the slanted pavilion. This is a large pavilion, ideal for a table and a few chairs. With several adjustments, you can even attach this pavilion to an already existing building. It is really cool, but also relatively affordable and easy to build.
You can even use this pavilion as a carport.
Fill the holes with wood putty and let them dry out for a few hours. Smooth the surface with 100-220 grit sandpaper and remove the residues with a damp cloth.
Top Tip: Apply a few coats of paint or stain to the components, to enhance the look of the project. Check out the Shop, as well, for full list of Premium Plans.
This woodworking project was about 12×30 lean to pavilion plans free. If you want to see more outdoor plans, check out the rest of our step by step projects and follow the instructions to obtain a professional result.