Home 12x24 12×24 Wooden Lean to Pavilion Plans

12×24 Wooden Lean to Pavilion Plans

by Ovidiu


This step by step diy woodworking project is about a 12×24 garden lean to pavilion plans. I have designed this pavilion with a slanted roof to help you build a covered outdoor structure that is perfect for parties and late night dinners in the nature. The roof for this pavilion has a pitch of 4:12. 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




12×24 Lean to Pavilion Plans – PDF Download




Cut and Shopping Lists


 Hammer, Tape measure, Framing square, Level

 Miter saw, Drill machinery, Screwdriver, Sander

 Safety Gloves, Safety Glasses


One week




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How to build a 12×24 slanted pavilion



First, layout the posts for the 12×24 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.

Setting the posts in concrete

Setting the posts in concrete

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 6x8s. Read the local codes to make sure the beam size is adequate. As you can see in the diagram, you need to make 3 5/8″ 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 (set the blade cutting depth at 3 5/8″). Use a hammer to remove the excess. 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.

Notice the 24″ overhangs to the beams that go to the front of the pavilion. Align everything with attention, before securing the beams into place.



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 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 2 1/2″ structural screws to lock the beams together tightly, using the connector. 



Fit the 6×8 beams 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. 


Finishing touches



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.

12x24 Lean to Pavilion Plans

12×24 Lean to Pavilion Plans


12x24 Lean to Pavilion Plans - front view

12×24 Lean to Pavilion Plans – front view

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. If you want to get the full plan with complete cut list, shopping list and cut layout diagram, just press the GET PDF PLANS bellow.



This woodworking project was about 12×24 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.







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