This step by step diy project is about 12×16 pavilion with lean to roof plans. This pavilion has a ground area of 12 ft x 16 ft, but the roof is wider so it will protect more space. This pavilion features a post frame structure made from 6x6s. The roof has a lean to slope of 3:12. Take a look over the rest of my woodworking plans, if you want to get more building inspiration. Premium Plans for this project available in the SHOP.
Remember that all my plans come with 3D diagrams, instructions and a complete cut / shopping list. In addition, as always, my free plans are PDF download and print friendly, so you can get the plans with you in the shop. Make sure you read the local building codes before starting the project, so you get aware of the legal requirements and make the necessarily adjustments.
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. See all my Premium Plans HERE.
Projects made from these plans
12×16 Pavilion with Lean to Roof Plans
Cut + Shopping List
- A – 6 pieces of 6×6 lumber – 8′ long POSTS
- B – 3 pieces of 6×6 lumber – 12′ long, 2 pieces – 16′ long SUPPORT BEAMS
- C – 1 piece of 6×6 lumber – 18′ long, 3 pieces – 30 1/2″ long, 2 pieces – 92 1/2″ long TOP FRAME
- D – 12 piece of 6×6 lumber – 36″ long BRACES
- 9 pieces of 6×6 lumber – 8 ft
- 6 pieces of 6×6 lumber – 12 ft
- 2 pieces of 6×6 lumber – 16 ft
- 1 piece of 6×6 lumber – 18 ft
- 8″ screws
- 5 1/2″ screws
- 6 pieces of 6×6 post anchor
- post to beam connectors
- post anchor
- concrete tube forms
- 2″ finish nails
- 1 1/2″ structural screws for connectors
- 2 1/2″ structural screws for connectors
- wood glue, stain/paint
- wood filler
- PART 1: 12×16 Lean to Pavilion Plans
- PART 2: 12×16 Lean to Roof Plans
It’s that easy to build a lean to pavilion!
12×16 Lean to Pavilion Plans – Laying out
The first step of the project is to lay out the pavilion posts. Build batter boards and use string to layout everything in a professional manner. Apply the 3-4-5 rule to every corner and make sure the diagonal are equal, otherwise the corners won’t be square. Select the location for the pavilion with attention, making sure it complies with the local codes. Get a building permit if needed. Level the surface with attention, removing the vegetation layer.
You need to set the posts in concrete (about 3-6′ deep – make sure you read the local building codes for accurate information) or use anchors. Use a post hole digger to make the holes. Pour a 2″ layer of concrete on the bottom of the holes so you level them. Fit the tube forms and then the 6×6 posts / fit the anchors. Use a spirit level to make sure the posts are plumb and then secure them temporarily into place with braces. Fill the tubes with concrete and let it dry out as shown on the bags. Make sure the top of the posts are level.
Building the frame of the pavilion
Use 6×6 lumber for the plates that go on top of the posts. Use a circular saw to make the notches, so you can join them together. Make parallel cuts inside the marked areas and then remove the excess with a hammer and a chisel.
Fit the 6×6 plates to the sides of the garden pavilion. Align the edges with attention and make sure the corners are square. Drill pilot holes through the plates and insert 5 1/2″ screws into the top of the posts.
Fit the rest of the plates to the top of the pavilion. Check if the corners are square and align the edges flush. Drill pilot holes and insert 8″ screws.
Fitting the ridge beams
Next, you need to build the top side frame, so you can frame the lean to roof. You can adjust the size of the supports to determine the slope of the roof. Use L-brackets to lock the supports to the top plate. Use post to beam connectors to secure the posts to the ridge beam. Make sure the corners are square.
Make angle cuts to to both ends of the 6×6 braces.
Fit the braces to the pavilion, as shown in the diagram. Drill pilot holes and insert 5 1/2″ screws to lock them into place.
Use 6×6 lumber for the diagonal braces. Fit the braces to the frame of the pavilion, as shown in the diagram. Plumb the posts with a spirit level and make sure the corners are square. Fit the braces into place, drill pilot holes and insert 5 1/2″ screws to lock them into place tightly.
I recommend you to take a look over PART 2 of the project, where I show you how to build the lean to roof for the outdoor pavilion.
This garden pavilion with a lean to roof has a footprint of 12×16. The roof structure is strong enough for winds and snow, but I recommend you to read the local codes and make modifications, if necessary. You should also take a look over my 10×16 gazebo with lean to roof, as it makes for a more stylish alternative to this plan. Premium Plans for this project available in the SHOP.
This woodworking project was about 12×16 pavilion with lean to plans. 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.