This step by step diy woodworking project is about a 12×18 pavilion lean to roof plans. This is PART 2 of the rectangular pavilion project, where I show you how to build the slanted roof. This roof has a 4:12 pitch, but you can adjust it super easily. You can play with the roof pitch to suit your needs. Take a look over the rest of my woodworking plans, if you want to get more building inspiration.
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
12×18 Pavilion Lean to Roof Plans
Building a 12×18 lean to pavilion
Cut and Shopping Lists
Tools
Hammer, Tape measure, Framing square, Level
Miter saw, Drill machinery, Screwdriver, Sander
Time
One day
Related
- PART 1: 12×18 Gable Pavilion Plans
- PART 2: 12×18 Pavilion Lean to Roof Plans
How to build a 12×18 lean to pavilion roof
Rafters—12×24-lean-to
Use 2×6 lumber for the rafters. Mark the cut lines to the rafters and then get the job done with a circular saw. Smooth the edges with sandpaper. Make the birdsmouth notches into the rafters, so you can fit them into place tightly.
Fitting-the-rafters
Fit the rafters to the top of the pavilion, using the information from the diagram. It is important to space the rafters properly (every 24″ on center), otherwise you won’t be able to attach the roofing sheets. Use hurricane rafters ties and 1 1/2″ structural screws, to lock the rafters to the support beams.
Roof-sheets
Use 3/4″ plywood for the roof of the pavilion. Cut the sheets at the right dimensions and then lay them to the top of the pavilion. Leave no gaps between the sheets and then insert 1 5/8″ screws, every 8″ along the rafters, so you can secure them into place tightly.
Front-and-back-roof-trims
Fit 1×8 trims to the front and back of the pavilion. Align the edges with attention and insert 2″ nails to lock them into place tightly.
Side-roof-trims
Fit the 1×8 trims to the sides of the pavilion. Make the angle cuts to the trims before locking them into place with 2″ nails.
Installing-the-roofing
Cover the roof with tar paper and then install the asphalt shingles. Make sure you also install the appropriate drip edges, so you can seal the roof. Read the manufacturer’s instructions for a tight fit.
12×18 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 100-200 grit sandpaper and remove the residues with a damp cloth. Apply a few coats of stain or paint to enhance the look of the pavilion.
12×18 Lean to Pavilion Plans
Don’t forget to take a look over PART 1 of the project, so you learn how to build the frame of the 12×18 pavilion. This free standing pavilion is sturdy and it features a very elegant design that puts and emphasis on cost efficiency and durability. With several modifications to the roof, you can alter the design and attach it to an already existing building.
What I like the most about this pavilion is that you can easily modify the height of the post, so it suits your needs and fits your space. See all my woodworking plans, sorted by category.
This woodworking project was about 12×18 backyard pavilion roof 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.
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