12×16 Pavilion Roof Plans

Ovidiu 20 GapDice RANDOM PLAN

This step by step diy woodworking project is about a 12×16 outdoor pavilion roof plans. This is PART 2 of the rectangular pavilion project, where I show you how to build the roof and how to attach the decorative trims. The roof has a 45 degree slope, so you can easily drain the water or snow. 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




12×16 Pavilion Roof Plans




  • E – 24 pieces of 2×6 lumber – 120″ long RAFTERS
  • – 8 pieces of 3/4″ plywood – 48″x96″ long, 4 pieces – 24″x48″ long, 2 pieces – 21 1/4″x24″ long, 4 pieces – 21 1/4″x96″ long ROOF
  • G – 380 sq ft of tar paper, 380 sq ft of asphalt shingles ROOFING
  • H – 2 pieces of 1×4 lumber – 216″ long TRIMS
  • I – 4 pieces of 1×6 lumber – 46 3/4″ long TRIMS

 One day



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How to build a 12×16 pavilion roof



The first step of the project is to build the rafters for the 12×16 pavilion from 2×6 lumber. Mark the cut lines on the beams and then get the job done with a circular saw. Make sure you cut out the birds-mouth for a professional result.



Fit the rafters to the top of the pavilion, using the information from the diagram. It is important to space the rafters properly, otherwise you won’t be able to attach the roofing sheets. Use rafters ties to lock the beams into place.

Fitting the side roof trims

Fitting the side roof trims

Fit the 1×6 slats to both sides of the roof, for a nice decorative touch. Adjust the width of the trims to 4″ using a saw and secure them to the end of the rafters with 2″ brad nails.

Fitting the roof sheets

Fitting the 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.

Gable end trims

Gable end trims

Build the gable end trims from 1×6 or 2×6 lumber. Make 45 degree cuts to one end of the trims, using the information from the diagram.

Fitting the gable end trims

Fitting the gable end trims

Drill pocket holes at both ends of the beams and then secure them into place with 1 1/4″ screws (1×6) or 2 1/2″ screws (2×6).

Fitting the roofing

Fitting 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 shed roof. Read the manufacturer’s instructions for a tight fit.

12x16 Pavilion Plans - Front view

12×16 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.

12x16 Pavilion Plans

12×16 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 12×16 pavilion. This pavilion is sturdy and it features a very elegant design that puts and emphasis on cost efficiency and durability.



This woodworking project was about 12×16 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.




Kids                Garden                Animals                 Planter

Car                Indoor               Furniture               Shed


  1. Jeff at - Reply

    How would you cut the rafters for a 6/12 pitch?

  2. Ryan at - Reply

    Your plans mention using rafter ties to lock the rafters in place. Am I correct in assuming you are referring to something like a Simpson Strontie rafter ties rather than joists?

    • Ovidiu at - Reply

      Yes, you have a link in the materials list to what I’m referring.

  3. Dr. Hank alviani at - Reply

    Is 6×6 construction necessary? Will this pavillion work with 4×4 posts and crossbeams? Can I use metal roofing instead of wood, tar paper and shingles? Wouldn’t that make the roof lighter and a 4×4 structure more feasible?

    • Ovidiu at - Reply

      Don’t recommend that.

  4. Dr. Hank alviani at - Reply

    Don’t recommend 4×4 or metal roof?

    • Ovidiu at - Reply

      4x4s. The metal roof is not an issue.

  5. Taylor Simonis at - Reply

    Do you have premium plans for this 12×16 Pavilion?

    • Ovidiu at - Reply

      I have for a 12×16 with a gable roof, but different roof pitch.


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