12×16 Pavilion Roof Plans

Ovidiu 18 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

Building a 12x16 pavilion

Building a 12×16 pavilion


  • 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

Building the rafters

Building the rafters

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.

Fitting the rafters

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, 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.




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  1. Eric Bertrand-Loesch at - Reply

    On the 12×16 pavilion plans and you seem to have a high roof with a large pitch. Your 12 x 14 shelter did not have a large pitch roof but I need a 12 x 16 is there anyway that I can use a roof more like the 12 x 14 on the 12 x 16?? Thanks for getting back to me in advance. Eric

    • Ovidiu at - Reply

      It is possible, considering both pavilions have the same width. Use that trusses to this design.

  2. Rodrick Shiver at - Reply


    Is it possible to obtain printer friendly versions of the plans?

  3. Kenny Charles at - Reply

    On your instruction it states to use a 3/4 plywood for the roof. Is it possible to use a 5/8 instead? The reason that I am asking is that I wanted a beaded board look on the inside of the pavilion and lumber stores don’t have that look in a 3/4

    • Ovidiu at - Reply

      Place the rafters every 16″ on center.

  4. Kenny Charles at - Reply

    I have already place the rafters according to your plan of 21″ to 22″ so what should I do now about the thickness of the plywood?

    • Ovidiu at - Reply

      I would go with the 3/4″, but if you like the look of the 5/8″, you could give it a try. I think it will work.

  5. Kenny Charles at - Reply

    ok. Thank you. Why do you recommend the 3/4? I am also putting on a metal roof.

    • Ovidiu at - Reply

      Because it’s thicker and it will support better the weight.

  6. Shelly Johnson at - Reply

    How would you cut the rafters to change the roof pitch to a 9:12? I love the 6X6 framing.


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