20×30 Lean to Pavilion Roof Plans

Ovidiu 0 GapDice RANDOM PLAN

This step by step diy woodworking project is about a 20×30 wooden pavilion roof plans. This is PART 2 of the large pavilion, where I show you how to build the 3:12 pitched roof. This pavilion is the perfect addition to your property, especially if you want to build it next to the property line. Take a look over the rest of my woodworking plans, if you want to get more building inspiration. Premium Plans for this project available Here. 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

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How to Build a Gable Roof for a Pavilion

Building-a-20x30-lean-to-pavilion

Building-a-20×30-lean-to-pavilion

 

Materials

  • F,G – 18 pieces of 2×8 lumber – 136 1/4″ long, 18 pieces – 135 1/4″ long RAFTERS
  • H – 15 pieces of 3/4″ plywood – 48″x96″ long, 6 pieces – 12″x48″ long, 5 pieces – 48″x84″ long, 3 pieces – 31 1/2″x96″ long, 1 piece – 31 1/2″x84″ long, 1 piece – 12″x31 1/2″ long ROOF SHEETS
  • I – 4 pieces of 1×10 lumber – 132″ long, 2 pieces – 120″ long, 2 pieces – 144″ long, 2 pieces – 129″ long TRIMS
  • J – 750 sq ft of tar paper, 750 sq ft of asphalt shingles ROOFING

Tools

 Hammer, Tape measure, Framing square, Level

 Miter saw, Drill machinery, Screwdriver, Sander

 Safety Gloves, Safety Glasses

Time

One week

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How to build a large pavilion lean to roof

Rafters-for-large-lean-to-pavilion

Rafters-for-large-lean-to-pavilion

First of all, we need to build the rafters for the lean to roof. Use 2×8 lumber for the rafters. Use a miter saw to make the cuts to the boards. Smooth the edges with sandpaper. Make the notches to the rafters, as shown in the plans. Mark the lines before doing the cuts. See the diagram for more details on how to make the notches to the top of the rafters. 

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 (every 24″ on center), otherwise you won’t be able to attach the roofing sheets. Use rafters ties to lock the rafters to the beams, at both ends. Use 1 1/2″ structural screws for the rafter ties.

Roof-sheets---20x30-pavilion

Roof-sheets—20×30-pavilion

Use 3/4″ plywood for the roof decking, as well. 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.

Fitting-the-side-roof-trims

Fitting-the-side-roof-trims

 

Roof trims

Roof trims

Fit 1×10 trims to the sides of the pavilion. Align the edges with attention and insert 2″ nails to lock them into place tightly. Fit the 1×8 trims to the front and back of the pavilion. Lock them into place with 2″ nails.

Fitting-the-roofing

Fitting-the-roofing

Cover the roof with tar paper and then install the asphalt shingles. Start installing the shingles from the bottom of the roof up to the top. Make sure you also install the appropriate drip edges around all edges of the roof, so you can seal the shed roof. Read the manufacturer’s instructions for a tight fit.

20x30-Lean-to-Pavilion-Plans---overall-dimensions

20×30-Lean-to-Pavilion-Plans—overall-dimensions

Last but not least, you need to take care of the finishing touches. Therefore, fill the holes with wood putty and then smooth the surface with 120-220 grit sandpaper. Apply a few coats of paint / stain to enhance the look of the pavilion and to protect them from the elements.

20x30 Lean to Pavilion Plans - side view

20×30 Lean to Pavilion Plans – side view

Don’t forget to take a look over PART 1 of the project, so you learn how to build the frame of the large pavilion. This pavilion is sturdy and it features a very elegant design that puts and emphasis on cost efficiency and durability. You can add railings to the exterior of the pavilion. See a list with all my plans, sorted by category, HERE.

 

 

This woodworking project was about 20×30 backyard lean to 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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