DIY Arched Pergola Plans: 12x12 Curved Roof White Wood Blueprint PDF

DIY arched pergola plans for a 12' x 12' freestanding wood pergola with an arch on every side and a curved slat roof. Instant PDF download with full arch templates.

- Product: DIY arched pergola plans, 12' x 12' freestanding wood pergola with four arched sides and a curved roof
- Format: Digital PDF download
- Pages: 23
- Paper Size: US Letter
- Units: Imperial (feet and inches); main cut lengths also in mm
- Dimensions: 12' x 12' post footprint, 15' 11-1/2" x 13' 9" roof, 7' 7-1/2" clear under the arches at center, 10' 0" to the top of the roof
- Arches: Four 2x12 arched headers, one between the posts on each side
- Roof: Seven 2x12 arched rafters at 27-1/4" on center with 32 2x4 slats laid flat along the curve; the roof is 5-3/4" higher in the middle than at the ends
- Structure: Four 6x6 posts set in concrete, two glued and screwed 2-ply 2x12 beams with rounded ends, strap ties, no knee braces
- Style: Arched pavilion-style pergola with a curved roof
- Materials: Pressure-treated lumber; cedar optional for the beams, headers, rafters and slats
- Finish Shown: White painted frame and cedar-tone stained slats
- Skill Level: Intermediate
- Build Time: About 4 working days plus concrete curing; two people minimum, three for the beams
- Includes: Shopping list, master cut list, cut diagrams, arched rafter and header templates with ordinate tables, beam end template, front and side elevations, framing plan, 8 illustrated steps, 3D renderings
- Best For: DIY builders who want a white garden or patio pergola with arches and a curved roof
- Delivery: Instant PDF download after purchase, no physical item shipped

## What's Included in These Arched Pergola Plans

This 12x12 pergola plan gives you every curve as a table of measurements, so you do not need to draw arches freehand. You mark the heights from the table, bend a thin batten through the marks, trace the curve and cut it with a jigsaw. Cut one rafter and one header first, check them, then use them as patterns for the rest.

- Overview and specifications page with all key heights and sizes
- Tools list, lumber size chart and a guide to drawing the arches
- Shopping list for lumber, ties, framing angles, screws, concrete, paint and stain
- Master cut list and cut diagrams for every board
- Full arched rafter template with an ordinate table
- Arched header and rounded beam end templates
- Dimensioned front elevation, side elevation and framing plan
- 8 illustrated build steps with tips and checks
- Finishing, care and common questions page
- 3D renderings of the finished pergola from six views

## Curved Roof Pergola Blueprint Format and Units

The pergola blueprint is a 23-page PDF on US Letter paper. All dimensions are in feet and inches to 1/16" precision, and the main cut lengths are also given in millimeters. Drawings are not to scale, so you always build from the written dimensions and the ordinate tables.

## Who This White Wood Pergola Plan Is For

These freestanding pergola plans suit DIY builders with some framing experience who are comfortable cutting curves with a jigsaw. You need a level area of about 22' x 20'. The arched rafter ends face the front and back, so put the front toward the house or the view.

## How to Use the Arched Pergola Plans

1. Buy the plan and download the PDF.
2. Print it or open it on a tablet or computer.
3. Check local zoning, permit and height rules for your area.
4. Buy the lumber, hardware, paint and stain from the shopping list.
5. Follow the 8 steps, cutting one test rafter and header from the templates first.

## Digital Product Note

This is a digital PDF plan. No physical item is shipped, and no lumber or hardware is included. The file is ready to download right after purchase. Spring is the busiest building season, so fall and winter are a good time to plan a garden pergola and gather materials.

## Terms of Use

This plan is for your personal use. You may build as many pergolas as you like for your own property. You may not resell, share or publish this PDF or its drawings.

## Frequently Asked Questions

### How do I download the PDF after purchase?

After checkout you get a download link on the order confirmation page and by email. Click the link to download the arched pergola plans PDF.

### How do you build a pergola arch?

To build a pergola arch, mark the heights from an ordinate table on a 2x12, bend a thin batten through the marks and cut the traced curve with a jigsaw. This plan gives a full table for every arched rafter and header.

### Is it cheaper to build or buy a pergola?

Building a pergola from plans lets you buy lumber locally at your own prices instead of paying for a pre-built kit. The shopping list in this PDF lets you price the full build before you start.

### Can I use a 4x4 post for a 12x12 pergola?

This 12x12 pergola plan uses 6x6 ground-contact posts set 36" deep in concrete, because the frame gets most of its sideways stiffness from the posts.

### Do the arches weaken the pergola headers?

No, the arches do not weaken the headers, because the beams sit directly on the posts and the headers do not carry the roof. The headers tie the frame together and frame the arches.

## More Building Plans from KRMPLANS

Browse the KRMPLANS shop for more pergola, carport, cabin and chicken coop plans. If you have a question about this plan before or after you buy, send us a message and we will be happy to help.