DIY Butterfly Roof Greenhouse Plans: 10x10 Modern, French Doors PDF

DIY butterfly roof greenhouse plans in a 41-page PDF for a 10x10 modern backyard greenhouse. Build a V-shaped roof with a hidden valley gutter, a 50 gal rain barrel inside and French doors.

- Product: Monarch 10x10 butterfly roof greenhouse plans with French doors
- Format: Digital PDF download
- Pages: 41
- Paper Size: US Letter
- Units: Imperial (feet and inches), metric reference values in the cut list
- Dimensions: 10' x 10' base, 103-3/4" tall side walls, valley beams at 90-1/4"
- Style: Modern butterfly roof (V roof) greenhouse in black and cedar
- Skill Level: Intermediate, 2 people, about 4-5 weekends
- Includes: Shopping list, master cut list, cut diagrams, polycarbonate cutting plan, rafter, rake board, end-wall, band, door and panel templates, wall framing layouts, 18 illustrated steps, 6 renderings
- Best For: Home gardeners and DIY builders who want a modern wooden greenhouse that collects rainwater
- Delivery: Instant PDF download after purchase, no physical item shipped

## What's Included in These Butterfly Roof Greenhouse Plans

These 10x10 greenhouse plans take you from the gravel pad to the benches and rain barrel. Each step page shows new parts in orange, labels every part with a Part ID and ends with its own cut list.

- Overview and specifications with front, side and floor plan drawings
- Tools, lumber sizes, fasteners and polycarbonate basics
- Shopping list for lumber, hardware, glazing and the gutter parts
- Master cut list with 354 lumber parts and 25 polycarbonate panels
- Cut diagrams for every board and a polycarbonate cutting plan for 13 sheets
- Templates for the rafters, rake boards, end walls, cedar bands, doors and panels
- Wall framing layouts for the side and end walls
- 18 illustrated build steps, plus finishing, care and troubleshooting notes

## V Roof Design With Hidden Valley Gutter and Rain Barrel

The butterfly roof has two 3/12 (14 degree) wings. Twelve 2x6 rafters at 24" on center fall from the tall side walls to two doubled 2x8 valley beams in the middle.

- Rainwater: a 6" gutter hidden between the valley beams falls 1/2" to an outlet near the back
- Rain barrel: a downspout feeds a 50 gal barrel inside, used for watering and as thermal mass
- Roof: 11' 5-1/2" wide with 8" eaves at both tall walls
- Glazing: 8 mm twin-wall polycarbonate with black aluminum profiles
- Headroom: 7' 1" under the valley beams

## French Doors, Knee Walls and Potting Benches

- French doors: two full-height glazed cedar leaves with an astragal and flush bolts in a 44" x 76" opening
- Walls: 2x4 pressure-treated framing stained black, with 24" knee walls of vertical cedar board-and-batten
- Trim: cedar V-bands over the center of both end walls
- Ventilation: two top-hinged vents with automatic openers high in the tall walls, plus eave and valley screens
- Inside: two potting benches 94" long and 22" deep with lower shelves, a 61" aisle and a pea-gravel floor

## File Format, Paper Size and Units

The plan is a 41-page PDF sized for US Letter paper. All dimensions are imperial (feet and inches) and measured to 1/16". The cut list also shows metric values for reference.

## Who These 10x10 Greenhouse Plans Are For

The build is rated intermediate and needs 2 people for the walls, valley beams and roof. Plan on about 4-5 weekends from site prep to the finished benches.

## How to Use This Greenhouse Plans PDF

1. Buy the plan and download the PDF.
2. Print it on US Letter paper or open it on a tablet or computer.
3. Check local codes, setbacks and HOA rules, then pick a level, sunny site with one tall side wall facing south.
4. Buy materials from the shopping list and cut parts from the cut diagrams.
5. Follow the 18 illustrated steps from the gravel pad to the benches and rain barrel.

## Digital Product Note

This is a digital product. No physical item is shipped. The PDF is available to download right after purchase.

## Terms of Use

The plan is for personal use. You may build as many greenhouses as you like for yourself. Sharing, reselling or redistributing the PDF file is not allowed.

## Frequently Asked Questions

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

You can download the PDF right after checkout from the download link on the order confirmation page and in your confirmation email. Save it to your device so you can print or open it any time.

### What is the point of a butterfly roof on a greenhouse?

A butterfly roof sends rain from both wings into one valley, so this greenhouse can collect water in a 50 gal rain barrel inside. The tall side walls also let hot air rise and leave through the automatic vents.

### What are the disadvantages of a butterfly roof?

A butterfly roof needs its valley gutter kept clear, so the plan tells you to clear leaves each fall and clear snow from the valley after each storm. The plan also covers the panel overlaps and tapes that keep the valley dry.

### What is a butterfly roof greenhouse called?

A butterfly roof greenhouse is also called a V roof greenhouse, because the two roof wings slope down to a valley in the middle. This plan is a 10x10 V roof design with the gutter hidden between the valley beams.

### How much does it cost to build a 10x10 greenhouse?

The cost to build this 10x10 greenhouse depends on local lumber and polycarbonate prices. The plan includes a full shopping list with quantities, so you can price every item before you start.

## More Building Plans from KRMPLANS

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