8x8 Lean to Greenhouse Roof Plans

This step by step diy project is about 8×8 lean to greenhouse trims plans. This is PART 2 of the small lean to greenhouse project, where I show you how to build the door, the vents and how to attach the trims to the exterior of the structure. 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. See all my Premium Plans HERE.

Projects made from these plans

8×8 Lean to Greenhouse Roof Plans

Building a greenhouse

Cut & Shopping Lists

A – 5 pieces of 2×4 lumber – 106 1/2″ long RAFTERS
B – 10 pieces of 1×2 lumber – 96″ long, 18 pieces – 72″ long, 7 pieces – 35″ long, 2 pieces – 24 1/2″ long, 2 pieces – 10 1/2″ long, 4 pieces – 22 1/2″ long, 5 pieces – 102 1/4″ long TRIMS
C – 2 pieces of 2×2 lumber – 22 1/2″ long, 2 pieces – 19 1/2″ long, 2 pieces of 1×2 lumber – 22 1/2″ long, 2 pieces – 19 1/2″ long 2xVENT
D – 2 pieces of 2×2 lumber – 36″ long, 2 pieces – 69″ long, 1 piece – 33″ long, 2 pieces of 1×2 lumber – 36″ long, 2 pieces – 69″ long, 1 piece – 33″ long DOOR

5 pieces of 2×4 lumber – 10′
6 pieces of 2×2 lumber – 8′
21 pieces of 1×2 lumber – 8′
18 pieces of 1×2 lumber – 6′
5 pieces of 1×2 lumber – 10′
hinges, latch
vent opener
greenhouse plastic
2 1/2″ screws, 3 1/2″ screws, 1 5/8″ screws
wood filler , wood glue, stain/paint

Time

Hammer, Tape measure, Framing square, Level

Miter saw, Drill machinery, Screwdriver, Sander

Safety Gloves, Safety Glasses

Time

One day

PART 1: 8×8 Lean to greenhouse plans
PART 2: 8×8 Lean to greenhouse trims plans

How to build lean to greenhouse trims

Building-the-rafters—8×8-greenhouse

The first step of the project is to build the rafters for the lean to greenhouse. Mark the cut lines on the beams and then get the job done with a circular saw.

Fitting-the-rafters

Fit the rafters to the top of the lean to greenhouse. Place the rafters equally spaced and then lock them into place with screws. Drill pilot holes through the rafters before inserting the screws, to prevent the wood from splitting.

Back wall trims

Fit the 1×2 trims to the front and back of the greenhouse, so you can secure the greenhouse plastic into place tightly. Insert 1 5/8″ screws to secure the trims into place every 8″, along the framing.

Short wall trims

Fit the 1×2 trims to the short side of the greenhouse, using the same techniques described above.

Tall side wall trims

Fit the 1×2 trims to the opposite side of the greenhouse, after stretching the plastic. Use 1 5/8″ screws to lock the trims into place tightly.

Roof trims

Fit the 1×2 trims to the top of the greenhouse. Align the edges flush and insert 1 5/8″ screws, so you lock them into place tightly.

Building-the-greenhouse-door

Frame the door for the greenhouse from 2×2 lumber. Cut the components at the right dimensions and then lay them on a level surface. Drill pilot holes through the components and insert 2 1/2″ screws to lock them together tightly. Make sure the corners are square and align the edges flush.

Fit the greenhouse plastic to the frame and then lock it into place with 1×2 trims. Use 1 5/8″ screws to secure the trims into place tightly.

Fitting the door into place

Fit the door to the opening and then secure it to the frame with hinges. Install a latch so you can lock the door into place tightly.

Building the vent windows

Build the vent frames from 2×2 lumber. Drill pocket holes at both ends of the 22 1/2″ plywood components and insert 2 1/2″ screws to lock the frames together tightly. Make sure the corners are square and align the edges flush. Fit the translucent panels to the vents. Alternatively you can use 1×2 trims over the vents, so you can lock the components together tightly.

Fitting the vent windows

Fit the vents to the greenhouse. Use hinges to secure the vents to the frame tightly. Moreover, you could install automatic vent openers, so you control the temperature inside the greenhouse.

Small attached greenhouse plans

This lean to greenhouse is ideal if you want to build a shelter for your flowers during the cold days. You can easily attach this greenhouse to an existing building. Take a look over PART 1 of the greenhouse project, where I show you how to build the frame of the lean to greenhouse.

This woodworking project was about 8×8 lean to greenhouse trims 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.