Greenhouses serve an important purpose as shelter for plants and increasing the temperature inside. You can plant seeds several months earlier than the in-ground planting method and get a jump-start on an early crop. Planting directly in the ground can damage young seedlings when an unexpected cold front appears. A greenhouse door provides entry, exit and ventilation in a greenhouse. Plan the size so that it is wide enough to enter and exit while carrying flats of plants or pushing a garden cart or wheelbarrow inside.
- Skill level:
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Things you need
- 2-10 foot long 4-by-4 posts
- Post hole diggers
- Quick setting concrete mix
- 1- 3 foot long 4-by-4 post
- 3- 8 foot long 2-by-4 boards
- Circular saw
- Wood screws
- Two hinges
- One screen door latch with eye
- Plastic sheathing
- Staple gun
Use post hole diggers to dig two holes 2 feet deep and 6 inches round with centres spaced at 3 feet apart. These measurements will create a door opening 8 feet tall. Mix concrete mix according to package directions in a wheelbarrow. Mix thoroughly with a shovel and shovel about 3 inches into each post hole.
Stand one pole in the post hole and fill with concrete mix. Set the second pole in the same manner. Let concrete mix set about 10 minutes to provide stability.
Screw the 3-foot long 4-by-4 post on top of the two vertical posts to form the doorframe. Use four wood screws at each joint.
Measure one 8-foot board 3 feet from each end and cut. Lay the two 8-foot boards on the ground 3 feet apart. Screw a 3-foot board at the top and bottom to each side.
Attach one hinge with a drill about 4 inches from the top of the door and the other about 4 inches from the bottom on the same side. Place door in the doorframe and attach other end of each hinge to the doorframe.
Attach a screen door latch with a drill to the side of the door opposite the hinges in the centre of the door. Attach the screen door eye level with the latch on the doorframe by screwing it in with pliers. Make sure the eye has its opening facing upwards for the latch to secure.
Cut plastic sheathing with scissors to fit the door. In this example, it is 8-feet tall and 3-feet wide. Staple the sheathing with a staple gun onto the door starting at the top centre and working to one side then the other. Continue stapling all around the door.
Tips and warnings
- Adjust the door height and width to fit your needs on a greenhouse that already exits.
- Make sure that the plastic sheathing is tight on the door to keep strong winds from entering the greenhouse and possible damage to the plants and greenhouse structure.
- When adjusting the height of a greenhouse door make sure to allow for 1/4 to 1/3 of the vertical post length on the frame for burying.
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