10×16 Greenhouse Plans

This step by step woodworking project is about 12×16 greenhouse plans. If you want to build a medium-sized wood greenhouse for your backyard, we recommend you to take a look over this project. Before starting the construction, you need to find out the legal requirements regarding this type of constructions. Follow the building codes and hire a professional contractor if you don’t have the right skills to undertake the project on your own.

The location of the wood greenhouse should be set as to benefit from sunlight, most of the day. This aspect is essential for your future crops, as the plants need morning light to develop properly. Place the solar greenhouse far away from buildings or trees. If this is not possible, try to build it as to get the morning light from east. Before building the wood greenhouse, level the ground and excavate the soil if necessary.

If you want build a durable greenhouse, you should choose the materials with great care.  Buy pressure treated lumber or cedar, making sure the studs and beams are perfectly straight. In addition, examine the studs and select the lumber without visible signs of damage. Use the right woodworking techniques, as to join the wood properly and a spirit level to plumb the walls before setting them into place.

 

Made from this plan

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Building a large greenhouse

Building a large greenhouse

 

Materials

  • A – 2 pieces of 4×4 lumber – 120″ long, 2 pieces – 192″ long BASE
  • B – 2 pieces of 2×4 – 192″ long, 9 pieces – 72″ long 2xSIDE WALL
  • C – 2 pieces of 2×4 – 113″ long, 5 pieces – 72″ long 2xFRONT WALL
  • D – 2 pieces of 2×4 lumber – 28 3/4″ long, 1 piece of 2×6 lumber – 192″ long TOP RIDGE
  • E – 18 pieces of 2×4 – 68 1/2″ long RAFTERS
  • F – 2 pieces of 2×2 lumber – 69″ long, 2 pieces – 26 1/2″ long, 1 piece – 23 1/2″ long, 2 pieces – 41″ long DOOR

 

Tools

 

Time

  • One Week

 

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12×16 Greenhouse Plans

Building the base of the greenhouse

Building the base of the greenhouse

 

The first step of the project is to build the base for the greenhouse. Therefore, cut the components from 4×4 lumber. Make sure you choose a proper location for the greenhouse, so that it gets at least 8 hours of direct light every day. In addition, remove the vegetation layer before attaching the beams. Use 24″ long 2×4 stakes to anchor the base to the ground. Place the stakes every 36″ for proper support.

 

Cut the ends of the base beams

Cut the ends of the base beams

 

Make notches to both ends of the beams, as shown in the diagram. Mark the cut lines on the beams and get the job done with a circular saw. Make parallel cuts and remove the excess with a damp cloth. Smooth the recess with sandpaper. Use 3 1/2″ screws to lock the beams together. In addition, make sure the corners are right-angled.

 

Building the side walls

Building the side walls

 

Next, you need to assemble the sides walls for the greenhouse. Cut the components from 2×4 lumber. Drill pilot holes through the plates and insert 2 1/2″ screws into the studs. Make sure the corners are right-angled and align the edges with attention.

 

Building the front and back walls

Building the front and back walls

 

Build the front and back walls for the greenhouse. Drill pilot holes through the top and bottom plates and insert 2 1/2″ screws. Place the studs equally-spaced and make sure the corners are square.

 

Fitting the side walls

Fitting the side walls

 

Fit the side walls to the base of the greenhouse. Use a spirit level to make sure the walls are perfectly plumb. Use 2×4 temporarily braces to lock the side walls into place, as shown in the diagram. Drill pilot holes through the bottom plates and insert 3 1/2″ screws into the base.

 

Assembling the greenhouse

Assembling the greenhouse

 

Next, fit the front and the back walls to the greenhouse. Make sure the walls are plumb and check if the corners are right-angled. Drill pilot holes and lock the adjacent studs together using 2 1/2″ screws.

 

Attaching the top ridge

Attaching the top ridge

 

Next, you need to build the roof for the greenhouse. Build the supports from 2×4 lumber and the top ridge from 2×6 lumber. Center the supports to the top plates and lock them into place with 2 1/2″ screws and corner connectors. Make sure the supports are plumb. Attach the top ridge and lock it to the supports with screws and plate connectors.

 

Building the rafters

Building the rafters

 

Build the rafters from 2×4 lumber. Cut one end of the rafters at 30 degrees and the opposite at 60 degrees.

 

Fitting the rafters

Fitting the rafters

 

Attach the rafters to the top of the greenhouse, as shown in the diagram. Drill pilot holes and insert 2 1/2″ screws to lock the rafters to the ridge and to the top plates. Place the rafters equally-spaced for a professional result.

 

Building the door

Building the door

 

Build the door for the greenhouse from 2×2 lumber. Cut the components at the right dimensions and align the edges with attention. Make sure the corners are square and drill pilot holes. Insert 2 1/2″ screws to lock the components together tightly.

 

Attaching the door

Attaching the door

 

Fit the door to the opening. Use three hinges to lock the door to the frame of the greenhouse. In addition, we recommend you to install a latch to lock the door into place.

 

12x16 Greenhouse Plans

10×16 Greenhouse Plans

 

Check attentively the wood greenhouse before covering it with translucent polyethylene foil / sheets. Make sure there are no sharp edges or protrusions that could cut the foil.

Smart Tip: Apply a few coats of stain or exterior paint to the components, in order to protect them from decay and water damage. Make sure you choose quality components taht suit your needs and tastes.

 

 

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