Last weekend I finished building a greenhouse almost entirely out of free and recycled materials.

The footprint is 9.5' x 9.5'. (The maximum footprint I can build on without permit in my town is 100 sq ft.)

The foundation is made of eight 2 x8 lumber from an old deck.

The framework is 2x4 s and 2x3 s, some lying around the house and some bought new.

East and North side  side shell is 11"  x 6ft plexiglass panels that are 1/16" thick. I overlapped the panel by about two inches and put clear silicone caulking between the panels. Roof is made of the same panels. I got the panels free from a friend.

West side wall shell is old windows picked up from curbside.

North side is old sliding glass doors got free off Craigslist.

Door is an old shower door.

All gaps sealed with silicone caulking. The window on south side has a nuvent automatic opener.
Hot air from my family room where I have a wood furnace going, through a 6" insulated duct with an inline fan.
Shelving is wire shelves bought from home depot.

I have about fifty tomato seedlings in there already. Need to do some final touch up sealing before I put a whole lot more in there

Here are thee photos.
The bonus photo is turkey struttiing in my front yard on 4/5. My neighbor has a bird feeder and group of fifteen turkeys were feeding there all winter. They are still feeding there ven after the snow is all gone. They are so used to people they just stand there and look at you at 20 feet!      

Congrats!  Looks great!  So when do the plants go in?

Suzi

That looks great, congratulations!

Good work!  Wish I had the room for something that big.

Amazing!  That's certainly something to be proud of.

Congratulations! Very good looking green house!
How long did it take for you to build it?

Nice work.......that looks great

You must be from louisiana. Good work. Love the shower door and heat from house piped in. That really ties in the whole red neck theme. Got to say its a professional red neck job

You did a great job putting that together. We often recycle materials to save on expense but our outcome has not been as slick as yours. The turkeys look delicious too!

You should write that up in an email with the pictures included and send it to Mother Earth Magazine, you might get it printed.  Good job!

That is impressive and a good visual example what some of us other folks could rig up.  Thanks for sharing!

Love it and love the recycling.  Great job making it all fit with the non uniform shaped pieces. 

How do you get the air into it from the vent?  Is there a fan inline?  Can you, for example, turn it on at night and turn it off during the day?

I bet you could greatly improve the insulation by using plastic sheets on the inside taped/stapled/glued to the 2X4 frame.  They sell the stuff for people who have those old single pane windows.  I think it's pretty cheap.

I have heard you can use dark colored containers of water placed strategically inside to help it maintain temperatures overnight and add to thermal mass.

You did  great job on your "redneck" greenhouse! Very well put together and designed. You cant beat free, or recycled!! If people would look around freecycle, craigslist, go around the neighborhood on trash pick up day, or find building contractors and friends who are remodeling, they would be amazed at the material you can pick up for free.
I have been collecting old used patio doors and windows for close to 20 years. I knew I could make a gh out of them someday. And my dream came true eight years ago when my hubby and I built a unheated recycled 12x18 Greenhouse with them.  We used polycarbonate gh panels on the roof and a few on lower half of north wall. We already had the framing from leftover building  material that we cut and dried ourselves. I love it! It gives me three extra months for growing season. I will post pics someday soon.

Nice greenhouse. It is my kind of a deal.

Very nice work!

Really great job!  Looks fabulous!

This is a great idea and job Mat!

I don't think you need it for spring and summer but if you are planning to use it for winter you could insulate the inside with bubble wrap.

Thank you all, for the kind words.

@ Danny:
I was busy all day fencing the area where I planted the onions. The water heater picked this day to  quit, so got a new one from the box store and installed it. Will post photos of the inside probably tomorrow.

@ Pino
The bubble wrap is a very good idea. need to find out how expensive the rolls are.
Mat