Greenhouse Construction Costs.

March 7th 2012


Some costs for the construction of the greenhouse are as follows.

Plywood                    16 sheets of 3/8"              @ $10  each           $160
Insulation Board           7 sheets of 2" R14.3       @ $3 each (used)   $  21
General Lumber                                                                 approx    $  25
General Hardware                                                              approx    $ 50
Paint                            3 gallons of grey               @ $5 each (reject) $ 15
                                    2 gallons or brown           @ $22 each           $ 44
Plastic fittings and snap clamps                                                           $ 80
Conduit                      32 sticks of 1" x10'-0" length  @ $2.20            $ 71
Plastic Sheet               23' long x 42' wide                                         $ 127
Door                              FREE                                                          $   0
Steel posts                      FREE                                                          $  0
                                                                                   Total                $ 593  (approx $1 per sq. ft.)


  This cost is not fully complete as some structural strengthening will need to be done based the semi-collapse which occured due to heavy wet snow on Friday March 2nd.  I will also need to add some guttering to the hoophouse to capture and channel rainfall for re-use in watering plants in the hoophouse.  On the other hand this cost is much higher than it need be if one was content to do without the paint, and especially the frost wall, which would not be needed in a slightly warmer climate.  I estimate that eliminating these costs would save about $250.  Also, most if not all of the frame could be constructed using pieces of free galvanized pipe and fittings scrounged from a chain link fence.  This can sometimes be had free for the taking if you are willing to do the demolition labor.

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