This is the greenhouse with the end walls up and the temporary plastic roof in place. The opening for the door is there but the custom door is yet to be built and the opening still needs to be trimmed out. The siding will be primed and painted and siding needs to be put on the north and south knee walls to match the end walls. This end wall will hold the electrical box and a louvered opening which is part of the ventilation plan to cool the greenhouse. The opposite end will hold a ventilation fan. Having everything enclosed allows work to progress on the inside.
Thursday, December 31, 2009
Tuesday, December 1, 2009
After the rafters are in place and braced the next step was to frame the east and west end walls and the wall dividing the growing area from the storage area. These stud walls can be seen in this picture and the picture below on the left.
The plywood is fastened beginning at the low edge. Nathan used a nail gun to attach the plywood to the rafters. Braces are nailed to the plywood to form a place to stand while working on the higher parts of the roof.
Not all of the fastening is done with a nail gun. Here a hammer is used on one of the last sheets of plywood to go on the roof.
Sunday, November 15, 2009
A snowy day in fall of 2009 we built 13 rafters. Once they were all built we raised the first one into place and fastened it to the north and south knee walls. In this photo you can see the sill for the dividing wall between the growing area on the right and the storage area on the left.
Temporary bracing is used to hold the first rafter up and in correct alignment. Michelle on the ladder, Nathan and Dad on the ground.
Permanent bracing is then fastened to each rafter on the south (glazed) side to keep the rafters correctly spaced. On the north (shingled) side plywood under the shingles will be fastened to the rafters which will hold them in place.
Nathan on the ladder attaching bracing. The braces are staggered to allow them to be fastened through the rafter.
Grandpa Denny supervises from the ground. His building experience and surplus building supplies and tools proved invaluable.
The last rafter is in place. It is starting to look like a building.
The Garden Goddess greenhouse in nearby Milan which is our inspiration has a dirt floor with an insulated foundation. This greenhouse is different from theirs as it is being built on an existing concrete slab. This site was chosen because the electrical and water are already there. The Garden Goddess greenhouse has an elaborate system of pipes buried deep within the dirt floor that warm air underground and fans that circulate the warmed air in the greenhouse. Our situation will be different. We will need to rely on heat sink to collect warmth during the day and release it during the night. We are hoping to not need supplemental heat in order to keep the inside temperatures above freezing. The dirt floor and raised beds in the Milan greenhouse act as additional heat sink absorbing warmth from the sun. Our floor will require that our plants be in containers and may thus pose additional challenges for keeping the greenhouse warm.