While I decided to use the plans provided on CanadianGardening.com, we (meaning my wise, more experienced husband) made a few changes based on our needs and site.
We chose to make the lip for fitting the booster frame to the top 1/2 inch instead of 1/4 inch. It just didn’t seem deep enough. We also decided to put a bit of a top on the back to make the back of the frame stronger and to allow a different hinge attachment.
A bit of the hard-won wisdom I’ve gained this week:
Choose the widest board you can find for the angled side pieces. I wasn’t thinking about this when I chose fence board (5 1/2 inches). I was limited to a smaller angle for my window than I would have been if I had used the 8 inch boards recommended. This, of course, means I won’t get the same solar gain I could have.
Measure twice, cut once. And think it all the way through: the measurement of the side of the cold frame will not be the same as the side of your window. Window on angle = shorter side measurement. Duh.
Cedar is a very soft wood. It will split on you. It’s a very good idea to use an awl to make your holes for the screws (or pre-drill), and go slowly. Chris actually used a brad nailer to put the frame together with the glue, and then we followed up with the screws.
In preparation for actually using my new toy, I put down a double layer of weed control fabric inside the finished box, just in case any dandelions get any bright ideas. I’m planning to set pots in the frame rather than filling it with growing medium, so with some shredded leaves on hand for extra insulation, I think it’s ready to go!
Makes me want to start more seeds… cukes, more tomatoes, and it’s about time to get the squash going…