On Sep 10, 12:25 pm, John Mulligan John.Mulligan.
wrote:
Anyone provide basic design reqiurements for a d-i-y-winter cold frame?
Choice of materials, features etc.

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John Mulligan

Plastic glazing is more likely to stay in one piece than glass.
Recycled materials work as well as new. Protect from freezing
overnight. Locating the frame on a southerly side of your house
helps. Keep a blanket handy to throw over the sash during
overnight cold snaps.

Hay bales are excellent insulation and can be stacked
around the cold frame. You can in fact build a cold
frame by arranging bales in an open square and laying
an old window sash over top.