How to Build a Portable Greenhouse - Part 2 Construction

The simplest form of construction is to use 2in x 1in hardwood battens lapped as shown here:

This avoids a lot of tedious halving and in addition keeps the framing light enough for transport in case the builder moves to another house and wishes to take it with him.

Another factor in lightness, as well as light, is the use of sailcloth. In appearance it resembles course fly wire, ready for fixing, to wood frames with staples or strong tacks. Gardeners have long regarded it as ideal for forcing frames, hot houses and the like.

Rafter length has been set out to suit roof frames 3ft 2in wide, which will allow a 1in. margin on each side of the 3ft sailcloth. Only outer edges of these frames are 2in, thick. the intermediates being quite strong enough in 2in, x 1in, as shown here:

and the junction will finally be covered with narrow galvanised iron ridging nailed to one frame only to lift away with it when dismantling.

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How to Build a Portable Greenhouse