How to Build a Portable Greenhouse - Part 3 Materials & Front

Over one or more sections on each side of the roof according to the gardener's ideas about fresh air a frame made from 2in. x 1in. battens with halved joints will be hinged and it should be clearly understood that one side of the roof with covering, and skylight complete will form a unit which is to be bolted to side and end, walls. Hinged ventilating units can also be arranged along the walls themselves.

Angle irons bolted in corners and steel braces to the roof will keep the framing square, and steel or wood stakes in the corners will make easily removable fixtures to the ground besides which there will be stiffening from the inside shelves and fibrous cement sheets 3ft. high.

To build a greenhouse 9ft x 5ft. 6in., including shelving and trestles about 1000 feet of 2in. x 1in, batten at 9/- per 100ft. will be needed and probably the best way to start will be to out seven studs and three rails for each of the side frames. All the rails can be held together and set out, then end and centre studs can have one nail in each joint ready for diagonals to be tested, and, when the frame lies square, braces can be fitted and the remaining studs filled in until all members are thoroughly nailed and the wall appears to be built of 2in. x 2in. stuff.

With the roof framing set out here on the ground:

In this way it will be evident that if end and centre studs are nailed to bottom and middle rails and the centre stud left long enough it will be easy to set out the roof pitch by measuring aft. to centre of wall as indicated. If, as is likely, the end studs are not quite straight, a temporary spacing batten should be nailed across until rafters are fixed.

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How to Build a Portable Greenhouse