Greenhouse Plastic Hold-downs
Step One
Attach a 2x4 board securely to the base of your greenhouse structure - at ground level. It is critically important that this structure is very firmly attached to the supports and that it will not move.
Step Two
At the top of the 2x4, attach a length of 1x2 board securely. Run this the entire length of the greenhouse as well and screw it to the 2x4 rather than nail for added strength.
Step Three
A second run of 1x2 will be attached to the bottom of the 2x4 to hold down the plastic as in the diagram below. The plastic is over the top of the upper 1x2 and below the bottom 1x2. This means the pressure of the wind and plastic shifting is taken up by the edge of the 1x2 rather than by individual fasteners. Individual fasteners such as staples rip the plastic; this system does not.
I’ve used this simple system for years. The bottom 1x2 is replaced every few years when you change the plastic as it will rot out. The 2x4 and top 1x2 are not in contact with water and they will outlast the bottom piece.
I’ve used this to cover greenhouses as well as set up tarps to cover woodpiles and other areas where I didn’t want the covering to rip or tear. It works like a charm to hold down greenhouse plastic or any other covering.
Clickhere to ask about greenhouse plastic and holding it down
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