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Greenhouse Glazing Options

Glazing is the material that covers the greenhouse frame. The most widely used options are glass, plexiglass, polycarbonate and poly film.

Glazing choice usually dictates the appearance, as well as the price, of a greenhouse. As you consider glazing options, keep in mind suitability for your site, the required installation skill level and your budget.

Glass and plexiglass
Glass and plexiglass are long-lived, strong greenhouse glazing options. Because of these materials’ rigidity, installation of either requires that you be skilled and precise. Glass is heavy and brittle. Plexiglass is easier to work with, but scratches and is used by only a few manufacturers.

Neither of these transparent materials diffuse light well, which is less than optimal for your growing plants. Both glass and plexiglass will be expensive to repair if you live in an area with periodic hailstorms. Prices for these materials are moderate to high.

Polycarbonate is a rigid, translucent plastic available in single layer and honeycomb styles, similar to corrugated cardboard.

This material can be cut with a saw and is easier to install than glass or plexiglass. Longevity varies, but polycarbonate is usually warranted for 10 years. Single layer “polycarb” costs are in the mid ranges, while the more energy efficient honeycomb tends to be pricey.

Poly film

Poly film is a thick, flexible material that is easy to install with homeowner tools and modest building skills. Its translucency diffuses light well, bouncing the available sunlight and reducing shadows, both of which aid plant growth.

Depending on your individual gardening conditions, poly film lasts 6 - 8 years for most growers. (Longer for many, we’ve discovered.) It is easily replaced as needed and is the least expensive glazing choice.

This pliable material is an excellent match for the rounded shape of a Hoop House.

Greenhouse poly film with ultraviolet (UV) protection is our preferred glazing material for ease of installation, versatility and low cost. Custom sized, 6-mil film, with a 4 year guarantee is included in your greenhouse kit, along with complete assembly instructions.

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Greenhouse Glazing Options

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