The downside to corrugated glass is the cost. You'll pay a little bit more for it. In this case, you will get what you pay for. Corrugated glass is much more durable and will last much longer.

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It doesn't ever need to be shaded. Hail stones will not create any damage to the corrugated glass. Nor will it be bothered by heavy snow. Corrugated glasss are also good because you won't have to worry about termites chewing on your greenhouse. Corrugated glasss will transfer up to 85% of the sun's visible rays. Another downside to using corrugated glass is you'll be a little more limited on what types of plants you can grow in your greenhouse.

A corrugated glass greenhouse wouldn't be suitable for plants that need a lot of direct sunlight. Plants such as annuals, geraniums, cacti, etc…These greenhouses will do very well for such plants as orchids, African violets, anthuriums, Rex Begonias, ferns and similar plants which only need medium to low light levels.

One problem for glass greenhouses is effective ventilation. Most glass greenhouses have hinged sashes on the walls, instead of on the roof. It's advisable that you put sliding panels for ventilation on the gable ends. By doing this, you will allow greater air flow and better ventilation.

One other thing to keep in mind about corrugated glass: As it ages it becomes darker. When the corrugated glass is brand new, it has a minor tint of rust to it. As mentioned, as it gets older this tinting can become darker, which will cause some of the light to be shut out.