subject: Installing Greenhouse Polycarbonate - Which Profiles Are Better? [print this page] Installing Greenhouse Polycarbonate - Which Profiles Are Better?
There are basically three types of H profiles and 2 types of U profiles available. They vary in price range and also in the way in which you install them. The H profiles goes between 2 sheets. The U profile goes at the top and the bottom of the sheets to seal off the channels. The bottom U should have small (1/8") holes drilled every 2 feet for drainage of any condensation.
One part polycarbonate H - This is the least expensive H. It is made of the same material as the sheets and also has UV protection on one side, the same as the sheets. To install this you attach your sheets loosely to the frame allowing space for the H. You start at one end and slide it up between the sheets. This sounds easy enough, but the profile is tight intentionally. You may need to use a couple of drops of mild detergent in some water to lubricate them. Also, you can use a board to protect the end and hammer them into place.
Two part polycarbonate H; sometimes referred to as base and cap or snap H - To install this you screw through your base into the framing material. You put the sheets on the profile on either side. Then you "snap" the cap into place using a rubber mallet. You should hear the snap. This means you have a solid connection. This profile also will have the UV protection on one side. They are more expensive than the one part polycarbonate H, but are much easier to install, especially on longer sheets.
Two part aluminum H; sometimes referred to as base and cap - They basically install like the two part polycarbonate H, except the cap is screwed into the base profile. They will come in white or bronze and may be used to match trim on your house for a cleaner look. They are the most expensive of the H profiles.
Polycarbonate U - This profile is very snug. It simply slides onto the sheets. It has UV protection on one side the same as the sheets. They will be the least expensive U.
Aluminum U's - These are screwed into the sheets. They will be the most expensive U.
I hope this will help you when you are deciding on which type of profiles to use while installing your greenhouse polycarbonate.
Tammy Wylie has been selling and installing greenhouses since 1993. She currently owns two greenhouses personally. A smaller 8 x 12 is used to overwinter plants. Her 18 x 24 greenhouse is used to start vegetables, herbs and annual flowers. She also tests new products in this greenhouse and evaluates them for efficiency and user friendliness. She is the owner of http://advancegreenhouses.com
For more information on polycarbonate visit this page http://advancegreenhouses.com/Polycarbonate Sheets from Advance Greenhouses.htm
