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polyethylene films are manufactured in widths of up to 50 feet

COVER & GLAZING HOME PAGE ROLL POLYFILM HOMEPAGE 4HL 55% WHITE SUNSAVER IR/AC 4HL CLEAR OW CLEAR 5 MIL OW WHITE 5 MIL OW CLEAR 3 MIL OW WHITE 3 MIL PRODUCT INFO FEATURES GUIDELINES

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General Guidelines for Handling Polyethylene Films in Greenhouses

'click here' to see the types of polyfilm available

'click here' for other types of greenhouse coverings you can buy

A.   General

1.  When using Sun Selector films, it is imperative that the installer knows there is and inside and outside to the films. When you are inside the greenhouse, you should be able to read the words "Sun Saver" or "Fog Bloc" correctly. If the words are backwards, the film is upside down and the anti-drip properties will not work properly.

If your polyfilm does not have words as described above, use the drawings below:

'click here' for assembly accesories

2.  When using Standard UV films, surface of film can be placed with either side in or out.

3.  Store the rolls of film in a shady spot, on a flat surface, balanced and covered. It is recommended to keep a sample piece of film with manufacturer's identification.

B.   Preparation of Greenhouse Structure

1.  Paint all metal and wood surfaces touching the poly with latex paint. Never use oil based paint.

2.  Use straps at bows to stop waves from forming in the film.

3.  Avoid film contact with any PVC plastic or vinyl. It can cause the film to slowly degrade. It is recommended to cover that part (PVC that will come in contact with the polyfilm) up with some extra polyfilm before putting the film on the greenhouse or paint the PVC with a white water-based latex paint or UV protective paint. Either one will work.

4.  Smooth the surface of metal and wood parts that come in contact with the films and wrap with polyethylene tape (white or transparent that contains U.V.A.) over all protruding parts.

5.  Clean gutters and install drainage pipes.

6.  Use only repair tape recommended for poly film.

C.   Film Size

Calculate film sizes as follows:

1.  For greenhouse spans of up to 25 feet, add an additional 3.3 feet to span size.

2.  For greenhouses spans over 25 feet, add an additional 5 feet to span size.

3.  For tunnels, calculate an additional 5 feet for openings (for fitting into channels).

4.  The length of the film will be approximately 16 feet longer than the greenhouse/tunnel.

5.  For curtain walls calculate the height of the curtain walls with an additional 20"- 30" for supports; length should be the length of the greenhouse.

 
 
'click here'
for detailed pdf polyfilm information booklet

 

LINKS TO OTHER COVERINGS
greenhouse materials, glazing GREENHOUSE COVER POLYETHYLENE
IN FLEXIBLE UV PANELING SHEETS
twinwall poly POLY FILMS
twinwall poly POLYCARBONATE
RIGID TWINWALL SHEETING

 


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