kudzu, thanks for the tips. That last one made me laugh.

Kudzu gave good suggestions except for the helicopter. He must have watched the greenhouse being moved on "Alaska, the Last Frontier" TV program.

I put a pool cover on a 15x40' greenhouse in 2007 and I thought the easiest part was pulling it over the structure. I approach putting all film installation the same way:

1. Partially fill half gallon jugs with water, tie stringline to each and toss over the structure. I usually use 3 or four lines.

2. Form film around a softball and tie a string around the base. For regular film I double up the film before this step but for pool cover one layer is enough to prevent excessive stretching of film.

3. Start pulling, a little at a time, and push up from underneath using a heavy glove duct taped on the end of a pole.

4. Keep moving from line to line pulling and from section to section underneath pushing until film is where you want it. Try to square-up as much as possible before you begin attaching. I really like a wire-lock system for a solid attachment.

If the helicopter is not an option, I vote for a "barnraising" type party.

Barrie, thanks for the tips.

Please explain tip # 2.

What is a wire lock system for attaching?

OK. The reason for the softball (baseball) is to have something to pull on without stretching the plastic. A round smooth rock would also work.You need to allow enough plastic to cover the ball, then lift the ball covered with plastic enough so that it appears like a ghost head under a sheet; then tie the ripe around the ghost's neck so to speak. You should be able to pull fairly hard on the ripe without damaging the plastic this way but you still need to use discretion and if pulling is hard, stop, tie off and move to next ripe or pole.

Wire-loc is the best fastening method since sliced bread IMO. There are two components. First is the aluminum base which you tech-screw to the metal frame. It has a "C" shape grove. Second are the steel wiggle-wire sections that are inserted into the base while over plastic. Once fastened you can remove the wire and reuse many times. You will need to flatten pool cover bubbles where the wire is fastened. With normal 6 mil film you can have two film layers fastened With two wiggle wires on top of eachother. My greenhouse with the pool cover has an inner and outer film sandwiching the pool cover so I could only use a single wiggle wire to hold all three plastic layers on that greenhouse. _/=\_/=\_/=\_ is somewhat what wiggle wire looks like in 4' sections. It is spring steel so when installing with up and down motion anybody near you should have eye protection.

Sorry, the auto-correct feature got ahead of me. All "Ripe" references should read "Rope".

In place of the wire-loc product, you can also use pvc pipe, cut in half lengthwise. It should be smoothed first and then a few screws along the length of the greenhouse to hold the pipe, film and into the structure.

Many forms of PVC will deteriorate film when it comes in contact. Plus cutting any pipe centrally through center is dangerous and a PITA.

A small piece of scrap plastic or foam between the PVC and roof covering material eliminates any potential negative effects. The four greenhouses we built in Central America all use this technique successfully. The PVC sections were cut with a hack saw since we did not have power tools or electricity, without any injuries. Relatively small greenhouses (40 ft. x 20 ft) using this method did not require undue time or effort to cut the PVC.

I did it! I used Barrie's idea of tying bottles of water the pool cover and and heaving them over the GH. I inserted grommets into the cover after reinforcing with duct tape. I pulled the cover up until it got caught on something and then got up on the step ladder to free it. It that a few times and the job was done, I secured it with bungee cords and ropes.

Thank you everyone!!!

You did it!!! Way to go, Vladimir!!!