Stake the plastic down with landscape fabric stakes to keep it in place.
How to secure plastic sheeting to ground.
Dig a 3 inch deep trench around the edges of your garden bed.
Apply a polyethylene tape to the area where the pvc meets the greenhouse plastic.
Drape the plastic sheeting over the frame.
Use the landscape fabric stakes and hammer them down into the soil around the edges to secure the sheeting to the soil.
Push the edges of the plastic into the trench.
Rocks usually work well for keeping ground sheets in place.
You can easily pound a stake through the sheeting but this may lead to tearing which is why setting rocks on them is better.
Cover the dirt crawlspace with a plastic moisture polyethylene vapor barrier.
You may want to use poly patch tape here to make this connection extra secure poly patch tape is uv and weather.
Replace the soil into the trench so that the plastic is anchored down securely.
Hold the top left corner of the first plastic sheet to the top corner of the first wall and staple it into place with a heavy duty staple gun.
Make sure seams between your plastic sheets overlap each other then tape them down.
Hammer masonry nails through 1 by 2 inch strips of pressure treated lumber to hold the top of the polyethylene in place.
Use 3 8 inch staples to fasten the plastic to the.
Up the wall and fasten it there.
Additionally at the edges of your crawl space where the soil meets the walls leave several inches of sheeting allowance.
White tape is preferable duct tape has a top layer of polyethylene wrap an old piece of greenhouse plastic around the pvc before installing your new plastic.
Smooth the plastic over the top of the ground so it comes in contact with the soil and doesn t float above it.
Allowing a little slack or at least pulling on the plastic only enough to avoid wrinkles remove the wigglewires one at a time put the outer plastic in place and tack both layers in the channel.
Overlap any seams and tape them.
And bring the plastic about 6 in.
Leave an extra foot or two on the sides to help secure the plastic and trim any excess.