Got the material from home depot. The black duct tape on the edges folded over is gorilla tape and the blue tape is painters tape. The blue tape does not leave any residue when removed and comes off easy. Keeps inside of trailer lots cooler and doesn't break the bank. I only have the south and west windows covered. Do Not stick gorilla tape to your trailer because it will leave a residue. The blue tape holds up fine in the rain.

Everbilt 24 in. x 10 ft. Double Reflective Insulation Radiant Barrier 24x10DRI - The Home Depot
Keep your property warmer in winter and cooler in summer with the selection of this Everbilt Double Reflective Insulation. Ideal for floors, walls and roofs.
www.homedepot.com
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