Material Specifications (what it’s made of)
The Original Rainwater Pillow is manufactured for long term
water storage usage. The Pillows are made from first grade
materials and all are provided with a certificate of fitness upon
- The Material is a reinforced polymer alloy (polyester scrim
coated on both sides with a PVC polymer). The same heavy duty
industrial strength fabric commonly used by the military and fire
- Ultra violet radiation inhibitors are incorporated in the
manufacturing process of the polymers to provide excellent ultra
violet radiation resistance.
- Fabric weight 6.5 oz sq yard
- Total weight 30 oz sq yard
- Its abrasion resistance is > 2,000 cycles. This means that
an independent ASTM lab has determined that every square inch of
the Original Rainwater Pillow can withstand friction more than
2,000 times before it begins to abrade.
- The breaking strength of our material is 550 lbs per inch,
which means a one-inch strip of it can hold 550 lbs.
- Tear 80 lbs
- Adhesion 35 lbs/inch
- Seams are radio frequency welded, which means that we use
electromagnetic energy to heat and bond materials together under
pressure, ensuring strong, leak-proof seams. Each pillow is
pressure tested before shipping.
- It is severe-weather tolerant, able to sustain extreme
temperatures, ranging from -30 to +160 Fahrenheit.
- Easily repairable with heat or cold bonding.
The Original Rainwater Pillow is exceedingly durable and shows
excellent resistance to ruptures, abrasions and leaks.
It has also been shown to be impervious to rodents in 30 years
of experience using these pillows in crawlspaces, under decks, in
yards and a wide variety of other spaces that rodents tend to like,
our manufacturer has never seen any rodent damage. And neither have
we ! We have installed pillows outside in areas infested with cats,
racoons, armadillos, rats, squirels, and mice. These animals have
shown no interest in the pillows.
Case Histories on the Material's
After over 17 years as a holding
basin at a large oil company in the Texas desert, the material has
shown no signs of environmental stress cracking, thermal
expansion/contraction, or strength problems. Temperature ranges
from near zero to over 100 degrees F.
The material was exposed for over
12 1/2 years in Sarasota, Florida, on a weathering rack, facing the
southern direction. No significant color loss, cracking,
blistering, or adhesion delamination failure of the coating was
In service approximately 17 years
in a solar pond application at a researh facility in Ohio, UV
exposed samples, as well as immersed samples, retained over 90% of
the tensile strenght. Examination of the material determined there
was little effect on the coating compound.
Mammoth Cave National Park.
Installed in 1984, the material is performing as well today as it
did 25 years ago. Our fabric has the highest tensile
strength and puncture resistance in the industry !