Spray Foam Magazine - Sept/Oct2015

While prepping the concrete surface for both tanks, the crew scraped off the existing rubber tar membrane system and then sandblasted the concrete surface using crushed glass in an 18-inch curb going up the steel wall.

“The purpose of applying the crushed glass up
the steel wall was to create a profile for the poly-
urea to grip and grab to,” said Passarella. “For
the concrete surface, the crushed glass blasting
cleared off all the debris and allowed us to get
a base, clear surface, which was necessary for a
smooth application.”
Seneca put their faith in Straight Line Contract-
ing for the tanks’ restoration, which entailed the
application of polyurea to the tanks’ compromised
concrete floors. Prior to their arrival, the tanks
were completely pumped to devoid them from any
moisture. Then, a three-man team from Straight
Line arrived at Seneca’s facility and went straight
to work.

“Polyurea was the correct choice for this particular project,” said Straight Line’s Megan Passarella. “It creates a seamless, self-adherent membrane that can withstand the treatment process and last for a long time versus other epoxy products that require constant maintenance and reapplication. Seneca was looking for a solution that would see those in charge of this operation not having to worry well after their retirement. We gave them that within a short time frame, as the polyurea cures rapidly and works effectively.”

PREP WORK

The tanks were drained before the coating application commenced [top]; the Straight Line crew removed the existing tar membrane to expose the concrete floor [bottom]

Polyurea was the correct choice for this particular project. It creates a seamless, self-adherent membrane that can withstand the treatment process and last for a long time versus other epoxy products that require constant maintenance and reapplication.” “