A Roofer Develops a Solar Solution for Ponding Water on Flat Roofs

The original Sentinel II XD Solar Roof Pump includes a rotatable 20-Watt solar panel.

The original Sentinel II XD Solar Roof Pump includes a rotatable 20-Watt solar panel.

When you say “flat roof”, many people cringe, thinking of stagnant ponding water, health concerns and damaging roof leaks. And it’s not unusual during very rainy seasons to hear about low-slope roofs collapsing under the weight of ponded water.

Auxiliary roof pumps and even solar roof pumps have been around for decades but can be unreliable. Nicholas Bryditzki, a licensed roofing contractor and certified infrared roof inspector, developed the Sentinel Solar Roof Pump because he wanted a more reliable option. “It’s not that I invented it; they already exist but none of them work,” he says. “I went to a premier solar engineer with the concept and said I want to make this thing ‘roofer-proof’.”

To Bryditzki, “roofer-proof” means the roof pump had to be very durable. Consequently, the Sentinel Solar Roof Pump is encased in spun aluminum that is powder coated with a DuPont coating to keep the patent-pending system cool. In addition, patent-pending cold-weather protection ensures the pump won’t freeze and burn out. To further protect the pump, a sensor detects when water needs to be drained, so the pump doesn’t run all the time; it uses a “siphon-effect”, per Bryditzki. The 20-Watt solar panel is large enough to recharge the battery.

The Sentinel II LP Solar Roof Pump is a stationary unit with an embedded solar panel.

The Sentinel II LP Solar Roof Pump is a stationary unit with an embedded solar panel.

“Roofers showed a little resistance to this until I showed them how to actually save a roof and service it until the owner was ready to re-pitch and re-deck or instead of installing expensive new in-roof drains,” Bryditzki adds. “That’s how it’s catching on right now.”

Currently, there are three Solar Roof Pump models available: the original Sentinel II XD Solar Roof Pump, which can be placed where it’s needed; the Sentinel II LP Solar Roof Pump, which is a stationary unit with an embedded solar panel; and Sentinel II XDR Solar Roof Pump, which features a removable solar panel that can be placed away from the pump. “We also developed a pan flashing; roofers install the pan in the roof, place the solar roof pump in the pan and, depending on the roof surface, it will help drain the roof down to virtually no water whatsoever,” Bryditzki adds.

The Sentinel II XDR Solar Roof Pump features a removable solar panel that can be placed away from the pump.

The Sentinel II XDR Solar Roof Pump features a removable solar panel that can be placed away from the pump.

Bryditzki is delighted by the Sentinel Solar Roof Pump’s success during the two years it has been available in the marketplace. He credits the success to the design of the roof pump itself. “The original prototype is still installed and running in the middle of New Mexico,” he says. “I was just out there last month and we tried to break it; we put mud, leaves and rocks in it and it was still draining.”

Learn More
Visit SolarRoofPumps.com.
Call (817) 771-5027.
Watch a Sentinel Solar Roof Pump video.

This “Roofers’ Choice” was determined by the product that received the most reader inquiries from the March/April issue’s “Materials & Gadgets” section.

PHOTOS: Nicholas Bryditzki

The KEMPEROL Roofpatch Provides 50 Years of Waterproofing Technology in a Quick Kit

KEMPEROL Roofpatch is a ready-to-use patch kit from Kemper System America Inc., West Seneca, N.Y.

KEMPEROL Roofpatch is a ready-to-use patch kit from Kemper System America Inc., West Seneca, N.Y.

KEMPEROL Roofpatch is a ready-to-use patch kit from Kemper System America Inc., West Seneca, N.Y. Kemper System invented cold, liquid-applied, reinforced waterproofing technology more than 50 years ago, and the Roofpatch kit offers the company’s technology as a quick solution to reliably stop leaks and cover cracks and damaged areas.

“The product itself is a cold, liquid-applied membrane system,” says Gino Soroker, brand and business development manager for Kemper System America. “Typically our product comes as a container of liquid and a roll of fleece, and you need a contractor to put the two together. Here you get the two already married.”

The kit’s flat aluminum packaging includes rubber gloves and a reinforcement fleece pre-saturated in a single-component, solvent-free and odor-free KEMPEROL 1K-SF waterproofing resin. The reinforced membrane is pre-cut to approximately 10 by 18 inches; a single patch can handle most repairs. Patches also can be overlapped to cover larger areas.

The reinforced membrane is pre-cut to approximately 10 by 18 inches; a single patch can handle most repairs.

The reinforced membrane is pre-cut to approximately 10 by 18 inches; a single patch can handle most repairs.

The multipurpose patch adheres tightly without a primer to bitumen sheets, PVC roofing, concrete, wood and metal. The resin is rainproof in 60 minutes and can be walked on after 12 hours.

Soroker says the kit is ideal for roof consultants and roofing contractors, as well as building owners and property managers, seeking an immediate repair on a roof. “If a building superintendent or roofing contractor gets called up on the roof because a tenant reports a leak and he sees an overlap or a crack, he can rip open this aluminum pouch and slap on the roof patch right there and then,” he says. “If a specifier or consultant needs to cut open the roof to find out what’s happening beneath it,
he can put the piece he cut out back in, place this patch right over it and seal up the hole he just opened.”

The kit’s flat aluminum packaging includes rubber gloves and a reinforcement fleece pre-saturated in a single-component, solvent-free and odor-free KEMPEROL 1K-SF waterproofing resin.

The kit’s flat aluminum packaging includes rubber gloves and a reinforcement fleece pre-saturated in a single-component, solvent-free and odor-free KEMPEROL 1K-SF waterproofing resin.

Developed in Germany, the UV-stable Roofpatch was introduced in the U.S. a year and a half ago. It currently is available nationwide through select distributors of building products. It also can be purchased via Kemper System America’s online store, which can be accessed through its website.

Learn more
Visit KemperSystem.net.
Call (800) 541-5455.
Watch the Roofpatch demonstration video.

The inaugural “Roofers’ Choice” was determined by the product that received the most reader inquiries from the January/February issue’s “Materials & Gadgets” section.

PHOTOS: Kemper System America Inc.