Donate |

Flex Seal claim check

We put this spray sealant to the test

Consumer Reports magazine: June 2012

In our scaled-down version of the Flex Seal promo, our skipper stayed dry (above right).

The claim. Flex Seal “stops leaks fast and is the easy way to coat, seal and protect almost anything,” the manufacturer says. In a promo video, pitchman Phil Swift applies Flex Seal to a screen door inserted in the bottom of a rowboat, then launches the boat with himself as skipper (left side of the photo above). It floats, of course. A 14-ounce can of the liquid is supposed to treat 2 to 12 square feet.

The check. Imitating the video for Flex Seal, we made our own tiny rowboat with a screen bottom, sealed the screen, and launched the boat in our lab “pond.” We also used Flex Seal on a copper pipe with drilled holes of different sizes, on an unsealed gutter, and on a cracked flowerpot. And we checked claims that the product is flexible and can be painted.

Bottom line. All aboard. Flex Seal floated our boat, and Teddy stayed dry. But with other uses, we hit rough seas. It took three coats of Flex Seal to plug the pipe holes, and larger holes blew out under water pressure. Even three coats didn’t seal vertical sections of our gutter’s end caps and joints: The product dripped down. Flex Seal was flexible but tore when bent too far. And although it sealed the crack in our flowerpot, we had to use two coats of spray paint to conceal our handiwork.

Editor's Note: A version of this article appeared in the June 2012 issue of Consumer Reports magazine with the headline "Flex Seal: Handyman in a Can?"
   

E-mail Newsletters

FREE e-mail Newsletters!
Choose from cars, safety, health, and more!
Already signed-up?
Manage your newsletters here too.

Latest From Consumer Reports

SAVE AT THE SUPERMARKET
8 ways to keep rising prices from eating into your budget Some food is more expensive, but there are ways to cut costs when you shop.
CHAIN SAW REVIEWS
Get out your chain saw because 'Sharknado 2' is hereVideo This time you can create an interactive light show while watching at home.
SAVE ON CAR RENTALS
Head-to-head in car-rental wars: Zipcar vs. Hertz Is Zipcar's innovative approach to renting a car a good deal for you?
CAR SEAT REVIEWS
6 best new convertible seats for your toddlerVideo Our tests will help you find the best seat for your growing child.
DIGITAL CAMERA REVIEWS
5 questions to ask before you buy a point-and-shoot Your answers can help you determine what your camera needs are.
CARS NEWS
Why Toyota should recall the Camry Hybrid Brake problems on 2007-11 models warrant a stronger company response.

Connect

and safety with
subscribers and fans

Follow us on:

Cars

Cars New Car Price Report
Find out what the dealers don't want you to know! Get dealer pricing information on a new car with the New Car Price Report.

Order Your Report

Mobile

Mobile Get Ratings on the go and compare
while you shop

Learn more