|

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

SMART PHONE REVIEWS
Great gadgets: Top 5 smart phones of 2014Video These state-of-the-art devices do more things right, more often.
WI-FI/BLUETOOTH SPEAKER REVIEWS
First look: Is the Amazon Echo all talk?Video It can play music and answer questions, but its people skills need some polish.
NEW CAR REVIEWS
Exclusive report: Best—and worst—new-car valuesVideo Our scores reveal which cars deliver the biggest bang for your buck.
INTERIOR PAINT REVIEWS
Budget face-lifts: 5 kitchen updates for $250 or less Learn how to add some splash without spending a ton of cash.
PAPER TOWEL REVIEWS
Best everyday cleaning products for big eventsVideo Find the top detergents and paper products from our tough tests.
SPACE HEATER REVIEWS
Space heaters that keep you and your room cozyVideo The latest crop of space heaters we’ve tested have improved safety features,

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