Flex Seal, 14 oz, 2-Pack, Clear, Stop Leaks Instantly, Transparent Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More

Works very good, used it 4 months ago on metal building and still looks like same day I put it on, no checking or discoloration yet

Have purchased other flexseal products in the past, so was anxious to try this spray can which makes it much easier to apply than some of the other products and does a good job of ceiling. Any leaks that you have. I use mine on a corner for a gutter on the outside, and we live in a climate that can vary from 10° below 0 to 101° above.

Good product but goes on thick, hard to get a even coat.

We used this on the roof of our camper. Worked great.

Works as expected. I used it on an outdoor storage box. The water beads up upon contact with the wood now. Use this product in a well-ventilated area. The fumes are brutal. I used it outside, and the fumes still lingered. I used a 3M filter mask when applying it, but still smelled the fumes when I returned to the box to see if it was dry. And the box was outside while drying.

First, I will list my scores for Adhesion, Ease of use, and Water Resistance. Then, I will elaborate and give my final conclusions. Adhesion: 2/5 Ease of use: 5/5 Water resistance: 2/5 Overall score: 3/5 Adhesion The initial coat stuck quite well with proper prep. I used denatured alcohol to clean the surface, then 60 grit sandpaper to rough the surface and help with bonding, and then another round of alcohol to clean dust. However, one coat will not give the desired results. Much like paint, areas lacking appropriate coverage are more visible when dry. This is where the adhesion becomes an issue. Proper prep, specially sanding, becomes difficult because this sealant is pliable even when dry. Its not possible to do more than the slightest scuff without the possibility of damaging the first coat. Due to the thick nature of the product, expect a lot of drips. The product is very runny fresh out of the can. Once the product is dry, the issues with adhesion aren't over. The commercials for flex seal (and the quality memes) make you believe the bond is like super glue on steroids. This is hardly the case. If there is any heat or any pressure this sealant will not hold. Heat causes it to soften, losing almost all integrity, and pressure will force water through the porous interior (caused by the aerosol delivery). Overall, the adhesion score is due to the drips on the second coat and beyond, and the lack of integrity at anything other then ideal (meaning low to no pressure and heat). Ease of use Apart from drips making an even coat difficult on anything not planar to the ground, this is as easy to use as you think. The most difficult part of the process is prepping. The nozzle is fairly accurate and in my experience didn't clog. If you intend to use this sealant in a tight space, the can may be difficult to manipulate. While the can states its a skin irritant, it's not terrible if you get some on you. The toughest part will be peeling it off. Smell is comparable to paint. Tolerable to use with an n95, though respirator will be your best bet. Smell dissipates in an hour or less with ventilation. I do recommend using nitrile gloves and safety glasses. Overall, very easy to use. Water Reistance As mentioned in adhesion, any pressure will cause fluids to seep through the sealant. Depending on pressure, could be a sweat, could be a drip. Due to the viscous yet flowing fluid upon first use, even coats are difficult to achieve, which in turn effects sealing. There are pictures on the can of "recommended uses". One shows patching potentially leaking roof shingles, however, on the rear text on the can specifically states not to be used in roofing scenarios. While advertising a flexible barrier (which was attractive to me because I wanted a sealant that would withstand thermal expansion), the actual mechanic of flexing significantly compromises the seal. Hence, most likely, the warning against using it on roofs, since the can heat up to 160°F during summer. Overall, the score is based on the fact in nominal pressure and temperatures environments this will seal and hold out moisture, but in anything else the seal is questionable at best. The overall score of 3/5, and as the title alludes to, means that this sealant is meant for low stress sealing, specifically in areas that MAY leak (and not WILL leak). While not the best sealant, its easy use makes up for potentia shortcomings in other areas.

I bought Flex Seal paint to seal the insides of my gutters at the joints and ends and it works great. I was highly impressed by the quality of the material and how easily it covered all of the areas. I no longer have any leaks now and my garage is nice and dry. Believe the hype - it really works!

Product worked great after I let it warm up. We had a cold spell and the FLEX was in my shed. I went to use it, I shook it up and pressed the button. It was liquified, bounced off what I was sealing and splattered. It dawned on me that the FLEX could not mix well with the cold. I set it in the sun (65deg that day), had a cup of coffee, went back and used it again - Perfect. Will definitely reorder.

Good

Le gustó a mi esposa porque le sirve muy bien para los trabajos que realiza

Produto resolveu um problema entre a calha e a parede evitando escorrimento de água da chuva mostrou-se mais eficiente que o veda calha. Esperar para ver a durabilidade do produto sob as intempéries.

Big talks & no performance

La verdad, mejores resultados a los esperados, selló muy bien las grietas que me Quedaron después de instalar techo de madera en la terraza , resiste espectacular