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Rust-Oleum 301903 10 Year Elastomeric Roof Coating

Curated from 62 real Reddit conversations

Refreshed on: March 30, 2025

Product Image 1
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Rust-Oleum 301903 10 Year Elastomeric Roof Coating

Brand: Rust-Oleum
Price: $45
Snoop Score:
3.6
Sentiment
6.7
Popularity
5.6
Technical
2.3
Buy on Amazon for $45See All Roof Coating Reviews
As an Amazon Associate, I earn from qualifying purchases.

Snoop's Take

The Rust-Oleum 301903 10 Year Elastomeric Roof Coating is a versatile solution designed to provide long-lasting protection for roofs and foundations against moisture penetration. This product forms a durable and weatherproof membrane, making it ideal for keeping structures safe from the elements while offering a degree of insulation. Consumer feedback highlights its excellent waterproofing capabilities, with users noting that, "the coating is wonderful and it makes a weatherproof membrane." Many also appreciate its effectiveness as a primer for metal roofs, stating that "spraying is ideal." However, some users express concerns about the cleanup process, indicating that elastomeric coatings can be challenging to manage post-application. Overall, the Rust-Oleum 301903 Elastomeric Roof Coating is recommended for those seeking a reliable waterproofing solution, especially for metal roofs, despite some cleanup difficulties that may arise.

Not for you? Check out our other rated Roof Coating

It's a fantastic technology, but no, you can't paint over a silicone roof coating.

Positive Feedback

I always recommend against any elastomeric coating, but I’m losing the battle.

Negative Feedback
Product
3.6
Rust-Oleum 301903 10 Year Elastomeric Roof Coating
Buy on Amazon for $45
RV Roof Maintenance
3 / 10
Metal Roofing
4 / 10
Low-Slope Roofs
3 / 10
Commercial & Residential Applications
3 / 10
See how this compares to all Roof Coating

What it does well!

Key strengths users can’t stop talking about.
Excellent waterproofing
“It's a fantastic technology, but no, you can't paint over a silicone roof coating.”➕
“The coating is wonderful and it makes a weatherproof membrane that besides sealing provides a bit of insulation.”➕
Effective use as a primer for metal roofs
“Turned out great. Spraying is ideal.”➕

Where it needs some work!

Areas to watch—feedback on possible improvements.
Difficult to clean up
“I always recommend against any elastomeric coating, but I’m losing the battle.”➕

Compare On All Talked About Dimensions

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GacoFlex GacoRoof White Silicone Roof CoatingGacoFlex GacoRoof White Silicone Roof Coating$101
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Liquid Rubber RV Roof Sealant - 1 GallonLiquid Rubber RV Roof Sealant - 1 Gallon$79
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Rust-Oleum 301993 Roof CoatingRust-Oleum 301993 Roof Coating$150
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EverBond RV Roof Coating - Liquid Rubber SealantEverBond RV Roof Coating - Liquid Rubber Sealant$267
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AMES Maximum Stretch Roof Coating, 1 GallonAMES Maximum Stretch Roof Coating, 1 Gallon$43
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Rust-Oleum 4.75 Gallon Elastomeric Roof CoatingRust-Oleum 4.75 Gallon Elastomeric Roof Coating$95
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Gardner-Gibson Gardner Aluma-Kote Roof CoatingGardner-Gibson Gardner Aluma-Kote Roof Coating$86
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Gardner-Gibson 6125-9-34 Roof CoatingGardner-Gibson 6125-9-34 Roof Coating$27
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Henry HE587372 Roof Coating, 5 GalHenry HE587372 Roof Coating, 5 Gal$163
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BEEST RV Roof Coating White, 32 OzBEEST RV Roof Coating White, 32 Oz$16
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Gardner-Gibson GARDNER-GIBSON 9/30/6025 Series Roof CoatingGardner-Gibson GARDNER-GIBSON 9/30/6025 Series Roof Coating$63
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Countryman Coatings 100% Silicone Roof CoatingCountryman Coatings 100% Silicone Roof Coating$110
5.4
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Gardner-Gibson Sta-Kool 15-Year Turbo-Dri Roof CoatingGardner-Gibson Sta-Kool 15-Year Turbo-Dri Roof Coating$94
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Rubbertop USA RubberTop Roof CoatingRubbertop USA RubberTop Roof Coating$99
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Rust-Oleum 301997 510 Fibered Aluminum Roof CoatingRust-Oleum 301997 510 Fibered Aluminum Roof Coating$125
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Henry HE887HS073 Tropicool Roof Coat, 5 GallonHenry HE887HS073 Tropicool Roof Coat, 5 Gallon$369
4.0
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Rust-Oleum 301999 350 Fibered Black Roof CoatingRust-Oleum 301999 350 Fibered Black Roof Coating$99
4.0
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Rust-Oleum 301903 10 Year Elastomeric Roof CoatingRust-Oleum 301903 10 Year Elastomeric Roof Coating$45
3.6
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BEEST RV Roof Coating Silicone WhiteBEEST RV Roof Coating Silicone White$84
3.3
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Gardner-Gibson GARDNER-GIBSON 6245-GA Series Roof CoatingGardner-Gibson GARDNER-GIBSON 6245-GA Series Roof Coating$96
3.1
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Gardner-Gibson 4.75 Gallon Rubberized SBS Roof CoatingGardner-Gibson 4.75 Gallon Rubberized SBS Roof Coating$78
2.0
DetailsBuy
Gardner-Gibson Gardner Aluma-Kote Roof CoatingGardner-Gibson Gardner Aluma-Kote Roof Coating$31
1.8
DetailsBuy
STUBDL Henry Pro Grade 988 Silicone Roof CoatingSTUBDL Henry Pro Grade 988 Silicone Roof Coating$313
1.6
DetailsBuy

Core Power Plays

The specs and strengths that make it shine.
Discussion about climate relevance.
“As someone who is in a much colder climate and would never have any use for this product...I'm cool with this post.”➕
Mention of ceramic additive for better results
“You can just get white rustoleum and ceramic additive.”➕
“Now the ceramic additive I have not heard of.”➕
Discussion about various paint options for metal roofs
“So my metal roof in Haiti is starting to show rust and I’m wanting to know if I could paint it before it gets worse?”➕
“I second this but you might also look into a urethane with superior UV resistance and color retention.”➕
“I've had success with shercryl hpa on metal roofs.”➕
“Gonna need to multiprimer all that rust.”➕
Mention of a sealer coat for UV protection
“I did use a primer and will use a sealer coat to help fight the uv rays.”➕

Hidden Hero Hacks

Unexpected tricks and side‑door uses you’ll love.
Discussion about using Rust-Oleum for rust prevention
“Are my instincts right? If so, which product do you guys recommend over the other?”➕
“I did 2 or 3 coats, and 2 years later there is no rust.”➕
“The undercoating creates a paintable surface.”➕
“I have noticed, am guessing they will get covered and it will be fine.”➕
Discussion about applying Rust-Oleum to various surfaces
“We'll see how well it sticks.”➕
“Looks great tho!!”➕
“People have been applying it to 1/10 cars for some time without issue, you can gouge it and pull the paint off I guess. lol”➕
“Texture looks good tho”➕
Discussion about using Rust-Oleum for sound deadening in vehicles
“I drive a 2004 Chevy Silverado, so I don’t want to drop a ton of money into it.”➕

Buyer’s Cheat Sheet

What to check before you click ‘Add to Cart.’
Discussion about paint compatibility and application techniques
“It does an excellent job of waterproofing which solves the primary issue.”➕
“I always give elastometic a top coat of exterior paint, as theyre better at dealing with the elements.”➕
Discussion on methods for rust removal before painting
“I've never used Rustoleum rust reformer not sure how to works.”➕
“If you want to save some money a little longer term, a good bet would be to sand off the rust and then paint it.”➕
“It’s nasty stuff but works very well.”➕
Discussion about contacting manufacturers for guidance
“Contact the manufacturer for the correct use of their product.”➕
Engagement on preparation techniques before painting
“Thanks for the response, glad to hear you haven't had any issues.”➕
“You'll be fine as long as you give it a few good coats.”➕
“Did you use any silicone on the joints?”➕
“I Just used some black gasket maker I had leftover from a project.”➕
Discussion about painting techniques for roofs
“My roof has no leaks but it isnt the prettiest so I wasnt sure if it was worth it or not.”➕
“Grizzly Grip? I did it on my ‘98 Coleman Popup with the ABS roof issue and it looks great.”➕
“Thanks I will look into that.”➕
“You can add sand to it for grip/texture too.”➕

Cautionary Callouts

Know the pitfalls before they catch you off guard.
Unexpected engagement about product perception.
“I coated my Arizona roof with silicone.”➕
“I’m just a dude in AZ with $500+ power bills in the summer who is excited about this pain in the ass job I completed by myself.”➕
“Looks good, OP, hope it helps lower your bills.”➕
Discussion about Tropicool's popularity and issues
“Any product with silicone should be avoided.”➕
“I was amazed the number of shades the color changed with a quick wipe.”➕
General interest in project updates
“My concern would be the longevity.”➕
Contradictory advice from professionals about painting rusty roofs
“It can be painted. It won’t last or look particularly great.”➕
Concerns about specific product curing times
“What if it rains before roof coating cures?”➕
“Dry to the touch and full cure are not the same thing even though they are often confused as such.”➕

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