Frequently Asked Questions (FAQs)2024-02-13T11:52:21-05:00

Frequently Asked Questions (FAQs)

How long will Gentoo last?2024-02-06T09:57:36-05:00

Longevity of the Gentoo coating will vary based on environmental factors, abrasion, chemical contact, etc.

The performance of Gentoo is dependent on the quality of the application of the Gentoo to the surface or substrate (particularly the quality of the adhesion of the Gentoo), the desired performance results (whether it is an easy-cleaning application or an anti-corrosion application), and, if outdoors, the presence of UV stabilizer in the substrate.

For indoor applications (whether it is for corrosion protection or easy-cleaning), Gentoo could last for years before reapplication.

For outdoor applications requiring corrosion protection, Gentoo should last for two or more years without reapplication.

Longevity of outdoor easy-cleaning applications will depend on many factors. After outdoor exposure, it has been observed that the sliding angle of liquids will increase over time, but the coating can still be effective. If the substrate being coated with Gentoo contains a UV inhibitor, the Gentoo could last several years without reapplication, but if the substrate does not contain a UV inhibitor, the Gentoo may only last one or two months, depending on the UV intensity and the abrasion present in the environment of the coating.  Testing Gentoo in your specific application is required to determine if it meets the requirements of the application.

Can Gentoo be applied to electronics to protect them from moisture, liquids, and corrosion?2020-06-15T10:39:16-04:00

Yes, Gentoo can be successful in these types of applications.  Testing prior to adoption is recommended.  

Can Gentoo be used primarily as a top-coat?2020-04-07T17:07:09-04:00

Gentoo makes a great top coat – it has been coated on bare metal (aluminum, steel, stainless steel, etc.), on plating (Cd, Zn-Ni), and on top of current primer/top coats. The coating thickness is normally 4-6 microns, much thinner than a typical paint.

Is Gentoo capable of preventing corrosion?2020-04-07T17:05:52-04:00

Gentoo is an excellent anti-corrosion coating. Gentoo’s dense structure provides a high physical barrier to electrolytes that cause corrosion and an insulating electronic barrier for galvanic corrosion. For best results, a paint or another protective coating should be applied to the substrate, and then Gentoo should be applied when the paint or other coating is still “green” (tack-free but still has reactive groups available to help to bond). Gentoo hydrophobic coating can also be applied to a paint or other coating after it has dried, but surface roughening (if acceptable) is recommended to promote adhesion. Gentoo can also be applied directly to a substrate. In this case, surface roughening (if acceptable) and/or other surface preparation methods are recommended to promote adhesion.

How much weight does Gentoo add when applied?2020-04-07T17:05:00-04:00

The estimated weight of Gentoo is about 0.85 grams per square foot (after full hydrolysis and full curing) at 5-micron thickness. This equates to 0.00187 lbs/sq foot.

Is Gentoo fingerprint or smudge resistant?2020-04-07T17:04:40-04:00

It has not been extensively tested, but its repellency does provide it some resistance.  It is recommended you test this performance feature of Gentoo for your own specific application to determine its applicability.

How well does Gentoo stand up to acid/bases?2020-04-07T17:04:05-04:00

Gentoo does not hold up well with long exposure to very low pH (acidic, less than pH of 3) or very high pH (alkaline, greater than pH of 11) fluids.

How chemically resistant is Gentoo?2020-04-07T17:03:41-04:00

Gentoo maintains hydrophobicity after being challenged with a wide range of solvents including mild soap, salt water, isopropyl alcohol (IPA), naphtha, some acids, heptane, jet fuel, deicing fluid, hydraulic fluid, lubricants, and others.

Is Gentoo electrically conductive?2020-04-07T17:03:20-04:00

No, Gentoo is not electrically conductive.  It would be considered an electrical insulator.

What type of finish does Gentoo have?2024-02-06T09:58:32-05:00

Gentoo has a glossy finish.

Is Gentoo slippery?2020-04-07T17:02:36-04:00

Gentoo is not slippery on its own.  It is rubbery and may cause a surface to have a higher coefficient of friction than it did before Gentoo was applied.

Is corrosion resistance correlated directly to the thickness of the coating?2024-02-06T09:58:04-05:00

There has not been much testing done showing corrosion resistance versus thickness of Gentoo, as it is difficult to build the thickness of Gentoo (versus a paint that can be built up over itself to achieve a targeted thickness). However, even a thin coating 4-8 microns) of Gentoo will help to prevent corrosion, since it is hydrophobic, and it is insulating and acts as a barrier. Because it is hydrophobic, it will shed water and water-based substances more easily than other surfaces. Because it is insulating, it will inhibit the flow of electricity to the substrate, which slows the corrosion process. Because it acts as a barrier, many liquids that may remain on the surface will be physically separated from the substrate.

Why is the coating called Gentoo?2020-04-07T16:42:29-04:00

It is named after an Antarctic species of penguin that repels water and oil off its feathered coat. It is NOT short for “generation two”, as some have guessed.

Is Gentoo oleophobic and hydrophobic?2020-04-07T16:59:10-04:00

Yes. Gentoo maintains performance after being challenged with a wide range of solvents including mild soap, salt water, isopropyl alcohol (IPA), naphtha, some acids, heptane, jet fuel, deicing fluid, hydraulic fluid, lubricants, and others.  Gentoo does not hold up well with long exposure to very low pH (acidic, less than pH of 3) or very high pH (alkaline, greater than pH of 11) fluids.  It is advised to test Gentoo with your specific chemical application prior to adoption.

Is Gentoo transparent?2020-04-07T16:58:46-04:00

Yes, Gentoo is transparent and it retains its transparency even with mild abrasion.

How durable and abrasion-resistant is the coating?2024-02-06T14:47:33-05:00

Gentoo is very durable and abrasion resistant. The ASTM D 3363 pencil hardness of Gentoo applied to hard surfaces is 9H.  Abrasion data can be found here and on

Can Gentoo be decanted or divided into smaller containers?2020-04-07T16:51:26-04:00

It is not recommended that Gentoo is divided into smaller containers.  Gentoo is moisture sensitive and must be repackaged using a carefully controlled process.  The mixing process and container choice will also affect the quality of the Gentoo.  It is recommended that the appropriately sized set of Gentoo is ordered for the specific application.  The use of quart kits is recommended for initial testing.

What is the shelf life of Gentoo?2024-04-29T15:15:39-04:00

The shelf life of Gentoo is three years when stored at 75 °F (24 °C).  Storage at higher temperatures will shorten the shelf life.

What is the storage temperature for Gentoo?2020-04-07T16:50:41-04:00

Gentoo should be stored between 40°F and 115°F (4°C and 40°C).

What is the coverage of Gentoo?2023-04-26T14:11:20-04:00

In the following statements, “Gentoo” alone refers to Gentoo Part A combined with Gentoo Part B (in equal parts by weight, per the instructions and technical data sheet). Gentoo Part A and Gentoo Part B are filled by weight, not by volume.

The following coverage estimates assume no waste: one gallon (3.8 L) of Gentoo covers approximately 665 ft² (61.8 m²). A complete “quart kit” contains 61 fl oz (1.8 L): this covers 316 ft² (29.4 m²). A complete “5-gal set” contains 9.5 gal (36 L): this covers 6,330 ft² (588 m²).

There are different ways to apply Gentoo. Depending on which method is chosen, your coverage and waste may vary. Collecting, re-using (and re-filtering) will help achieve maximum coverage and reduce waste.

Can the Outdoor / UV life of Gentoo be improved?2020-04-07T16:48:53-04:00

For the longest lasting outdoor performance, apply Gentoo over surfaces that contain a UV inhibitor.

How can Gentoo be removed?2024-02-06T09:50:52-05:00

Gentoo hydrophobic coating is very durable, so removing it can be difficult. In some cases, Gentoo can be removed using abrasive materials such as heavy-duty Scotch Brite™ (which contains aluminum oxide), sandpaper, or blasting.  Pressure washing may also remove Gentoo, under certain circumstances.  Another method is to use a high pH/solvent mixture, as described below.

For small items, including glassware and lab tools, a chemical solution of 100% pure potassium hydroxide with 99% isopropyl alcohol may also be used. A recommended ratio is 1 lb (0.45 kg) of potassium hydroxide to 2-3 gallons (7.5-11 liters) of isopropyl alcohol. Items can be soaked in this highly reactive solution for several days in order to begin to remove the coating.  A final wash with soap and water, and then water, is advised.

Note: These removal methods may damage the substrate and/or coating beneath the Gentoo coating. Appropriate safety precautions, including the use of proper personal protective equipment, must be taken when removing Gentoo from a surface.

What is the best way to determine if Gentoo is right for my application?2020-04-07T16:43:24-04:00

After learning to apply Gentoo to standard surfaces, we recommend that Gentoo is applied to a small area(s) of the test surface for initial application-specific testing.  Depending on the substrate, different surface preparation and curing methods could be tried, to see if they make a difference in the application-specific performance of Gentoo.  See application instructions for more information.

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