Independent Testing Data & Performance Comparisons
See a comparison of exterior coating options commonly considered in Florida, using published testing data where available.
This guide summarizes available comparison points, including published testing data where available and key questions buyers should ask each provider, including Rhino Shield, TEX-COTE Coolwall, Home Shield Coating, Sherwin-Williams Loxon XP, and standard premium paints.
We’ve simplified complex technical data, focusing on factors many Florida homeowners consider important: durability, flexibility, breathability, heat reflection, and resistance to mold, storms, and peeling. Our goal is to help you understand the key differences in testing, positioning, and use case, empowering you to make an informed choice that supports a more informed long-term decision.
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Comparison chart
Click the image to view the chart below:
Deep dive pros and cons
Rhino Shield Florida
Rhino Shield is presented as a ceramic-based exterior coating intended for climates like Florida’s. It is designed to flex with surface movement, which may help reduce cracking, has published vapor permeance data intended to allow moisture vapor to pass through the coating, and is backed by extensive third-party testing.
- Key metrics: Flex 538–550%; Adhesion 533–567 psi; Breathability 15.1 perms
- Verified performance: SRI 105–107; Mold: Pass; Wind-Driven Rain: Pass; Salt Spray: Pass; Fire: Class A (Smoke 0); R-Value: 6.9 (per report)
- May be a strong fit for coastal or storm-prone areas; homeowners prioritizing a longer maintenance cycle.
- Things to note: Higher upfront cost; more involved installation; changing colors later takes more effort
TEX-COTE Coolwall
TEX-COTE Coolwall focuses on keeping surfaces cooler and colors more stable under Florida sun. It’s known for infrared heat reflectivity and fade resistance and has an established presence in Florida through dealer networks. As with many dealer-installed systems, buyers should review installer qualifications, scope, and warranty details carefully.
- Focus: IR heat reflectivity and fade resistance
- Notes: SRI marketed; specific ASTM values not listed in the comparison chart
- Ideal for: Heat/fade concerns with a vetted local dealer
- Watchouts: Fewer published ASTM metrics in the chart; results can depend on installer quality
Sherwin-Williams Loxon XP
Loxon XP is an elastomeric coating commonly used on stucco. It’s very breathable (often considered for humid climates because of its breathability) and has verified storm resistance, making it a common option in some repaint situations when you want good performance without the premium cost of ceramic coatings.
- Key metrics: Flex 335%; Breathability 18 perms; Adhesion 375 psi; Wind-Driven Rain: Pass
- Ideal for: Breathable elastomeric repaint on stucco at a lower upfront cost
- Watchouts: Service life may be shorter than some long-term coating systems, depending on product, prep, and exposure; lower flexibility/adhesion vs. Rhino Shield in the chart
SW SuperPaint / Emerald Acrylic
These are conventional premium paints with broad color choices and easy availability. They’re lower upfront cost but may require more frequent repainting in Florida, depending on product quality, exposure, and maintenance.
- Notes: Conventional paints; no ASTM data in the chart for these metrics; normal repaint cycles
- Ideal for: Budget or aesthetics-first repaint; frequent color changes
- Watchouts: Normal repaint cycles under Florida UV/salt/humidity; a more conventional paint option rather than a specialty coating system.
Home Shield Coating
Home Shield markets itself as a Florida-based ‘permanent’ coating solution that emphasizes surface preparation and strong warranties. It’s a local alternative an option buyers may want to compare if you verify the technical proof behind the claims.
- Focus: Two-part “permanent” coating; strong prep + warranty messaging
- Notes: No specific ASTM numbers listed in the comparison chart
- Ideal for: Florida-based alternative—request and review full third-party lab data
- Watchouts: Confirm what the warranty covers (materials vs. labor) and ask for test reports
Due diligence checklist
Before making a final decision, It’s important to compare both the contractor and the product carefully. This checklist provides key questions and data points to request from every bidder, so you can make a more informed decision.
FAQ's
When considering multiple options to paint and coat your home there are many questions that homeowners have. Remove entirely; replace with “Here are common questions homeowners ask when comparing coatings. Check out the most common questions asked:
1) What is the best exterior coating for Florida homes?
The best exterior coating for Florida depends on your priorities. For long-term, low‑maintenance protection in heat, humidity, storms, and coastal salt air, Rhino Shield may appeal to homeowners seeking a longer-term coating system. For breathable stucco repaints at a lower upfront cost, Sherwin‑Williams Loxon XP is a strong elastomeric option. Standard premium paints (e.g., SW SuperPaint/Emerald) are budget-friendly but require more frequent repainting in Florida’s UV and humidity.
2) Rhino Shield vs. TEX‑COTE Coolwall: Which is better in Florida?
Rhino Shield Florida emphasizes all‑around durability (flexibility, adhesion, breathability, mold resistance, storm and salt performance) with extensive ASTM testing, while TEX‑COTE Coolwall focuses on heat reflection and fade resistance. If your priority is cooler walls, Coolwall can be compelling—just ask for specific ASTM data (SRI, elongation, adhesion, perms). For comprehensive, data‑backed protection in coastal and storm zones, Rhino Shield often stands out.
3) Is elastomeric paint like Sherwin‑Williams Loxon XP good for Florida stucco?
Yes. Loxon XP is a breathable elastomeric that performs well on Florida stucco, helping moisture escape and resisting wind‑driven rain. It’s widely available and cost‑effective compared to ceramic “permanent” coatings. However, expect a shorter lifecycle than multi‑decade systems like Rhino Shield, meaning more frequent repainting over time.
4) How much do “permanent” exterior coatings cost in Florida and how long do they last?
Ceramic and “permanent” exterior coatings typically cost more upfront than standard paint but aim for multi‑decade performance with minimal maintenance. Many Florida homeowners justify the investment by avoiding multiple repaint cycles (often every 3–7 years with standard paint). Always compare total cost of ownership over 10–20 years, not just day‑one pricing.
5) What tests and warranties should I ask for before choosing a Florida exterior coating?
Request third‑party ASTM reports to verify key claims: D2370/D638 (flexibility/tensile), D1653 (breathability/perms), D4541 (adhesion), D5590 (mold/algae), D6904 (wind‑driven rain), B117 (salt spray), E84 (fire), and E1980 (SRI/reflectivity). Confirm wet/dry mil thickness, prep steps for your substrate, and warranty details (materials vs. labor, transferability, who services the warranty if a dealer closes).
Reviewed By: Ryan Adams | Owner of Rhino Shield of Florida
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Since 2001, the Rhino Shield team has been dedicated to developing coatings designed for long-term exterior performance. This includes ongoing research, product innovation, and testing.
Independent ASTM testing is the bedrock of our success. Utilizing top ASTM laboratories and test facilities ensures both quality and performance.