Not all canvas is created equal. When investing in custom marine canvas, here’s how to tell if you’re getting quality that lasts.

Introduction

Choosing the right material for boat enclosures, windows, or isinglass replacements is crucial for durability, visibility, and long-term enjoyment on the water. This post dives into a head-to-head comparison between two popular options: StrataGlass (a premium acrylic-based marine glazing) and Makrolon (a polycarbonate sheet often used in marine applications). Both are designed to withstand harsh marine environments, but they differ in clarity, UV resistance, scratch resistance, and cost. Whether you're upgrading a yacht enclosure or fixing a dinghy cover, understanding these differences can save you time and money.

Key Features of StrataGlass

StrataGlass is engineered specifically for marine use, offering:

• Superior Optical Clarity: 92% light transmission for crystal-clear views, reducing distortion even after years of exposure.

• UV Resistance: Proprietary coatings block 99% of UV rays, preventing yellowing or hazing—ideal for sunny boating climates.

• Abrasion Resistance: Multi-layer scratch-resistant surface that's 10x harder than standard acrylic, resisting sand, salt, and cleaning chemicals.

• Flexibility and Installation: Available in rolls up to 60" wide; easy to sew into enclosures or adhere with marine-grade tapes.

• Warranty: Lifetime guarantee against yellowing, cracking, and delamination.

It's popular among high-end boat manufacturers for its "like-glass" appearance without the weight or breakage risk.

Key Features of Makrolon

Makrolon, from Covestro, is a tough polycarbonate known for impact strength:

• Impact Resistance: 200x stronger than glass and 10x tougher than acrylic—perfect for rough seas or accidental impacts.

• Light Transmission: Around 89%, slightly less clear than StrataGlass but still excellent for most visibility needs.

• UV Protection: Standard versions offer good resistance, but marine-grade variants include coatings to combat degradation.

• Versatility: Lightweight (half the weight of glass) and formable when heated, making it suitable for curved windows or custom shapes.

• Availability: Comes in sheets or films; easier to source from general suppliers.

It's a go-to for budget-conscious boaters or applications needing extreme toughness, like workboats.

Pros and Cons Comparison

AspectStrataGlassMakrolonClarityPros: Exceptional, stays clear longest. Cons: Can scratch if not cleaned properly.Pros: Good initial clarity. Cons: Prone to scratching and hazing over time.DurabilityPros: Excellent UV and chemical resistance. Cons: Less impact-resistant than polycarbonate.Pros: Unmatched impact strength. Cons: Yellows faster without premium coatings.MaintenancePros: Easy to clean with mild soap; self-healing scratches. Cons: Requires specific cleaners to avoid damage.Pros: Tough against punctures. Cons: Scratches easily; needs polishing kits.Weight & FlexibilityPros: Lightweight and pliable for enclosures. Cons: Not ideal for rigid, high-impact panels.Pros: Very flexible when thin. Cons: Heavier in thicker gauges.CostHigher upfront ($20–$40 per sq ft) but longer lifespan reduces replacements.More affordable ($10–$25 per sq ft), great for DIY projects.

Performance in Real-World Tests

Based on independent marine tests (e.g., abrasion cycles and UV exposure simulations):

• Scratch Test: StrataGlass endured 1,000+ cycles with minimal marring, while Makrolon showed visible scratches after 200.

• UV Aging: After 2,000 hours of simulated sun, StrataGlass retained 95% clarity; Makrolon dropped to 80% without enhanced coatings.

• Salt Spray: Both held up well, but StrataGlass's coatings prevented fogging better in humid conditions. Expert tip: For saltwater boats, pair either with anti-fog treatments for optimal performance.

Pricing and Value

• StrataGlass: Premium pricing reflects its marine-specific engineering—expect $300–$600 for a standard 10x10 ft enclosure kit. Best value for luxury or frequent-use boats.

• Makrolon: Budget-friendly, with kits starting at $150. Ideal if impact protection trumps optics, or for seasonal use.

Final Recommendation

If clarity and low maintenance are your priorities (e.g., for sportfishing or coastal cruising), go with StrataGlass—it's the gold standard for enclosures that look new for a decade. Choose Makrolon if you need bulletproof impact resistance on a budget (think offshore racing or family boats with kids/pets). Ultimately, assess your boating style: sunny days favor StrataGlass, rough waters lean Makrolon. Consult a marine fabricator for custom fits, and always opt for UV-stabilized versions to maximize longevity. Happy boating!