RVGUARD RV Skylight Replacement 18" x 26" White Dome — UV-Blocking, Impact-Resistant with Screws

RVGUARD's 18" x 26" white RV skylight replacement is a UV-blocking, impact-resistant polycarbonate dome that fits standard 14" x 22" roof openings and ships with the M4*25 screws needed for installation.

Replace a cloudy, cracked, or leaking skylight with a durable, easy-to-install RVGUARD unit engineered for long-term clarity and sun protection. Designed to match common RV roof apertures, this replacement skylight balances daylighting with privacy and protects the interior from ultraviolet exposure. The white dome transmits about 40% of light to soften glare while maintaining a bright cabin atmosphere.

Will this skylight fit my RV roof opening?

Yes — the RVGUARD skylight uses an 18" x 26" outer frame that is intended to retrofit the typical 14" x 22" cutout used on most recreational vehicles. The design anticipates standard roof flange dimensions so you can swap out the old dome without custom cutting.

• Outer frame: 18" x 26" dimensions for compatibility with standard openings.
• Inner cutout compatibility: replaces common 14" x 22" roof apertures.
• All mounting hardware: includes M4*25 screws to simplify installation.

How does the white polycarbonate affect interior light and comfort?

The white dome diffuses incoming sunlight, reducing direct glare while preserving a comfortable level of daylight. With about 40% light transmission, it creates a softer ambient light that helps maintain a pleasant interior without making spaces too dim.

• Diffused illumination: reduces harsh sunlight and hotspots.
• Balanced brightness: keeps interior light comfortable during daytime.
• Privacy advantage: opacity helps limit visibility into the RV from outside.

How durable is the polycarbonate dome and how does it handle weather?

Constructed from robust polycarbonate, the skylight resists impacts, flexing, and environmental stress better than many plastics. It blocks 100% of UV rays to protect interior surfaces and is manufactured for long-term resistance to yellowing and degradation.

• Impact-resistant material: engineered to withstand hail and road debris.
• UV protection: 0% UV transmission limits sun damage to interiors.
• Weatherproof lifespan: formulated for extended clarity and anti-aging performance.

What should I know before installing to ensure longevity?

Installation is straightforward when the roof opening and existing flange match standard sizes; included M4*25 screws make the process easier. For long-term performance, avoid acid-based adhesives or sealants that can chemically react with the polycarbonate and compromise the dome.

• Hardware included: M4*25 screws provide a secure mounting option.
• Sealant guidance: use neutral-cure or manufacturer-recommended sealants only.
• Care tips: clean with mild soap and water; avoid abrasive or acidic cleaners.

Who is this for? This RVGUARD 18" x 26" skylight is aimed at RV owners, fleet managers, and DIY maintenance enthusiasts seeking a reliable replacement part that improves light quality and shields interiors from UV damage. It's especially useful for those replacing faded or damaged domes on standard-sized openings who want a practical, pre-drilled solution that includes mounting screws and long-lasting polycarbonate construction.