RV Skylight Replacement Cover 18in x 26in - Durable Polycarbonate Dome

In this review of the RV Skylight Replacement Cover, the bottom line is simple: it is a budget-friendly, easy-to-install outer dome best suited for RV owners who need a quick, direct replacement for a 14in x 22in inner opening and an 18in x 26in flange. The reviewer found the cover lets in useful natural light while keeping out leaves and rain, and the pre-drilled holes make the DIY swap straightforward. For those who want heavy-duty, long-lived glazing, there are caveats about material thickness and long-term durability, but the cover succeeds as an affordable, effective fix.

Key Features

• Compatibility: Fits most camper and food truck skylight openings with a 14in x 22in inner dome and an 18in x 26in flange for a simple replacement process.
• Material: Made from polycarbonate so it resists wind and rain and offers higher impact strength than ordinary plastics for outdoor use.
• UV resistance: The UV resistant construction helps reduce discoloration and prolongs usable life in sun-exposed roof locations.
• Light delivery: Designed to admit natural light into the RV or shower area, brightening interior spaces without requiring electric lighting during the day.
• Weather protection: The dome blocks leaves, branches and rainwater from entering the RV, helping to keep the interior clean and dry.
• Simple installation: Ships with pre-drilled holes so it screws into place quickly using basic tools, allowing a fast DIY replacement.

Who It's For

This replacement cover is aimed at DIY RV owners, food truck operators and motorhome travelers who need a direct, inexpensive exterior dome replacement for a standard shower or skylight opening and value quick installation. It is particularly useful when the existing dome is cracked or yellowed and a same-size swap will restore daylight and weather protection.

Shoppers seeking a premium, thick-gauge or multi-year guaranteed glazing solution should look elsewhere; some buyers report the material can be thin and mixed durability results suggest it is best for moderate use or as an economical spare rather than a lifetime upgrade.

Pros & Cons

Pros

• Easy to install with pre-drilled holes and straightforward screw attachment.
• Lets natural light into the RV, improving interior brightness during the day.
• Polycarbonate construction provides impact resistance and UV protection compared with basic acrylic covers.
• Designed to block leaves and rainwater, keeping the interior cleaner.

Cons

• Material thickness is mixed in customer feedback and some report brittleness or reduced lifespan under heavy use.
• Not marketed as a premium, heavy-gauge dome, so those needing maximum durability may prefer a thicker specification.

Specifications

Our Verdict

The Kojem 18in x 26in skylight cover is a sensible, low-cost replacement for standard 14in x 22in inner openings that delivers immediate benefits in light and weather protection and is very easy to install. It represents good value for owners who need a fast repair or modest upgrade, but those after the thickest, longest-lasting dome should consider heavier-duty alternatives.

Frequently Asked Questions

Will this cover fit my RV opening?
It fits openings where the inner dome dimension is 14in x 22in and the flange is 18in x 26in; measure your existing unit to confirm.

Is the dome resistant to UV and yellowing?
Yes, the polycarbonate is UV resistant to reduce discoloration, though long-term performance can vary with sun exposure.

Can I install it myself?
Yes, the cover includes pre-drilled holes and installs with basic tools and screws in minutes.