Aussio Mushroom-Style RV Roof Vent Caps 2-Pack — White, Universal Fit with Putty Tape & Screws, Weather-Resistant Plastic

The Aussio 2-pack mushroom-style RV roof vent caps are universal replacement ventilator covers, supplied with bases, putty tape and screws to restore roof plumbing vents quickly and securely.

If your camper, trailer or motorhome vent cap is cracked, missing, or allowing leaks, these Aussio mushroom vent caps offer a straightforward replacement that restores ventilation and weather protection. Made of durable plastic and sized to fit most standard RV roof pipes, each pack includes two complete vent cap assemblies with mounting bases, silicone-friendly putty tape and screws so you can complete the repair in a single visit to your roof.

What sizes and roof pipes do these vent caps fit?

These mushroom vent caps are designed to accommodate the most common RV vent pipe diameters and base openings. Their dimensions help ensure a snug fit over typical vent stacks used in campers and trailers.

• Inner cap diameter: 3.8" for proper pipe clearance.
• Base (flange) diameter: 5.3" to cover worn or oversized roof cutouts.
• Height: 3" tall to shed water while allowing airflow.
• Compatible with vent pipes roughly 1" to 2-3/8" in diameter.

How do I install the Aussio mushroom vent cap on my RV roof?

Installation is intended for DIYers and is straightforward: prepare the flange area, apply the included putty tape, fasten the base with screws and snap the cap on. Using a bead of exterior silicone caulk around the flange is recommended to reinforce the waterproof seal.

• Clean and dry the mounting surface before applying putty tape.
• Center the base, drive through the four screw holes with supplied screws.
• Apply exterior silicone around the flange edge for long-term protection.
• Snap the mushroom cap onto the base; it locks into place for quick completion.

Will these vent caps withstand weather and temperature changes?

The Aussio vent caps are molded from weather-resistant plastic that resists corrosion and moisture, making them suitable for typical outdoor exposure on RV roofs. They are non-metallic, so they won’t corrode like metal parts and maintain shape under sun and rain when properly sealed.

• High-quality plastic resists rust and corrosion from road salt and moisture.
• Low-profile, mushroom shape sheds rain and reduces direct water entry.
• Durable under sun exposure when installed with recommended sealing.
• Two-cap pack provides a spare or allows servicing both front and rear vents.

How does this replacement improve ventilation and interior comfort?

Replacing a damaged or missing vent cap restores passive airflow and helps release trapped heat and moisture from the RV’s interior. While not an active fan, the mushroom cap prevents rain ingress while allowing natural ventilation to work more effectively.

• Allows stale air and humidity to escape, helping reduce condensation.
• Protects interior from rain and pests while still permitting airflow.
• Restores proper function without major roof modification.
• Two included caps let you address multiple vents or keep a spare on hand.

Who is this for: The Aussio 2-pack mushroom roof vent caps are a practical, budget-friendly solution for RV owners, camper DIYers, and maintenance crews who need a reliable replacement for standard mushroom-style plumbing and attic vents. If you want an easy-to-install, weather-resistant vent cover that fits most common pipe diameters and includes the mounting supplies to finish the job, this kit is built for routine roof repairs and preventive replacement on trailers, motorhomes, pop-ups and enclosed cargo trailers.