Replacing Cracked Roof Vent On Camper: Quick Fix Or Wait?

If you're enjoying a vacation in your camper van and the roof vent suddenly breaks, you'll need to act fast. A cracked roof vent can cause rain to seep into your RV, so you'll need to replace it quickly. The good news is that replacing an RV roof vent cover is a simple DIY project that can be done in less than an hour. Here's a quick overview of the steps to replace an RV roof vent cover, so you know what to do in an emergency.

Choosing the right replacement vent

When choosing a replacement vent for your camper, there are a few key considerations to keep in mind. Firstly, it is important to select a vent that is compatible with your current vent setup. This includes considering the size, hinge style, and colour of the replacement vent cover. Measuring the roof vent opening is crucial to ensure the new vent fits securely. The standard vent opening size is 14-1/4" x 14-1/4", but it is recommended to verify this measurement for your specific camper.

Another factor to consider is the hinge style of the vent cover. Most hinges fall into one of three categories: 3-point, 4-point, or continuous style. Selecting a replacement cover with the same hinge style as your original cover ensures a proper fit. Additionally, checking the manufacturer's name on your current vent can provide guidance, although it's important to note that some manufacturers may have altered their designs over time.

The material of the vent cover is also an important choice. Metal lids are highly durable and offer a flat, low profile. They are less susceptible to hail damage or sun erosion, and they block out light when closed. On the other hand, plastic lids typically have a dome shape, which facilitates water runoff and prevents ice damming. Plastic lids are available in white or tinted smoke colours, allowing some light to filter through when the vent is closed. However, they are more vulnerable to damage from the elements.

If your previous vent included a fan, it is important to ensure that the replacement vent also has one. Additionally, check that the power source of the new vent matches that of the old one, as most use 12V DC power, while some operate on 110V AC. If you're looking to upgrade, you can consider adding a fan by running wires to power the motor. Some advanced options include remote control functionality and automatic temperature-based fan operation.

Removing the old vent

Before you can install a new roof vent, you must first remove the old one. This process will differ depending on whether your camper has a fan or not. If your camper has a fan, you will need to be careful not to damage the wires when removing the old vent.

First, gather your tools: a screwdriver or nut driver, a putty knife, and a caulk gun (if your sealant requires one for application). If your camper has a fan, you will also need wire cutters and wire nuts.

Next, remove the old trim ring or garnish piece from inside the camper. You may need to remove an interior trim piece or garnish to expose the edges of the vent opening. Now, on the roof, carefully peel off any old sealant around the vent. Be careful not to scratch the roof or tear the roof membrane. Take off the vent and, if it is powered, make sure the power is off before clipping the wires, leaving sufficient wire length to make new connections. Scrape off any residual sealant.

Now you should be able to lift out the old vent. If your vent has a fan, remove it carefully so as not to damage the wires. Pay attention to how the wires are placed and which colours are attached where, so that you can install the new vent properly.

Preparing the new vent for installation

Now that you've removed the old vent, it's time to get the new one ready for installation. Here are the steps you need to follow:

Firstly, if your new vent has a fan, you'll want to route the power supply and ground wires first. Make sure to connect the wires to the vent motor according to the diagram provided with your vent.

Next, apply butyl tape or sealant to the trim ring of the new vent and press it into place, creating a seal. Make sure the vent is facing the proper direction—check your installation instructions for details. Ensure that all screw holes are completely covered.

Now, screw the vent into place using the included mounting screws. Again, refer to the instructions to ensure you're using the correct type and size of screws.

Once the vent is screwed in, apply a self-levelling sealant over the screws. This will ensure a watertight seal.

If your vent has a fan, carefully mount it, tucking the wires inside the hole you drilled. Screw the fan into place.

Finally, test the functions of your new vent, including the open/close function and the fan (if applicable). Ensure that the vent cover can open and close properly and adjust the lid arms as needed.

Installing the new vent

Now that you've chosen your new vent, it's time to install it. Here's a step-by-step guide:

Step 1: Prepare the new vent for installation

Apply putty tape along the screw holes that will be facing the roof of your camper. This will ensure extra strength for holding the vent in place. Make sure to remove the wax paper cover from the putty tape before screwing in the vent. If your vent has wires, strip the wire casing to expose the copper strands and connect them to the wires from the old vent. Twist them together and finish with a wire nut for safety.

Step 2: Align the vent and screw it in

Check that the new vent is facing the right way and that the screw holes line up with the holes in your roof. If the holes are slightly off, you can drill new ones, but remember to fill the old ones with putty tape and sealant to prevent leaks. Screw in the new vent using a screwdriver or a drill with a Philips drill bit.

Step 3: Seal the vent with lap sealant

Apply Dicor Lap Sealant or a similar product around the outer edges of the new vent to cover the screws and ensure a secure seal. Cut the nozzle to the right size and spray along the edges. This will ensure that your new vent stays in place and doesn't leak. The sealant should take a few hours to set completely.

Step 4: Reinstall interior components (if applicable)

If you removed any interior components such as trim, a crank handle, or a screen, now is the time to reinstall them. Make sure to line up the crank arm with the track and slide it into place before reattaching the trim.

And that's it! You've successfully replaced your cracked roof vent. Enjoy your fresh air and leak-free camper!

Sealing the new vent

Now that you've replaced your cracked camper roof vent, you'll want to seal it to ensure it stays in place and doesn't leak. Here's a step-by-step guide to sealing your new camper roof vent:

• Clean the Surface: Before applying any sealant, it's important to clean the surface of the roof and the new vent. Use a putty knife or a similar tool to remove any old sealant or debris from the area. Be careful not to scratch the roof or tear the roof membrane during this process.
• Apply Butyl Tape or Sealant: Butyl tape or sealant will act as a primary seal for your new vent. Apply it to the trim ring of the vent and press it into place, creating a tight seal. Make sure to follow the manufacturer's instructions for the specific sealant you are using.
• Insert the Vent: With the butyl tape or sealant in place, insert the new vent into the opening. Make sure it's facing the correct direction, as per the installation instructions. Check that all screw holes are covered, and use the included mounting screws to secure the vent in place.
• Apply Self-Leveling Sealant: For added protection, apply a self-leveling sealant over the screws and around the outer edges of the vent. Cut the nozzle to the appropriate size and begin applying the sealant in a thin, even layer. You can use a self-leveling lap sealant, which will spread and level out on its own, or a standard sealant that you can smooth out manually.
• Let it Dry: Once you've applied the sealant, give it enough time to dry and cure completely. Follow the manufacturer's instructions for the specific sealant you're using, but typically, it should take a few hours to set fully.
• Final Inspection: After the sealant has dried, do a final inspection to ensure that your new vent is secure and properly sealed. Check for any signs of leaks or gaps in the sealant. If needed, you can apply an additional layer of sealant for extra protection.

By following these steps, you'll be able to seal your new camper roof vent effectively, ensuring that it stays in place and protects your camper from the elements. Remember to work carefully and refer to the manufacturer's instructions for any specific details related to your vent model.

Frequently asked questions