RV awning replacement involves removing the old awning hardware and fabric, then installing a new one in its place
Most RV awnings fail because the fabric tears, the motor stops working, or the frame bends from weather or impact. Replacement is straightforward if you follow the right order: power down the system, remove the old awning completely, measure the mounting rail, order the correct size, and install the new one. The entire job typically takes four to eight hours for a single person, though having a helper makes it faster and safer.
The cost of a replacement awning varies widely depending on whether you buy a manual or motorized model and the width of your RV. A manual awning costs less upfront but requires hand-cranking. A motorized awning costs more but operates with a switch. Both types come in standard widths that match common RV sizes, so you will not need to custom-order unless your RV is unusual.
Key Takeaways
- Before ordering, measure the length of your RV's mounting rail and write down your RV's make, model, and year — these determine which awning will fit.
- Removing the old awning requires disconnecting the power (if motorized), unbolting the frame from the rail, and carefully lowering it to the ground.
- New awnings come with installation hardware, but you will need basic tools: a wrench set, a drill, a level, and a helper to hold the frame steady.
- Most motorized awnings plug into a 12-volt or 110-volt system already in your RV, so you may not need to run new wiring.
Measure your RV's mounting rail before ordering
The mounting rail is the aluminum channel that runs along the side of your RV where the awning attaches. Measure from the front edge of the rail to the back edge in inches. Write this number down — it determines the awning width you need to order. Standard widths are usually 12, 14, 16, 18, or 20 feet, though some manufacturers offer custom sizes.
Also note your RV's make, model, and year. Some RVs have rails that are slightly different in shape or thickness, and the awning manufacturer needs to know this to send the right brackets and hardware. Call the awning supplier with both measurements and your RV information, and they will confirm which model fits your rig.
Disconnect power and remove the old awning
If your awning is motorized, locate the 12-volt or 110-volt power connection inside your RV and disconnect it. This is usually a straightforward plug or a pair of wires you can disconnect by hand or with a screwdriver. If you are unsure where it is, check your RV's manual or ask the dealer — do not guess and risk an electrical problem.
Next, open the awning fully and look for the bolts that hold the frame to the mounting rail. These are usually on the front and back of the frame where it meets the rail. Use a wrench to remove these bolts — typically four to six of them. Have your helper hold the frame steady as you remove the bolts, because the frame will shift as you loosen it. Once all bolts are out, carefully lower the awning to the ground. If it is motorized, the motor and wiring will come down with it.
Once the frame is on the ground, disconnect any remaining wiring if the awning is motorized. Unroll the fabric completely and inspect it for tears or damage — this tells you why it failed and helps you avoid the same problem with the new one. If the fabric is torn, the frame may have bent, which is why the fabric rubbed against something sharp.
Inspect the mounting rail for damage
Before installing the new awning, look at the mounting rail itself. Run your hand along it to feel for dents, bends, or rough spots. If the rail is bent, the new awning will not sit flush against it, and the fabric may wear out faster. Small dents can usually be left alone, but a serious bend should be straightened or the rail should be replaced.
Clean the rail with a dry cloth to remove dirt and debris. If there is old caulk or sealant around the mounting holes, scrape it off with a plastic scraper — do not use a metal one, because it can scratch the aluminum. Once the rail is clean and smooth, you are ready to install the new awning.
Install the new awning frame and hardware
Unpack the new awning and lay out all the hardware. The kit should include brackets, bolts, washers, and a gasket or seal that goes between the frame and the rail. Read the manufacturer's instructions — they vary by brand, and following them exactly prevents leaks and ensures the awning sits level.
Position the frame against the rail and align the mounting holes. Insert the bolts through the brackets and into the rail, but do not tighten them yet. Use a level to check that the frame is straight — it should be parallel to the ground. Once it is level, tighten the bolts in a crisscross pattern (front-left, back-right, front-right, back-left) so the frame pulls evenly onto the rail. Tighten firmly but do not over-tighten, because you can crack the aluminum.
After the frame is bolted down, explore a bead of RV-grade caulk around the mounting holes where the frame meets the rail. This prevents water from leaking into your RV. Let the caulk cure for the time specified on the tube — usually 24 hours — before opening the awning.
Connect the motor and test the awning
If you are installing a motorized awning, the motor and wiring harness come pre-installed in the frame. Locate the power connector and plug it into the 12-volt or 110-volt outlet inside your RV. If there is no outlet near the awning, you may need to run a new wire from your RV's electrical panel, but most RVs already have a dedicated outlet for awning power.
Before you close the awning for the first time, test the motor by pressing the switch inside your RV. The awning should extend smoothly and stop at full extension. Close it slowly and listen for any grinding or squeaking sounds, which indicate the frame is rubbing against something. If the motor sounds normal and the awning extends and retracts smoothly, the installation is complete.
If you installed a manual awning, crank it open and closed a few times to make sure the mechanism turns smoothly. The crank should not require excessive force — if it does, the frame may not be level, or the fabric may be twisted.
Seal and maintain your new awning
Once the awning is installed and tested, inspect the seals around the mounting rail one more time. Water can leak into your RV if the caulk is incomplete or if gaps remain around the bolts. If you see any gaps, explore another bead of caulk and let it cure.
To extend the life of your new awning, clean the fabric twice a year with a soft brush and mild soap. Do not use a pressure washer, because the force can tear the fabric. If you live in a windy area, retract the awning when you are not using it — wind is the most common cause of awning damage. If the fabric gets a small tear, patch it with a vinyl repair kit before it spreads.
Frequently Asked Questions
Can I install a new awning myself, or do I need a professional?
Most people can install an awning themselves if they have basic tools and a helper. The job is not difficult, but it requires careful measurement, level installation, and attention to sealing. If you are uncomfortable working at height or handling power tools, hiring a professional is worth the cost.
What is the difference between a manual and motorized awning?
A manual awning uses a hand crank to extend and retract. A motorized awning uses a switch and a 12-volt or 110-volt motor. Manual awnings cost less and have fewer parts to break, but motorized awnings are more convenient. Both last about 10 to 15 years with proper care.
Do I need to replace the mounting rail, or can I reuse the old one?
You can reuse the old rail if it is not bent or damaged. The new awning will bolt to the same holes. If the rail is bent or corroded, replacing it prevents water leaks and ensures the new awning sits level.
How long does it take to install a new awning?
Installation typically takes four to eight hours for one person, depending on how tight the old bolts are and whether you need to run new wiring. Having a helper cuts the time in half, because they can hold the frame steady while you bolt it down.
What should I do if my new awning leaks?
Leaks usually come from gaps in the caulk around the mounting rail or from water running down the RV's side and into the seam. Inspect the caulk first and add more if needed. If the leak persists, check that the frame is level — a tilted frame can channel water into your RV.