ServiceNomad RV · Knowledge
RV Awning Sagging or Crooked
An RV awning that sags in the middle or rolls unevenly is usually suffering from lost spring tension, arm misalignment, or worn hardware. Awnings rely on torsion springs inside the roller tube to maintain tension and proper fabric roll-up. Over time, these springs weaken, or the arms lose alignment, causing the fabric to sag or roll crookedly. A sagging awning is not only unsightly—it can collect rainwater, stress the fabric and arms, and eventually fail catastrophically if not corrected.
Torsion Spring Tension Loss
Inside the awning roller tube is a torsion spring (or springs) that provides the tension to keep the fabric taut when extended and to retract the awning when you release it. Over years of use, these springs weaken and lose tension. The result: the fabric sags in the middle when extended, or the awning won't retract fully without manual assistance. This is a normal wear item but requires proper tools and technique to repair. Adjusting spring tension involves loosening the roller tube end cap, rotating the tube to wind up the spring, and re-securing the cap. This process is dangerous if done incorrectly—the torsion spring stores significant energy and can cause injury if it releases unexpectedly. Most RV owners should have a technician perform this adjustment, as special tools and knowledge of the specific awning model are required.
Arm Alignment and Hardware Wear
Awning arms must be perfectly parallel and at the same height for the fabric to roll evenly. If one arm is bent, its mounting brackets are loose, or the arm pivots have worn, the fabric will roll crooked or sag to one side. Road vibration, accidental impacts, or over-tightening during setup can all cause arm misalignment. A technician will measure and adjust the arms to ensure they're parallel, tighten mounting brackets, and replace worn pivot hardware. In some cases, a bent arm must be replaced—attempting to straighten bent aluminum or composite arms rarely works long-term.
Fabric Stretch and Wear
Awning fabric itself can stretch over time, especially if it's been subjected to pooling water, high winds, or prolonged UV exposure. Stretched fabric will sag even if spring tension and arms are correct. Unfortunately, stretched fabric cannot be shrunk or tightened—replacement is the only solution. Before replacing fabric due to sagging, verify that spring tension and arm alignment are correct. Many owners assume fabric is the problem when it's actually a simple spring adjustment that's needed.
Water Pooling and Collapse Risk
A sagging awning is prone to collecting rainwater in the center. Even a small amount of rain can quickly accumulate and add hundreds of pounds of weight, causing the awning to collapse, tearing the fabric, bending the arms, or damaging the RV sidewall. If your awning sags noticeably, never leave it extended in rainy conditions. Some RVers angle the awning (by lowering one arm) to create drainage slope, but this is only effective for light rain and can stress the arms unevenly. The proper solution is to restore proper spring tension and arm alignment so the fabric is taut.
⚠️ Safety Notes
- Do not attempt to adjust awning spring tension without proper tools and training—the torsion spring can cause serious injury if mishandled.
- Never extend a sagging awning in rain—collapse risk is high and can cause injury or expensive damage.
💡 Prevention Tips
- Inspect your awning for even tension and level roll at the start of each season—address sagging before it worsens.
- Retract the awning before storms or windy conditions to prevent additional stress and wear.
Can't fix it yourself?
Don't let a mechanical issue ruin your trip. Connect with vetted mobile RV technicians who can come to your location and get you back on the road.