How To Put Cover On Above Ground Pool: The Ultimate Step-by-Step Installation Guide

Properly securing an above ground pool cover protects your water chemistry, prevents organic debris accumulation, and reduces off-season chemical evaporation by up to 90%. Mastering this installation requires two people, correct tension distribution, and the right combination of cable ratchets and perimeter clips to withstand heavy winter winds and snow loads.

Pre-Operation & Equipment Checklist

Securing a protective barrier over your recreational water vessel requires precise preparation to prevent premature material tears, liner friction, and wind-lift failures. Whether you are installing a lightweight solar blanket for seasonal heat retention or a heavy-duty woven polyethylene winter cover, having the correct inventory prevents mid-installation delays and structural damage to your top rails.

• Essential Gear & Tools: Heavy-duty winter pool cover, winch and vinyl-coated steel cable, perimeter cover clips or wall wraps, air pillow (for winterizing), heavy-duty inflation pump, scissors or utility knife, and a soft-bristle brush.
• Mandatory Prerequisite Knowledge: Lower the pool water level to 4 to 6 inches below the skimmer and return jets (for winter closures), test and balance pool chemistry (chlorine, pH, total alkalinity, and algaecide), and clear all sharp debris from the top ledge and surrounding deck area.
• Budget & Duration Benchmarks: Estimated financial investment ranges from fifty to three hundred dollars depending on material denier and warranty length. Total execution duration typically takes 45 to 60 minutes for a two-person team.

Step-by-Step Above Ground Pool Cover Installation Workflow

Step 1: Lower Water Level and Clear Top Ledges

1. Pump or siphon water out of the pool until the level rests precisely 4 to 6 inches below the bottom of the skimmer faceplate for winter setups. For summer solar blankets, maintain normal operating water levels.
2. Wipe down the entire top rail and coping with a damp rag to remove abrasive dirt, bird droppings, pine needles, and sharp grit that could puncture the material under weight loads.
3. Inspect the top ledges for protruding screw heads, rust flakes, or splintered resin, filing or covering any sharp hazards before unfurling the fabric.

Warning: Never lower the water level completely in an above ground pool. Doing so removes essential outward hydrostatic pressure, which can cause the vinyl liner to shrink, pull away from the bead track, or collapse the pool walls entirely under surrounding soil pressure.

Step 2: Inflate and Position the Air Pillow

1. Inflate your heavy-duty vinyl air pillow until it is roughly 60 to 70 percent full. Do not overinflate the pillow, as expansion from freezing water or direct sunlight can cause the seams to rupture.
2. Tie a weather-resistant nylon cord securely to the grommets located on the corners or edges of the air pillow.
3. Place the inflated pillow directly in the exact geometric center of the pool surface. Tie the anchor lines to the top rails on opposite sides of the pool to prevent the pillow from drifting toward the walls during cover deployment.

Step 3: Unfurl and Center the Cover Across the Span

1. Retrieve the cover from its storage container and unfold it on the ground near the pool deck, inspecting it for pinholes, thinning spots, or seam separations.
2. With one person stationed on opposite sides of the pool perimeter, lift the leading edge of the cover and pull it smoothly across the water surface and the central air pillow.
3. Adjust the overhang manually until there is an equal amount of excess material draping down the outside of the top rail all the way around the circumference of the pool.

Pro-Tip: Avoid dragging the cover directly across sharp metal top plates or rough deck surfaces. Always lift and float the material into position to prevent friction burns and micro-tears in the polyethylene weaving.

Step 4: Thread the Cable and Secure the Winch

1. Feed the vinyl-coated steel cable sequentially through the designated eyelets, grommets, or loops built into the perimeter hem of the pool cover.
2. Wrap the cable completely around the exterior of the pool just below the bottom edge of the top rails.
3. Insert both ends of the cable into the mechanical ratchet winch, pull the slack tight by hand, and crank the handle to tension the cable securely against the pool wall.

Step 5: Lock Down Perimeter Tension and Prevent Wind-Lift

1. Check the tension around the entire perimeter to ensure the cover is centered and no large pockets of material are pulling unevenly against the upright posts.
2. Install above ground pool cover clips (or wrap guards) every 2 to 3 feet along the top rail to clamp the excess material firmly against the vertical wall, eliminating wind-lift gaps.
3. Trim away any excessive trailing plastic flaps with utility shears if they present a tripping hazard or interfere with surrounding landscaping.

Above Ground Pool Cover Material Properties Comparison

Common Site Failures & Field Fixes

Even with precise installation, external weather elements and material stress can lead to common maintenance issues. Knowing how to diagnose and correct these failures promptly preserves the integrity of your pool structure.

• Root Cause: Excessive wind catches underneath a loose cover, causing the cable to slip up over the top rail and unseat the entire perimeter.
  
  
  • Actionable Fix: Tighten the winch mechanism further using pliers for leverage, and install specialized heavy-duty cover clips or wrap guards spaced 2 feet apart to anchor the material directly to the wall structure.
• Root Cause: The central air pillow deflated or drifted to one side, allowing rainwater and snowmelt to pool heavily in the center, putting dangerous strain on the cover seams.
  
  
  • Actionable Fix: Pump standing water off the top of the cover using a siphon or cover pump, reposition and re-inflate the air pillow to 70 percent capacity, and secure it firmly with anchor lines tied to opposing top rails.
• Root Cause: Punctures or small tears developed in the polyethylene fabric from falling tree branches or abrasive contact with sharp metal coping.
  
  
  • Actionable Fix: Clean and dry the damaged area thoroughly with isopropyl alcohol, and apply a heavy-duty self-adhesive vinyl pool patch kit to both the interior and exterior sides of the tear.

Frequently Asked Questions

How do I keep water from pooling on top of my above ground pool cover?

Water accumulation on top of a winter cover is best managed by using a properly inflated center air pillow that elevates the middle of the cover, creating a downward slope toward the edges. Additionally, you should use an electric automatic pool cover pump or manual siphon to remove standing rain or melting snow before the weight exceeds manufacturer limits.

Can I use a solar blanket as a winter cover?

No, solar blankets are constructed from lightweight bubble polyethylene designed strictly for daytime heat retention and chemical evaporation control during swimming season. They lack the structural denier strength, woven scrim reinforcement, and UV inhibitors required to survive freezing temperatures, ice expansion, and heavy snow loads.

How tight should the cable be pulled through the winch?

The cable should be pulled taut enough that the cover cannot be easily lifted over the top rail by gusting winds, but not so tight that it strains or deforms the grommets and cable housing. Use the mechanical winch to draw the cable snug against the vertical wall below the top ledge, leaving just enough play to prevent ripping the hem.

Do I need to lower the water level before putting on a winter cover?

Yes, lowering the water level to roughly 4 to 6 inches below the skimmer faceplate prevents water from entering the skimmer throat and freezing during sub-zero temperatures. Ice expansion inside an un-drained skimmer body will crack the plastic housing and cause costly structural leaks.

Protect your investment this season by using high-grade materials and proper anchoring techniques designed to withstand harsh winter elements. Explore our complete line of premium pool covers and winterization accessories today to ensure crystal-clear water when swim season returns.