How to Choose the Right Inground Pool Cover: Types, Sizing, and Safety

The right inground pool cover does three quiet jobs at once: it keeps your kids and pets safer, keeps leaves and debris out of the water, and keeps money in your pocket all winter. The wrong one sags, tears, or lets the green creep in by spring. This guide walks you through the cover types, how to size one correctly, the safety features that actually matter, and what you can expect to spend, so you can match a cover to your pool and your climate with confidence.

A pool is one of the bigger investments your backyard will ever hold. A good cover is how you protect it between swim seasons, and it pays you back in cleaner water, lower energy bills, and real peace of mind on the days nobody is watching the deep end.

Cover it All in 15 Seconds

• Four main types of inground pool covers suit different needs: mesh safety covers, solid winter covers, automatic covers, and solar or thermal blankets.
• A mesh safety cover is the best all-around choice for families: it anchors to the deck, supports weight, blocks debris, and drains water and snowmelt through the mesh.
• Sizing matters more than almost anything. Measure your pool’s length and width, then choose a cover that overlaps the edge, rather than one that simply lays on top of the water.
• Safety features to verify: a recognized safety-cover standard (ASTM F1346), anchored attachment points, and the strength to hold a child or pet.
• Typical market costs range from about $75 for a solar blanket to $1,200–$3,000 for a mesh safety cover and $8,000–$15,000+ for an automatic cover, depending on size and site.

Want to get an accurate price right now? Start your free pool cover quote, it take seconds complete.

Why a Quality Pool Cover Protects Your Investment

Think about the first warm Saturday of spring. With the right cover, you peel it back to clear water and a quick startup, and the family is swimming that afternoon. Without one, you are staring at a swamp, a clogged filter, and a weekend of chemicals.

A good inground pool cover earns its keep in four ways:

• Cleaner water. It keeps leaves, dirt, pollen, and stray toys out, which means less skimming and less strain on your filtration system.
• Lower costs. By blocking evaporation and holding in heat, a cover cuts water loss and trims energy use over a long off-season.
• Longer pool life. Less debris and fewer freeze-related stresses mean less wear on your shell, equipment, and water chemistry.
• Peace of mind. A true safety cover adds a physical barrier between curious kids or pets and an unattended pool.

That last point is the one parents feel most. A cover is not a substitute for supervision or a fence, but a properly anchored safety cover is one more layer of protection on the days you cannot be poolside.

Types of Pool Covers for Inground Pools

There is no single “best” cover, only the best cover for your climate, your habits, and your budget. Here are the four types worth knowing, and who each one fits.

Cover type	What it does	Best for
Mesh safety cover	Anchors to the deck, supports weight, blocks debris while draining water through the mesh	Families who want safety plus low off-season hassle
Solid winter cover	Solid sheet that blocks all light and debris; needs a pump or drain to clear standing water	Cold-climate winterizing where blocking sunlight matters
Automatic cover	Push-button cover that rolls on and off; adds daily safety and heat retention	Convenience buyers who cover the pool often
Solar / thermal blanket	Floating blanket that retains heat and reduces evaporation	Stretching the swim season and cutting heating costs

Mesh safety covers

A mesh safety cover is the workhorse for most families. It anchors into the deck with springs and straps, pulls taut across the pool, and supports significant weight, which is what makes it a true safety barrier. The mesh lets rain and snowmelt drain straight through, so you are not left with a pool of dirty water sitting on top all winter. It is lightweight to handle and blocks most debris.

Solid winter covers

A solid cover blocks all sunlight, which helps prevent algae during a long, cold off-season. The trade-off is water management: rain and snowmelt collect on the surface, so you will need a cover pump or a built-in drain panel to keep it clear and protect the cover from sagging.

Automatic covers

An automatic cover rolls on and off with the push of a button, so it gets used daily rather than only at season’s end. That daily use adds convenience, helps retain heat, and provides a safety layer between swims. Automatic covers are the most involved option to install and the priciest, but for households that want to cover the pool every night, the ease is hard to beat.

Solar and thermal blankets

A thermal pool blanket is not a safety device, but it is one of the most cost-effective accessories you can own. It floats on the surface, traps heat, and slows evaporation, which makes any heater options for fiberglass pools work less and cost less to run. If a longer swim season is the goal, a blanket is the first add-on to consider.

How to Choose the Right Size Inground Pool Cover

Sizing is where most cover buyers go wrong. A cover that simply rests on the water will not protect anyone or anything for long. You want a cover sized to your pool that overlaps the edge and anchors to the deck.

Here is how to get it right:

1. Measure the pool, not the cover. Record the length and width of the water surface at its widest points.
2. Account for shape. Fiberglass pools often have curved corners, tanning ledges, or freeform outlines, so a custom-fit cover beats a generic rectangle.
3. Plan for overlap. Safety covers are designed to extend past the pool edge and anchor into the surrounding deck, which is what gives them their hold.
4. Match the cover to the pool model. If you bought a one-piece fiberglass shell, the exact dimensions are known, which makes ordering a precise, custom cover simple.

Because every fiberglass model has fixed, factory-measured dimensions, matching a cover to your shell is far more exact than guessing at a vinyl or concrete pool’s hand-built measurements. When in doubt, share your model and measurements and let a specialist confirm the fit before you order.

Safety Features to Look for in an Inground Pool Cover

If safety is a priority, and for families it usually is, not every “cover” qualifies. A pool tarp or a floating blanket is not a safety barrier. Look for these features:

• A recognized safety standard. True safety covers are built and tested to ASTM F1346, the standard that addresses a cover’s ability to hold weight and limit access. The U.S. Consumer Product Safety Commission’s pool safety guidance is a useful reference for layered pool protection.
• Anchored attachment. Safety covers anchor into the deck under tension. That anchoring is what lets the cover support a child’s or pet’s weight rather than giving way.
• Proper weight rating. Confirm the cover is rated to hold weight across its surface, not just at the edges.
• A snug, custom fit. Gaps at the edge defeat the purpose. The closer the fit to your pool’s true shape, the safer and cleaner it stays.

Remember that a cover is one layer of protection. Pair it with fencing, alarms, and supervision for a complete approach, exactly as safety organizations recommend.

How Much Does an Inground Pool Cover Cost?

Cover pricing depends on type, size, and how custom the fit needs to be. These are typical market ranges to help you budget; your exact price depends on your pool’s dimensions and your region.

Cover type	Typical market range
Solar / thermal blanket	$75 – $300
Solid winter cover	$1,000 – $2,500
Mesh safety cover	$1,200 – $3,000
Automatic cover	$8,000 – $15,000+

A mesh safety cover is the sweet spot for most families: a reasonable one-time cost for years of safety, cleaner water, and lower off-season upkeep. An automatic cover costs more upfront but delivers daily convenience and heat retention. A thermal blanket is the budget-friendly way to extend your swim season. When you are ready for an exact figure, we will help you price the right cover for your specific pool.

Matching a Cover to Your Fiberglass Pool and Climate

The smooth, non-porous gel coat surface of a fiberglass pool already resists algae and keeps maintenance low, roughly $350–$400 per year compared with $1,000+ for vinyl and $2,000+ for concrete. A good cover protects that advantage through the off-season.

Your climate should guide the choice:

• Cold, frost-prone regions: A mesh safety cover paired with proper winterization keeps debris out and drains snowmelt while your shell rides out freeze–thaw cycles. Our guide to winter pool maintenance for fiberglass walks through the full routine.
• Mild or warm regions: A thermal blanket plus a pool heater can stretch your swim season well past the calendar summer.
• Year-round swimmers: An automatic cover keeps the pool covered between daily swims, holding heat and adding a safety layer with one button.

Whatever your region, the cover is part of a bigger picture: the shell, the equipment, and the accessories that fit how your family actually uses the backyard. If you are still choosing a pool, you can browse fiberglass pool models by size and shape, then plan the cover around it.

Frequently Asked Questions

What is the best pool cover for an inground pool?

For most families, a mesh safety cover is the best all-around choice. It anchors to the deck, supports weight as a safety barrier, blocks debris, and drains water and snowmelt through the mesh, so there is no standing water to pump off in spring.

What size pool cover do I need?

Measure the length and width of your pool’s water surface at its widest points, then choose a safety cover designed to overlap the edge and anchor into the deck. For a one-piece fiberglass pool, the factory dimensions make ordering a precise, custom-fit cover straightforward.

Can I add a pool cover to an existing fiberglass pool?

Yes. Any inground fiberglass pool can be fitted with a cover, including mesh safety covers, solid winter covers, automatic covers, and thermal blankets. Because fiberglass shells have known, factory-set dimensions, a custom cover can be matched precisely to your model.

Do pool covers really save money?

Yes. A cover reduces water loss from evaporation, helps retain heat, and keeps debris out, which means less filtration strain and fewer chemicals. Over a full off-season, those savings add up in lower water, energy, and maintenance costs.

What safety features should I look for in an inground pool cover?

Look for a true safety cover built to the ASTM F1346 standard, with deck-anchored attachment points and a weight rating that lets it support a child or pet. A snug, custom fit with no edge gaps is essential. Treat the cover as one layer alongside fencing, alarms, and supervision.

The Right Cover Is Worth Getting Right

Choosing an inground pool cover comes down to four questions: What type fits your climate and habits? What size matches your pool? Does it meet a real safety standard? And does it fit your budget? Get those right, and your cover quietly protects your pool, your wallet, and the people you love between every swim season.

If you want help matching a cover to your specific pool, explore our automatic and safety pool covers, or request your free, no-obligation quote and we will walk you through the right cover, sizing, and options for your inground pool.