Key takeaways
- Measuring depth at the edge only. Shelves slope toward the drain or the drop-off; a 9-inch reading at the wall can be 11 inches where the foot of the chair sits.
- Buying a patio chaise and hoping. Standard aluminum sling chaises have 12 to 15 inch seat heights but hollow frames that float and fabric that mildews. Without ballast and pool-rated materials they last one season.
- Ignoring the drop-off clearance. A 78-inch chaise on a 7-foot-deep shelf leaves 6 inches of margin, not enough when the chair shifts during use.
- Forgetting the umbrella. A 9-foot umbrella canopy centered in a floor sleeve shades a radius of 4.5 feet; loungers placed farther than that from the pole sit in sun all afternoon.
- Underestimating weight. Loungers under about 25 pounds without ballast will drift or tip in wind and when someone gets out of the pool nearby.
- Skipping chemical compatibility. Some resins chalk in chlorinated or saltwater pools within a year. Look for pool-rated polyethylene or marine-grade HDPE with UV inhibitors, and stainless or no metal hardware.
What's inside
The Short Answer
Most in-pool loungers are built for a sun shelf (also called a tanning ledge or Baja shelf) with 6 to 12 inches of water, and the sweet spot is 9 inches. A standard in-pool chaise is 65 to 78 inches long, 26 to 30 inches wide, and has a seat deck 10 to 14 inches off the shelf floor, which puts the seat 1 to 4 inches above the waterline on a 9-inch shelf. Deeper shelves of 12 to 18 inches need loungers with tall or adjustable risers, and shelves over 18 inches are wading areas where nothing but a floating lounger works. Measure the water depth at the spot where you want the chair, not at the shelf edge, and check the lounger’s rated depth range before buying anything; a chair rated for 9 inches sitting in 14 inches of water leaves you sitting in a puddle.
Standard Sizes
| Lounger type | Length x width (inches) | Length x width (cm) | Seat height off shelf | Rated water depth | Typical weight |
|---|---|---|---|---|---|
| Low-profile in-pool chaise | 65 to 70 x 26 to 28 | 165 to 178 x 66 to 71 | 8 to 10 in (20 to 25 cm) | 4 to 8 in (10 to 20 cm) | 20 to 30 lb (9 to 14 kg) |
| Standard in-pool chaise | 70 to 78 x 27 to 30 | 178 to 198 x 69 to 76 | 10 to 14 in (25 to 36 cm) | 6 to 12 in (15 to 30 cm), 9 in ideal | 25 to 45 lb (11 to 20 kg) |
| Riser-equipped chaise | 72 to 78 x 28 to 30 | 183 to 198 x 71 to 76 | 14 to 20 in (36 to 51 cm) | 12 to 17 in (30 to 43 cm) | 35 to 55 lb (16 to 25 kg) |
| In-pool armchair or club chair | 30 to 34 x 30 to 34 | 76 to 86 x 76 to 86 | 12 to 16 in (30 to 41 cm) | 6 to 12 in (15 to 30 cm) | 20 to 35 lb (9 to 16 kg) |
| Weighted riser kit (adds to a patio chaise) | Fits chairs 24 to 30 wide | 61 to 76 wide | Adds 4 to 8 in (10 to 20 cm) | Up to 12 to 15 in (30 to 38 cm) | 15 to 30 lb per kit (7 to 14 kg) |
| In-pool side table | 16 to 20 diameter | 41 to 51 diameter | 18 to 22 in (46 to 56 cm) | Up to 15 in (38 cm) | 10 to 20 lb (5 to 9 kg) |
Prices run from about $120 to $130 for a riser kit or an in-pool side table, $400 to $900 for a single quality chaise, and $1,200 to $1,500 for a pair of made-to-order loungers with custom risers. Weight matters: a chaise under 25 pounds will float or drift unless it has ballast chambers you fill with water or sand.
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How to Measure Your Space
- Measure water depth at three points. With the pool at normal fill, use a yardstick at the front edge of the shelf, at the middle, and where you plan to place the chair back. Shelves are rarely dead level; a half-inch slope over 6 feet is common and changes how a lounger sits.
- Measure the shelf footprint. Record length along the pool wall and depth from the wall to the drop-off. A standard chaise needs about 78 by 30 inches (198 by 76 cm) plus 12 inches (30 cm) of clearance from the drop-off so the foot end cannot slide over.
- Check the step or entry. If the shelf doubles as the pool entry, keep a 30 to 36 inch (76 to 91 cm) clear path from the steps to the deep end.
- Note the umbrella sleeve. Many shelves have a 1.5 to 2 inch sleeve set in the floor. Place loungers so the umbrella pole is 12 to 18 inches from the seat edge and the canopy covers the head end at midday.
- Confirm the waterline. Subtract seat height from water depth. You want the seat 1 to 4 inches above the water for a dry back, or level with the water if you prefer a half-submerged lounge. Anything more than 2 inches below the waterline feels like sitting in a bath.
- Check the surface. Pebble and aggregate finishes grip chair feet; smooth plaster and tile let light chairs drift. On smooth surfaces, add weight or choose a chair with rubber feet.
By Room or Use Case
Shallow shelf, 4 to 8 inches (10 to 20 cm)
This is a true tanning ledge. Low-profile chaises with an 8 to 10 inch seat height keep you fully dry and are the most stable because the water barely reaches the frame. Standard chaises also work but feel tall; the seat will sit 4 to 8 inches above the water and you lose the cooling effect. A shallow shelf is also where in-pool armchairs shine for reading and drinks.
Standard shelf, 9 to 12 inches (23 to 30 cm)
The most common residential depth and the one most in-pool loungers are designed around. A chaise with a 10 to 14 inch seat height puts you right at or just above the water. At 12 inches, choose a chair rated to at least 12 inches or you will sit half-submerged. Pair with a side table rated to 15 inches so drinks stay above the surface.
Deep shelf, 13 to 18 inches (33 to 46 cm)
Standard chaises are underwater here. You need a lounger with built-in tall risers rated to 17 inches, or a weighted riser kit that lifts a patio chaise 4 to 8 inches. Kits are the budget path at $120 to $130 each, but check that your existing chaise has straight legs of 1 to 1.5 inch diameter that fit the riser sockets. At 16 to 18 inches, even risers leave the seat at the waterline, which some people like and others do not.
Small shelf or narrow ledge under 4 feet (122 cm) deep
A full chaise will hang over the edge. Use in-pool armchairs at 30 to 34 inches square, or a pair of low stools with a shared side table. Two armchairs and a table fit a shelf as small as 8 by 4 feet (244 by 122 cm).
Shared entry shelf
When the shelf is also the steps into the pool, run loungers parallel to the pool wall, head ends toward the steps, and leave a 3-foot (91 cm) lane along the drop-off. One chaise plus a table is realistic on a 10 by 6 foot (305 by 183 cm) entry shelf; two chaises need 12 feet (366 cm) or more of wall length.
Common Sizing Mistakes
- Measuring depth at the edge only. Shelves slope toward the drain or the drop-off; a 9-inch reading at the wall can be 11 inches where the foot of the chair sits.
- Buying a patio chaise and hoping. Standard aluminum sling chaises have 12 to 15 inch seat heights but hollow frames that float and fabric that mildews. Without ballast and pool-rated materials they last one season.
- Ignoring the drop-off clearance. A 78-inch chaise on a 7-foot-deep shelf leaves 6 inches of margin, not enough when the chair shifts during use.
- Forgetting the umbrella. A 9-foot umbrella canopy centered in a floor sleeve shades a radius of 4.5 feet; loungers placed farther than that from the pole sit in sun all afternoon.
- Underestimating weight. Loungers under about 25 pounds without ballast will drift or tip in wind and when someone gets out of the pool nearby.
- Skipping chemical compatibility. Some resins chalk in chlorinated or saltwater pools within a year. Look for pool-rated polyethylene or marine-grade HDPE with UV inhibitors, and stainless or no metal hardware.
FAQ
What is the ideal water depth for a sun shelf lounger?
Nine inches (23 cm) is the depth most in-pool chaises are built around, because it puts a 10 to 12 inch seat just above the waterline. Six to 12 inches (15 to 30 cm) is the workable range for standard chairs; go outside that and you need a low-profile chair or risers.
Can I use risers to make a regular chaise work in the pool?
Yes, if the chaise is aluminum or resin with straight round or square legs, and you add ballast. Weighted riser kits lift a chair 4 to 8 inches (10 to 20 cm) and hold it in place; they cost $120 to $130 per kit. Fabric slings, steel frames, and wood are still poor choices in the water regardless of height.
How much space should I leave between two in-pool loungers?
Leave 18 to 24 inches (46 to 61 cm) between chairs for a shared side table and easy entry, or 8 to 12 inches (20 to 30 cm) if you want them close for conversation. Two standard chaises with a table need about 10 feet (305 cm) of shelf length.
Should I size a new sun shelf around loungers if I am building a pool in 2026?
Yes. Ask the builder for 9 inches of water depth (10 inches of shelf drop to allow for level variation), a minimum footprint of 12 by 6 feet (366 by 183 cm) for two chaises and a table, an umbrella sleeve centered between the chairs, and a textured finish so chairs do not slide. Those four choices avoid nearly every fit problem later.
