The Cost of Acrylic Glass Walls for Pools and Underwater Windows
Acrylic glass walls and underwater windows provide a durable and visually attractive solution for pool construction. This article outlines the costs, benefits, and key considerations associated with installing acrylic glazing in pools.
(I.) Options
1. Horizontal Underwater Window
Horizontal underwater windows, also called skylights, provide a view into the pool from above. Installed flush with the pool floor or adjacent ceiling, they add natural light and a striking visual effect while remaining fully waterproof.
2. Glass Wall without Overflow
A glass (or acrylic) wall replaces a traditional pool wall in concrete, fiberglass, or other types of pools. These walls provide a transparent side, allowing swimmers and spectators to see directly through the pool.
3. Glass Wall with Overflow
same as 2., but for an infinity edge.
4. Rectangular Underwater Window
Pools that are adjacent to or integrated into buildings can include windows positioned below the waterline. These waterproof windows allow direct viewing into the pool from outside.
5. Round Window
Round porthole-type underwater windows are a popular choice for adding a unique visual feature to a pool. While custom diameters can generally be manufactured, more budget-friendly options are typically limited to a selection of standard sizes. These standard sizes provide an attractive, cost-effective solution for homeowners looking to enhance their pool’s design without the higher expense of fully custom glass.
- Water Line
(II.) Considerations
While standard float or safety glass can be used for very small windows, acrylic is generally the preferred choice for underwater glazing due to several advantages. Acrylic offers exceptional clarity and aesthetics, making it visually striking; superior durability, being more impact- and weather-resistant than standard glass; and outstanding design flexibility, supporting curved walls, glass corners, and other unique shapes.
Proper pool glazing includes not only the acrylic panels but a complete window system with frame, typically factory-sealed to the glazing for reliable waterproofing. The supplier should be able to provide a seal test certificate to verify that the seals have been thoroughly tested

(III.) Cost Components / Price Drivers
- Design and preparation: Pools need an opening and recess prepared for the window. This doesn’t add major cost but does add complexity to planning.
- Materials & systems:
- Acrylic cost depends on both size and thickness (larger or deeper pools require thicker panels).
- Ready-to-install systems include a stainless steel frame and sealants, which increase cost but simplify installation.
- additional materials like screws and waterproofing slurry might be needed depending on the type of window
- Customization: Unusual shapes and special installation conditions increase costs.
- Shipping: International delivery is common. While noticeable, shipping costs are usually small compared to the value of the product.
- Labor:
- Framed systems: simpler to install, often manageable by local contractors.
- Frameless blocks: require high expertise and very careful handling.
- In both cases, cranes are usually required for lifting.

(IV.) Typical Cost for Material
These ranges are indicative only and depend heavily on location, suppliers, and specifications. Always request a detailed supplier quote.
EUR and Metric for Systems with Frame
Window Type | Clear View Size | Cost |
---|---|---|
Standard round (porthole) | Ø 320 mm | €2.500–€3.250 |
Standard round (porthole) | Ø 780 mm | €5.000–€6.500 |
Rectangular window | 1 m² | €6.000–€7.800 |
Rectangular window | 5 m² | €15.000–€20.000 |
Glass wall for pool | 3 m² | €20.000–€26.000 |
Glass wall for pool | 9 m² | €45.000–€59.000 |
USD and Imperial for Systems with Frame
Window Type | Clear View Size | Cost |
---|---|---|
Standard round (porthole) | Ø 12.6 in | $2,800–$3,600 |
Standard round (porthole) | Ø 30.7 in | $5,500–$7,150 |
Rectangular window | 10 ft² | $6,600–$8,600 |
Rectangular window | 50 ft² | $16,500–$22,000 |
Glass wall for pool | 30 ft² | $22,000–$28,500 |
Glass wall for pool | 100 ft² | $49,500–$65,000 |
High-end custom projects can easily reach €100,000 or more.


(V.) Typical Cost for Labor
Task | Installer | Cost (EUR) | Cost (USD) |
---|---|---|---|
Framed system installation | Local contractor | €3.000–€5.000 | $3,300–$5,500 |
Framed system installation | Supplier-provided team | €8.000–€15.000 | $8,800–$16,500 |
Frameless block installation | Specialized company | €15.000–€40.000 | $16,500–$44,000 |

(VI.) Maintenance Costs
- Cleaning: requires special cleaners to avoid scratching. Standard pool chemicals are fine, but chlorine levels must be kept within safe limits.
- Repairs: scratches are rare if properly cleaned. If they occur, acrylic can be polished to restore clarity — unlike glass, which typically needs full replacement if damaged.
- Longevity: These acrylic systems are built to last 30 years or more, ensuring long-term durability and performance without significant upkeep. Window seals should be checked every five years and might need replacement after 10-15 years of continous service.
(VII.) Conclusion
Standard size round windows are relatively affordable, making them an attractive option for those looking for a striking pool feature without a high cost. Larger rectangular underwater windows also provide a visually impressive effect while remaining more budget-friendly. Glass walls, on the other hand, tend to be slightly more expensive. Framed systems offer higher quality, reliable waterproofing, and simpler installation.
Overall, glazing for pools are best suited for those who prioritize luxury and architectural uniqueness, though there are solutions available even for tighter budgets.
