How to Choose the Right Oversized Spa Cover
Choosing the right oversized spa cover requires more than simply measuring your spa. Covers over 96 inches or designed for swim spas require a different construction method to provide proper support, insulation, and durability. Understanding how oversized covers are built will help you make the right decision.
1. Confirm the Size
Oversized spa covers are required when your spa measures more than 96 inches in any direction or has an extended or unusual shape. These covers cannot use standard two-panel construction because the wider span requires additional structural support.
Accurate measurements are critical. For oversized covers, orders are handled by phone to ensure proper specifications and reinforcement.
2. Understand the Construction
Oversized spa covers use a three-panel design:
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Two 4″ x 2″ tapered foam panels
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One 4″ flat center section
The flat center section provides added structural support across the wider opening and helps prevent sagging.
Oversized covers use 2 lb. density foam. Super foam upgrades are not available due to structural requirements.
3. Know the Safety Differences
Covers over 96 inches do not meet ASTM child-safety certification standards because of size limitations.
However:
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Lockable child-safety tie-downs are available
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Tie-downs provide similar securing functionality
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They are not officially ASTM certified due to dimensions
If you live in a high-wind area, standard tie-downs are not sufficient. Custom high-wind straps are available and must be ordered by phone.
4. Consider How the Spa Is Installed
Many oversized covers are used on built-in plaster spas set at deck level. Because these spas are flush with the surrounding surface, covers may occasionally experience pressure from accidental stepping (although walking on covers is not recommended).
The reinforced center construction provides better durability for these situations.
5. Focus on Long-Term Protection
A properly constructed oversized spa cover:
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Reduces heat loss
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Improves insulation stability
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Protects internal equipment
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Helps maintain water quality
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Extends spa lifespan
Choosing the correct construction ensures your spa stays protected year-round.
Final Thoughts
Oversized spa covers are not simply larger versions of standard covers. They require reinforced construction, specific foam density, and proper securing options.
To ensure correct measurements, construction, and safety considerations, oversized spa covers and high-wind straps must be ordered by phone.
If your spa exceeds 96 inches or requires a custom configuration, contact Spa Covers Etc. for guidance and ordering assistance.
