When Do You Need an Oversized Spa Cover?
Not every spa can use a standard two-piece cover. When a spa measures more than 96 inches in either direction, the cover usually requires a different construction method to handle the larger size and panel spans.
Oversized spa covers are commonly used for swim spas, large built-in spas, fiberglass spas, and other installations that exceed standard cover dimensions. Because every large spa is different, the number of sections and the panel layout must be planned around the actual measurements of the spa.
When Is a Spa Cover Considered Oversized?
For our covers, a spa cover is considered oversized when it measures more than 96 inches in either direction.
Once a cover exceeds that size, it cannot simply be built as a larger version of a standard two-piece hot tub cover. The foam panels, reinforcement, hinges, and overall section layout must be designed around the larger dimensions.
Common examples include:
- Swim spas
- Large built-in plaster or Gunite spas
- Oversized fiberglass spas
- Spas built into decks or patios
- Long rectangular spas
- Large custom-shaped installations
How Oversized Spa Covers Are Built
Oversized spa covers are built in multiple sections because standard foam panels cannot simply be extended indefinitely.
Our oversized covers use Heavy Duty 2.0 lb foam as the standard construction. The exact number of sections depends on the overall dimensions and shape of the spa.
Construction may include:
- Multiple reinforced cover sections
- Heavy Duty 2.0 lb foam
- Steel C-channel reinforcement
- A flat center section when required by the overall span
- Three-piece or four-piece construction for longer spas
Standard foam panels are generally built within approximately 4-foot by 8-foot sections. When a spa is especially long or wide, additional sections may be required so the cover can be properly supported and handled.
Why Panel Layout Matters
The number of sections is not chosen only for appearance. Large foam panels become difficult to handle and place greater stress on the cover structure.
Dividing a large cover into properly sized sections can make the cover easier to use while helping control long unsupported spans.
For example, some swim spas require a three-piece cover, while longer models may require four sections. Other oversized spas may use two large tapered sections with a narrow flat center section between them.
The correct layout depends on the actual length and width of the spa.
Oversized Covers for Swim Spas
Swim spas are one of the most common reasons customers need oversized spa covers. Their length makes standard two-piece construction impractical for many models.
A swim spa cover may be built in three or four sections depending on the overall dimensions. The goal is to create sections that provide proper coverage while remaining practical to open, close, and move.
Because swim spas vary considerably in size and design, the exact measurements should be confirmed before the cover goes into production.
Oversized Covers for Built-In and In-Ground Spas
Large built-in plaster, Gunite, and fiberglass spas may also require oversized cover construction.
Measuring an in-ground spa is different from measuring a portable hot tub. For a built-in spa, we normally start with the water opening and then determine how much additional coverage is needed so the cover can rest properly on the surrounding coping or deck surface.
The final cover size depends on the spa opening, surrounding surface, shape, and available resting area.
Irregular or free-form shapes may require a template rather than measurements alone.
Insulation and Foam Density
Oversized spa covers are built with Heavy Duty 2.0 lb foam. This provides greater strength for the larger spans required in oversized and swim spa covers.
The cover sections are tapered where appropriate to help shed rainwater and provide insulation. Some large designs may also require a flat center section as part of the overall panel layout.
Foam density is only one part of the cover. Proper reinforcement, vapor barrier protection, panel size, hinge placement, and overall construction also affect how the cover performs.
Important Safety Information for Oversized Covers
Spa covers over 96 inches are not ASTM F1346-91 child-safety rated. Their large dimensions and multi-panel construction place them outside the size range of our ASTM-qualified covers.
Locking tie-downs are available for oversized and swim spa covers and can help restrict access to the spa. However, they do not make an oversized cover ASTM-certified.
When access by children is a concern, the locking tie-downs should be secured whenever the spa is not in use. Additional barriers or safety measures may also be appropriate depending on the installation.
How Do You Measure an Oversized Spa?
The correct measuring method depends on the type of spa.
For a large portable or fiberglass spa, measurements are generally taken from the outside edges of the spa shell. The length, width, corner radius, cut corners, and other special features must be considered.
For a built-in plaster or Gunite spa, the water opening and surrounding coping or deck area need to be evaluated so the cover has a proper resting surface.
For unusual free-form shapes, a full-size template may be required.
Because oversized covers are custom-built and freight costs can vary significantly, these covers are quoted individually.
How Are Oversized Spa Covers Delivered?
Oversized and swim spa covers are generally too large for standard parcel delivery. For out-of-area customers, they are normally shipped by LTL freight carrier.
The carrier typically contacts the customer to arrange a delivery appointment. Freight cost depends on the size of the packaged cover and the delivery location.
For Southern California customers, local delivery options may be available depending on the location and time of year.
Frequently Asked Questions
What size spa needs an oversized cover?
For our covers, a spa measuring more than 96 inches in either direction is considered oversized and requires special construction.
Are oversized spa covers always three pieces?
No. The number of sections depends on the spa dimensions. Some covers may use three sections, while longer swim spas may require four. Other layouts may use a flat center section between larger tapered panels.
What foam is used in oversized spa covers?
Our oversized and swim spa covers are built with Heavy Duty 2.0 lb foam as the standard construction.
Can an oversized cover have locking tie-downs?
Yes. Locking tie-downs are available. However, covers over 96 inches are not ASTM F1346-91 child-safety rated.
Can you make a cover for an irregular oversized spa?
Yes. Depending on the shape, detailed measurements or a full-size template may be required.
How long does an oversized spa cover take to make?
Normal production time is approximately 3 to 4 weeks.
Need a Quote for an Oversized or Swim Spa Cover?
Oversized spa covers require careful planning because the overall dimensions determine the number of sections, foam layout, reinforcement, and shipping method.
Spa Covers Etc. has been helping customers with custom spa covers since 1997. We build covers for swim spas, oversized fiberglass spas, built-in plaster and Gunite spas, and unusual custom shapes.
For a quote, call Chris at (949) 496-2883. Have the overall dimensions and spa location available so we can determine the appropriate construction and delivery options.
We’ve got your spa covered!
