Frequently Asked Questions

A NESPA spa combines a water-retaining fiberglass shell with a hand-installed tile finish and a steel-reinforced Poly-Metal support structure. It delivers the architectural appearance of a custom tiled spa in a factory-manufactured system.

A conventional hot tub normally uses a molded acrylic interior, while a NESPA spa has a genuine tile finish installed over a fiberglass shell. NESPA also offers greater architectural coordination, finish selection, and project-specific configuration.

A NESPA spa is manufactured under controlled factory conditions rather than being formed and finished entirely at the jobsite. Its fiberglass water-retaining shell and Poly-Metal structure reduce the amount of specialized spa construction that must be completed on site.

NESPA spas are fabricated, reinforced, tiled, assembled, and inspected at the factory according to the selected completion level. Final placement, utility connections, surrounding construction, and commissioning are completed at the project site unless specifically included in the contract.

Yes, a NESPA spa may be designed for above-ground, partially recessed, or in-ground installation. The foundation, drainage, access, ventilation, and surrounding construction must be coordinated for the selected installation method.

Yes, NESPA spas may be specified for residential, hospitality, multifamily, and other commercial applications. Commercial projects may require additional engineering, equipment, accessibility, operational, and local-code coordination.

Customization depends on the selected model and completion level. NESPA can review project-specific requests for dimensions, seating, steps, jets, tile, lighting, controls, equipment, covers, and access before production drawings are finalized.

Provide the project location, desired spa size and layout, installation type, tile preference, equipment location, cover requirements, access conditions, and requested completion level. Architectural drawings, site plans, reference images, and utility information help NESPA prepare a more accurate proposal.

Lead time depends on the model, customization, tile availability, equipment package, approval schedule, and current production workload. The applicable estimated production and delivery schedule will be stated in the project proposal or order documents.

Documentation may include approved shop drawings, equipment requirements, component information, identification numbers, startup guidance, maintenance instructions, and troubleshooting resources. The owner booklet and its QR code should be retained because they connect the spa to current NESPA support materials.

Poly-Metal is NESPA's steel-reinforced structural system that supports and stabilizes the tiled fiberglass spa assembly. It is designed to help the shell, seating, steps, and surrounding framework function as an integrated unit.

Steel reinforcement is incorporated around and beneath designated portions of the fiberglass shell as part of the Poly-Metal structure. The exact framing arrangement is based on the spa model, dimensions, equipment layout, and project requirements.

The fiberglass shell forms the spa vessel and shaped interior, while the steel framework reinforces and supports the overall assembly. Together, they provide a stable base for the water load, tiled finish, seating surfaces, and normal use.

The Poly-Metal structure helps transfer and distribute loads through the reinforced spa assembly rather than relying on the tile finish alone. The tile is a durable finish; the underlying fiberglass and reinforced structure provide the primary support.

Steel reinforcement increases rigidity and helps control movement in the spa assembly. Reducing excessive flexing supports more consistent tile and grout performance when the spa is properly installed on an adequate foundation.

Poly-Metal construction is part of NESPA's reinforced spa approach, but the exact structural configuration may vary by model and completion level. The approved quotation and shop drawings identify what is included for each project.

The steel components are fabricated and protected as part of NESPA's specified production system. Final corrosion-protection language, coatings, drainage, ventilation, and environmental requirements should be confirmed in the approved project specifications.

The reinforced structure helps maintain the spa assembly during normal factory handling, transportation, and placement. The spa must still be lifted only from approved points and handled according to NESPA's shipping and installation instructions.

No. The Poly-Metal structure does not replace the need for a level, stable, load-bearing foundation designed for the filled spa and site conditions.

NESPA reviews the fabricated structure and spa assembly during production as part of its quality-control process. Project-specific inspection, testing, and documentation requirements should be confirmed in the order and submittal package.

Yes, appropriately selected tile can perform on spa floors, benches, steps, and walls when it is fully supported and installed with a compatible submerged-use bonding system. The fiberglass shell and Poly-Metal structure support the load beneath the finish.

Normal spa use should not crack properly selected and fully supported tile. Impact, unsupported voids, excessive structural movement, freezing water, improper installation, or unsuitable tile can increase the risk of damage.

NESPA uses a bonding process designed for the selected tile and fiberglass surface, including proper surface preparation and full adhesive coverage. The exact adhesive or silicone system may vary by tile type and approved production specification.

Excessive movement can stress any tiled finish, which is why NESPA reinforces the shell with its Poly-Metal structure and requires a proper foundation. Correct bonding, full coverage, joint preparation, and installation details also help manage movement.

The tile is the finished surface and is not intended to act as the primary structure. User and water loads are supported by the fiberglass shell, Poly-Metal reinforcement, and properly prepared foundation beneath the spa.

Large-format porcelain may be used when the specific tile is approved for the application and the spa geometry allows full, continuous support. Curves, transitions, steps, and tight contours may be better suited to smaller-format tile or mosaics.

Some products in each category may be suitable, but not every decorative tile is approved for continuous submersion, heat, chemicals, or freeze-thaw exposure. NESPA should review the exact tile, backing, finish, absorption, and manufacturer instructions before approval.

Approved tile and installation materials are selected for demanding wet-service conditions. Long-term performance still depends on correct installation, balanced water chemistry, controlled temperatures, maintenance, and winterization where required.

Yes. Water trapped in the tile system, grout joints, plumbing, or fittings can expand when frozen and cause damage. In freezing climates, the spa must remain properly heated and operating or be fully winterized according to NESPA and equipment instructions.

Any submerged surface can become slippery, especially when polished, contaminated, or covered with scale or biofilm. NESPA should use suitable finishes on steps and walking surfaces, while owners must keep those areas clean and use appropriate caution.

Tile edges, cuts, transitions, and corners should be finished and installed to reduce sharp contact points. Owners should stop using the spa and request service if a tile becomes chipped, broken, loose, or develops an exposed sharp edge.

No. Grout fills and finishes the joints between tiles, but it is not the primary water-retaining component. The fiberglass shell beneath the tile serves as the spa vessel.

A cosmetic crack in tile or grout does not automatically mean the fiberglass shell has been compromised. The area should still be inspected promptly to determine the cause and confirm that the underlying shell remains sound.

In many cases, an individual tile or a limited section can be removed and replaced. Matching, cure time, access, and repair method depend on the tile type, location, and condition of the underlying fiberglass.

Yes. Tile color, texture, sizing, and production batches can change or be discontinued, so owners and contractors should retain spare tile from the original project whenever possible.

Use nonabrasive, material-compatible cleaners and follow the tile, grout, and NESPA care instructions. Avoid harsh acids, aggressive solvents, metal tools, and abrasive pads unless the specific finish manufacturer approves them.

Many natural stone and slate products are porous and may require sealing or specialized cleaning. Requirements vary by stone, sealer, grout, water chemistry, and exposure, so follow the approved material manufacturer's instructions.

Begin with the mildest cleaner and method approved for the installed tile and grout, using a soft cloth, sponge, or nonabrasive pad. Acidic scale removers can damage natural stone, grout, metals, and equipment, so consult NESPA before using them.

High-quality tile is generally color-stable, but grout and porous stone can stain or discolor from minerals, contaminants, chemicals, sunlight, or improper water balance. Regular cleaning and correct water chemistry help preserve the original appearance.

Stop using the affected area, avoid pulling on the tile, and document the condition with clear photos. Contact NESPA, the dealer, or the responsible service provider with the spa identification numbers so the condition can be evaluated.

The Contractor Series is a line of factory-manufactured tiled fiberglass spas designed for integration into contractor-managed residential and commercial projects. It gives the project team a defined spa platform with selectable layouts, finishes, equipment, covers, and completion levels.

It is designed for pool builders, general contractors, developers, architects, designers, dealers, and homeowners working with qualified construction professionals. The series is especially useful when the spa must coordinate with a larger pool, deck, landscape, or building project.

NESPA's current Contractor Series families include Acapulco 2, Acapulco 4, and Legacy configurations. Current sizes, options, and availability should be confirmed with NESPA when the project is quoted.

Acapulco 2 uses a corner-entry layout, Acapulco 4 uses a centered step configuration, and Legacy uses a full-wall step or extended entry arrangement. Each layout creates a different balance of entry access, seating, and usable interior space.

Complete is the most factory-finished configuration, Partially Complete provides the tiled spa interior while leaving more project integration to the contractor, and Bespoke is tailored to specialized design requirements. The written proposal defines the exact factory and site scope for each option.

A Complete spa includes the factory-installed components and equipment identified in the approved proposal and is intended to minimize onsite assembly. It still requires proper placement, foundation, final utilities, code compliance, surrounding construction, startup, and any excluded site work.

A Partially Complete spa generally provides the manufactured fiberglass shell and completed interior tile finish, with selected plumbing, equipment, exterior, or site-integration work left to the contractor. The quotation and shop drawings must clearly identify the division of responsibility.

Bespoke projects may allow custom dimensions, shapes, seating, steps, jet layouts, equipment, controls, lighting, tile, cover integration, and access arrangements. Feasibility depends on engineering, manufacturing limits, code requirements, schedule, and budget.

Yes, these selections can be reviewed during design coordination, subject to compatibility and manufacturing approval. NESPA may recommend alternatives when a requested item is unsuitable for submerged use, performance requirements, service access, or the selected model.

NESPA matches the equipment package to the spa's size, water capacity, jet count, plumbing arrangement, intended performance, operating climate, electrical supply, and project requirements. This avoids treating every spa as though it has the same hydraulic and heating demands.

Contractor-supplied or specified equipment may be considered during project coordination. NESPA must review compatibility, hydraulic performance, electrical requirements, controls, warranty responsibility, and the division of installation and service scope before approval.

Depending on the model and project, equipment may be integrated within the spa assembly or placed in a remote equipment area. Remote installations require coordinated plumbing sizes, distances, elevation, drainage, ventilation, electrical service, and maintenance access.

Yes, selected Contractor Series configurations can be designed to accommodate an automatic cover. The cover system must be planned before production because it affects the shell, lip dimensions, tracks, housing, controls, drainage, and service access.

An automatic cover requires additional side and rear space for tracks, hardware, and the cover housing; NESPA's typical planning dimensions use approximately 15-inch side lips and a minimum 32-inch rear lip. Final dimensions must come from the approved shop drawings for the specific spa and cover system.

A main-drain option may be available when required by the project design and approved configuration. NESPA's typical planning information adds approximately 7 inches to the overall dimension, but the final footprint, suction design, plumbing, and code requirements must be confirmed on the project drawings.

The nominal size describes the usable interior spa area, while the exterior envelope includes the shell, tile buildup, insulation, Poly-Metal structure, lips, plumbing, equipment, access doors, automatic-cover components, and optional main drain. Always build from the approved exterior dimensions, not the nominal model name.

Typical contractor responsibilities include permits, engineering, foundation or vault construction, drainage, delivery access, unloading or crane work, utilities, bonding and grounding, surrounding finishes, final connections, inspections, and commissioning. The signed proposal should be used as the final scope document.

The project must provide a level load-bearing foundation, controlled drainage, required clearances, accessible equipment and cover components, correctly sized utilities, and safe delivery access. These items should be coordinated against the approved shop drawings before the spa is released for shipment.

NESPA can provide project-specific drawings and technical information appropriate to the selected scope. The contractor and design team remain responsible for field verification, structural design, local-code compliance, and integrating NESPA's information into the complete project.

NESPA performs production inspections and testing appropriate to the spa's completion level and approved scope before shipment. The receiving party must also inspect the unit at delivery and document any visible shipping damage before unloading or installation proceeds.