Pool and Spa Design
Moving the spa after the pool shell is poured can require changes to the cover box, pipework and plant-room layout. Draw the pool and spa together, recording use, water levels, cover travel and equipment access before the shell is fixed. This page supplies a layout brief for built-in aquatic spas, not salon interiors.
How do you choose a pool–spa layout?
Start with use: swimming, play, heated soaking and quiet seating. Mark the proposed waterline and bench position for each body, then draw the cover travel rectangle and housing. A raised weir or offset spa needs its own cover review; a flush spa does not automatically fit a shared cover.
Use the four layout rows below as a blank brief. Fill in the levels, circulation arrangement and cover decision for your project; leave unresolved items marked to confirm.
For an elevated spa sharing the pool circulation, review the spillover spa hydraulic loop and check-valve record to verify valve changeover, pump-off reverse paths and weir-scale control before commissioning.
Does a remote spa require a second plant?
Not merely because it is remote. A manufacturer’s public IntelliCenter installation guide distinguishes shared-filtration pool–spa combinations from dual-equipment systems (p. 17). This is a control-system example, not approval for sharing equipment on any site.
Ask the aquatic designer to confirm connected versus isolated water, pipe route, required flow and head, heating loads and control modes. Separate water or simultaneous temperature duties may call for separate equipment; location alone does not establish a doubled plant or two covers. Cover count follows the openings and the accepted travel geometry.
A cold plunge next to a warm spa needs its own loop. Temperature bands, separate circulation and the exit are in the cold plunge and contrast-therapy integration note.
What changes between a house and a hotel?
Record who swims, who soaks and who closes the water. For a hotel, add family and quiet-zone hours, staff responsibility and service access. Keep these operating decisions on the same drawing as the pool–spa relationship rather than repeating them in separate briefs.
Before the architectural edge is fixed, reconcile the housing, circulation sketch and operating notes. If a later drawing moves the spa, update those records together.
Copyable pool and spa layout brief
Scroll horizontally to see all columns →
| Layout option | Levels / use to record | Circulation / heat to confirm | Cover / drawing record |
|---|---|---|---|
| Raised spillover spa | Waterlines / weir / use: ____ | Shared or isolated water / operating modes: ____ | Cover path / winter plan / drawing: ____ |
| Flush spa | Waterlines / seats / use: ____ | Shared or independent duties: ____ | Shared-cover geometry accepted by: ____ |
| Remote spa | Location / privacy / access: ____ | Connection / pipe route / heat load: ____ | Each opening / cover arrangement: ____ |
| Hotel dual-use deck | Family / quiet / hours: ____ | Circulation requirements / operator: ____ | Housing / closer / drawing: ____ |
Related hubs
- In-Ground Spa Design
Outdoor built-in spa seating, depth, jets, heating, and insulation for pools and standalone spas.
- Automatic Pool Covers
Types, tracks, retrofit versus new-build, spa covers, safety, and energy for specifying an automatic pool cover.
- Pool and Spa Equipment
Pumps, heating, automation, and plant-room interfaces for residential and commercial pools.
Standards to verify
- Manufacturer public installation guidance: shared and dual equipment
IntelliCenter installation guide, p. 17. Accessed October 8, 2026. Shows system arrangements, not a recommendation or site-specific hydraulic design.
- Built-in spa seating and hydraulic review
Existing journal checklist for bench sections, suction and design responsibility.
- Raised spillover spa coordination
Existing journal worksheet for the weir, operating modes and cover interface.
Questions
- Is this the same as spa design for a day spa?
- No. This page concerns built-in aquatic spas and pool combinations, not salon or massage-room interiors.
- Should the spa share the pool cover?
- Only where the opening, levels and cover travel have been accepted for that system. Record a separate cover decision when the spa lies outside the travel path; do not infer it from a flush waterline alone.