Frequently Asked Questions

Brentwood's clay underlayer expands when wet and contracts during dry periods, creating ground movement that shifts pavers and cracks rigid pool shells. Proper compacted aggregate base depth and drainage slope engineering compensate for this seasonal soil shift, preventing surface failure that appears within the first year when base prep is skipped.

Fiberglass pools use a factory-molded shell set into excavation with faster installation and no on-site curing, while gunite is steel-reinforced concrete sprayed on-site for custom shapes and features. Fiberglass shell flexibility absorbs minor ground movement in clay soils, whereas gunite allows freeform design, vanishing edges, and lot-specific engineering that prefab shells can't accommodate.

Base depth depends on lot grade, soil composition, and expected load — not a standard package across all installs. Brentwood's limestone-rich substrate with clay underlayer requires site-specific aggregate compaction depth to prevent paver shift and joint failure that occurs when geotechnical groundwork is skipped during installation.

Inadequate drainage slope engineering and insufficient compacted base depth allow water infiltration and soil movement beneath the surface. Middle Tennessee's freeze-thaw cycles and clay soil expansion accelerate this failure when contractors skip proper aggregate layering, producing the sunken spots and separated joints visible within the first two seasons.

Yes — delivering pool and hardscape as integrated disciplines eliminates the coordination gap and grade conflicts that surface when separate crews handle each phase. Pool placement, drainage engineering, and hardscape flow are planned together before excavation, preventing costly post-install revisions and finger-pointing between trades mid-build.

Gunite construction accommodates custom shapes, varied lot grades, and Franklin's limestone bedrock terrain through site-cast engineering that factory fiberglass molds can't match. Steel-reinforced shells are hand-finished on-site with depth and feature placement determined by property-specific excavation requirements, making gunite the default for challenging topography.

Slope is built into the design from day one to direct water away from pavers and pool surrounds, preventing subsurface saturation that destabilizes the compacted base. Without engineered drainage, Middle Tennessee's humidity and seasonal rainfall infiltrate the aggregate layer, causing the ground movement that produces visible paver shift and joint separation.

Pool placement, hardscape traffic flow, shade structure siting, and drainage engineering integrated into one coordinated plan before excavation starts. Addressing these elements together prevents the post-install revisions that happen when pool builders, hardscape crews, and outdoor living designers are contracted separately without unified project oversight.

Middle Tennessee's freeze-thaw cycles, humidity exposure, and extended warm season require surface materials engineered for regional conditions — not catalog defaults. Pavers, pool finishes, and outdoor structures that perform well in drier or milder climates fail prematurely here when thermal expansion, moisture resistance, and seasonal ground movement aren't accounted for during material specification.

The fiberglass shell's flexibility absorbs minor ground movement caused by clay expansion and contraction, whereas rigid concrete shells crack at stress points under the same conditions. This makes fiberglass a durable option for Brentwood and Franklin properties where seasonal soil shift is inevitable, reducing long-term surface repair needs.

Vanishing edges, raised spas, grottos, and beach entries are engineered directly into the steel-reinforced shell during on-site spraying — not added as aftermarket attachments. This integration allows feature placement to follow lot-specific grade and drainage requirements, producing the freeform designs that prefabricated fiberglass molds can't replicate.

Soil composition, lot grade, limestone layer depth, and existing drainage patterns are evaluated before design begins. This geotechnical assessment determines compacted base requirements for hardscaping, pool shell placement options, and whether retaining walls or slope correction are needed to prevent the structural failures that appear when site conditions are ignored.