Choosing a pool type is not about which material is “best” in the abstract, it is about your site, how you use the pool, how much customization you want, and how your schedule and budget line up. Along the Front Range, Rock N Roll Stoneworks installs Latham fiberglass pools and builds custom concrete and shotcrete pools, and we route homeowners based on those real-world constraints.
Fiberglass: speed, predictability, and factory quality control
Fiberglass pools arrive as a single engineered shell, craned into an excavated hole, leveled, plumbed, and backfilled per manufacturer detail. That workflow compresses weather-sensitive phases and gives you a very predictable interior surface from day one. If your goal is to swim sooner with a defined product line and vetted engineering, fiberglass is often the right tool.
Best fiberglass fits: straightforward access for a crane or boom, soils that can be prepared per spec without heroic retaining structures, and a homeowner who likes a model from the catalog (with still-meaningful choices in coping, tile, equipment, and surrounding pool deck pavers).
Shotcrete / concrete: customization and architectural freedom
Custom concrete pools, often shotcrete shells with steel reinforcement, shine when the design is the design: tight urban lots, dramatic depth changes, long benches, integrated spas, perimeter overflows, or a layout that follows an unusual property line. You trade some schedule and complexity for freedom of form and finish.
Best concrete fits: sites where fiberglass models do not match the available footprint, homeowners who want a unique interior finish or tile layout, and projects where the pool is one piece of a larger outdoor living composition (boulder water features, raised bond beams, outdoor kitchens) that all need to tie together structurally.
Colorado-specific considerations
Freeze-thaw and soils: Colorado’s clay-heavy soils and temperature swings reward careful compaction, drainage, and bond beam / deck integration, regardless of shell type. The shell choice does not remove the need for a disciplined hardscape and deck plan.
Altitude and UV: Decking and coping see intense sun. Lighter paver colors and slip-resistant textures matter for comfort and safety; see our pool deck paver guide.
Water chemistry: Salt chlorine generators are common. Quality finishes and correct deck drainage protect both fiberglass gel coats and concrete interiors when chemistry is maintained.
How to decide in one pass
If you want a proven model line, faster path to water, and simpler decision fatigue, start with fiberglass. If the conversation keeps returning to “we need it to bend around this retaining wall / this easement / this exact shape,” move the discussion toward shotcrete. In either case, book a site walk: we evaluate access, utilities, setbacks, and how the pool connects to patios, turf, and lighting before we commit to a shell strategy.
Ready to compare on your lot? Contact us for a free consultation, or dive into fiberglass and concrete pool pages for scope and imagery.
Frequently Asked Questions
Do fiberglass pools crack in Colorado freeze-thaw? Quality fiberglass shells are engineered as a monolithic structure with flexible finishes. Issues more often relate to decking, plumbing, or improper backfill than the shell itself. Concrete pools rely on steel and shotcrete engineering; both systems perform when built to manufacturer and structural specifications.
Which installs faster? Fiberglass typically has a shorter on-site construction window because the shell arrives pre-formed. Shotcrete or concrete pools require forming, steel, plumbing, shotcrete placement, and cure cycles before finishes, often a longer build calendar.
Can I get a vanishing edge or fully custom shape with fiberglass? Fiberglass offers many models and sizes but not unlimited geometry. Complex perimeter overflow or one-of-a-kind outlines are usually better served by a custom concrete or shotcrete pool.
