Large-format tile creates a clean, continuous look in commercial lobbies, common areas, and public spaces. A successful installation starts with a properly prepared substrate, a planned layout, and setting materials suited to the tile and its intended use. ATR Floors installs large-format tile across the Twin Cities Metro, with attention to mortar coverage, joint alignment, and consistent transitions between tiles.
Surface Preparation
Substrate flatness addressed before installation
Planned Layout
Coordinated tile placement, cuts, and joint alignment
Careful Setting
Attention to mortar coverage and tile alignment
The problem
Even minor substrate variation can create lippage, poor mortar coverage, and visibly uneven large-format tile.
How ATR solves it
ATR maps and corrects the substrate before setting to meet the tighter tolerance large tile requires.
The problem
Oversized tile and gauged porcelain panels are vulnerable to breakage, voids, and alignment errors during installation.
How ATR solves it
ATR uses the equipment, handling plan, mortar coverage, and crew coordination required for large units.
The problem
Substrate movement can transfer across a large tile field and produce expensive failures.
How ATR solves it
ATR evaluates repair, membrane, movement-joint, and setting requirements before installation.
The problem
Large-format tile thickness and buildup must meet adjacent carpet, resilient, wood, or concrete finishes cleanly.
How ATR solves it
ATR coordinates elevations and transitions with the rest of the commercial flooring package.
Large-format tile brings a clean, cohesive look to commercial spaces. Fewer grout lines and a broad range of finishes give designers flexibility to create welcoming lobbies, connected common areas, and distinctive interiors.
Larger tiles reduce the number of grout joints across a surface, creating a less interrupted appearance.
Stone, concrete, and other available looks complement a range of commercial interiors.
Thoughtful layouts carry the design through open areas and adjoining spaces.
For tiles 15 inches or longer on any side, substrate variation must not exceed 1/8 inch in 10 feet. For gauged porcelain panels on premium hospitality projects, 1/16 inch in 10 feet is common. Most existing commercial slabs don't meet these tolerances without preparation — we level with cementitious self-leveling underlayment when they don't.
Substrate flatness verified, mortar coverage verified, lippage tolerance enforced with leveling systems on every install.
Cementitious self-leveling pour to correct flatness — no surprise change orders when the slab doesn't meet tolerance.
48x48 and 48x96 panels installed with vacuum-cup lifting systems and trained two-person crews.
Crack isolation membranes standard on renovation projects and where TCNA spacing recommendations are exceeded.
For tiles with any side 15 inches or longer: 1/8 inch maximum variation in 10 feet per ANSI A108.02. For gauged porcelain panels on premium hospitality projects: 1/16 inch in 10 feet is common. We measure before installation and level with cementitious underlayment if the substrate does not meet the standard.
In some cases, yes — if the existing tile or terrazzo is sound, well-bonded, and flat enough to meet the tolerance requirements. We assess the existing surface for hollow spots, delamination, and flatness. If removal is required, the Clean Slate Process handles it without grinding dust.
Gauged porcelain panels (48x48, 48x96, and larger) require specialized handling equipment (vacuum-cup lifting systems), a minimum two-person setting crew, and extremely flat substrates. We install them in hospitality lobbies, corporate common areas, and high-design commercial spaces.
Retrofit projects over aged concrete almost never meet the flatness tolerances large-format tile requires. We pour cementitious self-leveling underlayment to create a flat, level surface. The pour typically adds 1/4 to 1/2 inch of substrate height and achieves FF 30 to 40 flatness numbers — well within the ANSI tolerance.
ATR provides a 2-year workmanship warranty on installation covering adhesion, grout integrity, and substrate leveling performance. Tile and grout manufacturers provide separate material warranties.
Include tile size, sq ft, substrate type, and project schedule. We respond within one business day.
