A floor flatness survey is a measurement process used to evaluate how level and flat a concrete slab surface is. Using precision elevation equipment, we collect data points across the floor and convert them into actionable reports that identify high and low areas, slopes, and areas that may require grinding or leveling.

Floor flatness surveys are commonly used for:

• Flooring installations (tile, resilient flooring, polished concrete, etc.)
• Compliance with project specifications
• Diagnosing slab problems before renovations
• Estimating floor prep quantities
• Resolving disputes between trades
• Documenting existing conditions

If a floor “looks wavy,” doesn’t meet spec, or is causing installation issues, a survey provides objective, third-party data.

We can perform ASTM E1155 FF/FL testing when required.
However, many projects benefit more from elevation mapping surveys, which:

• Cover the entire floor instead of sample lines
• Identify specific problem areas
• Provide visual heat maps and actionable repair plans

For troubleshooting or floor prep planning, elevation mapping is often more useful than traditional FF/FL testing.

We use professional-grade precision instruments such as:

• Digital elevation levels
• Laser levels
• High-accuracy ZIPLEVEL^® systems
• Data collection software

The method used is selected based on project requirements, accuracy needs, and site conditions.

Typical accuracy ranges from ±1/16″ to ±1/32″, depending on the equipment and method used.

Our reports clearly state:

• Measurement method
• Grid spacing
• Accuracy tolerances
• Limitations of interpolation

Most surveys are performed on a grid pattern, commonly:

• 5 ft
• 10 ft
• 1 ft (for detailed troubleshooting)

The grid spacing is chosen based on project size and required detail.

Standard reports include:

• Color-coded elevation maps
• Action Maps showing where to grind or fill
• Cut/fill quantity calculations
• Pass/fail maps based on project tolerances
• Raw data files (CSV/XLS)
• PDF summary reports

Custom deliverables can be created to match owner or architect requirements.

No. Contour maps display interpolations between actual measured points.

Only the surveyed grid locations represent true measured elevations. The maps are visual tools to help interpret trends and plan corrective work.

This is standard practice in the industry, and our reports clearly note this limitation.

Sometimes – but not always.

• For specification compliance at new construction: FF/FL testing may still be required.
• For renovations, floor prep planning, and problem diagnosis: elevation mapping is usually superior.

We can help determine which method is most appropriate for your project.

Yes. One of our most valuable services is converting elevation data into:

• Estimated fill volumes
• Grinding quantities
• Material budgeting
• Repair maps for contractors

This allows accurate bidding instead of guesswork.

We routinely survey projects ranging from:

• Small retail spaces
• Warehouses
• Hospitals
• Data centers
• Schools
• Large industrial facilities

No project is too small or too large.

Typical timelines (10ft. grid spacing):

• 5,000 SF: 2-3 hours
• 20,000 SF: 4–6 hours
• 100,000+ SF: 2–3 days

Report turnaround is typically 1-2 business days, depending on project complexity.

Ideally yes. The floor should be:

• Clean
• Accessible
• Free of trades and materials
• Not actively being worked on
• That being said, we can work around trades and materials if needed

Obstructions reduce data quality and increase time on site.

Yes – we can survey:

• Bare concrete
• Finished floors
• Existing occupied spaces

However, carpeting or thick coatings may affect measurement methods.

Common industry tolerances include:

• 1/8″ in 10 ft
• 3/16″ in 10 ft
• 1/4″ in 10 ft

We can help interpret project specifications and recommend realistic targets based on floor type and end use.

Yes. We frequently act as an independent third party to:

• Verify compliance with specs
• Determine responsibility for floor prep
• Provide objective documentation
• Support RFIs and change orders

Our reports are unbiased and data-driven.

Pricing depends on:

• Project size
• Grid spacing
• Required accuracy
• Travel requirements
• Reporting complexity

Contact us with project details for a quick quote.

Simply provide:

• Project address
• Approximate square footage
• Desired grid spacing or tolerance
• Access availability
• Timeline requirements

We’ll handle the rest.