Flooring Failures

Flooring Failures: What We Can and Can't Say

Excess moisture and high pH in concrete are real causes of flooring failure, and manufacturers' limits exist for good reason. A claim repeated across the industry is that moisture and pH are the leading cause of failures but this is not supported by any independent, systematically collected dataset. The same applies to annual billion-dollar or other failure cost figures, which circulate without a stated source, definition of failure, or method.

 

The reason is structural. The failure data that exists is held confidentially by manufacturers and contractors, and most commercial failure claims are resolved under non-disclosure agreements (NDAs). No one is positioned to publish a representative picture, so rankings and dollar figures rest on anecdote and inference.

 

Attribution also follows diagnostic capability. Where the only available testing capabilities are limited to moisture meters or qualitative pH paper, moisture is the only test finding available, and any cause ranking built on those reports reflects what the inspector or others could detect as much as what occurred. 

 

Distinguishing moisture from chemical migration, contamination, material incompatibility, substrate condition, workmanship, or design error requires analysis beyond those instruments. 

 

Forensic failure analysis at FloorSciences builds upon the foundational, interdisciplinary methods under the jurisdiction of ASTM E30 Forensic Science and E58 Forensic Engineering. Implementing these standards lays the necessary methodological groundwork, establishing the systematic baseline from which specific Root Cause Analysis (RCA) testing can proceed.

 

In FloorSciences' commercial and industrial casework, moisture and pH are frequently not the root cause of failure investigations. This reflects our own caseload, which is drawn from disputes referred for forensic analysis, and we do not present it as an industry-wide rate.

 

The lists below organize commonly reported conditions by systems and components: floor coverings, adhesives, resinous coatings, underlayments and toppings, concrete substrates, and terrazzo. They are followed by the consequences failures produce and the mechanisms that cause them. No symptom on these lists is diagnostic of a single cause. Each can result from moisture, chemistry, materials, workmanship, substrate condition, or design, and identifying which one requires investigation, not assumption.

 

Floor Coverings (resilient sheet & tile, LVT/LVP, rubber, carpet tile)

• Adhesive bleed-through
• Backing delamination or zippering (carpet tile)
• Blistering and bubbling
• Bond failure, lifting, and delamination
• Discoloration, staining, and blushing
• Edge curling and corner lifting
• Gapping and seam separation
• Indentation and telegraphing of substrate defects
• Loss of gloss, surface degradation, and premature wear
• Odor
• Peaking at seams and joints
• Plasticizer-related staining or ghosting
• Shrinkage and dimensional instability
• Tunneling, rippling, and buckling

 

Adhesives

• Brittleness and cracking
• Improper coverage
• Insufficient transfer to the covering back or substrate
• Loss of bond strength
• Softening, tackiness, or failure to cure
• Staining or discoloration at the bond line

 

Resinous Coatings (epoxy, polyurethane, polyaspartic, polyurea, urethane cement, methyl methacrylate (MMA), vinyl ester, polyester, silicate, and other specialty systems)

• Amine blush and surface haze
• Chemical attack, softening, and etching
• Cracking and crazing
• Delamination and peeling
• Discoloration, yellowing, and chalking
• Fisheyes and cratering
• Hot-tire pickup
• Loss of gloss
• Loss of slip resistance
• Osmotic blistering
• Outgassing pinholes and craters
• Wear-through and abrasion damage