Resinous Flooring
Corpus sync: neutrality remakes, note hygiene, datasheet relocation, transformer-split cross-refs
Showing changes from Rev 5
to Rev 6
in Resinous Flooring.
---
title: Resinous Flooring
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## Closeout Submittals {toc}
−### Provide the following at project closeout: {note}
+### Provide the following at project closeout:
- Manufacturer system warranty documentation, executed in the Owner's name
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### The resin chemistry is the most consequential single decision in a resinous floor; it determines chemical resistance, thermal-shock tolerance, cure speed, UV stability, and cost. {note}
+### The chemistry shall be selected for the service environment and shall be indicated in the [[drawing: finish schedule]].
+
```datasheet
label: Resin Chemistry
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default: "Epoxy — general-purpose chemical and abrasion resistance"
```
−
−### The chemistry shall be selected for the service environment and shall be indicated in the [[drawing: finish schedule]].
### Epoxy is the default and most widely specified resinous chemistry. It bonds aggressively to concrete, offers broad chemical and abrasion resistance, and is the lowest-cost system for general commercial and light-industrial service; its limitations are sensitivity to ambient temperature during cure, a tendency to amber and chalk under direct UV exposure, and limited thermal-shock tolerance, which is why epoxy bodies are routinely finished with a more durable topcoat. Polyurethane, specifically aliphatic polyurethane, is more flexible, more abrasion- and chemical-resistant, and color-stable under UV, and is most commonly specified as the topcoat over an epoxy body rather than as the full system. Cementitious urethane — also called urethane mortar or polyurethane concrete — is a thick, trowel-applied mortar whose coefficient of thermal expansion closely matches concrete, giving it the highest thermal-shock resistance of any resinous system; it withstands steam cleaning, hot washdown, and freeze-thaw cycling and resists aggressive food acids, which makes it the standard for USDA-inspected food and beverage processing, commercial kitchens, and similar wet, hot, and chemically aggressive environments. Methyl methacrylate cures by a fast exothermic reaction in roughly one to two hours even at low temperature, allowing return to service the same day and installation in freezers and coolers; its drawbacks are a strong monomer odor and flammability during application that demand ventilation and ignition control. Polyaspartic, a fast-curing aliphatic chemistry related to polyurea, combines rapid return to service with excellent UV stability and is specified as a fast-track coating or as a topcoat where a same-day or next-day turnover is required. {note}
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options:
- "None — standard insulative floor (no ESD requirement)"
− - "Static-dissipative — resistance to ground 1.0 x 10^6 to less than 1.0 x 10^9 ohm"
− - "Conductive — resistance to ground less than 1.0 x 10^6 ohm"
+ - "Static-dissipative — resistance to ground 1.0 x 10^6 to less than 1.0 x 10^9 Ω"
+ - "Conductive — resistance to ground less than 1.0 x 10^6 Ω"
default: "None — standard insulative floor (no ESD requirement)"
```
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### Where the project includes an ESD-protected area — electronics manufacturing or assembly, certain laboratories, and munitions or flammable-vapor environments — the floor shall be a static-dissipative or conductive resinous system with an embedded grounding network, selected to meet the program's ANSI/ESD S20.20 control limits.
−### A static-dissipative floor shall have a resistance to ground per ANSI/ESD STM7.1 of at least 1.0 x 10^6 ohm and less than 1.0 x 10^9 ohm; a conductive floor shall have a resistance to ground of less than 1.0 x 10^6 ohm.
+### A static-dissipative floor shall have a resistance to ground per ANSI/ESD STM7.1 of at least 1.0 x 10^6 Ω and less than 1.0 x 10^9 Ω; a conductive floor shall have a resistance to ground of less than 1.0 x 10^6 Ω.
### The choice between dissipative and conductive shall follow the governing ESD control program.
### The floor specification shall be coordinated with the footwear and grounding program rather than treated in isolation.
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## The Contractor shall deliver to the Owner a sealed manufacturer touch-up or repair kit for each resinous system and color installed, sufficient to repair localized damage, labeled with the system, color, and batch information, and stored in the conditioned environment the manufacturer recommends.
## Because a resinous floor is mixed and cured on site, a later repair made with off-the-shelf material will rarely match the color and gloss of the original; a repair kit from the original system and color is the only practical way to make an inconspicuous repair, and resin shelf life means the kit should be used within the manufacturer's stated storage period. {note}