Construction chemicals comparisons set 2 or 3 competing product classes side by side, and this index lists all 9 of them, from epoxy vs polyaspartic floor coatings to EIFS vs stucco. Which pair answers a project question, and why do other comparisons sit on product pages?
The 9 pairs fall into 4 families, from floor coatings to exterior walls, each judged against documents such as ANSI A118.3-2021 (R2025) and ASTM C920-18(2024), and each pair belongs to one family of construction chemicals.
A pair gets its own page only where search results show comparison pages; 12 further comparisons are answered on the page of the class they explain.
Standards, codes and regulations are checked against their issuing bodies, product values against the named data sheet and prices against the dated source named in the sentence; see our methodology and fact-checking.
What Is a Construction Chemicals Comparison?#
A construction chemicals comparison is a page that weighs 2 or 3 product classes competing for the same job on chemistry, governing standard, performance, application and cure, cost and the use case each fits, with a verdict table first. The classes share a job, such as sealing a moving joint, but differ in binder and cure. The class is compared, never a brand.
The 7 points every comparison page answers#
Every comparison page answers 7 points in the same order, listed below.
- Verdict table: the classes on the decision attributes in the page title.
- Chemistry difference: binder and cure mechanism.
- Performance and durability: class thresholds with the standard's edition.
- Application and cure: windows and cure times with temperature.
- Cost: dated, regional ranges with their basis.
- When to choose each: the job conditions favoring one class.
- The two product pages: one link to each class.
All 9 Construction Chemical Comparisons by Product Family#
The 9 construction chemical comparisons fall into 4 families: 4 floor and tile pairs, 2 sealant and roof coating pairs, 2 crack injection and slab lifting pairs and 1 exterior wall pair. The table below compares the 9 pairs by decision attributes, governing documents and one-line answer.
| Comparison | Family | Decision attributes | Governing documents (edition) | One-line answer |
|---|---|---|---|---|
| epoxy vs polyaspartic vs polyurea floor coatings | floors | UV, cure, build | no product standard (polyaspartic) | aliphatic polyaspartic holds color under UV; epoxy builds the base coat |
| epoxy vs polyurethane floor coatings | floors | hardness, flexibility, UV, chemical resistance | REACH Annex XVII entry 74 (polyurethane) | aliphatic polyurethane is the UV-stable topcoat; epoxy is the build coat |
| sealed concrete vs polished concrete | floors | finish, acceptance, maintenance | ACI SPEC-310.1-20 (polished) | polished is ground and densified to a gloss level; sealed carries a sealer film or treatment |
| epoxy grout vs cementitious grout | tile | strength, stain resistance, cost, use | ANSI A118.3-2021 (R2025); ANSI A118.7-2019 | A118.3 epoxy compressive > 24.1 MPa (3,500 psi) vs A118.7 cement > 20.7 MPa (3,000 psi) |
| polyurethane vs silicone sealants | sealants | substrate, UV, paintability, movement | ASTM C920-18(2024); EN 15651-1 to -4:2012 (harmonised) | same C920 movement classes; backbone and cure differ |
| silicone vs acrylic roof coatings | roof coatings | ponding water, standard, cost, recoat | ASTM D6694/D6694M-25; ASTM D6083/D6083M-24 | acrylic cures by evaporation and softens under ponding; silicone moisture-cures |
| epoxy vs polyurethane crack injection | injection | structural repair or leak seal | ASTM C881/C881M-20a Type IV; EN 1504-5:2004 F vs D, S | epoxy re-bonds dormant cracks; polyurethane seals leaks and is not structural |
| mudjacking vs polyjacking | slab lifting | weight, cure, cost | none (installer methods) | slurry about 1,600 kg/m³ (100 lb/ft³) vs foam 32 to 64 kg/m³ (2 to 4 lb/ft³), installer-stated |
| EIFS vs stucco | exterior walls | cost, drainage, impact resistance, codes | ASTM E2273-25, IBC 1407.4.1; ASTM C926-26, C1063-26, IBC 2512 | EIFS with drainage needs at least 90 % drainage efficiency |
Floor coatings, polished floors and tile grouts#
Four comparisons cover floors and tile: epoxy vs polyaspartic vs polyurea, epoxy vs polyurethane floor coatings, sealed vs polished concrete and epoxy vs cementitious grout. Polyaspartic coatings react an aliphatic polyisocyanate with a polyaspartic ester, giving UV stability, and no product standard covers the class. Aromatic epoxies yellow under UV, so the hybrid pairs an epoxy base coat with a polyaspartic or polyurea topcoat.
Aliphatic polyurethane topcoats hold color under UV. REACH Annex XVII entry 74 requires training since 2023-08-24 for products with 0.1 % by weight or more diisocyanates, while liquid epoxy resin (CAS 25068-38-6) carries Harmonised CLP Annex VI (index 603-074-00-8): H315, H317, H319, H411.
Polished concrete is ground, honed, densified, polished and guarded, with acceptance by ACI SPEC-310.1-20; sealed concrete carries a film or penetrating sealer, and grind and seal is a third option. Grinding falls under OSHA 29 CFR 1926.1153 (PEL 50 µg/m³ 8-h TWA).
ANSI A118.3-2021 (R2025) epoxy grout requires compressive strength above 24.1 MPa (3,500 psi) and shrinkage below 0.25 %, against above 20.7 MPa (3,000 psi) and below 0.20 % for ANSI A118.7-2019 cement grout.
Joint sealants and roof coatings#
Polyurethane and silicone sealants differ in backbone and cure but are classed by the same movement classes of ASTM C920-18(2024), from 100/50 to 12.5. Polyurethane moisture-cures as an organic prepolymer; silicone has an inorganic Si-O backbone.
Acrylic roof coatings (ASTM D6083/D6083M-24) cure by water evaporation and soften under ponding water, while silicone roof coatings (ASTM D6694/D6694M-25) cure with atmospheric moisture.
Crack injection and slab lifting#
Epoxy injection re-bonds dormant cracks as a structural repair (ASTM C881/C881M-20a Type IV, Grade 1), while polyurethane injection seals leaks in wet or active cracks and restores no structural capacity. ACI PRC-224.1-07 gives 0.05 mm (0.002 in) as the minimum injectable crack width.
Mudjacking slurry weighs about 1,600 kg/m³ (100 lb/ft³) and polyurethane lifting foam 32 to 64 kg/m³ (2 to 4 lb/ft³), both installer-stated values.
Exterior wall systems#
EIFS with drainage must reach an average drainage efficiency of at least 90 % by ASTM E2273-25 under IBC 1407.4.1, while stucco is governed by ASTM C926-26, C1063-26 and IBC 2512.
How Product Classes Are Selected for a Side-by-Side Page#
A pair gets its own comparison page only when the live search results for it show comparison pages; when they show explainers of one class, the comparison becomes a section of that class's product page. Mudjacking vs polyjacking is one pair whose results show comparison pages only.
The other branch covers chemical vs mechanical anchors on the anchoring hub, intumescent vs cementitious on the fireproofing hub and crystalline vs membrane on the waterproofing hub.
Comparisons answered on product and application pages#
Twelve further comparisons are answered on the page of the class they explain, listed in the table below.
| Comparison query | Owner page | Answered there as |
|---|---|---|
| crystalline vs membrane; sheet vs liquid | waterproofing membranes and systems | comparison section with verdict table |
| intumescent vs cementitious fireproofing | fireproofing types | hub comparison section |
| chemical vs mechanical anchors | chemical anchors and anchoring adhesives | hub section |
| caulk vs sealant | construction sealants | hub definition |
| positive vs negative side waterproofing | interior and negative-side basement waterproofing | application section |
| densifier vs sealer | concrete densifiers | class page section |
| silane vs siloxane sealer | penetrating sealers and water repellents | class page section |
| hydrophilic vs hydrophobic polyurethane injection | polyurethane injection resins | class page section |
| gunite vs shotcrete | shotcrete and sprayed repair mortars | wet vs dry process section |
| dampproofing vs waterproofing | dampproofing vs waterproofing | page title and full page |
| MMA vs epoxy flooring | MMA flooring | class page section |
| epoxy grout vs non-shrink grout | epoxy machinery grouts | class page section, distinct from the tile grout pair |
Standard requirements versus one product's data sheet#
A comparison states a class threshold as the standard's requirement and a product's figure as that named product's data-sheet value, never one for the other. The editions behind every threshold are listed under construction chemicals standards.
This index carries no single-product value; product values sit on the 9 comparison pages.
What Decides Between Two Construction Chemicals in a Specification?#
The job decides: the substrate, movement, exposure, cure window and code requirement set the class, and the specification then names it by standard and class, not by brand. Three of these factors are listed below.
- Movement: a joint designed for +100/-50 % needs an ASTM C920 Class 100/50 sealant.
- Crack type: a dormant structural crack takes ASTM C881/C881M-20a Type IV, Grade 1 epoxy.
- Code requirement: EIFS with drainage must meet IBC 1407.4.1.
Can EN, ANSI and ASTM test results be compared?#
Not number for number: ANSI tile standards test shear bond while EN standards test tensile adhesion, and no numeric conversion exists between them.
Slant-shear bond results (ASTM C882) and pull-off results (ASTM C1583/C1583M-25) are not comparable either, as set out under test methods for construction chemicals.
Does a comparison rank brands or manufacturers?#
No: a comparison ranks product classes against a standard, and a brand question is answered by what the class requires and where the data sheet or declaration of performance states it. No company pays for placement or is a partner.
Where are admixture and asphalt comparisons covered?#
Concrete admixture comparisons are covered on concreteadditives.net and asphalt sealer comparisons on asphaltadditives.net; neither is answered here.