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Adhesives Technology Convergent Pentra-Sil (244+) 5 Gallon Pail
Pentra-Sil (244+) is a Nano-Lithium hardener, densifier, and hydrophobic sealer for concrete that needs salt, freeze-thaw, and chloride defense.
- Wait 7 days after placement; not a time-of-placement densifier
- Penetrating and breathable, no film to peel
- NCHRP 244 chloride protection intent in a single application
$424.85
Adhesives Technology Pentra-Sil (244+) Lithium Densifier Sealer, 5 Gallon Pail
Pentra-Sil (244+) from Adhesives Technology is a Nano-Lithium hardener, densifier, and hydrophobic sealer for existing concrete and masonry. It is built for salt, freeze-thaw, moisture, and chloride exposure on parking decks, sidewalks, and industrial slabs. The penetrating, breathable treatment dust-proofs and hardens without a film to peel. Wait at least seven days after placement before applying.
Key Features
- Hardens, densifies, and dust-proofs existing concrete
- Protects against salt, freeze-thaw, moisture, and chlorides
- Penetrating and breathable; no film to lift or peel
- Low odor spray; no rinsing on many placements
- Does not contribute to surface ASR or promote crazing
- Not for time-of-placement; wait 7 days after pour
Applications
- Parking garages, pool decks, sidewalks, and driveways
- Loading docks, hangars, and vehicle maintenance areas
- Existing exterior and interior concrete needing chloride defense
- Polished floors when paired with a compatible lithium finish
Technical Specifications
| Property | Value |
|---|---|
| Product | Pentra-Sil (244+) lithium hardener, densifier, and sealer |
| Part Number | CCT-060-5 |
| Chemistry | Nano-Lithium densifier with reactive silicone |
| Form / Color | Liquid; red tint, dries clear |
| Coverage | Machine-troweled 600-800 ft²/gal; broom 250-350 ft²/gal |
| Film-Forming | No |
| Application Method | Sprayer; keep wet 20 minutes |
| Standard | Meets NCHRP 244 for chloride intrusion |
| Total Solids | 17.1% |
| VOC | <50 g/L |
| Freeze Point | 32°F (0°C) |
| Packaging | 5 gal pail (18.93 L) |
Product documents: Pentra-Sil (244+) Technical Data Sheet (PDF) | Pentra-Sil (244+) Safety Data Sheet (PDF)
Frequently Asked Questions
Can Pentra-Sil (244+) go down as a time-of-placement densifier?
No. Pentra-Sil (244+) is not recommended as a time-of-placement densifier. Wait a minimum of 7 days after the concrete is placed. The high solids can react with moisture in younger concrete and leave white staining.
Does Pentra-Sil (244+) leave a coating to peel later?
Pentra-Sil (244+) is a penetrating, breathable treatment with no film to lift or peel. It reacts with calcium hydroxide to form calcium silicate hydrate inside the slab. There is nothing to strip when the floor is maintained.
How does Pentra-Sil (244+) help against deicing salt?
Pentra-Sil (244+) combines Nano-Lithium densification with reactive silicone chemistry to meet the NCHRP 244 intent for chloride protection in a single application. Reduced permeability is the reason it is used on parking garages, pool decks, sidewalks, and driveways.
Will Pentra-Sil (244+) contribute to surface ASR?
The current Pentra-Sil (244+) sheet states it does not contribute to surface ASR or promote crazing. That is a reason to keep 244+ on exterior slabs that already have freeze-thaw and chloride exposure.
Is Pentra-Sil (244+) meant for loading docks and hangars?
Yes. Loading docks, hangars, and vehicle-maintenance areas are listed uses, along with parking garages and sidewalks. Those are existing slabs that need chloride and freeze-thaw defense, not a polish densifier.
Does Pentra-Sil (244+) need a rinse after placement?
Pentra-Sil (244+) is described as a low-odor spray with no rinsing on many placements. Follow the current 244+ sheet for residual material. Do not treat it as a film-forming sealer that has to be stripped.
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