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Adhesives Technology Convergent Pentra-Sil (AC) 5 Gallon Pail
Designed for use on sweating, efflorescing or high pH surfaces. This unique product neutralizes the surface and reduces sweating and vapor drive that carries alkaline salts to the surface of the concrete.
- Reduces sweating
- VOC compliant
- Densifies and hardens the surface
$204.24
SKU
20087
Convergent Pentra-Sil AC – 5 Gallon Pail
Pentra-Sil AC is a lithium based alkalinity control treatment for concrete that helps stop slab sweating and efflorescence. It neutralizes high pH at the surface, reduces vapor drive that carries salts to the top of the slab, and also densifies and hardens to improve abrasion resistance. For difficult cases, first treat with Pentra-Sil C&N and then follow with Pentra-Sil AC.
Key Features
- Reduces sweating and visible efflorescence on interior or exterior slabs.
- Neutralizes surface alkalinity and reduces vapor drive.
- Densifies and hardens the surface to increase abrasion resistance.
- Breathable, VOC compliant, low odor, dries clear.
- Simple spray application with scrub in and rinse off.
- Pairs well with Pentra-Sil C&N where symptoms are severe.
Applications
- Warehouses, distribution, manufacturing, and mechanical rooms.
- Retail, schools, offices, healthcare, and public common areas.
- Parking garages, sidewalks, driveways, loading docks, and lobbies.
- Aircraft hangars, auto service bays, fire stations, and stadiums.
- Food and beverage, pharmaceutical, chemical, wastewater, and cold storage facilities.
Technical Specifications
| Packaging (this item) | 5 gal pail. Also available in 1 gal, 55 gal drum, and 275 gal tote. |
| Appearance / Odor | Opaque liquid that dries clear; slight to no odor. |
| Total Solids / VOC | 7.4% solids; VOC < 50 g/L. |
| pH / Specific Gravity | pH 11–12; specific gravity 1.05. |
| Estimated Coverage | Machine troweled: 400–550 ft² per gal. Broom finished: 250–350 ft² per gal. |
| Application Conditions | Apply when temperatures remain above 40°F for at least 2 hours after application. |
| How to Apply | Spray evenly and scrub in with an auto scrubber or stiff broom. Keep the surface wet with product for at least 20 minutes. Rinse and remove all residue with clean water. Surface is ready for use when dry. |
| Cleanup | Soap and water. |
| Shelf Life / Freeze Point | 1 year unopened. Freeze point 32°F. |
| Limitations | May not resolve all sweating or efflorescence problems. Use Pentra-Sil C&N prior to AC for difficult symptoms. Will not bridge cracks or fix unsound surfaces. Not for asphalt, non cement, or painted substrates. Paint and coatings may be applied over treated surfaces after drying. |
Frequently Asked Questions
What problems does Pentra-Sil AC address?
High surface pH that draws moisture to the surface and carries salts which form efflorescence and cause slab sweating. AC neutralizes the surface and reduces vapor drive.
How is it applied?
Spray, scrub into the surface, keep wet with product for about 20 minutes, then rinse and remove all residue. Let the surface dry before returning to service.
When should I also use Pentra-Sil C&N?
For persistent or severe alkalinity symptoms, first clean and neutralize with C&N, then follow with AC.
Is it breathable and low VOC?
Yes. The treatment is breathable and VOC content is below 50 g/L.
Will it fix cracks or unsound areas?
No. Repair cracks and unsound concrete before treatment; AC will not bridge defects.
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