Pentra-Guard® (EXT)


Pentra-Guard® (EXT) is an eco-friendly, exterior stone sealer for concrete, masonry and stone surfaces. It seals and protects against dirt, grime, salt and oil damage while enhancing the natural color and shine. This treatment creates a breathable, protective clear coat that is abrasion resistant and will not flake or peel. Pentra-Guard® (EXT) cures quickly and provides a hard, glossy, wet look finish to any exterior cementitious surface. This lithium-based solution is VOC compliant and easy to apply. Learn more about this Exterior Stone Sealer with ATC today!


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  • Enhances the color of concrete, masonry, and stone surfaces
  • Provides premium “wet look” finish
  • Adds durability and protection
  • Uses patented Nano-Lithium® technology
  • Rapidly cures with little to no downtime
  • Forms a protective microfilm that is breathable and will not peel or flake
  • Can be reapplied or recoated without stripping
  • Functions as anti-graffiti and stain protection for vertical and horizontal surfaces
  • Reduces maintenance and cleaning costs
  • VOC compliant, may contribute to LEED points (IEQ credit)
  • UV-stable: non-yellowing, non-staining


Application MethodSprayer
ColorWhite, dries clear
Coverage RateMachine-troweled: 800-1000 ft² (19.6-24.5 m² per liter)
Broom-finished: 300-500 ft² (7.4-12.3 m² per liter)
Freeze Point32 ºF (0 ºC)
OdorSlight ammonia-like odor
Shelf Life1 year in unopened, sealed container
Specific Gravity1.08
Total Solids29.60%
VOC Content<50g/L
SizePart No.Full Pallet Qty
1 Gallon JugCCT-081-1126
5 Gallon PailCCT-081-535
55 Gallon DrumCCT-081-554
275 Gallon ToteCCT-081-2751

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Available Packaging