Polygem LCR Concrete Crack Repair Kit: Complete Epoxy Injection Kit

A complete epoxy injection kit for DIY foundation crack repair. It's made by Polygem and sold by CBG SOURCING, an authorized Polygem distributor. It goes further than a surface concrete crack filler: the paste mounts the ports and seals the crack surface, and the low-viscosity resin bonds the crack from the inside. It's for dry, non-actively leaking cracks in poured concrete walls and slabs.

Our kit has an updated package look, and it now includes 3 pairs of disposable nitrile gloves and 2 putty knives, each 1-1/2 in (38 mm) wide. The rest of the kit is unchanged.

At a Glance

• Best for: concrete cracks above .005" (0.13 mm) in basement foundations and other concrete. Engineered for cracks about 1/16 in (1.6 mm) to 1/8 in (3.2 mm) wide.
• Orientation: vertical foundation walls (ports mounted with the included paste) and horizontal slabs.
• Surface: clean and dry. Do not install the paste on damp or wet surfaces.
• Skill level: DIY. Everything except a standard caulking gun and basic tools and safety gear is in the box.

Coverage

• Complete kit (2 cartridges): up to 8 linear ft (2.4 m) of a 1/16 in (1.6 mm) crack, which suits a typical 8 ft (2.4 m) basement wall crack, or up to 4 linear ft (1.2 m) of a 1/8 in (3.2 mm) crack.
• Single 10 fl oz (296 mL) cartridge: about 4 ft (1.2 m) of a 1/16 in crack or 2 ft (0.6 m) of a 1/8 in crack, in a standard 6 in (152 mm) thick wall.
• Wider cracks, thicker walls, or unseen internal voids need more resin.

What's Included

• 2 × 10 fl oz (296 mL) Polygem LCR injection resin cartridges (Part A + Part B)
• 1 Polygem LCR Epoxy Repair Paste set: 1 lb (454 g) Part A + 1 lb (454 g) Part B
• 7 white surface injection ports with caps (about 1-1/2 in (39 mm) tall, 1-1/8 in (29 mm) four-hole base)
• 1 mixing plunger and 1 injection nozzle per cartridge (2 sets)
• 3 pairs of disposable nitrile gloves
• 2 putty knives, each 1-1/2 in (38 mm) wide
• 6 wooden mixing sticks
• Step-by-step instructions

Not included (required): standard caulking gun (not sold on CBGSourcing.com). Also bring: safety glasses or goggles, a floor or drop cover, tape measure, pencil or marker, wire brush, vacuum, compressed air, and other PPE as the SDS directs.

How It Works

• Ports: the first port goes 6 in (152 mm) from the floor, then no more than 12 in (305 mm) apart, with a paste band at least 2 in (51 mm) wide centered on the crack.
• Let the ports tack up for 30–90 minutes (depending on room temperature) before sealing the crack line. Inject each mixed cartridge within 30 minutes.
• After 48 hours of resin cure, remove the ports with a pallet knife and hammer or an oscillating multi-tool.

Watch the full step-by-step video: How to Use the Polygem LCR Epoxy Concrete Crack Repair Kit. It covers inspection, prep, port placement, paste, mixing, bottom-up injection, curing and finishing.

Specs: LCR Epoxy Injection Resin

Values after 7 days at 73°F (23°C), per the Polygem technical bulletin.

• Viscosity: 580 cps (low viscosity, LV)
• Tensile strength: 5,868 psi · Compressive strength (ASTM D-695): 7,908 psi · Shore D hardness (ASTM D2240): 80D
• Pot life (100 g, ASTM D-2471): 55 min · Working time: 30 min · Thin-film set: 2–3 hrs · Full cure: 24 hrs (slower in damp or cool conditions; do not put into service until fully cured)
• Application: do not install below 40°F (4°C) or above 90°F (32°C) surface temperature · Storage: 72°F (23°C)
• Dispensing: standard caulking gun with slow, even pressure · Cleanup (uncured): isopropyl alcohol or acetone

Specs: LCR Epoxy Repair Paste

• Tensile strength (ASTM D-638): 2,323 psi · Compressive strength (ASTM D-695): 6,798 psi · Shore D hardness: 81D · Heat deflection (ASTM C882): 115°F (46°C)
• Mix ratio: 1A to 1B by volume · Heavy paste, grey · Pot life (100 g): 60 min · Working time: 30 min (thin film 1 hr)
• Full cure: 24 hrs before removing clamps, sanding, painting, or putting an anchor or patch into service
• Application: 72–90°F (23–32°C); do not install on damp or wet surfaces

Pairs With

• Inside corners: Polygem LCR Corner Injection Ports (7-Pack)
• More ports: Surface 7-, 50- and 100-Packs
• More resin and paste: single cartridge, 2-Pack, 3-Pack, and LCR Epoxy Repair Paste
• Cleanup: Handy Jack® Heavy-Duty Cleaning Wipes (60 Count)

Documentation & Shipping

Read the labels and SDS before use. We ship to the 48 contiguous states; see our Shipping & Payment Policy.

Technical documents (Polygem)

• LCR Epoxy Injection Resin technical bulletin (PDF)
• LCR Epoxy Repair Paste technical bulletin (PDF)
• Safety data sheet 10004207-10004211 (PDF)
• Safety data sheet 10004198-10004203 (PDF)

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