ElastiPoxy Joint and Gap Filler Kit – Application

Coverage

Coverage is based on a filling a 1/4″ wide by 1/2″ deep crack or joint. ElastiPoxy can be used with or without sand depending on the type of void you are filling.

FLEXIBLE REPAIR (straight, without sand): 2-quarts will fill approximately 75 linear ft. (2-gallons fills approximately 300 ft.)

RIGID REPAIR (4:1 sand-to-ElastiPoxy ratio): 2-quarts will fill approximately 375 ft.

Surface Preparation

Before using ElastiPoxy the concrete or masonry surfaces must be clean. Remove ground-in dirt, paint, oils, grease, efflorescence, or bond-inhibiting contaminants. Air blow or shop-vac any loose debris or dust.

The surface may be slightly damp but a dry surface is preferred for best results. Surface temperature must be above 40 °F during the application and for 24 hours afterwards (see curing times below).

• Learn how this homeowner used ElastiPoxy to repair gouges, spalls, chipped edges, control joints, and cracks in a pool deck while matching the surface color and texture.

Crack or Joint Preparation

Narrow Cracks or Saw Cuts (< 1/4″) – The crack or joint should be at least 1/4” wide. If needed, chase cracks 1/2″ deep in floors or walls with a 4″ right-angle grinder, crack chaser diamond blade, or hammer chisel. Remove loose concrete and dust with air blower and/or shop-vac. Large Cracks of Control Joints (> 1/4″) – To prevent the epoxy from running out of the bottom of deep cracks or joints, insert a foam backer rod of suitable diameter (sold in big box stores), or partially fill with sand or caulk up to 3/4” to 1/2” below the surface. This will also serve as a bond breaker* to prevent the filler from adhering to the bottom of the joint. The depth of the remaining void should not exceed its width.

Leaky Tie Rods – Hammer chisel out the concrete at least ½” deep. Remove loose concrete and dust.

* Make sure that ElastiPoxy does not bond to the bottom of the control joint or crack. Using the backer rod and/or sand will prevent this from happing. Example; If the filler adheres to the bottom of the joint and the crack in the bottom is 1/8″ wide, a 1/8″ movement of the concrete would require a 100% elongation of the epoxy spanning the crack. This exceeds the limits of elastic epoxies and the joint filler would crack.

• Application Instructions

Mixing Procedure

Exact measurement is important and must be adhered to! ElastiPoxy has a short pot life – 30 to 45 minutes. Mix only as much product as you can easily apply within 30 minutes.

STEP 1 – Using the two drill mixing attachments provided, mix each container (A & B) with your slow-speed electric drill. Do not cross contaminate the mixers.

STEP 2 – Using the measuring cups, pour equal amounts of Compounds A and B into separate mixing cups.

STEP 3 – Mix both compounds together by pouring them into a clean mixing cup, plastic pail, or similar.

STEP 4 – Mix both compounds together for at least 2 minutes using one of the mixer attachments.

ADD SAND IF NEEDED – Add construction sand (or sand without fines) – at the appropriate ratio – to the mixture using a measuring cup. Mix thoroughly for 3-5 minutes. Using sand provides a stiffer mixture for vertical surfaces, more volume, and a rigid rather than flexible repair.

STEP 5 – After mixing, allow the mixed ElastiPoxy to off-gas for 15 minutes.

Application

STEP 6 – Tack-coat the joint, crack, or surface with pure epoxy (without sand) using a paint brush.

STEP 7 – Simply pour in the pure epoxy or apply the sand-epoxy mix as described below:

• EXPANSION CONTROL OR FLOOR-TO-WALL JOINTS, CRACKS IN FLOORS:
  The pure ElastiPoxy is self-leveling. Pour the epoxy into the joint with a plastic cup or small watering can until level.
• HOLES OR DIVOTS, SPALLS OR PITS IN CONCRETE SLABS:
  Use 2:1 or 3:1 sand to epoxy ratio. Apply with a trowel and smooth out. Tip – Broadcast sand over ElastiPoxy before it cures to add texture and prevent tracking. Lay strips of masonite or plywood over the area if immediate traffic use is required.
• WIRE TIES, CRACKS OR HOLES IN POURED CONCRETE OR BLOCK WALLS:
  Use a 5:1 or 6:1 sand-to-epoxy ratio and force the mix into the crack with a trowel, starting at the bottom. If the epoxy sags, mix in more sand.
• LEAKING OR DETERIORATED CONCRETE BLOCKS:
  Use 2:1 or 3:1 sand to epoxy ratio. Apply with a trowel, pushing hard to fill the pores.

Visual Guides for ElastiPoxy Application