TWO: CASTING

• The face coat can be sprayed with a GFRC sprayer using the Surecrete Xtreme Series Precast Mix.
• Supporting the form on saw horses and rotating it as you spray will make it easier to spray the larger surfaces.
• Spray the coats on thin and build them up as they begin to dry. If you spray too much on at once, it will slump.
• Any vibration can also cause the concrete to slump down, creating a runny surface.

Step 2 – Chip Brush

• After the first coat is completely sprayed, use a chip brush to gently force the concrete into the edges of the form.

Step 3 – Mix the Backer

• A fibrous backing blend will give the piece more strength than just the face mix or casting mix alone.
• Press the mix into the form by hand, one pad at a time. Spread the concrete out as you lay it up, or it will slump down.

Step 4 – Flatten the Top

• Continue packing the form until the walls are about 3/4″ thick.
• Trowel the top edge flat to minimize grinding later.
• Leave some of the concrete hanging over the edge to help keep the walls from slumping.
• Let the concrete cure for at least 24 hours, and then move on to the next step: Demolding.