The majority of Bluff Hollow Cement Works’ mold-produced pieces are coloured in three levels:

1 Integral: a coloured powder is added to the basic concrete mix
2 Acid staining: a concrete acid stain is applied for contrast
3 Sealer: a water-based sealer, with an acrylic colour added, is applied as a final coat.

Some of the smaller pieces are made with a high-polymer mix; as a result, they are heavier in relation to size than the lightweight pieces.