Liquid Sandstone Homepage Tips for applying Liquid Sandstone

Applying Liquid Sandstone

Preparation

Prepare as for Liquid Terracotta. Bleeding is not as big an issue with Liquid Sandstone as it is with Liquid Terracotta. However all care should be taken to avoid it as it is very difficult to correct. Ensure surrounding area is masked to prevent damage.

Application

Dark substrates. To improve coverage rate over dark substrates undercoat with Megatreat Textured Primer Coat or Megatreat Primer Basecoat Sealer.

Small Objects and Small Flat Surfaces

First key coat; Apply a THIN coat with a good quality brush or a small foam pad applicator, making sure that the coat is even. This coat can be smoothed before drying with a damp brush. This key coat will be quite transparent. Do not attempt to fill in with the first coat.

Second coat; Starting at the top and working downwards smoothing out as you go, this coat will, in most cases, fill in and fully key to the first coat. This coat can be smoothed if desired with a damp foam brush or pad. (before the coat is dry) If a high build profile is required more skim coats can be applied.

Sawn Sandstone Look

This is done using long sweeping strokes at a 45 degree angle when smoothing out the final coat.

Gained Effect

While the final coat of regular sandstone is still damp, apply strokes of Desert gold with a small brush in long parallel sweeps varying the gaps between sweeps. Then blend in with a damp foam applicator.

Large Flat Areas

Ensure surrounding area is masked to prevent over spray damage. Apply first coat with a hopper gun or a foam pad applicator. If using a hopper gun it should be set to operate between 20-30 psi. It should be used at a distance of approx. 450mm [knee height] from the surface. This coat should be thin and see through. Allow to dry (normally around 1/2 hour)

Second coat; This coat will fill in the first coat, if using a spray gun smooth off with a foam pad applicator to highlight the sandstone effect.

Finishing; Smooth off any rough edges with sand paper or electric sander. The whole area can be sanded to give the aged or weathered look. Wash all tools immediately with fresh water.

Important Points

  1. Liquid Sandstone is very fast drying in direct sun light so try to avoid applying in the direct hot sun or hot wind
  2. Always apply thin coats.  Never apply thick coats
  3. Allow 24 hours to dry before driving on the surface
  4. Do not add water to products.  This will weaken it.
  5. Slightly dampen foam applicator when applying sandstone
  6. Do not try and fill cracks and hollows with sandstone
  7. Short bristle brushes apply sandstone better
  8. When using Liquid Sandstone on bricks.  Bag rake joints with sand and cement prior to application.  This will give a more realistic look.
  9. Apply only to clean dry surfaces
  10. Use an electric sander to smooth the Liquid Sandstone for areas such as tables and pool surrounds
  11. Re-cut joints with an angle grinder
  12. Use Sikaflex or similar for expansion joints. [looks smart]
  13. Always use appropriate safety equipment. [eg hearing and eye protection]
  14. Liquid Sandstone becomes a shade darker after satin or gloss sealer coat is applied
  15. Suitable for all surfaces.  For glazed tiles and etched glass apply penetrol or lightly sand with sandpaper.
 
 
 
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