Common Problems

DIY Blistering

Blistering

DIY Blocking

Blocking

DIY Burnishing

Burnishing

Sealant Failures

Sealant Failures

Cracking / Flaking

Cracking / Flaking

Foaming / Cratering

Foaming / Cratering

Lapping

Lapping

Mud Cracking

Mud Cracking

Fungal Contamination

Fungal Contamination

Roller Marks / “Stipple”

Mottling

Efflorescence / Mottling

Poor Hiding (Coverage)

Poor Hiding (Coverage)

Poor Print Resistance

Poor Print Resistance

Poor Scrub Resistance

Poor Scrub Resistance

Poor Sheen Uniformity

Poor Sheen Uniformity

Poor Stain Resistance

Poor Stain Resistance

Picture Framing

Picture Framing

Roller Spattering

Roller Spattering

Sagging

Sagging

Surfactant Leaching

Surfactant Leaching

Yellowing

Yellowing

Crocodiling

Crocodiling

Chalking

Chalking

Chalk Run-Down

Chalk Run-Down

Dirt Pickup

Dirt Pickup

Poor Flow / Levelling

Poor Flow / Levelling

Fading

Fading

Frosting

Frosting

Tannin Staining

Tannin Staining

Nailhead Rusting

Nailhead Rusting

Paint Incompatibility

Paint Incompatibility

Peeling

Peeling

Poor Alkali Resistance

Poor Alkali Resistance

Poor Galvanised Metal

Poor Galvanised Metal

Poor Gloss Retention

Poor Gloss
Retention

Algal Contamination

Fungal / Algal Contamination

Wax Bleed

Wax Bleed

Wrinkling

Wrinkling

DIY Paint Tips

DIY Tips

FAQ

FAQ

8 thoughts on “Common Problems

  1. 1) What is coverage rate for “Wall & All” applied on existing water based painted surface (External)
    2) Ditto (Internal)
    3) Ditto (Roof)
    4) How much your 20L cost.

    • Hi Harry, thanks for getting in touch.

      For previously painted walls (internal & external) use Plaster Primer as your basecoat. Allow 16 hrs to dry. Sand surfaces lightly and wipe with a clean cloth until dust free. Apply 2 coats of Wall & All or Velvaglo with 16hrs interval between coats. Do not use Wall & All on roofs. Average is about 8 square metres per 1lt of paint. You can also use our Paint Calculator to work out how much paint you need for any surface.

    • Hi Christie, thank you for your query. The process is very nice and simple and is as follows:

      Ensure that the surface is clean, sound and dry; sand lightly to create a key, dust off, then finish with two coats of Velvaglo! Please note that technical data sheets for all Plascon products are available, which include application instructions.

  2. I have noticed that the good quality paint I have used for exterior is peeling off in large batches at a time. And underneath seems to be powdery. I tried scraping, then sanding and wiped the wall with a damp cloth.. Allowed to dry then applied Bonding Liquid. Then when that dried I applied Micatex. To my dismay the same thing is happening again. The paint just peels of in thick layers… please help???

    • Hi Steve, thanks for getting in touch. The issue you are experiencing is “chalking”, which can result either from using a low-grade, highly pigmented paint, or a paint intended for interior use has been used outdoors. Here’s what you need to do:

      1. First, remove as much of the chalk residue as possible by scrubbing with a stiff bristle brush (or wire brush on masonry).

      2. Wash walls with a Polycell Sugar Soap solution and rinse thoroughly with clean water (use power washing equipment if possible).

      3. Check for any remaining chalk by running a hand over the surface after it dries. If noticeable chalk is still present, repeat cleaning until totally clean. It’s important that the surface is clean, sound and dry.

      4. Apply a quality solvent-based or acrylic water-based primer (or comparable sealer for masonry), then repaint with a quality exterior coating. If little or no chalk remains and the old paint is sound, no priming is necessary.

  3. Hi, I need to paint a rhinoset plastered interior wall. And thereafter apply a top of the range white paint from Plascon. What type of undercoat do I need to use for such type of plastered wall? If I use a top of the range paint, do I still have to apply 2 coats?

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