paint problems - chalking

Paint Problems – Chalking

What is chalking?

Chalking is when a fine, white powder begins to form on the exterior paint surface.   This is often caused by weathering and may seem as if the exterior paint color is fading.  Some chalk is normal, but heavy chalk may be a sign of problems.

What can cause Paint to chalk?
  • oil-based paint will usually chalk more than latex paint
  • using a low quality paint that is heavily pigmented
  • siding that has been coated in a factory
  • using an interior paint on an exterior surface
  • improper preparation of a porous surface
  • applying a thin, watery coating
  • not applying enough paint to adequately coat the surface
How do you repair chalking paint?
  • pressure wash and clean the surface
  • allow to thoroughly dry
  • clean and brick area of chalk

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paint problems - cracking

Paint Problems – Cracking

What is cracking?

Cracking is when hairline cracks begin to form due to a split in the dry paint film of at least in coat of paint.  As the cracks become worse, the paint will begin to flake.

What can cause Paint to crack?
  • applying a low adhesion paint
  • applying a less flexible paint
  • applying paint that is too thin
  • improper surface preparation
  • the age of the paint
  • painting over a glossy surface
How do you repair cracking paint?
  • remove any loose and flaking paint
  • sand the area
  • prime any areas before painting
  • allow to thoroughly dry

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Paint Problems - Blistering

Paint Problems – Blistering

What is blistering?

This is the name for bubbles that are caused when the paint looses adhesion and begins to lift from the substrate.

What can cause blistering in paint?
  • applying paint in direct sunlight
  • applying paint to a hot surface
  • moisture from an interior source that migrates to the exterior and causes the paint to rise from the surface
  • applying an oil-based paint to a damp or wet surface
  • applying an alkyd paint to a damp or wet surface
  • damp basements
  • lack of surface preparation before applying a latex paint
  • improper ventilation in kitchens and bathrooms
  • exposing freshly applied latex paint to dew, high humidity, moisture, or rain
  • exterior wall leaks
How do you repair paint that is blistering?

Unfortunately, the only way to repair paint that is blistering is to remove the old paint.  After the paint is removed, the source of the moisture will need to be found and repaired.  Proper ventilation may need to be installed to prevent future moisture problems.  The substrate under the paint will need to be cleaned and allowed to dry before any new primer or finish paint can be applied.

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Paint Problems - Alligatoring

Paint Problems – Alligatoring

What is alligatoring?

Alligatoring is an exterior paint problem that occurs when the paint begins to crack in a pattern that resembles the scales of an alligator.  The cracks are usually in the surface of the paint and do not expose the substrate below the paint.

What can cause this condition in paint?
  • some oil-based paints will crack and alligator due to age
  • some oil-based paints will crack and alligator with a fluctuation in temperatures
  • applying an oil enamel over a flexible coating
  • applying a topcoat before the primer or basecoat is dry
  • applying a coating over a glossy finish
How do you repair paint that is alligatoring?

Unfortunately, the only way to repair paint in this condition is to remove the old paint.  After the paint is removed, the substrate under the paint will need to be cleaned and allowed to dry before any new primer or finish paint can be applied.

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