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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exterior paint failures

Exterior Residential Paint Failures

What causes exterior residential paint failures?

The exterior of your home is exposed to sun, temperature changes, wind, and rain.  A good paint job should help protect the exterior of your home from the elements.  If the surface of your home is not properly prepared, a bad paint job can work with the elements to damage the exterior of your home.

 

Here are a few different types of exteriors and potential problems that can occur if the surface is not properly prepared:
  1. Wood – The exterior of your home may be constructed of either a natural wood, or a man-made wood product.  If your exterior wood surface is not properly prepared, it causes the wood to be exposed to moisture.  Moisture is one of the most popular causes of exterior paint failures.  Moisture can cause exterior paint to blister, crack, flake, and peel.  It can also cause mildew and exterior wood to warp.  Proper surface preparation helps to protect the exterior wood surface from the elements and helps the paint to properly adhere to the wood, giving your home a beautiful paint job!
  2. Masonry – An exterior masonry structure can be made of concrete, brick, or stucco.  All masonry must be clean and dry prior to painting.  As with many other substrates, water is a major cause of masonry paint failures.  When exposed to the elements, water can cause the paint to lift off the surface.  It is important to know the type of masonry surface, if the masonry surface has been properly aged prior to painting, and if any measures have been taken to protect the masonry surface from water.

If you have any questions about exterior residential painting, give HCG Contractor a call.  Our crew is always available to help!

https://hcgcontractor.com/our-services/exterior-home-painting/