Exterior Peeling Exterior Paint Solution

Peeling: Spontaneous loss of ribbons or sheets of paint due to loss of adhesion. When the surface is coated with a primer and topcoat, or with several coats of paint, the peeling may involve all the coats, some of them, or just the topcoat.

Possible Causes:

Swelling of wood due to seepage or penetration of rain, humidity and other forms of moisture into the home through uncaulked joints, deteriorated caulk, leaking roof or other areas.

Excess humidity or other moisture escaping from within the home through the exterior walls (less likely with latex paints, which allow water vapor to escape without affecting the paint film).
Inadequate surface preparation.

Use of a lower quality paint that has inadequate adhesion and flexibility characteristics.
Applying latex paint under conditions that hinder good film formation, e.g., on a very hot or cold day; in windy weather.

Applying an oil-based paint over a damp or wet surface.
Earlier blistering of paint see Blistering.

Solution:

If exterior moisture is the cause, eliminate the source by doing necessary repairs and maintenance: replace caulking; repair roof; clean gutters and downspouts; cut heavy vegetation away from the building. If moist air is originating from inside, consider installing vents (especially in rooms that tend to get humid such as the kitchen, bathroom and laundry room); attic louvers, exhaust fans and dehumidifiers may also help. Remove all loose paint with a scraper or wire brush, sand rough surfaces and prime any bare wood. Repaint with a top quality acrylic latex paint — it will provide excellent adhesion and allow water vapor to escape without harming the coating.


Exterior Painting – Frequently asked questions

Can I paint over aluminum/vinyl siding?
Yes. Always make sure the surface is cleaned to remove any chalk or dirt. Never apply paint that is darker than the original painted surface on vinyl siding.

Do I need to wash my house before I paint?
Yes. Surfaces must be clean before painting. Thoroughly wash with a house cleaner and water solution, making sure to remove any and all mildew. Rinse and allow to dry.

How much paint do I need?
Be sure to utilize our Paint Gallon Calculator in the Project Planner section to help you determine how many cans to buy for your next project.

To achieve one-coat coverage, paint should be applied at a maximum of 400 square feet per gallon. Rough or textured surfaces may require more paint. On these areas allow for 25-30 square feet per gallon. Some bright colors may require multiple costs to achieve sufficient hide.

How do I apply the paint?
When using more than one gallon of the same product, mix the gallons together to insure color and sheen uniformity. Two coats of this paint will provide maximum protection.

How do I paint shingles & shakes?
Shingles offer natural breaking points, paint in a vertical direction.

How do I care for freshly painted surfaces?
We suggest not washing your newly painted surface for at least 30 days. After that time, dirt and stains may be removed using a mild, non-abrasive cleanser and water.

I have never painted the exterior of my home before….?
When painting the exterior of your home always start with a clean surface; paint one side of the house at a time, starting with the highest point; apply a full even coat to one side of the house at a time and always paint the trim last.

What conditions are best for painting my house?
Generally you should only paint when the surface is between 50F and 85F. High temperatures cause the water in the paint to evaporate too quickly, while low temperatures prevent latex from covering properly. Always avoid painting in direct sunlight, strong winds, or when rain is expected within 8 hours.

What tools do I need?
Depending on your project and the type of structure you are painting, paints may be applied with a nylon/polyester brush, a paint pad or spray unit.

What is the proper way to use spray equipment?
It is always safe to operate spray equipment with safety cautions. Use respiratory and eye protection. All spray units are different and it is important to follow the manufacturer’s instructions carefully.