Among the many other problems home owners face in the warmer months of the year is blistering of acrylic paint on Exterior wooden surfaces.
Although blistering is not uncommon its is becoming more frequent due to the change of colour choices home owners are making in modern times.
So with today's stylish trend for darker colours on the outside of our home, It can create some problems.
But first of all what is a paint blister? A Paint Film Blister can be defined as either a small amount of gas or fluid underneath the fresh paint.
So now we know what a blister is but what's the cause? There are usually 2 things that cause this problem however variables can come into play.
Generally blistering is caused by moisture that is naturally present with timber weatherboards.
On a hot day the sun draws the moisture out of the timber by precipitation however the moisture gets trapped between the new paint films, which in very hot weather will cause a pressure build up beneath the paint layer that's when we get a blister.
So we know that pressure behind a paint layer will cause a blister, but what the source of the problem? There are two other factors that may come into perspective with paint film blistering.
The first and most common is the Colour of Paint, usually occurs with dark colours that tend to absorb the heat rather than repel.
In the second case, it has often been found that within a short time of repainting, newly painted surfaces have developed large blisters which in turn have lifted the existing paint underneath the new back to the bare timber.
But Why? Before acrylic paints were invented only oil based systems existed.
Enamel based products dry to a hard surface which do not have the same flexibility of acrylic paints and over time begin to crack with movement and lose their ability to adhere to the surface it was once applied to.
So with a buildup of moisture or pressure the blister becomes visible but because of poor adhesion the pressure separates the old layer from the original surface.
So How Do We Fix It? The only solution to the problem is to remove all the old paint that has poor adhesion and prime the area/s allowing for additional coatings.
Water Blisters.
There is still one more variation for paint blistering and that involves rain or heavy due only hours after acrylic paints have been applied and they are call water blisters.
This is due to a surface being painted and before the membrane has fully cured to withstand water it either rains or heavy due becomes present in the environment.
Even though the paint may not have washed off in the rain.
Although blistering is not uncommon its is becoming more frequent due to the change of colour choices home owners are making in modern times.
So with today's stylish trend for darker colours on the outside of our home, It can create some problems.
But first of all what is a paint blister? A Paint Film Blister can be defined as either a small amount of gas or fluid underneath the fresh paint.
So now we know what a blister is but what's the cause? There are usually 2 things that cause this problem however variables can come into play.
Generally blistering is caused by moisture that is naturally present with timber weatherboards.
On a hot day the sun draws the moisture out of the timber by precipitation however the moisture gets trapped between the new paint films, which in very hot weather will cause a pressure build up beneath the paint layer that's when we get a blister.
So we know that pressure behind a paint layer will cause a blister, but what the source of the problem? There are two other factors that may come into perspective with paint film blistering.
The first and most common is the Colour of Paint, usually occurs with dark colours that tend to absorb the heat rather than repel.
In the second case, it has often been found that within a short time of repainting, newly painted surfaces have developed large blisters which in turn have lifted the existing paint underneath the new back to the bare timber.
But Why? Before acrylic paints were invented only oil based systems existed.
Enamel based products dry to a hard surface which do not have the same flexibility of acrylic paints and over time begin to crack with movement and lose their ability to adhere to the surface it was once applied to.
So with a buildup of moisture or pressure the blister becomes visible but because of poor adhesion the pressure separates the old layer from the original surface.
So How Do We Fix It? The only solution to the problem is to remove all the old paint that has poor adhesion and prime the area/s allowing for additional coatings.
Water Blisters.
There is still one more variation for paint blistering and that involves rain or heavy due only hours after acrylic paints have been applied and they are call water blisters.
This is due to a surface being painted and before the membrane has fully cured to withstand water it either rains or heavy due becomes present in the environment.
Even though the paint may not have washed off in the rain.