Portland House Painter
As a Professional Portland House Painter I often get asked,
House Painter Portland
“When is it necessary to completely remove failing paint, verses just spot prepping?”
Before I answer that question lets discuss what, poor inter-coat adhesion is.
Over the years surfaces will receive many layers of paint. Because people often don’t take the time to properly clean and prepare before they apply each coat, one of those lower layers of paint might not be able to support the weight and pull that is created by another coat of paint causing the entire coating to peel with very little effort.
I recommend before you paint any surface that you do an adhesion test.
There are two reasons to perform an adhesion test. One is to identify poor intercoat adhesion another is to confirm that the coating system your about to apply is going to stick before you complete the whole job.
The adhesion test method I prefer is to make small cuts in the coating with a razor knife being careful to not cut down into the wood. Then place 3M 2020 white tape over the cuts, rub a few times to make sure the tape is firmly adhered, and then remove. If the tape removes more than 10 – 15% of the coating I would advise you too completely to strip the coating and start over.
In this example I tested a well-known primer from Portland house painter department of Home Depot and a Quality water based enamel. This is the paint system that was recommended when painting over lacquer which is most commonly found on cabinetry.
Now as you can see more than 15% of the coating came off so I would definitely avoid this primer in this situation.
In my next video I will show you step by step how we strip paint, what products and tools we use, what primer we recommend and finish coats. The next video is titled “Stripping paint from a front door”
Brian Kemnitz has been a Portland House Painter for over ten years in the Portland Metro Area. He is the owner of a Portland Painting Company call Pearl Painters. If you are in the Portland Oregon Metro Area and would like to take classes please contact Brian at his Studio.
Portland House Painter
House Painter Portland
“When is it necessary to completely remove failing paint, verses just spot prepping?”
Before I answer that question lets discuss what, poor inter-coat adhesion is.
Over the years surfaces will receive many layers of paint. Because people often don’t take the time to properly clean and prepare before they apply each coat, one of those lower layers of paint might not be able to support the weight and pull that is created by another coat of paint causing the entire coating to peel with very little effort.
I recommend before you paint any surface that you do an adhesion test.
There are two reasons to perform an adhesion test. One is to identify poor intercoat adhesion another is to confirm that the coating system your about to apply is going to stick before you complete the whole job.
The adhesion test method I prefer is to make small cuts in the coating with a razor knife being careful to not cut down into the wood. Then place 3M 2020 white tape over the cuts, rub a few times to make sure the tape is firmly adhered, and then remove. If the tape removes more than 10 – 15% of the coating I would advise you too completely to strip the coating and start over.
In this example I tested a well-known primer from Portland house painter department of Home Depot and a Quality water based enamel. This is the paint system that was recommended when painting over lacquer which is most commonly found on cabinetry.
Now as you can see more than 15% of the coating came off so I would definitely avoid this primer in this situation.
In my next video I will show you step by step how we strip paint, what products and tools we use, what primer we recommend and finish coats. The next video is titled “Stripping paint from a front door”
Brian Kemnitz has been a Portland House Painter for over ten years in the Portland Metro Area. He is the owner of a Portland Painting Company call Pearl Painters. If you are in the Portland Oregon Metro Area and would like to take classes please contact Brian at his Studio.
Portland House Painter
