Adhesive Chain - This is Why Lots of Paint Peels
You've heard that old saying before, right?
A chain is only as strong as it's weakest link.
When you hear the words adhesive chain, that truism should pop into your mind.
Layers and Layers
What does this have to do with things around your home?
When you start to glue things to one another and have multiple layers, the weakest bond of one of the layers is where failure will almost always happen.
Guess what? You use products all the time that are basically glue, but you don't think of them as *glue*.
How many coats of paint does the exterior of your home have on it? My previous neighbor's house back in Cincinnati had no less than ten or fifteen.
The house was built before WW II in the late 1930's and in the fifteen years my neighbors owned it they painted it three times! How many times was it painted from the day it was built to the year 1990 when my neighbors moved in?
Paint is simply colored glue. Each layer of paint sticks to the one below it. The layers of paint create an adhesive chain.
Not all paint is made with the same quality of glue! Some paints are made with low-quality glue similar to the white glue kids use a school.
Other paints have great glue in them like urethane resin that's VERY STICKY.
What is a Great Urethane Paint?
Here's a fantastic urethane paint:
The same is true of layers of wallpaper. The adhesive used for each layer of paper only has so much strength.
The same is true of pre-mixed drywall compound you buy in buckets or boxes. It's just dust and a water-based glue. Really.
The same is true for layers of shingles. The nails used to hold each layer on the roof only have so much holding power.
The same is true for plaster. Each layer of plaster has a finite amount of holding power to bond to the layer below it.
The same is true for cement stucco. Each layer of cement has a fixed amount of bonding strength depending on many factors.
Get Maximum Strength
To achieve maximum adhesion you need to follow the instructions that come with the product.
The surface you're about to stick something to MUST be free of dirt, oil, grease, etc.
Sometimes it needs to be perfectly dry.
Sometimes the temperature has to be between a certain range.
Sometimes you need to work in the shade and provide slow drying time.
It's all on the product label or written instructions that come with the product.
For example, if you apply a fresh coat of paint to a dirty glossy surface, don't be surprised that it peels.
You can get fantastic results if you take the time and follow the instructions.
It's really that simple.