Wednesday, February 22nd, 2017 by Rhino Shield
Painting expert Herman Rabe tells us why paint fails: There are two main factors contributing to early paint failure and we only have control over one of these. The first is the weather and the second is application related. That seems simple enough to understand. Paint fails because of how we install it, and the weather conditions that the paint must endure. So if we do everything correct, how long can we expect paint to last. Most paint experts agree that 5-10 years is the maximum potential of quality exterior paint. The longer end of that range is for less harsh conditions with an ideal application including primer and two coats, and the shorter for wet climates with temperature extremes. But what is the ideal installation and how much will that cost us?
Experts agree that the longevity of paint comes down to preparation. The first step is to remove all loose paint and clean the surface. This is done by a combination of scraping and power washing, ideally with a cleaning solution and mildew inhibitor. The next step is to install a primer. Paint is NOT waterproof and it requires a primer that seals and protects the wood.Most painters do not use primer because it takes longer to install and many customers do not want the additional cost. Failure to use primer is the most common reason why paint fails.
The average cost of a one coat exterior paint application is $2.25 per square foot according to HomeWyse. Adding a primer coat to the project raises the cost to $3.00. Add a second coat to attain the maximum longevity of the paint (10 years) and the cost will be around $4.00 per square foot from a professional painter.
The main reason is weather, namely light, temperature and moisture. Rabe reminds us, Moisture is a major problem, especially on exterior walls, as paint is porous and moisture can penetrate it. Latex paint is weakened by exposure to moisture which penetrates the surface film and deteriorates the adhesion to the surface below. While proper primers and multiple coats can help, the limitations of latex paint itself makes these problems impossible to eliminate.
Temperature extremes is another reason why paint fails. As temperature fluctuates between hot and cold, the painted surfaces expand and contract. This stresses the paint causing cracks and pulls it away from the painted surface. If you live in a climate without these fluctuations in temperature your paint may last longer, but consistent warm temperatures mean more exposure to sunlight and damaging ultraviolet light.
Ultraviolet light breaks down the structure of the paint and fades the color. Much like it harms your skin, ultraviolet light is destructive to paint. For this reason, most paint has lost its fresh look after just a few years and is completely faded out in 5 to 7.
The final reason why paint fails is through abrasion of the surface by the particulate carrier by the wind. All exterior paint uses clay, chalk, or talc as the solid element that gives it thickness. These additives are used because they are inexpensive, but they wear very easily. Even where paint doesn't break down or lose adhesion, the effect of the wind wears it away. At a dried thickness of 1-2 mils, there is not much paint to wear away before what is painted is no longer protected.
Rhino Shield is designed to combat the reasons why paint fails.
Our exterior paint is an elastomeric resin which is truly waterproof and is not weakened by moisture. This stops moisture at the surface where it doesn't harm the material being painted, and ensures the longevity of the coating.
Temperature extremes do not effect Rhino Shield which remains flexible across the large temperature range. This ensures that expansion and contraction of the surfaces do not harm the coating.
Rhino Shield uses a ceramic solid. It does not break down like the clay, chalk and talc used in most paint. As a result, Rhino Shield wears like ceramic and at 8-10 mils offers a much thicker layer of protection. Ceramic is also reflective of ultraviolet light meaning less fading over time.
Regular paint has a limited lifespan even under the best conditions. It is severely limited by its composition and has not been improved in years. Rhino Shield is the exterior paint that was designed from the ground up to solve the problems of regular paint.
The cost of painting adds up over time, but Rhino Shield is a one time expense. That is because it is a permanent house paint guaranteed for 25 years. Since you are only painting one time you don't have to pay for paint over and over again. Therefore, by investing a little more upfront, around the cost of 2 to 2.5 paint jobs, you get an exterior coating that last as long as 5 regular paint jobs. The savings are excellent. As an added bonus Rhino Shield also insulates. This saves your money on heating and cooling and makes your home more comfortable.
Call Rhino Shield today for a free assessment and price. You will be glad you did