If you walk into any room that was painted without using surface preparation, you’ll see it in a year, maybe sooner. Paint bubbling away from the wall. Peeling of edges around trim. A finished surface that was perfect on day one and exposed all the imperfections to the surface by the time the season changed.
The paint did not fail. The preparation did.
This is the part of a painting job that nobody sees and most people don’t ask. It’s the one thing that decides if a paint job will last 5 years or 15, if it’ll appear professionally painted or merely covered over, and if the money invested in quality paint will be reflected in the outcome. At Evolved Contracting, surface preparation is not a step in the process that is hurried to get to the finish coat faster. It is considered as the work itself.
Here is what’s involved in proper preparation and why it’s more expensive to rush than to do it right the first time.
The Surface Has to Be Clean Before Anything Else Goes On
Paint does not stick to dirt, grease, and chalky residue of old paint. If those things are still in place, it sticks to the surface beneath them, so if they are not removed, the paint sticks just as much as the contamination it’s on top of.
This involves cleaning the interior surfaces, especially in bathrooms and kitchens, where cooking grease and humidity causes a film to form over time which is not visible until paint begins to peel off of it. Exterior surfaces in the South Okanagan require pressure washing to take off mildew, dust, chalking from old and worn paint, and any biological growth that becomes trapped in porous surfaces such as stucco or wood siding.
In the summer, it is hot and dry at Summerland and Penticton, leading to faster chalky oxidation of exterior surfaces caused by exposure to ultraviolet radiation than in moderate climates. The reason is that the chalk has to be removed entirely before any coating is applied to it, otherwise the paint will adhere properly for a while and will start to separate.
Repairs Come Before Primer, Not After
Before application of the primer, all cracks, holes, failed caulk joints, and any other surface defects must be corrected. This is where many quick painters opt to jump ahead and simply put the paint on the most noticeable blemishes.
The problem is, paint does not conceal imperfections. It highlights them. A crack in the drywall which is not filled correctly and then painted over can be seen as a shadow line in raking light. A nail pop that has been brushed past will appear as a bump underneath the finish coat. Caulking around window frames and trims that has failed over time and is not replaced but painted over still allows water and air to enter and over time, the new paint is pulled away from the outside of the frame.
In the exterior setting, this step also entails the inspection of all surfaces for wood rot, failed sealants around penetrations and areas where the substrate has deteriorated to the point where paint will not adhere properly, even with good application. Painting over a problem doesn’t fix the problem. It only fixes the problem in the short term and ends up costing more in the long run.
Sanding Creates the Profile That Paint Sticks To
Smooth surfaces do not hold paint as well as surfaces with a slight mechanical texture for the coating to grip. There are two uses for sanding: to remove high spots, loose paint and surface irregularities, and to achieve that texture.
Sanding will help to remove the sheen from glossy surfaces that would otherwise prevent adhesion for previously painted surfaces. A surface that is gloss or semi-gloss, and will not have to be scuffed before being painted but rather it will be painted over, is a surface that will be a surface that is working against the paint on the surface rather than bonding to the paint.
However, sanding between coats is particularly important when working on woodwork, trim and cabinet refinishing projects where a professional spray finish is expected compared to something that appears to be hand brushing and uneven. This prep work is key to the spray booth process that Evolved Contracting employs for cabinet refinishing in Summerland and Penticton to achieve the glass smooth surface that makes refinished cabinet indistinguishable from new ones.
Primer Is Not Optional
Primer is sometimes treated as an unnecessary extra step, particularly when the finish paint is labelled as paint-and-primer-in-one. In most situations on real surfaces with real history, that label is marketing rather than a meaningful substitute for a dedicated primer coat.
Primer does things that finish paint doesn’t. It seals porous surfaces so the finish coat doesn’t get absorbed unevenly, which is what causes blotchy, flat spots in a finish. It blocks stains from tannins in wood, water marks, and smoke damage from bleeding through the finish coat. It creates a chemically compatible base layer for the finish paint to bond to, which matters when you’re going from one type of coating to another.
In the case of exterior stucco, which is found throughout Summerland, Peachland and West Kelowna, it is the primer that closes the extremely porous surface of the stucco and provides a smooth base. If not, the finish coat is absorbed at varying rates leaving a patchy, uneven finish.
Why This Matters More on Certain Surfaces
While not every surface will need the same amount of preparation, some will need a lot more than people realize.
Exterior wood. Wood changes in size and shape due to changes in temperature and moisture. Wood undergoes a great amount of dimensional movement in the Okanagan every year due to warm, dry summers and cold winters. Without the correct preparation, the correct primer for the wood species and existing coating and the correct flexibility in the finish coat, a paint system applied to wood will crack and peel when the wood moves under the coat.
Previously painted surfaces with multiple coat buildup. Homes that have been repainted several times over the decades sometimes have paint buildup thick enough that the layers have started separating from each other. A new coat applied over unstable existing paint is only as stable as the weakest layer beneath it. Sometimes the right preparation means stripping back to bare substrate before any new coating goes on.
Cabinets and woodwork. The spray booth process is justified by the preparation that is necessary for a proper cabinet refinishing job. Thorough degreasing, sanding and priming yields adhesion and surface profile required for a sprayed finish to cure hard and remain chip-resistant. Proper preparation can take anywhere from two to three days. That’s not uncommon when you’re doing the job right.
What Skipping Prep Actually Costs
A painting contractor who fails to prepare the surface properly or takes shortcuts may offer a lower price and have a job done quickly. The reduced price and quick timeline comes with a cost, but it’s one that appears at a later time, not sooner.
Peeling paint that needs to be addressed two years after a job that should have lasted a decade. A cabinet refinish that starts chipping at the edges within six months because the surface wasn’t properly degreased before coating. An exterior repaint that develops adhesion failure behind window trim because the failed caulk was painted over instead of replaced.
Evolved Contracting has been doing this type of work for more than 20 years in Summerland, Penticton, Peachland and West Kelowna. Each surface that is completed is thoroughly cleaned, repaired, sanded and primed before finish coats are applied, as it’s what a truly lasting finish demands. It is not a slower approach. It’s the right one.
Ready to discuss your painting job? Before making any commitment, call Evolved Contracting at (604) 966-4449 or contact at evolvedcontracting@proton.me for a sincere quote.