For commercial property owners in Alexandria, MN, a flat roof is a valuable investment that offers functional space and a modern look. But even the best flat roofs need proper protection against harsh weather, UV exposure, and water damage. One of the most effective solutions is applying a high-quality flat roof coating.
When applied correctly, roof coatings extend the lifespan of your roof, improve energy efficiency, and help avoid costly repairs. However, common mistakes during the coating process can compromise performance and lead to expensive problems down the road. To ensure you get the most out of your investment, here’s a look at the key flat roof coating mistakes to avoid. Contact Mid-West Roofing Systems for expert help in Alexandria, MN at (701) 500-9399.
Flat Roof Coating Mistakes to Avoid
Skipping a Thorough Roof Inspection
One of the biggest mistakes is applying a coating without conducting a comprehensive roof inspection first. Coatings are designed to protect and extend the life of a roof, not fix major structural problems.
If your flat roof has leaks, damaged membranes, or areas of standing water, these issues must be addressed before coating begins. Coating over existing damage will only trap moisture, accelerate deterioration, and eventually lead to coating failure.
Pro tip: Have a qualified roofing professional assess the condition of your roof to identify necessary repairs before starting the coating process.
Ignoring Proper Cleaning and Surface Preparation
Even if a roof looks clean, dirt, dust, and grease can prevent the coating from bonding properly. This is a surprisingly common oversight in commercial roofing projects.
Flat roofs accumulate debris from wind, storms, and foot traffic, which can interfere with adhesion. Pressure washing or specialized cleaning solutions are typically needed to create a clean, dry surface.
Why it matters: A poorly prepared surface can cause the coating to peel, bubble, or crack long before its expected lifespan.
Choosing the Wrong Type of Coating
Not all flat roof coatings are created equal. Silicone, acrylic, and polyurethane coatings each have unique advantages and limitations. Using the wrong product for your roof’s material, slope, and environmental conditions can lead to poor performance.
For example:
- Silicone coatings excel at resisting ponding water.
- Acrylic coatings work best in climates with less standing water.
- Polyurethane coatings are highly impact-resistant.
In Alexandria, MN, where seasonal temperature swings and snow accumulation are common, selecting the right coating type is critical. Always match the coating to your roof’s needs and local weather patterns.
Applying Too Thin or Too Thick a Layer
Thickness matters when it comes to roof coatings. Applying a layer that’s too thin may not provide adequate protection, while too thick a layer can cause cracking and uneven curing.
Most manufacturers specify a recommended mil thickness (thousandths of an inch) for optimal performance. Skipping this step or failing to use proper application equipment can shorten the life of your coating.
Overlooking Weather Conditions During Application
Roof coatings need specific weather conditions to cure properly. Applying coating in extreme temperatures, high humidity, or just before rain can cause adhesion problems and reduce effectiveness.
In a place like Alexandria, MN, timing is everything. Coating during a dry, mild weather window ensures that the product sets correctly and delivers maximum protection.
Neglecting Regular Maintenance After Coating
A flat roof coating isn’t a one-and-done solution. While coatings significantly reduce maintenance needs, they still require periodic inspections to ensure performance. Ignoring routine maintenance can allow small issues, like punctures or seam separation, to become costly problems.
A simple annual inspection and occasional cleaning can extend your coating’s lifespan by years.
Avoiding These Mistakes Matters
Every mistake on this list can lead to:
- Shortened coating lifespan
- Increased risk of leaks
- Higher energy costs
- Costly premature recoating or roof replacement
Commercial property owners in Alexandria, MN face unique challenges with their flat roofs, from heavy snowfall to intense summer sun. By avoiding these pitfalls and working with experienced professionals, you can ensure your flat roof coating investment delivers maximum value.
Flat Roof Coating Experts
Flat roof coatings are a smart, cost-effective way to protect and extend the life of your commercial roof, but only when applied correctly. Avoiding the common mistakes outlined above will save you money, reduce downtime, and protect your property for years to come.
If you want the job done right the first time, trust the expertise of Mid-West Roofing Systems providing quality flat roof coating solutions in Alexandria, MN. Call (701) 500-9399 today to schedule your flat roof assessment and take the first step toward long-lasting roof protection.
FAQ
Can a flat roof coating stop leaks?
Coatings can seal minor leaks, but they are not a substitute for structural repairs. Significant damage should be fixed before coating.
How do I know which coating type is right for my roof?
A roofing professional can recommend the best coating based on your roof material, slope, and the climate in Alexandria, MN.
Is a roof coating worth the investment for commercial buildings?
Yes. Roof coatings can reduce energy bills, prevent costly repairs, and extend roof lifespan, saving money over time.
Can I coat my flat roof myself?
While possible, it’s not recommended. Professional application ensures proper surface prep, correct coating thickness, and long-term durability.