Step-by-Step: DIY Coating Inspection Tips for Homeowners

Nov 05, 2025By Dima Zastavskii
Dima Zastavskii

Coating inspections are an essential part of maintaining your home's surfaces, whether it's the exterior walls, decks, or even floors. Performing a DIY coating inspection can save you money and help you catch potential issues before they become costly repairs. Here's a step-by-step guide to help you conduct a thorough inspection.

Gather Your Tools

Before starting your inspection, make sure you have the necessary tools. You'll need a flashlight, a moisture meter, a magnifying glass, and a notepad for taking notes. Having these tools on hand will make your inspection more effective and efficient.

inspection tools

Inspect the Surface

Look for Visible Damage

Begin by examining the coated surface for any visible signs of damage. This includes peeling, cracking, or blistering. These issues can indicate underlying problems that need addressing. Pay special attention to areas that are frequently exposed to moisture, as these are more prone to coating failures.

Check for Moisture

Use a moisture meter to check for any areas where moisture might be trapped under the coating. High moisture levels can lead to peeling and blistering, so it's crucial to identify and address these areas promptly. Make a note of any readings that are above normal.

moisture meter

Evaluate Coating Thickness

Coating thickness is an important factor in its durability. Using a dry film thickness gauge, measure the coating's thickness at various points. Compare these measurements with the manufacturer's specifications to ensure the coating is still within the recommended range. If it's too thin, it may need reapplication.

Look for Discoloration

Discoloration can be a sign of UV damage or chemical exposure. Examine the surface under different lighting conditions to spot any areas that appear faded or discolored. If discoloration is widespread, it may be time to consider recoating.

discolored wall

Test Adhesion

Perform an adhesion test to check how well the coating is sticking to the surface. Use a utility knife to make a small crosshatch pattern and apply tape over it. Pull the tape off quickly. If the coating comes off with the tape, adhesion is poor, and recoating may be necessary.

Document Your Findings

As you conduct your inspection, document any issues you discover. Take photos for reference and make detailed notes. This documentation will be valuable if you decide to consult with a professional or when you perform future inspections.

By following these steps, homeowners can effectively inspect their coatings, ensuring their home remains protected and visually appealing. Regular inspections can save you time and money, preventing minor issues from becoming major problems.