How Do You Prep a Surface for Flex Seal Liquid?
Proper surface prep is key to a strong, long-lasting seal when using Flex Seal Liquid. While the product itself does the heavy lifting, your prep work helps it adhere better and cure evenly.
Step-by-Step Surface Prep Guide
1. Clean and Dry the Surface
Remove dirt, dust, grease, oil, mildew, and any loose debris. For non-porous surfaces, use soap and water or a degreasing cleaner. For porous materials, scrub thoroughly and rinse well.
Let the surface dry completely before applying Flex Seal Liquid, as moisture during application can interfere with bonding and slow cure time.
2. Remove Flaking Paint or Rust
Use a wire brush, sandpaper, or scraper to remove any loose paint, rust, or corrosion. This helps the liquid form a solid bond with the base material. A vacuum can help remove any debris left behind.
3. Mask Off Edges (Optional)
Use painter's tape to mask off areas where you want a clean edge. This helps control the application and creates a neat finish.
Flexpert Tip: Always use Flex Seal Liquid in well-ventilated areas and wear protective gear such as gloves and eyewear.
Surfaces Flex Seal Liquid Works Well On
- Wood
- Concrete
- Metal
- Tile
- Fabric
- Plastic (some types)
- Rubber
- Glass
- Masonry
Flexpert Tip: If you’re unsure how Flex Seal Liquid will interact with a material—especially plastics or coated surfaces—test a small area first.
Great results start with great prep. Take a few extra minutes to get your surface ready, and Flex Seal Liquid will do the rest!
