The Biggest Mistake in Sealing – And How to Avoid It
When it comes to sealing concrete, pavers, or any other surface, the most common mistake is not preparing the surface the right way. Skipping important steps like checking for old sealers and making sure the surface is really clean can cause big problems, costing you extra time and money to fix.
Why Proper Surface Prep Matters
Sealing might seem simple, but the key to a long-lasting job is in the preparation. Without the right prep work, your sealer may not bond properly, leading to peeling, flaking, or a splotchy finish. Even worse, if you don’t test for an existing sealer, you could apply a new one that won’t stick—forcing you to strip it off and start over.
The best way to avoid this is by doing a water test. Pour a little water on the surface and see what happens. If it beads up, there’s likely an old sealer present. If it soaks in quickly, the surface is ready for sealing. This simple step can save you from a lot of headaches later on.
The Importance of Cleaning
Even if there is no old sealer, not cleaning the surface well enough can cause big problems. Mold, fungus, dirt, and other stuff left behind can grow under the new sealer, making it peel or not stick properly. To make sure your sealing job lasts, the surface must be completely clean.
Taking the time to test, clean, and prepare the surface properly will save you from expensive fixes, unhappy customers, and sealers that don’t work right. The best results come when you don’t rush and do the prep work correctly.
Frequently Asked Questions about Sealing
What happens if I apply a new sealer over an old one?
If the old sealer is not compatible with the new one, it may prevent proper adhesion. This can lead to peeling, bubbling, or an uneven finish. Always test for an existing sealer before applying a new coat.
How can I test if my concrete or pavers already have a sealer?
One of the easiest ways to check is with a water test. Pour a small amount of water on the surface. If it beads up, there is probably still a sealer present. If it soaks in quickly, the surface is bare and ready for sealing.
How do I remove an old sealer before applying a new one?
Many professionals find that using a high-quality stripper, like Deco Products’ Super Stripacast, makes the process much easier and more effective. Identifying there is existing sealer first will help you determine the best removal approach.
What happens if I seal a dirty surface?
Sealing over dirt, mold, or stains will trap those contaminants, leading to poor adhesion and possible growth beneath the sealer. This can cause discoloration, peeling, or even surface damage over time.
How long should I wait after cleaning before sealing a surface?
It depends on the surface and weather conditions. In general, you should wait at least 24-48 hours to ensure the surface is completely dry. Sealing a damp surface can lead to hazy or ineffective results.
What are the common causes of sealer failure?
Some of the most common causes include improper surface preparation, applying too much or too little product, sealing in bad weather, and using incompatible products. Taking the time to test, clean, and prepare properly will help avoid these issues.
Why is my sealer peeling or flaking after application?
This usually happens when the surface wasn’t properly cleaned or if there was an old sealer that wasn’t removed. New sealer needs to bond directly to the surface, so any leftover sealer or dirt can cause peeling and flaking.
Need Help? Call Deco Products
If you have questions about getting a surface ready, testing for old sealers, or picking the right product, Deco Products is here to help. With over 30 years of experience, we provide expert advice and high-quality, eco-friendly sealers. Contact us today to get the help you need for a successful sealing job!
By taking the time to properly prep, clean, and test your surface, you can avoid costly mistakes and ensure a strong, lasting finish. Don’t guess—prepare the right way from the start, and if you need guidance, Deco Products is just a call away!
