Polyurethane is a great way to protect the wood from the elements, but sometimes it can cause bubbles in the finish. Preventing polyurethane bubbles is easier than you might think! In this blog post, we will discuss seven ways to prevent polyurethane bubbles in wood.
How to apply polyurethane without bubbles?
1) Give the surface a quick sanding before applying polyurethane to remove dust and debris that can cause bubbles.
2) Apply a thin coat of water-based prepping sealant over any surfaces such as wood trim or window frames, metal fixtures, siding, etc. It will help prevent small particles from entering the finish during the polyurethane application.
3) Apply a thin coat of water-based prepping sealant over any rough surface or has texture, such as wood grain. It will help fill in the imperfections and create an even finish to apply the polyurethane without bubbles on top of it.
4) Apply the final coats of polyurethane with a foam roller. It will create an even finish that is not as prone to bubbles and drips from the paintbrush or roller.
5) Apply two coats of polyurethane, allowing each coat to dry overnight before applying another coat. The thinner application will also help prevent bubbles in your wood by giving it time to dry and curing properly.
6) Apply a thin coat of polyurethane, allow it to dry for at least an hour before applying another coat. It allows the first layer time to create a strong bond, preventing bubbles from forming when you apply more layers on top.
7) When rolling out your paint roller or paintbrush, do so with a long, even stroke. It will create an even coat on the surface and reduce bubbles from forming at the end of your brush or roller as you release it from contact with the polyurethane onto the wood.
By following these simple steps, you can successfully apply polyurethane without bubbles and make a decent finish for your projects.