When it comes to painting, many homeowners and DIY enthusiasts often wonder if using an undercoat is truly necessary. Some believe it’s an unnecessary step that adds time and cost to a project. However, the reality is that an undercoat is crucial for achieving a professional, long-lasting finish. In this blog, we will address common misconceptions about undercoating and highlight the numerous benefits it provides for any paint job.
So what are some common misconceptions when it comes to using an undercoat?
#1 Undercoat is just paint without colour
This is a common misconception. Paint and undercoat are two completely different formulas. Paint is designed to deliver colour, while an undercoat’s purpose is to adhere to the surface, create a clean and smooth foundation, protect the surface, and sometimes block stains or hide other imperfections.
#2 Undercoat doesn’t make a difference and it takes too much time
Applying an undercoat will save you time and money in the long run. Depending on the condition and problem areas on your surface, using an undercoat can prevent the need to repaint or add extra coats of paint to get the desired results.
#3 Undercoat is not needed with high-quality paints
Even the best quality paints benefit from an undercoat. High-quality paints can provide better coverage, but they still need a solid base to adhere to. Skipping the undercoat can lead to uneven colour, reduced durability, and a higher likelihood of peeling and chipping.
#4 You only need to use an undercoat indoors, not outdoors
Using an undercoat outside is just as important. Exterior surfaces are exposed to the elements and can experience expansion and contraction (from heat and cold) as well as UV exposure. An undercoat helps your paint application adhere better and last longer.
What are the benefits of using an undercoat?
1. Improved adhesion
An undercoat enhances the adhesion of the topcoat, reducing the risk of peeling and flaking, especially on glossy or non-porous surfaces.
2. Smooth and even finish
An undercoat levels out surface imperfections like minor cracks, holes, and texture differences, resulting in a smoother and more professional-looking finish.
3. Better coverage
An undercoat improves the coverage of the topcoat, reducing the number of coats needed. This is particularly helpful when transitioning between dark and light colours.
4. Enhanced durability
An undercoat seals porous materials, preventing moisture damage and increasing the lifespan of your paint job. This is crucial in areas prone to high humidity or frequent water exposure.
5. Stain blocking
Undercoats block stains from bleeding through the topcoat, which is essential when painting over surfaces with water stains, smoke damage, or tannin-rich wood like cedar and redwood.
So, do you need to use an undercoat?
In summary, yes. Undercoats seal a surface and prepare it for the topcoat, preventing surfaces from soaking up too much paint, blocking stains, and ensuring adhesion to prevent peeling. Without undercoats, projects would take twice as long and last half as long. It’s important to get it right. If you’re painting an existing surface that has been painted before, an undercoat can mean the difference between a paint job you’re proud of and one that will need redoing soon.
Turn to your local paint store, turn to The Paint Store
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Our experienced professionals eagerly await to help, sharing tips and tricks to elevate your space. We don’t just sell paint; we share a passion for colour and building lasting relationships with you, our clients.
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