The MDF moulding is more and more popular now, because it has stable performance and competitive price. Normally the products that are usually sold are unfinished, with a white-primed surface. Because many people would like to paint the moulding with their preferred colors. Then there is a question, if it is necessary to sand the white primed moulding before the painting. There we will provide a brief explanation regarding this issue.
Our White Primed Production Process
First Sanding
Before the application of the white primer, we will sand the surface of the MDF moulding products firstly. This will ensure superior surface smoothness and flatness, while also enhancing the adhesion of the coating.
Apply gesso
We apply two layers of Gesso on the moulding surface before the primer. After each coat of Gesso, we lightly sand the surface. This process ensures a smooth and even surface and maintains a uniform Gesso thickness, while also improving adhesion.
Apply water-based primer
Finally, we apply a water-based primer. Our primer formulation has been improved, making it resistant to peeling and cracking. The coating thickness is only 0.18–0.2 mm, and it is very uniform.
Why need White Primed surface finish
Enhanced Adhesion
Mouldings with a white primed finish feature a smoother and more even surface, free from raised fibers. This improved surface quality allows the paint to adhere more effectively, resulting in a better and more durable finish.
Sealed MDF Surface
The white primed finish helps seal the moulding surface, providing a certain level of moisture resistance to reduce the risk of swelling and deformation. It also offers additional protection to the moulding edges , enhancing overall durability.
Reduced Installation Cost
The white primed finish allows the moulding to be installed or painted directly, no need for additional surface preparation. This helps save labor, reduce installation costs, and significantly shorten installation time.
Offering uniform color surface
The surface color of the white primed mouldings is uniform, it can solve the color difference problems caused by natural raw materials. It can offer a same look and make the overall decorative effect perfect .
Why do some white primed mouldings need to be sanded before painting
Not smooth surface
If the the MDF raw material quality is poor and the sanding is not smooth enough, then after applying primer, the wood fibers or fine fibers on the MDF surface may be raised due to moisture absorption, resulting in a rough surface.
Not even coating
If the thickness of the white primed coating is uneven, you can sand the moulding surface to improve the surface finish and make the moulding appearance more look more perfect.
Improve adhesion
Sanding the white primed surface can increase surface roughness, enhance paint adhesion, and reduce the risk of peeling and cracking. So the moulding can keep good performance for longer time.
Why our whtie primed moulding do not need to be sanded before painting
Our white primed mouldings are ready to be painted and do not require any additional treatment before painting.
High quality raw material
Our MDF board is made from the good quality wood fiber, the fiber is long, soft and strong, so the fibers can be pressed very flat and firmly, making the board stronger and less likely to break.
Professional sanding
Our products are sanded using automated machinery. After multiple tests, we have precisely calibrated the sanding speed and thickness, ensuring a smooth surface and consistent coating thickness on the moulding
Upgraded Coating Materials
The formulation of our white primed coating has been refined. Once applied to the moulding surface, it provides excellent adhesion and a durable finish. You only need to be wiped clean with a cloth before painting, with no additional preparation required.
The advantages of our white primed moulding products
Customized product specification
We can offer the customized products, the moulding size, raw material and style can be customized according to your requirement,so you can contact us right now, if you have the requirement
Guaranteed product quality
Our product quality can be guaranteed, if there is product quality problem during you sale or use our products, we will offer you a satisfied reply. So we build the long-term cooperation with our clients.
Uniform product specification
Our white primed moulding products are with uniform size and color, the size is total same as the required product size. The product surface color is same white color, no color difference.
Summary
Whether sanding is required before painting white primed mouldings depends on the quality of the product. High-quality mouldings can be painted directly without any additional surface preparation. However, if the surface finish is not well treated, light sanding may be needed before painting.
You are always welcome to contact us — we guarantee that our white primed mouldings are ready for direct painting, with no extra treatment required.
