When it comes to painting, it's normal to wonder how many coats to apply . With or without an undercoat, two, three or even four coats of paint afterwards... Advice is flying around from all sides and it can sometimes be difficult to find your way around. Algo details the most important information you need to know so you can paint with complete peace of mind and achieve optimal results!
The undercoat: an essential
It's easy to want to do without the undercoat and underestimate its usefulness . However, this paint, also called a primer, is absolutely necessary for successful work. It is used in particular to standardize your surface by smoothing out irregularities and above all promotes the resistance and adhesion of your finishing paint , so it will hold up better during application but also over time. The undercoat prevents your wall, ceiling or other surface from literally absorbing your paint, which will allow you to avoid having to apply additional coats of paint to get a good result. Less paint to apply means fewer pots to buy and therefore money saved!
You've got it: if you're still wondering whether you can do without an undercoat, the answer is no . It's actually absolutely essential on the following surfaces: tiles, wood, already painted surfaces, plasterboard, plastic, glass, and even metal.
The only case where you can do without an undercoat is if your surface is perfectly smooth, uniform, non-porous and already well adhered.
There are different types of undercoat depending on the type of surface you want to paint (special wood, metal, bathroom, etc.) but also universal undercoats that adapt to most surfaces so you can use it in all rooms of your home and adapt to all your projects. The choice is yours!
How many layers of undercoat should you apply? One is enough . Make sure you follow the drying time indicated on the can of your undercoat (12 hours for Algo undercoat, for example) and you can then continue your work with complete confidence!
Finish: 2 coats for optimal results
Once your undercoat is completely dry, it's time to apply your topcoat. Satin, matte, or even satin—the choice is yours ! If you're still unsure, take a look at our previous article, which will help you differentiate between the three and choose the right finish based on the desired effect and the room you're painting.
The number of coats of paint to apply varies depending on the condition of your surface and the type of paint chosen (acrylic, glycerol, etc.). In general, 2 to 3 coats of finishing paint will be required to achieve a beautiful result and successful work.
To put all the chances on your side, we advise you to apply a first thin layer which will fill the hollows of your support and hide any stains present . Do not worry if you realize that with this first layer you have not perfectly covered your entire area or if you see traces of brush or roller , this is normal and the second layer that you will apply next is precisely to correct this! Respect the drying time indicated on your paint pot and start with a second layer. This will allow you to standardize your support, so be particularly concentrated during application to avoid leaving any traces of brush or roller.
After applying this second coat, you can choose to stop there and clean your tools before enjoying your new decoration. But if you are a perfectionist, you can also decide to apply a third coat to ensure the result is absolutely perfect. A third coat may be necessary if you are going from a light wall to a very dark shade or vice versa. The more coats you apply , the brighter the paint will be, this is particularly the case for white paint, for example.
And what about single-coat paints?
Many people regularly wonder if they can apply only one coat of paint. Applying a single coat of paint also seems very tempting and may give you the impression of saving time , but we do not recommend it because the final result will not be optimal. As such, be wary of paints sold as "single-coat": the term may seem attractive but in practice one coat will not be enough. In many cases you will be forced to apply at least a second coat because your wall will absorb a certain amount of paint while drying and the result will not be uniform enough. If you have chosen a dark-colored paint , it is even more advisable to apply a second coat.
How to paint without leaving paint marks?
There are several little tips to avoid paint marks on your walls or ceilings as much as possible:
- When applying, try not to press too hard on your roller or brush.
- To promote even distribution of your paint, paint using crisscrossing motions : alternate between vertical and horizontal strokes, starting at the top of your wall and moving forward in small areas.
- Be sure to allow your paint to dry before applying a new coat.
- No matter the size of the surface to be painted , paint it all at once. If you do it in several passes, you will be faced with demarcation lines which will mark your connections.
Last important tip: the quality of the tools ( brushes, rollers ) and the paint you use greatly influences the number of coats you will have to apply and the final result. So don't hesitate to invest a few extra euros in good quality equipment: you will see that you will save time and the result will be even more stunning.
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As you will have understood, the secret to successful work can be summed up in a few words: a prepared surface, 1 undercoat then 2 coats of paint and that's it!
