
Painting a room is a great way to transform any space, but it requires attention to detail and patience. Before starting to paint a room, it is important to prepare the space by cleaning and sanding the surfaces, filling in any holes or cracks, and taping off any areas that you do not want to get paint on. The order in which you paint the room is also important; most professionals recommend painting the trim first, followed by the ceiling and then the walls. This way, you don't have to worry about getting paint on the walls or ceiling when taping off the trim. When painting the trim, use a high-quality brush and apply the paint in smooth, horizontal strokes.
| Characteristics | Values |
|---|---|
| Order of painting | Paint the trim first, then the ceiling, and then the walls. |
| Paint type | Waterborne alkyd paint, such as Advance® Interior, is recommended for trim. |
| Paint finish | High gloss is the best choice for trim. |
| Paint application | Use short, horizontal brush strokes, and smooth over with one long brush stroke. |
| Paint preparation | Use a paint can opener or a flat-head screwdriver to open the paint can. |
| Paint quantity | One gallon of paint covers about 400 square feet of wall or ceiling. |
| Surface preparation | Clean the surface with a damp sponge or rag, sand it, and fill in any holes or cracks with spackling compound. |
| Painter's tape | Apply tape to adjacent surfaces to protect them from paint. Use a putty knife to seal the tape and prevent paint seepage. |
| Primer | Use an acrylic primer like Fresh Start® High-Hiding All-Purpose Primer to create a uniform finish. |
| Brush type | Use a high-quality nylon/polyester brush to avoid brush marks and losing bristles. |
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What You'll Learn

Prepare the room and trim
Painting a room is an affordable way to update its look, but it requires attention to detail and patience. The first step to success is proper preparation.
Firstly, decide on the desired paint colour and finish. Lighting in the room will change the colour of the paint, so be sure to test your favourite shades at different times of the day. The finish will depend on the type of room. For example, bathrooms and kitchens benefit from a semi-gloss finish, whereas a satin finish is extremely versatile for bedrooms and living spaces. High gloss is the best choice for trim, cabinets, and doors.
Before starting any painting project, gather all the supplies you'll need, including paint, brushes, rollers, trays, painter's tape, and a putty knife. Wash the walls and trim with a damp rag to remove any dust or dirt.
Next, apply painter's tape to the walls and ceilings surrounding the trim, being careful not to stick the tape to the trim itself. Use one long piece of tape instead of multiple shorter pieces to prevent paint from bleeding through. Press the tape firmly along the edges with a putty knife to ensure adhesion and prevent paint seepage.
If your trim is new or already smooth, lightly sand it using 120-grit sandpaper until the shine disappears. If the trim is rough and worn, start with coarse 80-grit sandpaper, then move to less coarse sandpaper to smooth the surface. Sand the surface and use a damp sponge or rag to wipe away any dust. Fill in any holes, dents, and cracks with a lightweight spackling compound. Once dry, lightly sand the spackled areas and use a tack cloth to remove any remaining dust.
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Choose the right paint and tools
Painting a room is an affordable way to update its look, but it requires careful planning and attention to detail. Choosing the right paint and tools is essential for achieving the desired results and ensuring a smooth and efficient painting process. Here are some tips to help you select the appropriate paint and equipment for trimming and painting a room:
Choosing the Right Paint
The paint you select will depend on various factors, including the desired mood, lighting conditions, and colour palette of the room. Consider the purpose of the space when choosing a colour. For social areas like dining rooms, kitchens, and living spaces, warm colours like yellow and red can foster a lively atmosphere. For more private settings, such as bedrooms, bathrooms, and home offices, cooler colours like blues, greens, and neutrals can provide a calming ambiance.
Additionally, be mindful that lighting can significantly influence the appearance of a colour. Test your chosen paint colour by applying a swatch to your wall and observing it at different times of the day under various lighting conditions. This will help you understand how the colour might look in your space throughout the day and night.
Selecting the Necessary Tools
To achieve a professional-looking finish, investing in quality painting tools is essential. Here are some of the key tools you will need for trimming and painting a room:
- Painters tape: Use this to create precise lines and neat edges. Apply it to walls and ceilings surrounding the trim, ensuring the surface is smooth and free of dirt and grime.
- Putty knife: This tool helps apply putty to any indentations in the wall or ceiling, creating a smooth surface for painting. It is also useful for pressing down painters tape to ensure adhesion and preventing paint bleed.
- Spackling compound: Fill in any holes, dents, or cracks with a lightweight spackling compound. After it dries, lightly sand the area to smooth out the surface.
- Sandpaper: Use fine-grit sandpaper (120-grit) to smooth out spackled areas and eliminate brush strokes or paint drips. For rougher surfaces, start with coarser sandpaper (80-grit) and then move to less coarse options (100- or 120-grit).
- Paint tray: Pour a small amount of thoroughly mixed paint into a clean paint tray to avoid making a mess and for easy access during painting.
- Angled brush: An angled brush, about 2 1/2 inches, is ideal for trimming and cutting in. Look for quality brands like Wooster, Purdy, or Benjamin Moore.
- Roller: A standard 9-inch roller with a synthetic core and a 3/8-inch nap is a classic choice for painting larger areas. Ensure the roller is of good quality to avoid paint leakage.
- Drop cloths: Use drop cloths to cover furniture and protect floors from paint spills and splatters. Canvas drop cloths are long-lasting, while plastic ones are a less expensive, disposable option.
- Ladder: A multi-position ladder is useful for safely reaching high areas, such as ceilings and the tops of walls.
Remember to read the paint instructions and properly prepare the room before beginning your project. With the right paint and tools, you'll be well on your way to a beautifully painted space.
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Apply primer
Applying primer is an important step when painting a room, as it acts as a base coat and creates a seamless transition to your final paint colour. It is especially important if you are painting over a porous surface, a repaired surface, or moving from a darker to a lighter colour.
Before applying primer, ensure the room is well-ventilated and remove all furniture and hardware from the walls, such as shelves, outlet covers, and light switch covers. Next, prepare the walls by repairing any holes, dents, or imperfections with a lightweight spackling compound or caulk. Allow the compound to dry completely, then sand the walls with fine-grit sandpaper (120-220 grit) to smooth the surface. Use a damp sponge or towel to wipe away any dust.
When applying primer, start by cutting in the corners and edges with a brush, being careful not to use too much primer. Bring the primer out 2-3 inches, feathering the edges to avoid a thick build-up of primer. Then, use a roller to apply the primer to the rest of the wall, working from the top of the wall down. Reload the roller when necessary and always overlap areas of wet primer. Apply the primer in slow, careful strokes, ensuring the roller is saturated with primer. Do not press too hard on the roller, as this can result in an uneven finish.
If you are priming trim, be sure to cover any bare wood and spackled areas. Allow the primer to dry for 24 hours, and then check if a second coat is needed. If so, lightly sand the trim with fine-grit sandpaper to smooth out the surface before applying another coat of primer.
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Paint the trim
Painting trim requires precision and patience. It is recommended to paint the trim after painting the walls and ceiling. Before starting, ensure you have the right tools and supplies, including caulk, a sanding block, painter's tape, a sponge, high-quality paintbrushes, and premium paint products.
Begin by cleaning the trim with a damp sponge to remove any dirt and grime. If necessary, use the rough side of the sponge or sandpaper to ensure a smooth surface. Fill in any holes, dents, or cracks with a lightweight spackling compound and let it dry completely. Sand the spackled areas to smooth out the surface, and then use a tack cloth to remove any remaining dust. If the trim is new or already smooth, lightly sand it until the shine disappears.
Apply painter's tape to the walls and ceilings surrounding the trim, ensuring the tape does not stick to the trim itself. Use long pieces of tape instead of multiple shorter pieces to prevent paint bleeding. Press the tape's edges with a clean spackling or putty knife to ensure adhesion.
Apply a primer to the trim, covering any bare wood and spackled areas. Allow the primer to dry for at least 24 hours. If needed, apply a second coat of primer and lightly sand the trim to eliminate brush strokes or paint drips.
Now, you are ready to paint the trim. Dip your brush approximately a third of the way into the paint and remove the excess by tapping the brush on the side of the container. Apply the paint using short, horizontal brush strokes, covering a few feet of trim at a time. Smooth over the series of short brush strokes with one long brush stroke, without adding more paint to the brush. Repeat this process, depending on the width of the trim, to create the appearance of long, smooth strokes.
Work from the top down, starting with the crown molding, then window frames, door frames, and finally, the baseboards. Remove the painter's tape shortly after painting, before the paint dries completely, to prevent peeling.
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Clean up
Clean-up
Now that your painting project is complete, it's time to clean up! Here are the steps to effectively clean up your space and ensure your newly painted room looks its best:
- Start by removing the painter's tape from the walls and trim. It's important to do this while the paint is still slightly wet to prevent peeling and ensure clean lines. Use a knife to carefully cut along any spots where the tape is stuck and pull it off at a 45-degree angle.
- Scrape any remaining paint from your paint tray or roller back into the original paint can. Securely close the lid to prevent the paint from drying out.
- Clean your paintbrushes by running them under warm water and using a comb or nylon cleaning brush to remove any remaining paint from the bristles.
- If you have excess paint that you want to save for future touch-ups, properly store it in a sealed container. Follow the manufacturer's instructions for the recommended storage conditions and shelf life.
- Dispose of any paint-soaked materials, such as rags or paper towels, in a safe and environmentally friendly manner. Some communities have special disposal guidelines for hazardous waste, so be sure to check your local regulations.
- Finally, give the room a thorough cleaning. Dust or vacuum any debris or paint flakes that may have settled during the painting process. Wipe down the walls, trim, and other surfaces with a damp cloth to remove any residual dust or paint splatters.
By following these steps, you will effectively clean up your space and be able to enjoy your freshly painted room!
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Frequently asked questions
It is recommended to paint the trim first, then the ceiling, and finally the walls. This is because it is easier to tape off the trim than the walls, and any paint that gets on the ceiling or walls can be painted over.
First, clean the trim with a damp sponge to remove any dirt and grime. If the trim is rough and worn, sand it with coarse 80-grit sandpaper, then move to less coarse sandpaper (100-120 grit) to smooth the surface. Next, use a lightweight spackling compound to fill in any holes, dents, or cracks. Once dry, lightly sand the spackled areas with 120-grit sandpaper. Finally, use a tack cloth to remove any sanding dust from the trim.
You will need caulk, a sanding block, painter's tape, a sponge, a high-quality brush (nylon/polyester brushes are recommended), and paint. For the paint type, a waterborne alkyd paint is best, and for the primer, an acrylic primer will deliver a uniform finish.











































