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When it comes to any project, including painting, preparation is always important. With the right tools and paint, painting exterior window trim will not be difficult. Plus, in terms of curb appeal, it will all be worth it in the end! And if you hire professional painters to accommodate you, life will be easy. A clean window trim will go a long way to improving the look of your home’s exterior. Let’s not forget that preparation is just as important as the end product! 

How To Paint Exterior Window Trim 

First, preparing the surface is vital to accept the new paint. Thus, you will have to scrape away any peeling paint. If there is any loose paint remaining, it would cause the new paint to peel off, and that is the last thing we would want to happen. It is important to note that this step is only essential for trimming any type of material that peeling paint happens. Now, you need to remove hardened caulking. With a putty knife, and only on older windows, you need to scrape off the semisolid sealant that fills between trim boards. This is because as time passes, they become brittle and pull away from the trim. Start with slanted blades to remove old caulking from the seam and then use the sharp point to dig out old caulking from the corners.
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Wipe, Sand, then Apply 

  • Wipe down trim: Once all the loose paint has been taken out, you will need to use a household degreasing cleaner for interior wood. On exterior wood, to protect from any potential mildew growth, you will need to pick a cleaner that contains mildewcide. If you are working with a metal trim, you should use a rust-removing cleanser.
  • Sand trim: Although there are various types of trim, if there has been paint applied, start with a 150-grit sandpaper to smooth the old layer of paint. Also, to reveal the bare surface. Once that is complete, use a 220-grit sandpaper to further smooth the surface.
  • Put in new caulking to exposed seams: For caulking to be effective, especially with painting exterior window trim, it needs to be smoothly applied into the crack. Using a caulk aid to smooth out the bead will make your life very easy. First, start on one end and with light pressure, pull the caulk tool to the opposite end. Then, if the caulk builds up under the tip, wipe it down with a clean cloth rag, until it gets to the end of the seam.

Now you can start painting your exterior window trim! 

For prior painted trim, start with a fresh coat of paint. For trim that is unfinished, you will need to use a coat of primer before painting. Using Hyde tools, you can begin painting exterior window trim. Once you have painted 11 inches of trim (approximately), life the paint shield and wipe the blade on a cloth rag, before moving onto the next section. If you have narrow strips of trim, you should purchase a small angled brush, so that you can be more successful in this difficult process. For a durable finish, apply one to two coats of paint. Wait the right amount of time before applying a new coat of paint. Make sure to read the drying times on the paint can for best results. Lastly, getting paint on the window panes is okay! Please do not panic, as this is part of the process.

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Removing paint from glass 

It is completely doable to remove paint from glass, in the most easiest and non-toxic way. This way, you will not damage the glass. You will need white vinegar and water. For tools, you will need a rag and a saucepan.

  • Boil in your saucepan, 3 tablespoons of white vinegar and 2 tablespoons of water.
  • With your rag, dip it into the hot vinegar and water. Please be careful not to burn yourself. Maybe wear oven mitts as added protection.
  • Lastly, rub the rag on the painted glass, in a slow manner. As the heat will loosen up the paint, scrub harder once the paint comes up.
  • It is completely possible that the paint can not come off right away, and that’s okay. In situations like that, use a razor blade to scrape off the paint once it is loosened by the hot vinegar mixture. The surface must remain wet and scrape diligently, so that you don’t scratch the glass.

Painting Exterior Window Trim Complete! 

Whether you did this yourself or with the help of one of Toronto’s painting companies, you have completed the process of painting exterior window trim! Exterior home painting is difficult because there is so much space to cover. Regardless, preparation will take you far in these home renovation projects. 

At Home Painters Toronto, our main goal is to satisfy you, the homeowner! We will help you pick the colours you want, show you the latest painting and home renovation trends, so that you feel satisfied by the outcome. We use multiple products that everyone loves, such as Benjamin Moore and Sherwin Williams! With over 30 years of experience and many happy clients to show for it, call us now at 416-494-9095. We would be happy to provide you with a FREE no-obligation quote and answer all your inquiries about painting exterior window trim! 

Brian Young - Home Painters Toronto

From The Owner & Founder


Hello and welcome!

I’m both deeply honoured and flattered you are considering using our services.

Since 1987 when I was at York University simply earning my way through school, I’ve had the privilege to meet and work with thousands of amazing homeowners like yourself.

Besides the birth of my daughter, there is nothing more satisfying than seeing a homeowner’s life change when we have transformed their dream home into a masterpiece. For that reason, our painters take their jobs very seriously and are committed to our cause.

At Home Painters our mission is to paint homeowners’ dreams, and make your painting experience last a lifetime!
I look forward to hopefully meeting you one day, as it brings me tremendous joy to make homeowner’s dreams come true.



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