How to paint UPVC Windows and save THOUSANDS on replacements

Can you paint UPVC Windows?

Yes, you can! Transforming UPVC surfaces is one of the easiest and most cost-effective ways to give your home a refresh, whether you’re looking to update your windows, doors, or other exterior features. UPVC is known for its durability, but its finish can sometimes feel dated or not in line with your desired aesthetic. Enter UPVC paint, a game-changer for those wanting to modernise their spaces without breaking the bank.

So, if you’re ready to transform your UPVC and get that sleek, modern look, here’s my step-by-step guide on painting UPVC to achieve a professional finish. It’s super easy to do, even if you’re new to DIY!

So Why Use UPVC Paint?

I used Rust-Oleum's UPVC paint as it is specially formulated to adhere to UPVC surfaces and there is no primer needed, which is an added bonus! If you’re not using Rust-Oleum paint then I recommend priming the surface with ZinBin which will help in providing a durable, long-lasting finish. For this project I used Rust-Oleum UPVC paint in Black Sand - Matt finish, which I’ve used on my French doors and windows. After a year of exposure to the elements, they still look as good as new!

Materials You’ll Need:

• Rustoleum UPVC paint (colour of choice, I used black sand - Matt Finish)

• Foam roller and trayhttps://amzlink.to/az0iLrLcfckQ9

• Paintbrush

• Sugar soap or mild detergent

• Fine-grit sanding block or sandpaper

• Sealant Remover

• Microfiber cloth

• Drop cloths

• Frogtape or masking tape

You can find all the products you need for this project on my Amazon storefront.

Step 1: Prep Like a Pro

Inspect the UPVC surface for any old or worn-out sealant around the edges. It’s a good idea to remove this before painting, as paint does not adhere to sealant! Trust me, I’ve tried! Use a sealant remover and carefully cut away the old sealant with a utility knife. .. An important note, sealant is there for a reason so it will need to be reapplied once everything’s painted! You can apply a clear sealant or you can colour match to your paint colour!

Once that’s done, start giving the UPVC surface a light sand with fine-grit sandpaper to help the paint grip better. Then, give it a good clean using sugar soap.. You want to get rid of all dirt and grease so the paint can properly stick. Wipe away the dust with a microfiber cloth and make sure it’s completely dry before you get started with the paint.

Step 2: To Tape or Not to Tape?

Now, here’s where I break from tradition—while some people prefer to tape off the edges of the glass, I skip the tape! I’ve got a little trick to fix any paint smudges later on, but feel free to use tape if you want a bit of extra peace of mind.

Step 3: Let’s Get Painting!

Now for the fun part! Grab your foam roller (this gives the smoothest finish) or a paintbrush if you’re working on smaller areas. Apply a thin coat of Rust-Oleum UPVC paint evenly across the surface. Don’t worry if it looks a little patchy on the first coat—we’ll be adding more layers to even it out. For the edges and tricky corners, use a small angled brush to get that neat, professional finish.

Step 4: Dry Time & Recoats

Give the paint enough time to dry between coats usually around 4 hours, depending on the weather. You’ll need at least two coats for a solid, durable finish, but I usually go for three if I want an extra polished look.

Step 5: Stand Back & Admire

Once your final coat is dry, it’s time to step back and admire your hard work! You’ve just given your UPVC surfaces a whole new lease on life, they’ll stay looking fresh and fabulous for years.

Bonus Tips:

• Paint on a dry day—avoid painting when it’s too humid or rainy.

• Test your colour on a small section first to make sure you love it.

• For larger areas, consider using a paint sprayer for a flawless finish.

There you have it! A simple, budget-friendly way to refresh your home’s exterior with UPVC paint. If you give this a try, I’d love to see your results—tag me on Instagram @atthemacs so I can share your transformation! And if you’ve got any questions, just drop a comment below.

Happy painting!

Lorna x

Rust-Oleum UPVC Paint - Black Sand Matt

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DISCLAIMER: My DIY tutorials are intended for assistance and informational purposes only. Always adhere to safety guidelines and utilize the appropriate tools. I cannot be held liable for any accidents or problems that may occur as a result of attempting these projects.