What paint should I use on window frames?

Peeling paint and unsightly frames? Find out the best paint to use on old windows and the right way to prep them for a revamp.



Look at options like:

• Dulux Weathershield
• Zinsser Allcoat Exterior Water-Based Paint
• Paintmaster Oil-Based Satinwood Paint
  
  

Aluminium

Things to consider

For aluminium frames, it's important to use a  rust-inhibiting primer before coating with an exterior-grade, high-adhesion metal paint.

What's the best type of paint for aluminium windows?

After applying your metal primer, use a high-quality acrylic latex paint or epoxy-based paint to protect your aluminium frames. These options are able to withstand thermal expansion and contraction and offer superior adhesion to the window frame's surface.

Consider options like:

• Sandtex 10 Year Exterior Gloss Paint
• Dulux Weathershield
  
  

Tips for getting the best finish

Don't forget the prep

Prepping your window frames properly can make all the difference to the overall quality of your painted finish.

Proper preparation will ensure your new paint adheres properly and creates a smoother, more professional appearance. It can also provide longer-lasting protection against the elements.

Prepping uPVC windows for painting

UPVC requires a thorough clean with warm, soapy water or sugar soap, as well as a degreaser. This should rid the frame of any dirt, grease or silicone residue in preparation for its makeover.

Gently abrade the surface of the frame using fine-grit sandpaper to create a slightly rough surface for the paint to stick. Be careful not to remove the top layer of plastic.

Now, carefully apply masking tape around windows and brickwork to help guard against the inevitable mishaps. For best results, apply a specialist uPVC primer before painting to ensure maximum adhesion.

Prepping wooden windows for painting

Preparing wooden frames can be time-consuming, but it's crucial for ensuring the longevity of your windows.

Start by cleaning the frame well, removing any dirt and debris, before using a scraper to remove any loose or flaking paint.

Check for signs of moisture damage by looking out for any soft or discoloured areas of wood. Rot or mould will need to be repaired and treated before any work continues.

If you're satisfied with the condition of the frame, fill out any cracks or holes with an exterior wood filler. Now, sand down the entire frame to give yourself a smooth canvas.

Carefully apply masking tape to any areas that should not be painted, and use a good-quality wood primer to seal the wood. This will ensure proper adhesion and prevent any tannin stains from bleeding through the paint.

Prepping aluminium windows for painting

For aluminium   frames, use a mild detergent or isopropyl alcohol to remove any dirt or grease before starting work.

Check for any signs of rust, removing them with a 1:1 mixture of white vinegar and water. For deeper oxidation, you may need to use an 80- to 100-grit sandpaper to carefully sand it down.

Now, remove any old peeling or flaking paint before lightly sanding the entire frame to create an ever-so-slightly rough surface for the paint to grip. After applying your masking tape, finish prepping the frames by giving them a coat of high-quality self-etching primer or specialised metal primer.

Watch the weather forecast

Repainting your old windows can be time-consuming. So, it's crucial to make sure you plan your labour for when there is an extended stretch of dry weather expected.

Why? Because rain and high humidity can prevent your paint from curing correctly and adhering to the frames properly. This could potentially lead to mould and mildew buildup, blistering or peeling paint and a streaky, uneven finish.

Out with the old and in with the new?

Sometimes, even a good lick of paint can't refresh a tired old window.

If your windows are very worn or damaged, painting them could just mean kicking the problem further down the road. It might make financial and practical sense to replace them rather than invest in repeated quick fixes that don't address the underlying issues.

What's more, old windows typically perform less well than modern windows, even if they're in good condition. Buying new windows could drastically improve thermal efficiency and security – two benefits that may add up to substantial cost savings in future.

If you're in Yorkshire, we'd be delighted if you consider Calder Windows. With more than 30 years of experience in supplying and fitting windows, we're the region's top choice for quality, workmanship and trust. All window installations come with a 10-year warranty as standard.

To get started, take a look at our window fitting services. And please don't hesitate to get in touch with our friendly team to discuss your options or request a quote.