UPVC Windows

Cleaning uPVC windows is simple and enhances their appearance and longevity. Here is the best and safest method to clean uPVC window frames and glass.

1. Dust and Debris Removal

• Open the windows and vacuum any loose dirt, dust, and cobwebs from the hinges, frames, and sills.
• Use a soft brush to loosen dirt in tight areas.

2. Clean the Frames

Mix warm water with mild dish soap.

• Use a soft cloth or sponge to wipe down the uPVC frames. Avoid abrasive pads—they can scratch the surface.
• For corners and grooves, use an old toothbrush.

3. Handle Stubborn Stains

• For scuffs, pencil marks, or mildew:
  • Baking soda paste (baking soda + water) can work well.
  • White vinegar diluted with water is good for limescale or water marks.
• Avoid bleach or solvent-based cleaners—they can damage uPVC.

4. Clean the Glass

• Use a standard glass cleaner or a mix of vinegar and water (50/50).
• Wipe with a microfiber cloth for streak-free results.

5. Dry and Polish

• Use a dry towel or chamois to dry the frames and glass.
• Buff the frames lightly to restore shine.

Yes, you can paint uPVC windows, but it requires proper preparation and the right materials to ensure the paint adheres well and lasts.

Key Things to Know Before Painting uPVC Windows:

1. Age of the uPVC

New uPVC (less than 12 months old) has a “release agent” coating from manufacturing that makes it hard for paint to stick. You will need to wait or thoroughly clean and lightly abrade the surface.

Older uPVC (over 1 year) is more porous and easier to paint.

2. Use the Right Paint

uPVC-specific paint or multi-surface exterior paint (like Zinsser AllCoat, Kolorbond UPVC Paint, or Dulux Weathershield for plastic) is essential.

Avoid regular wall paints—they will not adhere or last.

3. Tools & Materials Needed

Sugar soap or degreaser

Fine abrasive pad or sandpaper (320–400 grit)

Masking tape & dust sheets

Primer (if not using a paint that includes primer)

Synthetic paintbrush or HVLP sprayer (optional for smoother finish)

 How to Paint uPVC Windows – Step-by-Step

Clean Thoroughly

Use sugar soap or a uPVC cleaner to remove dirt, grease, and old polish or silicone.

Lightly Sand

Gently abrade the surface to give it a key for the paint to grip.

Wipe off dust with a lint-free cloth.

Mask Surrounding Areas

Protect the glass, brickwork, and rubber seals with masking tape and sheets.

Apply Primer (if needed)

Some uPVC paints are self-priming, but a dedicated plastic primer improves adhesion on older or exceptionally smooth uPVC.

Paint in Thin Coats

Use a brush, roller, or spray gun. Spraying gives the most professional look.

Apply 2–3 thin coats, allowing proper drying time between coats.

Cure Time

Let the paint cure for a few days before exposing to heavy rain or cleaning.

How Long Will It Last?

Properly applied, uPVC paint can last 5–10 years.

Maintenance is minimal—just clean it gently like usual.

 Caution:

Painting may void warranty from your window manufacturer.

Once painted, you cannot return to the original uPVC finish.

uPVC windows typically last 20 to 35 years, depending on several factors.

Average Lifespan:

• Standard expectation: 20–25 years
• Well-maintained, high-quality uPVC: 30–35 years or more
• Budget or poorly installed units: Might show issues in 10–15 years.

What Affects uPVC Window Lifespan?

Quality of Materials

• Premium-grade uPVC and high-quality glazing last longer and resist yellowing, warping, or brittleness.

Installation Quality

• Poorly installed windows can suffer from draft issues, poor sealing, and early deterioration.

Climate and Environment

• Coastal areas (salt air), extreme heat/cold, and constant sun exposure can age uPVC faster.
• North-facing windows may last longer than sun-exposed south-facing ones.

Maintenance

• Regular cleaning and checking seals, hinges, and drainage channels extend life.
• Avoiding abrasive cleaners or pressure washing helps preserve surface finish.

 Hardware and Seals

• Handles, locks, and rubber gaskets may need replacing every 10–15 years even if the frame is fine.

 Signs Your uPVC Windows Need Replacing

• Drafts or poor insulation
• Condensation between double-glazed panes
• Yellowing, cracking, or warping frames
• Stiff, jammed, or broken hardware
• Noticeable noise from outside
• Increased energy bills

Tip:

If you are approaching the 20-year mark and considering whether to repaint or upgrade, it may be more cost-effective to invest in new windows, particularly for improved energy efficiency. Please let me know if you require assistance in evaluating whether your uPVC windows are still performing adequately or if they warrant replacement.

Due to the uniqueness of every home or business premises we cannot give an accurate costing without a site visit to accurately understand exactly your requirements.

We do not charge a fee for our estimates and normally a visit can be arranged within the next 24 hours.

Please give Karl a call and he will be happy to pop out and see you.