How to Clean uPVC
uPVC is a tough, low-maintenance material, but that doesn’t mean it never needs cleaning. Over time, dirt, algae, and mould can build up on your uPVC surfaces and leave them looking tired and grubby. In this guide, I’ll walk you through how to clean uPVC properly—whether it’s your window frames, doors, gutters, or conservatory. I'll also share why keeping it clean is so important and how a local company like Outside in Cleaning can help if you’d rather leave it to the pros.
Why Cleaning Your uPVC Matters
uPVC is popular for a reason. It's durable, long-lasting, and needs far less upkeep than wood or metal. But even though it's low maintenance, it's not completely maintenance-free. If left too long, grime, mould, and algae can build up, especially on white uPVC. This can make your home look older and neglected. The good news? A simple clean can totally transform it and keep it looking fresh for years.
The Best Way to Clean uPVC
Whether you're tackling uPVC windows, doors, fascias, soffits, or cladding, the method is mostly the same. Here's how to do it step-by-step.
What You'll Need:
Soft cloths or a non-scratch sponge
Bucket of warm water
Mild dish soap
Soft brush or vacuum (for corners and crevices)
Hose or clean water for rinsing
Vinegar (for tougher dirt or mould)
Squeegee (for windows)
Step-by-Step Cleaning Guide
1. Start with a Dry Dust-Off
Brush off loose dirt or cobwebs with a soft brush or vacuum using a soft attachment. This is especially important around frames and hinges.
2. Make a Soapy Solution
Mix warm water with a little washing-up liquid. Use this to wipe down the uPVC surfaces with a soft cloth. For windows, wipe both the frame and the glass.
3. Rinse Thoroughly
Use a hose or clean water to rinse the soap away. This prevents streaks and removes any leftover grime.
4. Tackle Stubborn Dirt or Mould
If there's mould or algae:
Mix 1 cup of vinegar with 4 cups of hot water.
Spray it onto the affected area.
Leave it for 10 minutes.
Wipe it down with a clean cloth.
5. Dry and Buff
Use a dry cloth or kitchen roll to buff the uPVC and get a nice, clean finish. For windows, use a squeegee to avoid streaks.
What Not to Use on uPVC
Avoid These Common Mistakes:
No bleach – It can stain or damage uPVC.
No scouring pads – They scratch the surface.
No white spirits or WD40 – They can cause permanent discolouration.
No ammonia or harsh chemicals – These may dull the surface.
If your uPVC has self-cleaning glass nearby (like on conservatory roofs), avoid using any detergent on the areas touching that glass.
uPVC Cleaning Services in Cheshire
Cleaning uPVC yourself is totally doable, but sometimes it’s easier to leave it to the pros—especially for hard-to-reach spots like gutters and conservatory roofs.
Outside in Cleaning are professional uPVC cleaners in Congleton, Alderly Edge and surrounding areas. They clean:
Fascias and soffits
Conservatories (including roofs)
Window frames and doors
Cladding and carports
They use modern tools like reach-and-wash systems and gutter vacuums with cameras, so you can be sure the job’s done properly.
Contact Outside in Cleaning for a free quote today and bring life back to the outside of your home.
FAQ: Why is uPVC Cleaning Important?
Q: Do I really need to clean uPVC regularly?
Yes! Even though it’s low maintenance, uPVC still collects dirt and organic buildup like mould and algae. This can cause staining, discolouration, and even damage if left too long.
Q: How often should I clean uPVC?
Most homeowners clean uPVC once a year, but if you live near trees, in a busy area, or in a damp climate, you might need to do it twice a year.
Q: What are the signs my uPVC needs cleaning?
Look for visible dirt, cobwebs, black mould, green algae, and any staining or dullness. These are all signs it’s time for a clean.
Q: Is it better to hire a professional?
If you want a deep, safe clean without climbing ladders or dealing with tricky areas, yes. A pro like Outside in Cleaning can get the job done faster, safer, and with better results.
