Table of Contents
Quick Takeaways of the post:
Cleaning UPVC window frames increases kerb appeal.
Mild soap, warm water, and microfibre beat harsh chemicals and prevent dulling.
Avoid using bleach, spirits, WD-40, and abrasives, as they can stain or etch UPVC.
Maintain seals/hinges and clear drainage to keep windows operating smoothly and mould at bay.
When choosing window frames, one of the major considerations is maintenance. We want our windows to look good all year round, without too much effort.
You may have read that UPVC windows require little maintenance, but what does that mean in practical terms? And are they truly that easy to clean?
In this blog, we’ll outline the best way to clean your UPVC window frames, including which products to use and which may be harmful, as well as how to take better care of the entire window.
Why Clean Your UPVC Window Frames?
Cleaning your UPVC window frames is a quick and cost-effective way to enhance curb appeal.
Although UPVC frames typically don’t require painting or repairing, they do need regular cleaning to keep them looking their best.
Dirty windows are not only ugly, but they can also hide damage, compromise function, and detract value from your property.
Potential buyers may assume dirty windows are old and be put off by the idea of them needing to be replaced.
And with an increase in potentially harmful sea-salt spray in the North West, combined with the urban grime and soot prevalent in many Greater Manchester cities, it is increasingly important that we clean and maintain our windows.
The outside of your windows will require more regular cleaning than the interior, but don’t neglect the inside either, as this can cause a buildup of condensation.
The safest way to clean uPVC (quick method)
The quickest and safest way to clean UPVC is with warm water and washing-up liquid:
- Open the window as far as it will go without resistance.
- Ensure that the water is warm to dissolve dirt faster, but not too hot to use
- Add a small amount of mild detergent.
- Use a microfibre cloth to apply light pressure.
- Rinse and dry.
- Clean the glass with the same solution or a purpose glass cleaner.
- Be careful with high windows or use a telescopic window wiper.
As with most things, it’s a faster job if done regularly. We recommend at least wiping the frames down every couple of months.
Products that work (and what to avoid)
The best thing for cleaning UPVC window frames is warm water with a squirt of washing-up liquid. You can also use white vinegar diluted to remove stubborn grime and clean the glass, either with a microfibre cloth or newspaper. You can also use a purposely designed UPVC cream to remove stains from UPVC window frames.
You should always follow the manufacturer’s guidelines to avoid voiding your warranty. Most UPVC windows will include a warning about bleach, as it can cause irreversible damage to your frames.
WARNING: Mixing bleach and vinegar can also result in highly toxic fumes that can be lethal.
Step-by-step: Deep clean (10 steps)
Follow this quick 10 step guide for gleaming UPVC windows:
- Dust and vacuum frames/hinges, openers and rebates using the soft brush attachment..
- Wash frames with warm soapy water and a microfibre cloth; light pressure.
- Rinse and dry.
- Squeegee glass separately.
- Spot-treat scuffs with purpose UPVC cream; test in an inconspicuous spot
- Mould: clean with diluted vinegar, wipe; never bleach.
- Aftercare: use a light multi-purpose oil on hinges/locks;
- Clear drainage slots
- Check seals/gaskets (no stretching, gaps, or cracks) using chalk or talcum powder.
- Wipe clean.
What not to use (with pros/cons table)
Item / method | Pros (if any) | Cons / risks | Verdict |
Bleach | Disinfects | Can brown/etch uPVC; irreversible | Avoid |
White/ methylated spirits | Cuts tar/adhesives | Solvent damage, staining | Avoid |
WD-40 | Lubricates metal | Oily residue on plastic; can mark | Avoid on frames (ok sparingly on metal parts, off the plastic) |
Abrasive creams/powders | Remove grime | Micro-scratches → dull finish | Avoid |
Scouring pads/steel wool | Aggressive clean | Scratches, visible on colours | Avoid |
Mild soap + microfibre | Gentle, safe | May need repeat passes | Use |
Purpose UPVC cream | Lifts marks | Patch test; follow label | Use with care |
Stubborn issues: mould, marks & yellowing
With unchecked internal or external window condensation, mould can occur. If you have inherited mould along with a property, or noticed it in a room, use the following natural recipe to get rid of it.
Window frame mould removable recipe:
- Mix a 1:4 vinegar and water solution
- Leave dwell for 10 minutes
- Apply to the affected areas
You can also buy vegan, non-toxic mould removal gels online, which can be used safely on UPVC windows.
For stubborn marks, try a UPVC cream, but be aware that yellowing caused by oxidation cannot usually be reversed.
How Manchester Window Factory can help
Sometimes cleaning your windows can reveal hidden damage or discoloration. If you think you may need to replace your windows, please get in touch for a free, no-obligation assessment and quote.
Our CERTASS-certified professional fitters can replace your windows with a seamless like-for-like A-rated match, with your choice of glazing and added energy-efficiency benefits.
Summary & Key Takeaways
Maintaining your UPVC windows largely means following the manufacturer’s guidelines and cleaning regularly with suitable substances.
Remember, never use bleach on UPVC and pay extra attention to foils or woodgrain finishes. Warm soapy water and a microfibre cloth are the safest option for most windows, but white vinegar and UPVC purpose cream can also be useful in removing stubborn marks.
Don’t neglect the metalwork, and ensure seals and drains stay clean and dry when possible.
You can follow the same process to clean UPVC doors.
How to Get in Touch
To request a free brochure, you can call us on 0161 976 4739, use our contact form or chat with us via the chat button at the bottom right of this website. If you live locally, you can also visit our Altrincham showroom, and check our contacts page for up-to-date opening hours.
We look forward to hearing from you!
FAQs
WD-40 is not suitable for UPVC and should only be used on metal hinges and locks. Do not spray it directly onto the window; apply it with a cloth, and wipe away any excess immediately..
Yes, if your UPVC windows have a foil or woodgrain finish, they will show scratches more, so you need to be careful not to damage it with abrasive solutions and materials. Always do a patch test before cleaning to test that no damage or discoloration occurs.
We don’t recommend using bicarbonate of soda to clean UPVC as it is mildly abrasive and can dull or scratch. A purpose UPVC cream or mild soapy water solution is a better option.
Yes, white vinegar is safe to use on UPVC windows, diluted to around 1:4 for tough spots, provided you avoid it soaking into the seals. However, do not mix it with bleach, as this can create a highly toxic chlorine gas.
Yes, you can use the same mild washing-up liquid solution to clean the glass and your UPVC frames simultaneously.