PVC windows are a popular choice for many homeowners, and for very good reason. They’re durable, energy-efficient, and low-maintenance. But like anything in your home, they still need a bit of care now and then to keep them looking and performing their best. 

In this blog, we’ll walk you through the best way to clean and maintain your PVC windows without causing any accidental damage. Whether you’ve had your windows installed by us recently or they’ve been in place for years, these tips will help you keep them in tip top shape. 

Cleaning the glass 

Let’s start with the obvious part: the glass. You might think any old glass cleaner will do the job, but with PVC windows, there’s a bit more to it. 

Stick to warm, soapy water 

All you need to clean the glass effectively is some warm water and a mild detergent, even just washing-up liquid will do. Use a soft cloth or sponge to gently wipe the surface. Avoid anything abrasive, as it can scratch the glass or the frames. If you’re using an older sponge, make sure there’s no bits of dirt or grit caught in it otherwise this could scratch your windows. 

Avoid solvents at all costs 

Solvent-based cleaners might seem like a good idea for stubborn stains, but they can actually do more harm than good. Not only can they corrode the PVC material over time, but they can also strip the colour from composite doors or coloured window frames. Especially if you’ve got anthracite grey or woodgrain finishes, those solvents can cause real damage. 

Drainage maintenance 

Here’s a little-known fact; your PVC windows are actually designed to let in a bit of water. It might sound a bit odd, but it’s all part of the system. 

Water fills the track? Totally normal

If you’ve noticed water sitting in the bottom track of your window, don’t panic. This is actually normal. Windows are made with a built-in drainage system that lets any water that gets in safely drain out. 

What is that ‘black gunk’ really? 

That black stuff you see at the bottom of the window is not because of a leak. It’s just dirt and debris that’s built up in the drainage channels. Over time, dust, pollen, and other outdoor bits can clog the system and slow drainage. 

Here’s what to do: 

  • Open the window fully. 
  • Use a soft brush or cloth to clear out any dirt from the drainage holes and tracks. 
  • Then wipe down the area with warm soapy water (again, no solvents!). 

Doing this every few months, especially after heavy rain or if you live near trees, will keep things flowing smoothly. 

Caring for your window’s rubber seals and hinges 

Your PVC windows also come with rubber seals to help keep drafts and moisture out, and hinges to ensure smooth operation. Both need a little TLC now and then. 

Rubber seals 

Don’t overdo it 

You don’t need to clean the seals every time you clean the windows. In fact, overcleaning or using harsh chemicals can actually weaken them. A gentle wipe with a damp cloth every now and then is more than enough. 

Keep an eye out for damage 

If you notice the seals are cracked or pulling away from the frame, give us a ring. It’s best to sort these things early before they become a bigger issue. 

Hinges and moving parts 

Leave the hinges alone (mostly) 

We know that it’s tempting to adjust things yourself, especially if a window starts to stick. But in our experience, fiddling with hinges without the right tools or know-how often makes things worse. 

Our advice: 

If your window sticks, or you’ve left it closed for a long time and now it’s hard to open, it’s best to call your installer, especially if it’s still within the warranty period. At Birmingham Glass, all of our windows and doors come with a 10-year warranty as standard.  

A light spray of silicone lubricant (never oil-based!) on the hinges every 6–12 months is fine, but beyond that, let the experts handle it. 

Bonus window maintenance tips! 

  • Don’t worry if you see condensation between the panes. This might mean the sealed unit has failed. It’s not dangerous but give us a call so we can assess whether a replacement is needed. 
  • Got coloured frames or doors? They’re a bit more sensitive. Avoid any strong cleaners or abrasive cloths, just warm water and a soft sponge will do the job perfectly. 
  • Need your original window spec or warranty details? If your windows were installed by us, you can contact us directly as we keep order records and can help you with any product info or support. 

Final thoughts 

Once your PVC windows are installed, they really shouldn’t need much work, just a bit of regular care, like any other part of your home. Stick to warm soapy water for cleaning, don’t use solvents, and steer clear of making adjustments on your own. If something doesn’t seem right, or you’re not sure what to do, Birmingham Glass is always here to help.  

 

Whether you’ve got a sticking window, a clogged drainage track, or a question about your order, give us a shout, we’re just a phone call or an email away.