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8 Tips to Maintain your uPVC Sash Windows

8 Tips to Maintain your uPVC Sash Windows

8 Tips to Maintain your uPVC Sash Windows

uPVC sash windows have stood the test of time for over three centuries due to their enduring design. Whether nestled within a historic residence or adorning a contemporary apartment, these windows uphold the ageless charm of any property. 

Much like the allure of a fireplace, sash windows contribute significantly to a property’s character and ambience. With diligent maintenance, these windows possess the remarkable capability to endure for generations, becoming cherished fixtures that transcend time.

Occasionally, your sash windows may require a bit of attention to maintain their optimal appearance. Let’s face it, periodic upkeep is just part of the package when it comes to owning these classic, character-rich windows. However, with consistent care, keeping them in top shape is a breeze.

Here at First Glaze, we offer high quality uPVC sash windows that are not just durable and aesthetic, but also don’t require constant upkeep.

Below, we’ve compiled our top ten maintenance tips to help you preserve the traditional charm of your home without sacrificing efficiency. These simple steps ensure your sash windows continue to enhance your property’s aesthetic appeal for years to come.


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Keep your Windows Clean

Avoid using paper towels to clean your windows, as they tend to spread dirt and create static on the glass, attracting even more dust. Instead, opt for a microfiber cloth and glass cleaner for effective cleaning without harming the environment.

Aim to clean the external window panes once or twice a year, preferably on overcast days to prevent streaks caused by rapid drying in the sun.

Maximise the benefits of natural light, by keeping your windows clean and enjoy unobstructed views!


Stop your Windows from Sticking 

Sticking is a prevalent issue with sash windows, but it’s easily remedied. Smooth operation is crucial, and often, sticking occurs due to paint buildup, effectively sealing the window shut. If you notice paint on the window sills or frame, gently run a knife or sharp object along the edges to free it.


Pro Tip: Remove paint from hardware by soaking it overnight in warm, soapy water in a Crock-Pot.

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Enhance your Window Insulation:

Did you know that up to 26% of heat loss occurs through poorly insulated windows? Not only does this result in higher energy costs, but it also impacts your comfort. To maintain optimal insulation, focus on sealing any gaps around your windows. Start by replacing worn rubber seals to minimise air and water leaks, while also securing the window in place. Additionally, consider using spray-form insulation to further seal your windows. 


Oil your Windows for Smooth Operation:

Ensuring your windows move effortlessly not only preserves them but also prevents unnecessary strain on yourself. Apply wax or oil to the frame, hinges, and all interior and pulley features to maintain smooth operation. 


Silicone is an excellent option for stuck window frames due to its colourless nature and lack of sticky residue. Before applying any lubricant, make sure to thoroughly clean the window of dust, dirt, and cobwebs, ensuring it is dry for optimal application.


Regularly Monitor your Windows for Rot:

Regularly inspecting your uPVC sash windows is crucial for detecting and addressing rot, a common issue with outdoor wooden products. Rot, fueled by moisture, can compromise both the appearance and structural integrity of the wood, potentially leading to leaks.

If you spot superficial rot, clean the affected area thoroughly with a damp cloth, removing any debris, and then apply a wood hardener. This quick-drying liquid strengthens and reinforces rotting or decaying wood effectively.

For more extensive damage, consider removing the entire sash window for thorough treatment. Chemical stripping and sanding down the affected areas allow for reuse of salvageable parts, ensuring the longevity of your windows.


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We take pride in offering the finest uPVC sash windows available, featuring exceptional energy efficiency, aesthetic appeal, and effortless maintenance. Our commitment lies in delivering outstanding products and services, whether you’re considering updating a single window or multiple ones.

Should you require any assistance or have inquiries, our friendly team is always available to help. Your satisfaction is our priority, and we’re dedicated to ensuring you receive the support you need.

To get a bespoke quote with us, use our online quoting tool today!

Free Online Quote Call: 01634 931 098
01634 931 098