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A Homeowner’s Guide to Long-Lasting Performance

CRK Home Maintenance

When you invest in new windows and doors, you want them to stay looking great and performing at their best for as long as possible. At CRK Windows, we design every product—whether PVCu, aluminium, or composite—to offer exceptional durability. But like anything in your home, a little bit of regular care goes a long way in maximising longevity.

The good news? Maintaining your windows and doors is simple, quick, and helps protect your investment for years to come. Here’s your friendly, easy-to-follow guide on how to keep your frames, glass, hardware, and seals in top condition—all using safe, homeowner-friendly methods recommended by CRK.

Why Maintenance Matters (and How It Saves You Money)

Proper cleaning and maintenance:

  • Extends the lifespan of windows and doors

  • Keeps operation smooth and safe

  • Reduces wear on hinges, handles, and moving parts

  • Keeps seals airtight and energy bills lower

  • Prevents dirt build-up that can cause unnecessary strain

  • Protects warranty conditions

  • Maintains kerb appeal and property value

Regular upkeep ensures you get the very best from your glazing system—whether you’ve chosen modern aluminium windows, classic PVCu frames, or a statement composite front door.

1. Cleaning PVCu & Aluminium Frames

Both PVCu and aluminium are incredibly low-maintenance, but they still benefit from a gentle clean.

✅ How to Clean the Frames Safely

  • Use warm soapy water (mild washing-up liquid is perfect).

  • Wipe frames with a soft cloth or sponge.

  • Rinse with clean water and dry with a microfibre cloth.

❌ Avoid Pressure Washing

High-pressure jets can damage seals, force water behind gaskets, and weaken joint integrity. CRK recommends never using pressure washers on any doors or windows.

🧴 If You Prefer a Specialist Cleaner

You can use a suitable PVCu frame cleaner or aluminium cleaning solution designed specifically for glazing systems. Always test a small patch first.

2. Keeping Your Glass Crystal Clear

Clean glass not only looks great but also ensures maximum clarity and efficiency.

Recommended Method

  • Use warm soapy water or a professional glass cleaner.

  • Wipe with a lint-free cloth or microfibre towel.

  • Dry to avoid streaks.

Want a Hassle-Free Option?

CRK recommends hiring a professional window cleaner regularly—especially for upper floors or large aluminium sliders and bifolds.

3. Maintaining Composite & Aluminium Doors

Your front door is one of the most used parts of your home, so giving it a little extra attention pays off.

Cleaning the Door Slab & Frame

  • Warm soapy water only

  • Wipe downward to avoid streaking

  • Buff with a soft dry cloth

  • Never use abrasive sponges or strong chemical cleaners

Hardware

Keep handles, letterplates, external pull bars, and hinges clean using warm soapy water. Avoid metal polishes unless the manufacturer specifies compatibility.

4. Caring for the Hardware (Hinges, Locks & Moving Parts)

This is a vital part of keeping your windows and doors working smoothly over the years.

✔️ CRK’s Expert Recommendation

Always use a silicone-based lubricant on moving components.

Why silicone?

  • It repels dirt rather than attracting it

  • Doesn’t clog moving parts

  • Safe for rubber seals and plastic components

  • Keeps hinges silent and smooth

❌ Avoid Oil-Based Products

Oil-based lubricants quickly gather dust and grit, which can build up and reduce performance.

Where to Lubricate

  • Friction hinges and stay arms

  • Locking mechanisms

  • Shoot-bolts

  • Keeps and cams on windows

  • Door hinges (if applicable)
    Do this every 6–12 months, or sooner if you notice stiffness.

5. Looking After Your Rubber Gaskets & Seals

Rubber seals are the quiet heroes of energy efficiency. They keep warm air in, weather out, and frames airtight.

How to Maintain Them

  • Wipe rubber gaskets with a damp cloth to prevent drying and cracking.

  • Apply a silicone maintenance spray occasionally for flexibility.

  • Check they sit correctly—if a section slips out, gently press it back into place.

This small step can significantly improve the lifespan of your windows and enhance insulation.

6. Checking Drainage Channels & Trickle Vents

Most windows—and some doors—have built-in drainage to let excess water escape. Ensuring these stay clear prevents future issues.

✔️ Every few months:

  • Open the window

  • Locate the drainage slots

  • Remove debris or dirt

  • Pour a small amount of water to confirm it flows through

Don’t Forget Trickle Vents

Ventilation helps reduce condensation and mould.

  • Slide vents open and clean with a soft brush

  • Avoid pushing anything sharp into the openings

7. Seasonal Maintenance Tips

A quick routine at different times of the year helps keep everything in perfect working order.

Spring

  • Clean frames and glass

  • Check hardware and lubricate

  • Remove winter debris from drainage

Summer

  • Wipe down doors after pollen build-up

  • Check expansion gaps on aluminium doors (normal in hot weather)

Autumn

  • Remove leaves from thresholds and sills

  • Ensure vents are clear

  • Get ready for winter drafts

Winter

  • Avoid forcing frozen windows or doors

  • Keep rubber seals soft with silicone spray

  • Wipe condensation to protect sills

8. The CRK Longevity Checklist (Bookmark This!)

Once every 3–6 months:

✔ Clean PVCu or aluminium frames
✔ Clean glass inside and out
✔ Lubricate hinges and locks with silicone spray
✔ Wipe rubber gaskets
✔ Clear drainage holes
✔ Clean trickle vents
✔ Wipe down hardware
✔ Check for debris in sliding door tracks

Once a year:

✔ Book a professional window clean
✔ Inspect all seals, hinges, and handles
✔ Check composite door alignment

These small actions protect your investment and keep your windows and doors looking as good as new.

Why Regular Maintenance Supports Your Warranty

While all CRK Windows installations come with our trusted guarantees, simple maintenance helps ensure long-term performance and avoids unnecessary wear. Proper care also protects energy efficiency and keeps hardware running smoothly.

If you are ever unsure, our team is only a phone call away—we’re here to help long after installation.

Final Thoughts: Small Steps, Big Difference

Looking after your windows and doors doesn’t need special equipment or complicated routines. With warm soapy water, a silicone-based lubricant, and a few minutes every few months, you can keep your home looking beautiful and performing efficiently for decades.

At CRK Windows, we’re proud to install products designed for longevity—but with the right care, you’ll get even more from your investment.

By CRK Windows – Proudly manufacturing and installing quality glazing since 1977