Cleaning and maintenance

Keep your new windows and doors looking great, working perfectly and within their guarantee. They deserve it.

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Caring for your shiny
new windows and doors

With just a little bit of care and attention, it’s easy to keep that ‘new windows and doors feeling’ for years and years. Here we’ve explained the best way to keep them looking their best, with some really helpful tips on care, maintenance, and how to keep your guarantee valid.

uPVC Care

Taking care of uPVC is really easy.

To keep it clean, just wipe it down with warm soapy water. Abrasive products and solvents like glass cleaner, metal polish, and scouring pads may damage gloss finishes or woodgrain effect finishes, so they should be avoided.

If stubborn marks don’t budge, they can be removed with a specialist uPVC cleaner.

To prevent condensation from building up, clear any debris from drainage slots between the bottom of the window and the external sill, and from inside the sashes when the window is open.


What about blinds?

If you’re thinking about installing blinds, make sure that air can flow between the window and the blind. A space of 15mm is ideal. Installers of blinds may attach them to the uPVC, if this happens it may affect your guarantee.


Cleaning your glass

Just use a non-smear glass cleaner product and a paper towel to keep your glass looking shiny and new.

Spray the cleaner directly onto the glass and into the corners, then wipe down vigorously with the paper towel until it’s nearly gone. Then turn over the paper and buff until dry. For the very best finish, do the same to the outside of the window – until you can see your reflection in it.

External Glass

  • Clean every four months
  • Keep it grit and grime free with warm soapy water
  • Finish with a glass cleaner
  • Only use a soft cloth or paper towel.

Internal Glass

  • Clean once a month
  • Finish with a glass cleaner
  • Only use a soft cloth or paper towel.

We're backed by a 10-year manufacturer’s guarantee

We’ll cover the cost of any necessary replacement if the damage isn’t your fault. 

Quality of vision

High quality double glazing provides a high quality of vision. Our glass follows the Glass and Glazing Federation’s Code of Good Practice with regards to manufacturing our products and beyond. As a result, you can expect the following from your windows and doors.

Flat transparent glass, including laminated or toughened (tempered) or coated glass is acceptable if the following are neither obtrusive nor bunched:

  • Bubbles or blisters
  • Fine scratches not more than 25mm long
  • Minute particles.

Toughened glass may show visual distortions which are accentuated by reflections in double glazing. Laminated glass may have more blemishes due to it being made of layers. Such surface colourations and patterns do not indicate a change in physical performance.

How to check

Stand in the room no less than two metres away from the windows and look directly through them.

  • For toughened, laminated or coated glasses, stand no less than three meters away
  • Do so in natural daylight, but not directly towards the sun and with no visible moisture on the surface of the glass
  • Where it is not possible to stand at the right distance then stand as far away as you can from the window
  • Exclude 50mm wide band around edge of the glass from the check
  • Glass should be viewed facing the window straight on, at 90 degrees.

Types of vision

There are three different types of vision.

Double reflection

This occurs in certain light conditions. It is caused by multiple surface reflections in double glazing which may vary from pane to pane.

Brewster’s Fringes

Small transitory rainbow effects are sometimes produced by the glass refraction of light. Their appearance is due to high quality flat glass sheets being placed parallel to each other.

Patterned glass

The above does not apply to patterned glass as its manufacturing process is different.

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Hardware and other bits and pieces

Taking care of uPVC is really easy.


Any metal-to-metal joints that do not have nylon bearings should be lubricated once a year with light engineering oil such as 3-in-1. These joints include friction stays, hinges, espagnolette, gearing mechanisms, shootbolts and locking mechanisms.

Rollers on door bolts, espagnolettes or shootbolt mechanisms that engage with locking keeps should be lubricated once a year with light grease such as lanolin.


Just wipe with a damp cloth and dry thoroughly to remove dirt and dust.

Weather seals

Effective weather seals prevent draughts and stop heat escaping from your home. To keep them doing the job well, clean with a damp cloth. If a seal becomes dislodged from its grooves, simply slide them back into position to avoid damage.

How to keep your hardware clean

Remember to clean your window furniture every four months.

  • Use a soft duster or a damp chamois leather to remove dust and dirt
  • Superior polishings and coatings eliminate the need for regular polishing and cleaning
  • Avoid abrasive products and solvents such as metal polish, scouring pads and acetone.

Cleaning tips

It’s a good idea to remove all rings, bracelets and watches before cleaning glass to prevent scratching.

For your safety, never walk on a bay roof or lean a ladder against the frames, glass or guttering. If access is required above a large bay window, tower fixed scaffolding is recommended.

And remember to use the right cleaning technique for the right part of the window, as outlined below, to keep them looking their best.

Looking after your composite door

Composite doors work hard to protect you and your home, but it’s not hard to look after them. Here’s how to care for each part of the door:

Door Leaf

Wipe away grime and grit with warm soapy water and dry with a soft cloth.

Door frame

Wash with warm soapy water. Stubborn stains might require specialist uPVC cleaner.

External glass

Wash with warm soapy water and a soft cloth. Finish with a proprietary glass cleaner.

Leaded glass

Wash with warm soapy water and a soft cloth, and finish with a proprietary glass cleaner. Natural oxidisation will occur over time.


Take a clean cloth and warm water with a mild detergent, then simply wipe clean to a shine. Add light engineering oil such as 3-in-1 to all moving parts, especially if you live near the coast or an industrial site.


Lubricate with light engineering oil.

Cylinder locks

Use a Teflon-based lubricant, not oil or graphite powder.