Our products are guaranteed to last

All our products are custom built to your own specific measurements in our state-of-the-art factory using only the highest quality materials, ensuring your home improvements last for years after their installation. To put your mind at ease, everything we sell comes with a comprehensive insurance-backed guarantee. 

If your new products break or aren’t performing as they should, then contact us to discuss the steps required to resolve the issue. We will repair or replace any faulty PVCu and aluminium windows and doors for free, providing the defect occurs less than 10 years after its manufacture. 

Please read full terms and conditions and if you have any questions or are unsure if you’re still under guarantee, get in contact with one of our advisors with a copy of your contract to hand. 

To ensure your new windows and doors last for as long as they can, they’ll require some TLC from time to time. Don’t worry, only simple maintenance is required to keep them looking and feeling like new. Below we’ve explained step by step some easy ways to keep your Britannia products looking their best, including some useful hints and tips on care and upkeep so that your guarantee remains valid.

uPVC Care

uPVC is easy to maintain

uPVC is a very easily maintained material, which is part of what makes it a popular product for our windows. Keeping uPVC clean takes no more than a simple wipe down with warm, soapy water. There is no need for any special products, or rough cleaning pads, which can actually damage the finish. 

From time to time, condensation may build up on uPVC. This can be prevented by periodically checking the drainage slots between the bottom of the window and the outer sill and removing any debris that may block airflow.

Glass Care

When it comes to glass, there may be some small blemishes of faults, no matter the quality. These are normal imperfections, and you can rest assured all our glass will be assessed in keeping with Glass & Glazing Federation guidelines.

For streak-free glass care, use a paper towel and glass cleaner spray for the best results. Simply spray a good amount of the cleaner onto the glass and wipe thoroughly with the paper towel, working in circular motions until the liquid is worked in. Turn the paper towel over and buff until dry and clear.

External Glass

  • Clean well every 10-12 weeks
  • Remove any grime with warm, soapy water
  • Finish and buff with a non-smear glass cleaner
  • Use a paper towel or soft, microfibre cloth

Internal Glass

  • Clean well monthly
  • Finish and buff with a non-smear glass cleaner
  • Use a paper towel or soft, microfibre cloth


Any hardware in your windows or doors that include metal-to-metal joints without nylon bearings requires some annual maintenance. To keep the joints lubricated, use a 3-in-1 oil or spray on any hinges, shoot bolts, locking mechanisms, friction stays, espagnolettes, and gearing mechanisms to ensure longevity.

For any shoot bolt mechanisms, espagnolettes, or rollers on door bolts that engage with a lock keep, lubricate annually with a light grease.

Hardware cleaning

  • Use a soft material for cleaning or dusting
  • Clean any window furniture every 10-12 weeks
  • Avoid abrasive solvents and materials
  • Quality coating reduces the need for regular cleaning and polishing

Cleaning tips

  • Remove any jewellery or clothing that may scratch the glass as you clean
  • Never place a ladder against glass frameworks or walk on a bay roof. For difficult access around a conservatory or bay window, scaffolding is the recommended option
  • Follow the recommended cleaning techniques per material for the best outcome


Handles can be cleaned with a damp cloth to remove dirt and dust. Dry thoroughly after cleaning.


Weather seals are important to the efficiency of your home by preventing draughts and heat escaping from your house. Keep them in good condition by cleaning with a damp cloth when they begin to gather dirt and grime. If they become dislodged, simply slot them back into position.

Composite doors

Our composite doors are an integral part of keeping your home safe and efficient. Learn how to maintain each part of the door for maximum longevity.

Door Leaf

Clean with a damp cloth to remove any dirt, then buff dry.

Door frame

Clean thoroughly with warm, soapy water. Tackle any tough stains with a specialist uPVC solution

External glass

Use a soft cloth and warm, soapy water to remove any dirt, then finish with a non-smear glass cleaner and buff dry.

Leaded glass

Clean with a soft cloth and warm, soapy water. Finish with a non-smear glass cleaner and buff dry. Some oxidation will occur naturally over time and cannot be prevented.


Using a soft cloth and warm, soapy water, wipe clean until shiny. Add a light lubricant 3-in-1 on any joints to maintain free movement.


Use a light engineering oil to lubricate periodically.

Cylinder locks

Use a Teflon-based lubricant to maintain and avoid oil and graphite powder.

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We have various low-cost finance options available. Get a quick quote and apply for finance at the same time.

Customer stories

We pride ourselves on outstanding customer service and enjoy hearing your experiences of our products in your homes.