Window and door manufacturers and fabricators offer warranties to installation companies that cover specific parts of the windows or doors. The length and breadth of cover varies between different manufacturers and fabricators.

For example, all of our warranties cover the following on their windows and doors:

• Frames: 10 years
• Glass: 5 years
• Moving parts: 1 year

This guarantee means that if anything goes wrong with the windows or doors within a certain period of time, Sanderstead Windows will repair or replace them at no cost to the customer.

In the double-glazing industry, there have been cases where installation companies have gone out of business, leaving customers with no warranty coverage. This can be avoided by using an insurance-backed guarantee.

An insurance-backed guarantee is a type of insurance policy that covers the cost of repairs or replacements if the installation company goes out of business. This type of guarantee is offered by reputable installers, and it is a requirement for membership in industry organisations, such as FENSA.

Sanderstead Windows offers an insurance-backed guarantee to all of its customers. The guarantee is for a period of 10 years from the date of installation. Sanderstead Windows uses IWG, one of the largest insurance-backed guarantee providers in the UK, as its regulated insurance specialist.

Warranties and guarantees are both important protections when purchasing new windows and doors. However, there are crucial differences between the two.

A warranty is a promise from the manufacturer or installer that they will repair or replace the product if it breaks or malfunctions within a certain period of time. A guarantee is similar, but it’s usually offered by the installer, not the manufacturer. It can also be called an insurance-backed guarantee. It means that if anything goes wrong with the windows or doors within a certain period of time, the installer will repair or replace them at no cost to the customer.

Any reputable installer will provide you with both a warranty and an insurance-backed guarantee. This is because a warranty without an insurance-backed guarantee leaves you unprotected in the event that the installer goes out of business. In this case, you would not be able to make a claim directly with the manufacturer, as the manufacturer’s warranties do not extend to the homeowner – they are an agreement between the manufacturer and the installer.

An insurance-backed guarantee without a warranty also leaves you unprotected. This is because you can only make a successful claim in the event that the installer ceases to trade. If the installer is still in business, you would need to make a claim under the warranty.

It’s important to understand the difference between a warranty and an insurance-backed guarantee when choosing an installer. Reputable installers will offer both types of protection.

Here at Sanderstead Windows, we offer all of our customers with warranties and insurance-backed guarantees. This means that you can be confident that your new windows and doors will be repaired or replaced if they break or malfunction within 10 years of installation.

Sanderstead Windows provides a standard 10-year manufacturer’s warranty on all window and door frames. In some cases, our manufacturers may offer a longer warranty to protect your frames against specific issues.

To claim on your warranty, please contact us and we will be happy to assist you.

Sanderstead Windows provides a standard 5-year  warranty against the failure of the hermetic seals in glass-sealed units in windows and doors installed by us.

The hermetic seal is the barrier between the two panes of glass in a double- or triple-glazed unit. It prevents moisture from entering the unit, which can cause condensation and fog. If the hermetic seal fails, it can lead to a number of problems, including:

• Reduced energy efficiency
• Condensation and fog
• Noise pollution
• Reduced lifespan of the unit

If you experience any of these problems, please contact Sanderstead Windows and we will be happy to inspect the unit and repair or replace it as necessary.

Standard Warranty
All metallic moving parts on your replacement windows and doors, such as handles, hinges, and locks, come with a standard 12-month manufacturer’s warranty. 

Extended Warranty
In some cases, our manufacturers may offer a longer warranty on specific moving parts. Please check with the manufacturer for details.

Claiming on Your Warranty
If you need to claim on your warranty, please contact us and we will be happy to assist you. We will need to inspect the affected part and determine if it is covered by the warranty. If it is, we will repair or replace the part at no cost to you.

Your Sanderstead Windows Warranty Covers:

• Manufacturing defects and damage: Sanderstead Windows will repair or replace any parts that are found to be defective or damaged due to manufacturing errors.
• Weather and corrosion damage: Sanderstead Windows will repair or replace any parts that are found to have been damaged by weather or corrosion, but only if the damage is considered to be unreasonable.
• Inferior workmanship: Sanderstead Windows will repair or replace any parts that are found to have been installed incorrectly or that have failed due to inferior workmanship.

The Sanderstead Windows warranty and guarantee do not cover the following:

• Damage caused by accident or negligence: If any part of your windows or doors is damaged due to accident or negligence, such as by being hit by a car or by being dropped, it will not be covered by the warranty or guarantee.
• Normal wear and tear: The warranty and guarantee do not cover blemishes or faults that arise from normal wear and tear. For example, if the paint on your windows or doors starts to fade or if the seals start to leak, this will not be covered by the warranty or guarantee.
• Self-repair: If you attempt to repair any part of your windows or doors yourself, this will invalidate the warranty and guarantee. If you need any repairs, please contact Sanderstead Windows customer service and they will be happy to assist you.

Your Sanderstead Windows warranty or guarantee will automatically start once your installation is complete

Our friendly office team will register your installation with our specialist insurance-backed guarantee provider, IWG.

Yes, we guarantee that your installation will comply with building regulations. We are a FENSA-approved installer, which means that we are legally required to comply with building regulations and register your installation with the local council.

You will be issued with a FENSA certificate after installation. This certificate provides proof that your installation complies with building regulations, uses energy-efficient products, and is registered with the local council.

It is a legal requirement to provide proof of building regulation compliance when selling your home. Therefore, it is essential that you keep your FENSA certificate safe. If you misplace your certificate, you can order a replacement directly from FENSA’s website..

Please note that not all installers comply with building regulations. If you choose an installer who is not FENSA-approved, you may be responsible for paying the costs of an inspection by building control and any necessary repairs if your installation is found to be non-compliant.

We understand that even the best windows and doors can sometimes have problems. If you experience any issues with your windows or doors, please let us know so we can fix them for you.

Here is how to make a warranty claim:

1. Take clear photos and videos of the problem. This will help us to diagnose the problem and determine the best course of action.
2. Contact us here.
3. We will review your claim and contact you with our decision.

If we were to cease trading for any reason, your warranty would still be in effect thanks to our insurance policy.

Your insurance-backed guarantee policy document will contain all the information you need to make a claim. For more information on the claims process, please visit IWG’s website.

We are always happy to help assess and repair any problems with our windows and doors, even if they are outside of the warranty period. Please do not hesitate to contact us if you have any problems.

Our team of experts will be able to advise you of any additional charges that may be applicable once we have identified the issue and the work or parts required to resolve it.