Wednesday 13 November 2019

The 6 Most Important Accreditations When Replacing Timber Windows and Doors

Are you looking to replace the timber windows and doors in your property? Windows and doors can often be quite an expensive investment and can make a big difference to the value of your home. It is therefore important to research the company prior to deciding who to hire to replace your windows and doors.

The Sash Window Workshop are proud to be members of various accreditation bodies helping customers feel confident that they will receive a high quality product, excellent customer service and that they will continue to be protected after the installation has taken place.

In this article, we explain 6 of the most important accreditations and affiliations to look out for to ensure that you are receiving the high quality product and service that you should expect.


If you are looking to completely replace your windows or doors it is important to choose an installer who is FENSA registered.

FENSA ensure that complete new replacement windows and doors comply with building regulations and will issue a certificate confirming this, which will be required if you sell the property in the future.

Which? Trusted Trader

To qualify as a Which? Trusted Trader a company has to undergo assessments and checks to ensure they meet Which’s strict standards. Once the company has proven that they meet the requirements, they also need to confirm that they will comply with Which’s code of conduct.

Anyone who doesn’t meet these high standards are not endorsed, meaning that only the very best companies can become Which? Trusted Traders.


With increasing awareness and discussion surrounding protecting the environment, FSC certify that new timber sash windows, casement windows and doors are manufactured from timber which has been sustainably sourced.

FSC is the only forest certification scheme endorsed by major environment charities such as WWF, Greenpeace and the Woodland Trust.

To become FSC certified, a company needs to ensure that their timber is sourced in a way that complies with the FSC’s strict environmental, social and economic standards. The company is then audited annually to ensure that they continue to comply with FSC’s standards.

Made in Britain

Made in Britain

An easy way to identify whether the windows and doors are manufactured in the UK, or if they are shipped in from abroad, is to check for the Made in Britain logo.

Made in Britain aims to help customers identify and support local British businesses. By choosing a company who manufacture and install their own windows and doors, if any issues do arise it is likely to be easier to resolve them as you will be dealing directly with one company, rather than two.



The SafeContractor scheme confirms that the company’s health and safety policies meet the recognised industry standards.  This is very important, especially if the company is carrying out work on your property, to ensure the safety of your family and the local community.

View our article explaining further about the importance of health and safety in the window and door industry.


QA National Warranties (QANW)

Before paying any deposit, check that the company has deposit protection insurance to ensure that your payment is protected. It is also important to check that any guarantees offered by the company are also protected, allowing you to feel confident that you are still covered if something was to happen to the company.

One of the largest providers to offer these protections is QA National Warranties.

Obtain a Quotation

To obtain a free, no obligation quotation to replace your windows, contact The Sash Window Workshop on: 01344 868 668.

FENSA logo

Which Trusted Trader

FSC Certified Windows and Doors