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About Us


Our referral scheme

To thank you for being a loyal customer, we want to give something back – all you have to do is refer a friend.

When any friend that you refer accepts their quote, you will be rewarded with £20 of John Lewis vouchers.

Upon completion of the works, you will be entitled to an even further reward, depending on the value of their order:

If your referred friend spends £7,500 + (ex. VAT), you’ll get £100 of John Lewis vouchers.
If your referred friend spends £12,000 + (ex. VAT), you’ll get £200 of John Lewis vouchers.
If your referred friend spends £20,000 + (ex. VAT), you’ll get £400 of John Lewis vouchers.

If you do intend to make use of our referral scheme, please take care to carefully read the details of the scheme below:

1. Customer refers to an individual who has previously contracted Core Sash Windows to supply products and / or perform works, and who has no outstanding invoice(s).

2. Your referred friend will need to inform us, in writing, that you have referred them prior to them paying their deposit. Claims of referral brought to our attention after this point will not be eligible.

3. Referral rewards will be paid out once the referred customer’s works are fully completed, and once their invoice is fully settled.

Enjoy being warm and comfortable!

call us: 020 3302 2060 or email: [email protected]

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