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From time to time we run promotions on specific products or combinations of work. If there’s a deal on when you’re quoting, we’ll make sure it’s applied and we’ll show you the saving on your written quote. No gimmicks, no “today only” urgency, no inflated prices dressed up as discounts.



Here’s what’s currently running.

Offer 1

Example: Free 40mm triple glazing upgrade on full house replacements

Get the upgraded 40mm triple glazing specification included at no extra cost on qualifying full-house window replacements. Better thermal performance, quieter rooms, and more comfort year-round, for the price of our standard double glazing specification.



  • Applies to: [scope to be confirmed]
  • Offer ends: [date to be confirmed]
  • Minimum order: [threshold to be confirmed]
  • Terms: [full terms to be confirmed]

Offer 2

Example: Aluminium-look uPVC casement window offer

Get the slim, contemporary look of aluminium casement windows at a uPVC price point. Our aluminium-effect uPVC profile gives you the dark anthracite appearance and slimmer sightlines without the aluminium premium.



  • Applies to: [scope to be confirmed]
  • Offer ends: [date to be confirmed]
  • Minimum order: [threshold to be confirmed]
  • Terms: [full terms to be confirmed]
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We quote the full price first, then apply the discount

You always see the underlying price before the offer is applied. That way you can compare Calder’s base pricing to anyone else’s without being misled.

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No fake countdowns

If an offer has a real end date, we’ll tell you and show it clearly. If there’s no fixed end, we won’t pretend there is one.

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No “sign today” pressure

We’ll never tell you the offer disappears if you don’t commit in the showroom. Take the quote home, think about it, compare it, come back when you’re ready.

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Written terms before you commit

Before you sign anything, you get the full terms of the offer in writing. What’s included, what’s excluded, any minimum order values, and any exclusions. Plain English, no buried fine print.

When the best deals are usually on

Offers come and go, but there are a few rough patterns worth knowing.

  • End of quarter can be a good time because manufacturers sometimes run promotional pricing
  • Off-peak season (January, February, November) usually has the best availability and can sometimes come with promotional pricing
  • Showroom visits occasionally get a small extra incentive if you’re ready to commit
  • Combined projects (windows + doors + roof) sometimes qualify for bundle savings
  • 

The best approach is to get a quote and ask us what’s currently running. We’ll tell you.

Finance on top of special offers

Most of our special offers can be combined with our finance options, so you can spread the cost of a discounted project over a term that suits you. Interest-free credit is sometimes available on qualifying projects.

Special offer FAQs

  • Are special offers available on everything?

    No. Offers usually apply to specific products or project types, and they change from time to time. Ask when you quote and we’ll tell you what’s available.

  • Can I combine multiple offers?

    Sometimes. It depends on the specific offers and their terms. We’ll check when we quote.Describe the item or answer the question so that site visitors who are interested get more information. You can emphasize this text with bullets, italics or bold, and add links.

  • Do special offers apply to repeat customers?

    Yes. Previous customers aren’t excluded from promotional offers.

  • How do I make sure I get the offer applied?

    Just mention the offer when you contact us, or ask at quote stage. We’ll check eligibility and apply anything that fits.

  • Are there hidden conditions?

    No. The full terms of any offer are written down and given to you before you commit to anything. If you can’t see a term clearly, ask us to point it out.

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Ready to see what’s on offer?