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uPVC Bay or Bow windows


  • Delivery in approx. 7-10 working days*

  • Compliant with Document 'L' (Part 'L') of Building Regulations

  • Internally Beaded

    = Security & Ease of Installation
  • 5 Chamber System

    = Strength & Thermal Efficiency
  • Planibel 'A' Glass

    = High Thermal Efficiency
  • 28mm Double Glazing

    = incorporating Warm Edge Spacer Bars = Sound Insulation & Excellent Thermal insulation properties
  • 70mm Profile Thickness

    = Ease of Installation
  • Key Locking Handles

    = Security
  • Bay Windows:

    supplied with Load Bearing Poles. Jacking Points and Head Plates available for a small charge, if requested.
  • Bow Windows:

    = External Trims
  • 10 Year Guarantee

    (Please see our Terms and Conditions)
  • Windows and Doors Installation Instruction Windows and Doors Installation Instruction
Installation of Bay and Bow windows is a complicated procedure and should only be attempted by somebody with extensive knowledge of the practises required to install such an item.

* Dear Customer,

Due to the complexities of Bays and Bows, all submissions will be checked by our estimating department for correctness of details and costing.

uPVC Bay or Bow Windows from Dunster House

Here at Dunster House, we know that finding high-quality, affordable windows for your bow or bay window can be difficult. That’s why we’re proud to be able to offer you our range of uPVC bow windows and uPVC bay windows at a price you’ll love.

Designed and Manufactured by Us

We’re committed to great quality windows and doors, which is why we design, manufacture and sell them ourselves. We test all of our products to make sure that they are up to the industry standard. All our double glazed bow windows and double glazed bay windows are fully tested and certified for an energy rating, so you know that you’re getting quality with Dunster House.

So if you’re looking for double glazed windows, then you’re in the right place. At Dunster House, we offer quality that you can trust, because we’ve overseen your new windows from the start to the finish.

Get in Contact Today

We have a dedicated sales team, ready to help you whatever your query. Whether you want a quote or you have a question about Upvc bow windows, please don’t hesitate to get in contact. Give us a call on 01234 868628 or, if you’re nearby, visit us in our showroom at Bedford.

Reasons to buy
Dunster House
Windows and
Locking -

"Mushroom head"
bolts for security.
5 Chamber System -
Internal chambers make it
harder for warm air to
Low Level Gasket
seals -
Less visible
and look neater.
100% Virgin uPVC -
So will not discolour
over time.
Fully Welded -
Provides a more
attractive finish.