Family run UK TImber Merchant since 1990
call 02476 304848      Mon - Fri, 7am - 5pm and Sat, 8am - 11:45am
inc vat ex vat
Family Business since 1990
Customer Advice from Experts
Fast Nationwide Delivery

Avon Timber Merchants is now closed for the festive holidays until our return on Friday, 2nd January 2026, reopening at 8:00 AM.

 

All orders placed on our website will be processed and delivered as soon as possible after our return in January 2026.

The quoting system remains available to use, however, it will not be monitored during the closure. Requests will be reviewed and processed promptly upon our return.

We would like to take this opportunity to wish all our customers a very Merry Christmas and a Happy New Year. Thank you for your continued support.

Warm regards,
The Website Administration Team

Avon Timber Merchants – Stock Take

Please note that we will be closed on Friday 29th May 2026.
We will be open as normal on Saturday 30th May 2026.

Warm regards,
The Website Administration Team

Bullnose Edge MDF Window Board Primed

from £6.55

White Primed Bullnose Edge MDF Windowboard (25mm Thick Finished Size)

More details >
MM

This value should be greater than or equal to 169 and lower than or equal to 294

MM

This value should be greater than or equal to 710 and lower than or equal to 3000

heart

WHITE PRIMED MDF WINDOW SILL

• DENSE MATERIAL: Created from high quality 25mm thick MOISTURE RESISTANT MDF, which is free from naturally forming defects.
• CUSTOM SIZE: This window board can be CUT TO YOUR SPECIFICATION and arrives BULLNOSED on one long edge.
• PROFESSIONAL FINISH: By using the dropdown box above, you can customise the ENDS of the window board to be either RETURNED (ROUNDED) for a PROFESSIONAL-LOOKING FINISH, or you can choose to KEEP THE ENDS SQUARE if that is your preference.
• READY TO INSTALL: Our MDF window boards arrive with a SMOOTH FINISH and a quality WHITE PRIMED COAT making them ready for installation.

 

Please note, due to the customised width, the back edge may be left with a sawn finish, or may arrive with a tongue or partial tongue.

NOTE: The above fields will only work for any window board size between 169-294mm wide and 710-3000mm long. If you require a window board that is under or over these size parameters, please make a request via email and we will provide a quote.

Click on an option below to learn more:

  • Opening Hours:
    Monday – Friday: 8 am – 5 pm ("Working Days")
    Saturday: 8 am – 11:45 am
  • Available for immediate collection:
    MDF Products and stocked items in the 'Merchant Products' category
    Note: If an item is out of stock, we will notify you of availability
  • Not available for collection:
    Doors
  • Lead times for non-stocked items:
    • Approx. 12 working days: Machined Skirting, Architrave, Door Lining Sets, Machined Windowboards (excluding MDF), External Cladding, Wide Planed Hardwood (Requiring joining), Non-stocked Saige brand products and Stair Parts, and Veneered Sheet Materials
    • Approx. 7 working days: Planed Hardwoods (Un-joined piece with Square Edges only) and any MDF Window board that requires bespoke resizing
  • Standard Delivery: Items up to 3 m are automatically calculated at checkout. For longer lengths, please request a quote via [email protected].
  • Delivery Days: Weekdays only (Monday–Friday, "Working Days").
  • Lead times:
    • Approx. 12–15 working days: Skirting, Architrave, Door Lining Sets, Windowboards (excluding MDF), External Cladding, Wide Planed Hardwood (Requiring joining), Stair Parts, Non-stocked Saige brand products, Veneered Sheet Materials
    • Approx. 3–5 working days: MDF Products, stocked items in 'Merchant Products' (including core treated/untreated timbers), Decking, Timber and Concrete Fencing products, Planed Redwood, Pine Cladding, Flooring, Mouldings, Sheet Materials (excluding Veneered), OSMO products
    • Approx. 7 working days: Planed Hardwood (Un-joined piece with Square Edges only) and any MDF Window board that requires bespoke resizing
  • Doors:
    • Shown as “In Stock” based on XL Joinery availability; stock levels are not live and may occasionally change
    • Not held in our yard – delivery only via XL Joinery
    • Typical delivery: 3–5 working days if in stock at XL Joinery
    • If urgent, contact us before ordering to confirm availability
  • For mixed orders, the longest lead time applies. Delivery times exclude weekends and Bank Holidays.
  • Special delivery requests: Quick or Saturday delivery via our courier partner can be requested by emailing [email protected]. If a quote was requested without specifying special delivery, standard lead times will apply.
  • For more information, please refer to our Delivery Policy Page.
Need free advice and help from our experts?
Our experienced staff are here to help. We can
give technical advice and tips for your project!

Call our Team on:
02476 304848

Request Callback
Email us on [email protected]