BO Fenster · Biel/Bienne
Window replacement in Biel/Bienne
Replacing old windows, improving comfort or changing the openings in your home? Based in Biel/Bienne, BO Fenster helps you choose windows and plan their installation. Share your location, the condition of your windows and your priorities so we can prepare a suitable proposal.

Prepare your window replacement
01
Describe the existing windows
Note the number of windows, approximate dimensions and problems with draughts, noise, operation or maintenance. Interior and exterior photos help explain the existing connections.
02
Choose the specification
PVC, aluminium, timber or timber-aluminium: the building, dimensions and your priorities guide the choice. Compare glazing, opening types, handles and ventilation alongside the Uw value.
03
Clarify installation and finishes
The condition of the existing frame helps determine whether it can remain or needs complete removal. Check facade connections, sills, shutters and how much glazed area is retained.
04
Check the scope of the quotation
Clarify supply, final measurements, removal, disposal, installation and finishing work. Agree the schedule and arrangements for occupied rooms for your particular project.
What determines the cost of window replacement?
Cost depends on dimensions, material, glazing, accessories and installation work. Site access, the condition of the surrounding structure and finishing work also matter. Compare quotations for the same number of windows and scope of work. A profile-only price is not the cost of a completed installation.
Request a replacement quoteInstallation examples



Questions before replacing your windows
Do I need exact measurements to request a quote?
Approximate measurements help start the conversation; dimension fields in the form are optional. Final measurements and specifications must be confirmed before ordering.
Can the old frame remain?
This depends on its condition, fixing and connections. Retaining a frame can reduce some finishing work but may also reduce the glazed area. Assessing the existing installation allows this option to be compared with complete removal.
Should I choose double or triple glazing?
The choice depends on the building, orientation, permitted weight and comfort objectives. Discuss whole-window performance, daylight and solar gains with your adviser.
What about older or protected buildings?
Appearance, profiles, divisions and materials may be subject to specific requirements. View our heritage project and clarify your building’s constraints before selecting a system.
BO Fenster
