Professional bifold door installation
FENSA Certified Installation
Ask what requirements apply to your project.
- Aluminium, timber & heritage
- Made to measure
- Free estimates
Professional bifold door installation
Ask what requirements apply to your project.
Replacement external door projects can involve building regulations and associated documentation. The requirements depend on the scope of the work, so it is important to establish whether the project involves replacing existing doors or forms part of wider building or structural alterations.
The physical installation is equally important. Bifold frames need suitable openings and careful positioning, fixing, sealing and adjustment. Any FENSA certification applicable to a specific project should be confirmed as part of the agreed installation arrangements before work proceeds.
The prepared opening, door specification and fitting process all contribute to the finished result.
Replacing an existing external door can involve different requirements from creating a new structural opening.
Made-to-measure doors rely on correct dimensions and suitable opening preparation.
Correct positioning helps the complete multi-panel system operate as intended.
External levels, drainage and weather exposure need to be considered alongside the desired threshold.
Applicable certification and compliance arrangements should be confirmed for the individual project.
FENSA is the largest competent person scheme for replacement windows and doors in England and Wales. A registered installer can self-certify that replacement work meets the Building Regulations, and the homeowner receives a certificate once the work is notified.
Replacing an external door that is more than half glazed counts as controlled work, so the installer must either be registered with a scheme such as FENSA or the job needs approval from your council's building control team. Bifold doors fitted in a new opening or as part of an extension are normally signed off by building control as part of that wider project.
Keep your certificate with your property documents, as solicitors usually ask for it when you sell. You can check any installer's registration, or request a replacement certificate, on the FENSA website.
The nature of the project is established before installation arrangements are agreed.
Multi-panel doors depend on careful fitting and final adjustment.
Door installation requirements are kept distinct from separate structural or building work.
Guide prices by size and material, with extras and building work explained.
Read the cost guide →An honest comparison to help you choose the right door for your opening.
Compare the two →Tell us whether your project involves replacement doors or a new opening.
Free — no obligations
Identify whether the work involves replacement doors, a prepared new opening or wider renovation.
Relevant dimensions and installation conditions are established.
The door specification and applicable installation arrangements are agreed.
The doors are fitted and checked for alignment, movement, closure and locking.