A composite door takes 2–4 hours to fit, but total project time is often longer
If you are searching for “how long to fit composite”, the answer splits into two distinct parts: the physical installation time and the total project lead time. The physical fitting of a pre-hung composite door unit by a competent professional typically takes between 2 and 4 hours on site. However, the overall project from placing the order to a finished installation usually spans 3 to 6 weeks.
2–4 hours to physically fit a composite door, but total project time is 3–6 weeks including survey and manufacturing. This applies to standard like-for-like replacements without structural changes.
- Physical fitting takes 2–4 hours for like-for-like replacement.
- Total project lead time is 3–6 weeks from order to finish.
- Survey and ordering stage lasts 1–2 weeks.
- Manufacturing takes 2–4 weeks as doors are made to order.
- Structural alterations or side panels increase fitting time.
- A composite door takes 2–4 hours to fit, but total project time is often longer
- The manufacturer-to-fit timeline breaks down into three clear stages
- Quick numbers typical composite door replacement timeline
- The direct answer a composite door takes 2–4 hours to physically fit, plus 3–6 weeks for ordering and manufacturing
- What affects fitting time frame type, wall condition, and door size
- How to verify your composite door fitter is certified and insured
- The cost of fitting a composite door in 2026
The 2–4 hour figure applies to a like-for-like replacement where the existing door frame is removed and a new pre-hung frame is installed in the same opening. This timeframe is based on industry fitter guides published by the Door & Hardware Federation and FENSA (Fenestration Self-Assessment Scheme) installation standards (FENSA, 2026). If the opening needs structural alteration or the door includes side panels, the fitting time will increase.
The manufacturer-to-fit timeline breaks down into three clear stages
The total timeline from order to completion falls into three predictable stages. Understanding these stages helps you plan around the 3–6 week lead time rather than the 2–4 hour fitting window.
Stage 1: Survey and ordering – This takes 1 to 2 weeks. A surveyor visits your home to take accurate measurements of the opening and discuss door style, colour, glazing, and hardware options. Lead times here depend on the manufacturer’s scheduling and your location. Major UK composite door brands such as Solidor and Rockdoor typically quote 1–2 weeks for this stage (Solidor, 2026).
Stage 2: Manufacturing – Composite doors are made to order, not held in stock. Production takes 2 to 4 weeks depending on the complexity of the design, the number of glazed panels, and the manufacturer’s current workload. Standard single-door orders tend toward the lower end; orders with sidelights, fanlights, or non-standard colours sit at the upper end.
Stage 3: On-site installation – On the day of fitting, the actual work takes 2 to 4 hours. This includes removing the old door and frame, preparing the opening, fitting the new pre-hung unit, adjusting the hinges and locking mechanism, and sealing the perimeter.
Quick numbers typical composite door replacement timeline
| Stage | Time duration | Notes |
|---|---|---|
| Survey and order | 1–2 weeks | Includes site measure and door selection |
| Manufacturing | 2–4 weeks | Made-to-order; not stock |
| On-site fitting | 2–4 hours | Pre-hung unit; existing frame removed |
| Total lead time | 3–6 weeks | From order to finished installation |
These timelines reflect industry standard lead times published by the Glass and Glazing Federation (GGF) for made-to-order composite doors (Glass and Glazing Federation, 2026).
The direct answer a composite door takes 2–4 hours to physically fit, plus 3–6 weeks for ordering and manufacturing
For the keyword query “how long to fit composite”, the core answer is 2–4 hours on site. This is the figure most searches expect. However, the complete project from placing your order to walking through your new door typically takes 3 to 6 weeks.
The 2–4 hour figure assumes three conditions: the door is a pre-hung unit (frame and door assembled together), the existing frame is removed, and a competent professional fitter carries out the work. These conditions are standard for most composite door replacements. FENSA installation guidance and manufacturer product data sheets confirm this as the typical fitting window for a like-for-like replacement (GOV.UK, 2026).
What affects fitting time frame type, wall condition, and door size
While 2–4 hours is the standard, several variables can extend that time. The most significant factor is whether the installation is a like-for-like replacement or requires structural changes.
Like-for-like replacement – Installing a new door in the same opening with no alteration to the brickwork or timber frame is the fastest scenario, taking 2 to 3 hours. This is the most common composite door replacement.
Enlarging or reducing the opening – If the new door is larger or smaller than the existing opening, the fitter must cut or build up brickwork, timber, or masonry. This adds 1 to 3 hours depending on the material and the extent of the change.
Non-standard door sizes and additional elements – Composite doors with side panels (sidelights) or fanlights above the door add 30 to 60 minutes per extra element. Non-standard widths or heights may also require additional adjustment time for the frame. FENSA technical guidance on door installation times covers these variations (FENSA, 2026).
How to verify your composite door fitter is certified and insured
Hiring a certified fitter protects your investment and ensures compliance with Building Regulations. You should check two main credentials before booking.
FENSA or CERTASS registration – Fitters registered with FENSA or CERTASS can self-certify their work as compliant with Part L (energy efficiency) and Part Q (security) of the Building Regulations. After installation, the fitter must provide a FENSA certificate. This certificate is required if you later sell your home, as it proves the door meets legal standards. You can check a fitter’s registration on the FENSA register (GOV.UK, 2026).
Public liability insurance and structural warranty – If the installation involves enlarging the opening or any structural alteration, confirm the fitter has public liability insurance (typically £2 million minimum cover). For significant structural changes, a structural warranty from the installer or a third-party provider may be required. guide to building regulations for replacement doors
The cost of fitting a composite door in 2026
In 2026, the average cost for supply and fit of a standard composite door ranges from £1,200 to £1,800, according to industry consumer price data from Checkatrade and Which? (Checkatrade, 2026). This includes the door unit, frame, hinges, lock, letter plate, and professional fitting.
If you supply the door yourself, the fitting-only cost is typically £200 to £400. Additional costs include removing and disposing of the old door, which adds £50 to £100 if required. These figures assume a straightforward like-for-like replacement in a standard-sized opening. Non-standard sizes, additional glazing, or structural alterations will increase both the supply and fitting costs. composite door costs and budgets
Frequently Asked Questions
2–4 hours for a standard like-for-like replacement by a competent professional, according to FENSA installation standards (2026). Total project time is 3–6 weeks including survey and manufacturing.
Yes, but it is not recommended unless you have experience. The Door & Hardware Federation advises professional fitting to ensure security and warranty validity. DIY fitting may void the manufacturer's guarantee.
A composite door typically lasts 30–35 years with minimal maintenance, according to the Energy Saving Trust. This is longer than uPVC doors which average 20 years.
Yes, a composite door can add up to 10% to your property value, according to GOV.UK energy efficiency guidance. It improves security, insulation and kerb appeal.
Fitting a composite door costs £150–£350 for labour, plus £500–£1,500 for the door itself. Total cost averages £650–£1,850 according to Checkatrade data (2026).
