A clear guide to timelines, preparation, and what makes Cherwell’s process so efficient.
1. How Long Should It Really Take?
One of the first questions homeowners ask when planning new windows or doors is simple: how long will it take? It’s a fair question — after all, this is your home, and you want to know exactly what to expect. The good news is that with careful preparation and professional fitting, the process is usually much faster and smoother than most people imagine.
At Cherwell, we typically install four to six windows per day once the openings are ready. A small property or single-room replacement can often be completed within a day, while a full-home installation usually takes around two to three days, depending on size and access. Doors — particularly larger or bespoke designs — may take a little longer to align and finish, but even these are handled efficiently by our experienced installation teams.
It’s worth noting that the time spent on site is only part of the journey. Because every Cherwell product is bespoke and made to measure, lead times vary depending on the system, material, and manufacturer. Most custom aluminium, timber, or composite windows are ready within 8 to 12 weeks, though we work closely with several local partners who can deliver select systems in as little as 4 to 6 weeks. This flexibility allows us to tailor schedules to your project’s needs without compromising on quality.
The focus is never on rushing — it’s on doing things right. Every installation is carefully planned, coordinated, and communicated, ensuring your new windows and doors are fitted beautifully, with minimal disruption to your daily life. Over the next sections, we’ll break down what affects the timeline, what happens before and during fitting, and how Cherwell’s meticulous approach ensures a smooth, professional experience from start to finish.
2. Average Installation Timelines: The Quick Overview
Every home is unique, but most window and door projects follow a clear, predictable rhythm once the products are ready. At Cherwell, we focus on maintaining this consistency — balancing efficiency with craftsmanship. To give you a quick snapshot, here’s what typical installation timelines look like.
Average Installation Rates
- 4–6 windows per day is the usual pace for a Cherwell installation team.
- Single doors or French doors often take half a day, allowing time for precision alignment and finishing.
- Full-home installations are typically completed within 2–3 days, depending on the number of windows, property layout, and access.
- Large or complex projects — such as bay windows, shaped glazing, or bifold doors — may extend the schedule slightly to ensure every detail is finished perfectly.
| Project Type | Approximate Installation Duration | Notes |
|---|---|---|
| Small home (4–6 windows) | 1 day | Standard replacement project |
| Medium home (8–12 windows) | 2 days | Includes doors or complex openings |
| Large home (15+ windows) | 3+ days | May include bifolds, shaped glazing, or structural bays |
| Door-only installation | 0.5–1 day | Precision alignment and finishing included |
The Cherwell Difference
Because every product we fit is bespoke, timelines are planned around your specific design, material, and site conditions. Aluminium and composite frames, for example, require expert handling to ensure seals, fixings, and alignment perform exactly as designed — details that take time but ensure a flawless result.
While speed matters, we never compromise on care. Our goal is always to fit efficiently and respectfully — protecting your home, keeping things tidy, and ensuring you’re informed at every step. A professional installation should feel organised, not disruptive, and that’s exactly how we structure each project.
3. What Happens Before Installation
Before any fitting takes place, there’s an essential stage of preparation that sets the tone for everything that follows. At Cherwell, this pre-installation phase ensures precision, accuracy, and clear communication — the foundations of a smooth, efficient installation day.
Step 1: The Technical Survey
Once your quotation is approved, a member of our expert survey team visits your property to take exact measurements of every opening. This step usually takes between one and two hours, depending on the size of the project. During the visit, we also confirm details such as frame depth, opening direction, handle positions, and any specific design requirements. The goal is to ensure every product fits perfectly on arrival — no adjustments, no delays.
Step 2: Bespoke Manufacturing
Because Cherwell supplies made-to-order systems, manufacturing begins only after all specifications are confirmed. Lead times vary based on material, design complexity, and manufacturer location:
- Bespoke aluminium, timber, or composite systems: typically 8–12 weeks from order to delivery.
- Select local partner systems: available in 4–6 weeks, ideal for homeowners working to tighter schedules.
These are crafted products, not off-the-shelf items. Each frame is produced to your home’s exact measurements, ensuring flawless alignment, consistent finishes, and long-term performance.
Step 3: Scheduling and Coordination
Once your windows and doors are ready, our installations team contacts you to arrange fitting dates that work best for your home and schedule. We confirm delivery logistics, parking access, and any other practical details in advance. You’ll always know what’s happening and when — no surprises, no vague promises.
Step 4: Pre-Installation Preparation
Before the team arrives, we recommend clearing nearby furniture or window coverings, though our fitters will always protect your space with dust sheets and covers. Every part of the process is designed to be tidy, respectful, and efficient from the moment work begins.
This preparation phase is what enables the fitting itself to go so smoothly. By the time the installation team steps on site, every measurement, material, and schedule detail has already been checked and double-checked — the hallmark of a Cherwell installation.
4. Installation Day: What to Expect
When installation day arrives, our goal is simple — to make the process as smooth, clean, and stress-free as possible. At Cherwell, our fitting teams combine technical skill with respect for your home, ensuring every window or door is installed with precision and care.
Arrival and Preparation
Our installers arrive promptly at the agreed time, introduce themselves, and walk through the day’s plan with you. Before any work begins, they protect floors, furnishings, and surrounding areas with clean dust sheets and covers. Safety checks are carried out, and each room is prepared methodically to ensure minimal disturbance.
Removing the Old Units
Old windows or doors are carefully removed, one at a time, to maintain security and limit draughts or dust. Frames are taken out cleanly, and any debris is cleared immediately. The team then inspects the openings to confirm they’re ready for the new products — checking levels, reveals, and insulation points.
Fitting the New Frames
Next, your new bespoke frames are positioned, aligned, and securely fixed in place. Each one is checked for perfect plumb and level before being permanently secured. Depending on the system, glass units are installed either before or after frame fixing, followed by professional sealing and weatherproofing.
Because Cherwell’s products are made to measure, the fit is precise — there’s no forcing or adjusting on site. This accuracy reduces fitting time and ensures lasting performance from day one.
Finishing and Cleaning
Once the units are installed, we add internal trims, tidy any sealant lines, and ensure smooth operation of every hinge, handle, and lock. Glass and frames are cleaned before the area is vacuumed and left as it was found — often tidier than before.
Daily Review
Before leaving, the team reviews progress with you, explaining what’s been completed and what to expect next. For larger projects, this continues across multiple days until every unit meets our quality standards.
By the end of installation, your home will already feel transformed — brighter, quieter, more efficient — all achieved with minimal disruption. That’s the Cherwell standard: professionalism, precision, and respect for the homes we work in.
5. Factors That Can Affect the Timeline
Every installation follows a structured plan, but several practical factors can influence how long a project takes. At Cherwell, we plan for these variables well in advance — ensuring schedules remain reliable and that your installation is delivered on time, with no corners cut.
1. Project Size and Scope
The total number of windows and doors is the most obvious factor. A single replacement can be completed within half a day, while a full-home installation might span several. Larger or more complex properties often require phased fitting to maintain access and security throughout the process.
2. Material and System Type
Different materials and systems demand different installation methods:
- Aluminium and composite systems are precision-engineered and require careful alignment and sealing — slightly more time-consuming but far longer lasting.
- Timber systems may need additional adjustment to account for natural tolerances.
- Each product’s performance depends on this precision, so the extra attention to detail is always worthwhile.
3. Property Access and Layout
Homes with restricted access, upper floors, or large garden features can affect how efficiently materials are moved on site. Cherwell’s teams conduct a pre-installation check to plan around these constraints, often staging delivery or using specialised equipment to maintain safety and efficiency.
4. Weather Conditions
As with all exterior work, heavy rain or extreme temperatures can occasionally cause brief delays, particularly when sealing or bonding is involved. Cherwell monitors weather forecasts closely and adjusts schedules where needed to maintain both workmanship and product integrity.
5. Structural or Hidden Issues
Occasionally, removing old frames reveals underlying issues such as damaged lintels, rot, or insulation gaps. These are always handled transparently and repaired before fitting continues, ensuring long-term performance rather than quick fixes.
6. Bespoke Detailing
Special designs — including bay and bow windows, shaped glazing, or oversized sliding doors — can take longer due to their custom engineering. However, because Cherwell’s products are manufactured to exact measurements, fitting times remain controlled and predictable.
The important takeaway is that every factor is managed proactively. Our experienced project coordinators account for these details from the start, ensuring that even complex installations run smoothly — on time, and to the high standards Cherwell is known for.
6. After Installation: Finishing and Final Checks
Once your new windows and doors are in place, the final stage begins — ensuring every detail looks as good as it performs. At Cherwell, we treat finishing and quality checks as an essential part of the process, not an afterthought. This is where craftsmanship meets care.
Finishing Touches
After the main installation, our fitters complete the finer details that make all the difference:
- Neatly applying internal trims and colour-matched sealants for a polished look.
- Checking the alignment of sashes, doors, and handles to ensure smooth operation.
- Installing finishing beads, thresholds, and drainage details specific to each system.
Every join and seal is inspected for a clean, professional appearance — both inside and out.
Cleaning and Site Care
Before we leave, each window and door is cleaned and inspected. Glass surfaces are wiped down, frames are buffed, and protective coverings are removed. Our team vacuums the workspace and removes any dust or debris, leaving your home exactly as we found it — sometimes even better.
Disposal and Recycling
Cherwell responsibly disposes of old windows and doors through approved recycling partners wherever possible. Aluminium, glass, and PVC components are separated for reuse, helping to reduce environmental impact. We take pride in ensuring that our installations are as sustainable as they are stylish.
Operational Checks and Handover
Once the fitting area is spotless, your installer will:
- Demonstrate how each window and door operates.
- Review locking systems, ventilation features, and maintenance tips.
- Confirm that everything opens and closes smoothly.
- Address any final questions before sign-off.
This personal handover ensures confidence in your new installation and gives you direct contact with the team who completed the work.
Final Quality Inspection
Lastly, our internal quality assurance checklist is reviewed — verifying every fitting point, finish, and seal against Cherwell’s standards. Only when the installation meets those benchmarks is it officially completed.
The result: a home transformed not just by new windows and doors, but by the care and precision that went into fitting them. It’s this attention to the final details that defines the Cherwell experience — thoughtful, thorough, and beautifully finished.
7. Why Professional Installation Matters
When it comes to new windows and doors, the quality of the installation is every bit as important as the quality of the product. Even the finest frames and glazing can underperform if they aren’t fitted correctly. That’s why choosing a trusted, professional team like Cherwell makes such a difference — ensuring that every component works together exactly as intended.
Certified Expertise
All Cherwell installations are carried out by fully trained and certified professionals, accredited under recognised industry bodies such as FENSA and CERTASS. This guarantees compliance with the latest Building Regulations, thermal standards, and safety requirements. It also ensures your new products are installed to manufacturer specifications — protecting your warranty and long-term investment.
Precision and Performance
A professional installation isn’t about speed alone; it’s about precision. Frames must be perfectly aligned, seals continuous, and fixings positioned for both strength and insulation. Our installers use specialist tools and methods specific to aluminium, composite, or timber systems, ensuring that performance levels — from airtightness to acoustic control — match the product’s design intent.
Efficiency Through Experience
Because our fitters work exclusively with premium systems, their efficiency comes from familiarity, not haste. They know how to adapt to real-world conditions — uneven walls, tricky angles, hidden structural quirks — while maintaining a clean, consistent finish. That experience saves time and ensures every project runs smoothly.
Protecting Long-Term Value
Poorly fitted windows can lead to draughts, water ingress, and heat loss — issues that often appear months after installation. Cherwell’s meticulous approach prevents these problems before they occur. Proper sealing, drainage, and fixing guarantee decades of reliable performance with minimal maintenance.
A Reputation Built on Trust
Our clients often comment that Cherwell’s installation process feels different: professional, calm, and unobtrusive. It’s a reflection of our belief that craftsmanship isn’t just about what you see — it’s about the integrity behind it. Every installer represents that standard, taking pride in each fitting as if it were their own home.
Choosing professional installation means peace of mind, lasting quality, and a home that performs as beautifully as it looks. With Cherwell, you’re not just investing in windows and doors — you’re investing in precision that lasts for generations.
8. A Smooth Process, Built Around You
Replacing or upgrading your windows and doors is a significant investment — one that should feel rewarding, not stressful. At Cherwell, every project is carefully managed to ensure it runs smoothly from the moment you place your order to the day the final frame is polished and signed off. Our goal is simple: to deliver exceptional craftsmanship with minimal disruption to your home.
Thanks to precise planning and a well-coordinated installation process, most projects are completed in just a few days once the products are ready. On average, our fitting teams install four to six windows per day, with a full-home replacement typically taking around two to three days. Whether your system is aluminium, timber, or composite, every detail is fitted with accuracy, care, and respect for your living space.
Because each product is bespoke and made to measure, lead times vary slightly depending on material, design complexity, and supplier location. Most of our systems are manufactured within 8–12 weeks, though our local partner manufacturers can often deliver select ranges in as little as 4–6 weeks — offering both flexibility and speed where it’s needed most.
From survey to scheduling, from fitting to final handover, everything is designed around communication, consistency, and craftsmanship. You’ll always know what’s happening, when it’s happening, and who’s taking care of it.
At Cherwell, we believe that great design deserves great installation — one that honours both the product and the home it enhances.
Whether it’s a single statement door or an entire house transformation, you can trust our expert team to fit every detail beautifully.
