Replacing your windows is an important investment in your home, and it’s natural to want reassurance about how the process will work. Knowing what to expect before, during and after installation can make the experience far less stressful and help you feel confident in your decision.
At Isis Windows, we’ve been installing high-quality uPVC windows across Oxford and Oxfordshire since 1997. Our installations are carried out by our own experienced in-house fitters, ensuring consistent standards and a smooth, professional process from start to finish. This guide explains exactly what happens during a window installation with Isis Windows.
Initial enquiry and consultation
The process begins with an initial enquiry, usually by phone or through our website. One of our friendly team members will discuss your requirements and arrange a convenient time for a home visit.
During the consultation, we will:
- Discuss your reasons for replacing your windows
- Talk through style, colour and glazing options
- Answer any questions about energy efficiency and security
- Provide honest, practical advice based on your property
We focus on recommending solutions that genuinely suit your home, rather than pushing unnecessary upgrades.
Professional home survey and measurements
A detailed survey is essential to a successful installation. During this visit, our surveyor will take precise measurements of each window opening and assess the condition of the surrounding brickwork or structure.
The survey includes:
- Accurate measurements for made-to-measure windows
- Checks for potential installation challenges
- Confirmation of opening styles and finishes
- Discussion of any special requirements
This step helps ensure your new windows fit perfectly and perform as intended.
Clear quotation with no hidden surprises
Following the survey, we provide a clear, written quotation. This will outline the agreed window specifications, installation scope and total cost.
Our quotations are:
- Transparent and easy to understand
- Based on the agreed specification
- Free from hidden extras
We are always happy to explain any part of the quotation before you proceed.
Manufacturing your new windows
Once you choose to go ahead, your windows are manufactured to order. Because they are made specifically for your home, this stage typically takes several weeks.
During this time:
- Your window specifications are finalised
- Manufacturing is scheduled
- Installation dates are agreed in advance
We keep you informed so you know what to expect and when.
Preparing your home for installation day
Before installation begins, there are a few simple steps you can take to help everything run smoothly.
We recommend:
- Clearing window sills and nearby furniture
- Removing curtains or blinds
- Ensuring clear access to the windows being replaced
Our team will take care to protect your home, using dust sheets and working tidily throughout the installation.
Installation day: what happens on site
On installation day, our in-house fitters will arrive at the agreed time and introduce themselves before starting work.
The installation process typically includes:
- Careful removal of existing windows
- Preparation of the openings
- Fitting and securing the new windows
- Checking alignment, operation and sealing
We work efficiently while taking care to minimise disruption. Most window installations are completed within one to two days, depending on the number of windows involved.
Quality checks and finishing touches
Once the windows are installed, our fitters carry out thorough checks to ensure everything is working correctly.
These checks include:
- Smooth opening and closing
- Secure locking operation
- Proper sealing and weatherproofing
- Clean internal and external finishes
Any trims or sealants are applied neatly to leave a professional finish.
Aftercare, guarantees and support
After installation, we will explain how to operate and care for your new windows. You’ll also receive details of any guarantees provided with your installation.
Our aftercare includes:
- Guidance on cleaning and maintenance
- Ongoing support if you have questions
- A local team you can contact if issues arise
Because we are based in Oxford and have been trading since 1997, we’re here for the long term.
Why in-house fitters make a difference
One of the key reasons homeowners choose Isis Windows is our use of in-house fitters rather than subcontractors.
This means:
- Consistent workmanship standards
- Installers who know our products inside out
- Greater accountability and quality control
- A more reliable and professional experience
It’s a major factor in the trust we’ve built across Oxfordshire over many years.
Ready to book your window installation?
If you’re considering new windows and want a clear, straightforward installation experience, Isis Windows is here to help.
Contact our team today to arrange a free, no-obligation quotation and find out what to expect when you choose Isis Windows for your window installation in Oxfordshire.