Planning to replace your windows? Before choosing an installer, it is worth understanding exactly what you are paying for. A double glazing quote should do more than provide a final price. It should explain the products, installation work, specifications and guarantees included in your project. Experienced window installers in Stevenage should be happy to walk you through every line.
If you are comparing double glazing quotes in Stevenage, look beyond the headline price to make an informed decision and avoid unexpected costs later.
What details should a double glazing quote include?
Window specifications and materials
Your quote should clearly identify the type of windows you have selected. This includes the frame material, style, colour, glazing specification and opening mechanism.
For example, uPVC and aluminium windows look and perform differently. You may also choose between casement, sash and tilt-and-turn designs depending on your property and preferences.
Check that the quote reflects your actual requirements, not a standard product that differs from the windows you discussed with the installer.
Number of windows and measurements
The document should list the number of windows being supplied and installed, along with their sizes or relevant specifications. Made-to-measure windows require accurate measurements to achieve a proper fit.
If you are replacing windows throughout your home, check that every opening is included. This is particularly important when comparing quotes from different companies, as one estimate may cover more work than another.
Installation and additional work
Does the quoted price cover installation, or are some labour costs listed separately?
A detailed quote should explain the installation work included, such as removing existing windows, fitting the new units, sealing the frames and clearing away installation waste. Ask whether any repairs to surrounding plasterwork, internal finishes or external areas are included, as these may be charged separately.
Clarifying these details before work begins helps you understand the full project cost.
How can you compare double glazing quotes fairly?
Check the total price and possible extra charges
The quote should clearly state the total cost and explain any additional charges that could apply. Ask whether the price includes delivery, installation, disposal of old windows and any agreed finishing work.
If an installer recommends optional upgrades, request separate prices so you can decide whether they suit your budget.
The cheapest quote is not automatically the best value. Compare product quality, installation standards, customer support, and the terms each company offers for windows in Stevenage.
Look for guarantees and energy efficiency information
Your quote should explain the applicable product and installation guarantees, including what they cover and any exclusions.
It is also worth checking the energy performance of the proposed glazing. Window Energy Ratings and the glazing specification help you understand how the selected windows are expected to perform.
Check Building Regulations compliance
Replacement windows in England must meet Building Regulations. Most installers register the work through a competent person scheme such as FENSA or CERTASS, and you should receive a certificate once the installation is complete. Ask which scheme the installer uses, as you will need the certificate when you sell your home.
Look at deposits and payment terms
Check how much deposit is required and when the balance is due. Ask whether your deposit and guarantee are protected by insurance, so you are covered if the company stops trading. If you sign a contract in your own home, you normally have a 14-day cancellation period under consumer law, and the quote or contract should explain how this works.
Common mistakes when comparing quotes
The most common mistakes are comparing quotes that cover different numbers of windows or different specifications, assuming disposal and making good are included when they are not, and signing on the day under pressure from a limited-time discount. A reputable installer should be willing to answer your questions and explain the available options without rushing your decision.
Get the right quote from Walkern Windows and Homes
Walkern Windows and Homes has more than 25 years of experience supplying and installing double glazing across Stevenage and Hertfordshire. As a family-run company, we offer bespoke windows, doors, and conservatories, backed by a 10-year guarantee. Our online QuoteBuilder lets you explore designs and specifications to suit your home, and you can request a free, no-obligation quote and talk through your requirements with our team before deciding. If you are comparing double glazing quotes in Stevenage, get in touch and we will make sure you know exactly what is included.