A window survey is a free, no-obligation visit where a specialist measures your window openings, checks the structure around them, and confirms your chosen windows will comply with UK Building Regulations before anything is manufactured. It usually takes place after you accept a quote and typically lasts under an hour per window, depending on your property.
What Is a Window Survey?
A window survey is a professional visit to your home before any windows are made or fitted. A surveyor measures each opening precisely, checks the condition of the surrounding wall and frame, and records everything needed to manufacture windows that actually fit.
It’s different from the initial quote visit, where you discuss styles, colours and budget. The survey is the technical step that turns that conversation into exact specifications.
Quick takeaway: think of it as the difference between choosing a suit off the peg and being properly measured for one the survey is what makes sure your new windows fit first time.
Why Does a Window Survey Matter Before You Get New Windows?
Skipping a proper survey is how homeowners end up with windows that don’t sit flush, gaps that let in draughts, or fitting problems discovered mid-installation. Getting it right at the survey stage avoids all of that.
A survey also protects you in three specific ways:
- Accuracy: precise measurements mean your windows are made to fit your actual openings, not standard sizes
- Compliance: the surveyor checks your planned windows will meet current Building Regulations for thermal performance
- Early warning: problems like a cracked lintel or a damp reveal get spotted before work starts, not halfway through
Finding a structural issue during the survey means it can be planned for. Finding it during installation means delays and extra cost.
What Happens During the Survey Visit?
Most window surveys follow a similar pattern, whichever company carries them out:
- Measuring the opening: width and height are usually measured at three points across the opening, and the smallest reading is used with a small deduction for a proper fit
- Checking for square: the surveyor checks the diagonals of the opening, since older properties are rarely perfectly square
- Inspecting the structure: the frame, reveal, sill and surrounding brickwork are checked for damp, movement, or damage
- Confirming product suitability: the surveyor talks through which frame material and glazing option suits your property, whether that’s uPVC, aluminium, or a period-style sash
- Reviewing access and practicalities: parking, scaffolding needs, and anything that could affect installation day are noted
This should be a conversation, not a checklist ticked off in silence. A good surveyor explains what they’re finding as they go, not just at the end.
How Long Does a Window Survey Take?
Timings vary by property size and number of windows, but as a general guide, surveys are usually scheduled within about a week of accepting a quote, and the visit itself typically takes anywhere from thirty minutes to a couple of hours depending on how many windows are involved.
Larger properties, period homes, or unusual window shapes can take longer, simply because there’s more to check and measure accurately.
What Should You Prepare Before the Surveyor Arrives?
A few small things make the visit faster and more accurate:
- Clear access to each window, inside and out, including moving furniture or curtains if needed
- Make a note of any windows that already stick, let in draughts, or show signs of damp
- Have any relevant paperwork to hand for example, planning permission if you’re in a conservation area
- Be ready to talk through how you use each room, since that can affect the best window style or opening type
None of this is complicated. It’s really just making sure the surveyor can see and measure everything clearly.
What Happens After the Survey?
Once the survey’s done, the measurements and specification go off for manufacturing. You’ll usually be sent drawings or a written specification to check and approve before anything is made this is your chance to confirm colours, styles and opening configurations are correct.
Manufacturing lead times vary depending on the product, glazing choice, and how busy the workshop is, so it’s worth asking for a clear timeline at this stage rather than assuming a fixed number of weeks.
Is a Window Survey Free?
At Secure Trade Frames, yes our surveys are free and come with no obligation to go ahead. We’ll visit, measure up, and leave you with an accurate quote. If you want to proceed, you let us know. If not, there’s no pressure and no chasing.
That’s deliberate. We’re a family-run Leicester business, and we’d rather earn your business on the quality of the advice than push you into a decision on the day.
What If My Property Has Structural Issues?
It’s not unusual for a survey to reveal something that needs addressing before new windows go in a damp reveal, a deteriorating lintel, or an opening that’s moved out of square over time.
This isn’t a reason to worry. It’s exactly why the survey happens before manufacturing, not after. A good surveyor will explain what they’ve found, what it means for your installation, and what (if anything) needs sorting first.
Do I Need a Survey for Every Window Style?
Yes, whether you’re choosing casement windows, aluminium windows, or vertical sliding sash windows, every style still needs an accurate survey. Period-style and heritage properties often need extra attention here, since original openings are rarely uniform.
The same applies to composite doors and other glazed openings anywhere a made-to-measure product is going in, precise measurement comes first.
What Happens on Installation Day?
Installation day is a separate visit, usually weeks later once your windows have been manufactured to the survey specification. The team removes the old frames, fits the new ones, and seals and finishes around each opening.
Because the survey already resolved sizing and any structural concerns, installation day should run smoothly no surprises, no last-minute adjustments.
So, What’s the Quick Takeaway on Window Surveys?
- A window survey measures your openings precisely and checks the structure before manufacturing begins
- It’s how installers confirm your windows will meet current Building Regulations
- It’s your chance to catch structural issues early, when they’re easier and cheaper to resolve
- At Secure Trade Frames, surveys are free with no obligation to proceed
- Every window style from standard casement to period sash starts with the same careful survey process
Your home deserves more than just four walls; it deserves windows and doors built to last, crafted to perform, and installed by people who genuinely care. Secure Trade Frames brings Leicester’s finest A-rated uPVC windows, composite doors, and conservatories straight from their own factory floor to your doorstep, with the craftsmanship and personal service to match. Don’t settle for draughts, noise, or soaring energy bills any longer. Take the first step toward a warmer, safer, smarter home. Call 0116 261 1155. Find them at 7A Earls Way, Churchill Industrial Estate, Thurmaston, Leicester, LE4 8DL.
