New-Build Snagging Advice

Common Window Snags in a New-Build Home

By Andrew Kerrigan, RPSA Tech · 29 October 2026

Windows are used every day, so even a small defect can quickly become frustrating. In a new-build home, a snag might be a scratched pane, a stiff handle, a window that does not close smoothly or an unfinished seal around the frame.

Checking the windows carefully before you report a problem helps you describe what you have found and where it is. Here are some common points to look at.

1. Check that each window opens and closes smoothly

Carefully operate each accessible window using its normal handle or mechanism. Notice if it sticks, catches, feels unusually stiff or needs excessive force. Check that it closes into position and that the handle moves as expected.

Do not force a window that appears jammed. Record the room and window location, describe what happens, and take a short video if it helps show the issue.

2. Look for damage to glass and frames

In good light, look over the glass for visible scratches, chips or marks. Check the frame and sill for dents, scuffs, cracks, damaged corners or unfinished surfaces. A close photograph can help show the position and size of a mark.

3. Check the handles, hinges and locks

Handles should be secure and operate without feeling loose or damaged. Where a lock is fitted, check that it engages and releases using the normal controls. Look for visible gaps, loose parts or signs that the window is not sitting squarely in its frame.

4. Inspect the sealant and finish around the window

Look at the visible junctions around the frame, sill and internal reveal. Note obvious gaps, missing sections, uneven sealant, damaged plaster or unfinished decoration. These observations do not identify the cause by themselves, but they give the builder a clear starting point for checking the detail.

5. Notice draughts, water or condensation

If you notice a draught, water staining or water entering around a window, record when it happens and the weather conditions. Persistent condensation can have several possible causes, so note where and when it appears rather than assuming the window is necessarily at fault.

What should you do if you find a window snag?

Take a clear photo and make a note of what you observed. Report the issue to your builder through its usual defect-reporting process, keeping a copy of your message and any response. If a window is difficult to operate or will not secure properly, raise it promptly.

A snagging survey checks the visible and accessible parts of the property on the inspection date. It can help identify and record observable issues, but it does not involve dismantling windows or testing concealed parts of the installation.

Independent new-build snagging surveys

Andrew Kerrigan, RPSA Tech, has more than 30 years of construction experience and carries out independent snagging inspections across the Wirral, Liverpool, Chester and surrounding areas. The inspection findings are recorded in a clear photographic report that you can refer to when raising issues with your builder.

Frequently asked questions

Should I report a window that is stiff to open?

Yes. Record which window is affected and what happens when you operate it. Avoid forcing it if it appears stuck or will not close properly.

Can a snagging survey check new-build windows?

A snagging inspection can check visible and accessible window components and finishes, including operation using the normal controls. It does not involve dismantling the window or testing concealed parts.

What details should I give the builder?

Include the room, which window is affected, what you observed, when it happens and clear photographs or video if useful. Keep a copy of the report you submit.

This article is general information. A snagging inspection is a visual assessment of accessible areas on the inspection date and does not guarantee that concealed defects or future problems will be identified.

Find out more about NW Snag Surveys