What We Look For (And What We Don’t): Doors & Windows — How Small Details Reveal Bigger Problems

Doors and windows can seem like minor details—until they don’t open, close, or seal the way they should. That’s why I always give them a close look. They're not just access points—they're also clues. Especially when they don’t line up, stick, slam, or fog over.

And let’s be honest: if you’ve got kids, I’m probably going to find a few dents on the backs of your bedroom doors. That’s not a judgment—it’s part of life. But it can also be a hint that something’s been banged around more than expected.

What I Check on Every Door and Window

• Interior and exterior doors – I open and close all accessible doors. I check latch alignment, gaps, and how they swing.
• Windows – I open and lock every operable window I can safely reach. I check for stuck sashes, fogging, cracked panes, and broken hardware.
• Weatherstripping and seals – Drafts, light gaps, or missing trim get noted.
• Visible damage – Especially on the backsides of doors, window sills, and areas exposed to heavy use or moisture.

What I’m Looking For—And What I’m Not

• ✅ I’m looking for: alignment issues, sticking, non-functional locks, fogged double-pane windows, and signs of water intrusion or improper installation.
• ❌ I’m not looking to: evaluate energy ratings, measure air infiltration rates, or test every single lock or storm window in the house.

Why Doors and Windows Tell Me More Than You Think

When a door suddenly won’t latch or swings shut on its own, it’s not just annoying—it might be the first sign of foundation movement. Same with windows that suddenly stick in one room but not others. It’s a pattern I’m always watching for. One bad fit? Maybe poor installation. Multiple doors on one side of the house all acting up? That’s structural movement, and it gets flagged.

Thermal Imaging Can Reveal More

Once I’ve tested function, I use a thermal camera to scan around windows and doors. That’s how I catch cold air leaks, hidden moisture, or missing insulation. Especially in older homes, a clean thermal image doesn’t just look cool—it tells me those windows are still doing their job.

FAQs: Doors and Windows During a Home Inspection

Do you test every door and window?

All accessible ones, yes. I open and close them, test locks, and check operation. If something is blocked or locked by the homeowner, I document it as not inspected.

What does a fogged window mean?

Fogged double-pane windows have failed seals. That means lost insulation value and potential moisture between panes. I recommend replacement when needed.

Why do my doors stick in summer?

Seasonal humidity causes materials to swell. But if multiple doors start sticking or misaligning, especially in one area, I check for signs of movement in the structure.

Can you tell if my windows are energy efficient?

I can’t verify energy ratings, but I do look at overall condition, function, and thermal leakage. Fogging, drafts, or poor operation are noted in the report.

→ Next up: Post 25: Inspecting Garage Safety — More Than Just a Door Test

← Previously: Post 23: Interior Rooms — Signs of Damage You May Be Overlooking

Curious what it’s like to schedule your own home inspection with us?