Iron Door Inspection Checklist: What to Check Before You Sign

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Before signing a contract for an iron door, confirm the exact measurements, the steel thickness and frame construction, the lock and hinge specification, and the finish and installation scope. Check that the written quote and drawing match what was agreed on site, because most problems come from details left out of the paperwork.

Confirm the Measurements on Site

The door should be measured on site by the manufacturer, not estimated from a photo. Check the clear opening width and height, the wall thickness, and whether the floor is level or sloped at the threshold. Ask whether the measurements include the frame, the overlap onto the wall and any tiles or finishes that will be added later.

Measure at the top, middle and bottom of the opening
Note the swing direction and which side the hinges will be on
Confirm the drawing shows the same dimensions as the site visit

Check the Steel Thickness and Construction

Ask for the exact sheet thickness of the door leaf and frame, and whether the panel is solid, reinforced or filled. A thin sheet can dent easily and sag over time, while a properly reinforced leaf keeps its shape. Look for the stiffening frame inside the leaf and ask how the corners are joined and welded.

Also confirm whether the door is designed for an entrance or a balcony, since exposure to weather affects the material choice and coating needed.

Review Locks, Hinges and Hardware

Hardware decides how secure and comfortable the door will be every day. Make sure the quote names the lock type, the number of locking points, the hinge type and the handle or lever brand line. Check whether a peephole, door closer, weather seal or threshold is included or listed as an extra.

Locking points and cylinder type
Number and load rating of hinges
Included accessories versus optional extras

Look at the Finish and Coating

The finish determines how the door will look and last. Ask whether the steel is hot-dip galvanized before painting or only primed, and what powder coating or paint system is used. Request the color code in writing, including the sheen level, so there is no argument later about the shade.

For exterior doors, ask how the cut edges and welds are treated, since untreated spots are where rust usually starts.

Clarify the Installation Scope

A door is only as good as its installation. Confirm who does the fitting, whether the frame is anchored into the wall properly, and how the gap around the frame is filled and sealed. Ask whether the installation includes removing the old door, making good plaster or stone, and cleaning up the site.

Check that the quote states clearly whether installation is included or billed separately.

Read the Written Quote and Drawing Carefully

Before signing, compare the written specification with the drawing and what you discussed. The quote should list the dimensions, materials, thicknesses, hardware, finish, colour, installation and the steps of the process: inquiry, on-site measurement, drawing, your approval, production and installation. If something is not written down, ask for it to be added before you sign.

Keep a copy of the approved drawing, as it is your reference for the final result.

Frequently asked questions

Should I measure the door opening myself before ordering?

You can take rough measurements yourself, but the manufacturer should measure on site before production. Small differences in the wall or floor can change the final size significantly.

What is the most important thing to check on an iron door quote?

Confirm the steel thickness, frame construction and finish specification, because these affect strength and lifespan. Make sure they are written clearly in the quote.

Is installation usually included in the price?

It depends on the quote, so check the written scope. Confirm whether removal of the old door, wall finishing and cleanup are included or charged separately.

Can I ask for changes to the drawing after I approve it?

It is best to request any changes before approval, since changes after production starts can affect timing and the final product. Ask your manufacturer how changes are handled.

Common mistakes to avoid

Signing a quote that describes the door only in general terms, or relying on a verbal promise for the finish, lock or installation. Always get these details in writing and matched to the approved drawing.

Our recommendation

Ask for a drawing with every dimension, the steel thickness, hardware list, finish code and installation scope in one document, and read it side by side with your quote before you sign.

Summary

A good pre-purchase check confirms measurements, steel construction, hardware, finish and installation scope in writing. Matching the quote to the approved drawing protects you from surprises.

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