Questions to Ask a Door Supplier Before You Order

t413-1

Before ordering an iron or aluminum door, ask how the supplier measures on site, which materials and finishes they use, and how the design is approved before production starts. Also confirm who installs the door and how the finish is protected against weather. Clear answers to these points prevent most fitting and quality problems.

How Do They Measure and Confirm Dimensions?

Ask whether the supplier visits the site to measure, or whether you need to send measurements yourself. Professional measurement matters because openings in older buildings are often not square, and a door made from rough numbers may not fit. A good supplier will check the opening at several points and note the direction of opening, the frame type and any obstacles like thresholds or tiles.

Is the on-site measurement included in the process?
Who confirms the final dimensions before production?

Which Materials and Profiles Will Be Used?

Iron and aluminum doors look similar in photos but behave differently over time. Ask what profile thickness is used, whether the steel is solid or hollow, and what type of aluminum is supplied. Ask about the glass or panel infill, since it affects weight, insulation and security. Request a written description that names each material, so you can compare quotes fairly.

How Is the Finish Protected?

Ask how the metal is protected against rust and weather. Hot-dip galvanizing followed by powder coating is a common approach for iron, while aluminum usually needs an anodized or powder-coated finish. Find out whether the supplier applies the coating in their own workshop, and which colors are standard. A finish that is clearly described is easier to maintain and to compare between suppliers.

What Does the Drawing and Approval Stage Include?

A reliable supplier provides a drawing and a written specification before production begins. Check that the drawing shows the door size, opening direction, hardware positions, glass or panel details and the color. Ask how many revisions are included and how changes are handled once you approve the design. Do not approve anything you have not read carefully.

Who Installs the Door and What Is Included?

Clarify whether installation is part of the offer or handled by a separate installer. Ask who is responsible for fixing the frame, sealing gaps, adjusting the hinges and locks, and cleaning up. If the door is installed into an existing wall, ask how the supplier protects the surrounding finish during work. Installation responsibilities should be written down so nothing falls between two parties.

What Support Is Available After Delivery?

Ask what happens if something needs adjustment after installation. Find out how the supplier handles service requests, who to contact and how long they usually take to respond. Ask about maintenance advice for the finish and hardware, so you know how to keep the door in good condition for years. Ask for these details in writing if they matter to your project.

Frequently asked questions

Should I ask for a written specification?

Yes, a written specification lists materials, dimensions, finish and hardware in one place. It makes it much easier to compare suppliers and to check the delivered door against what you agreed.

Is it better to measure the opening myself?

Measuring yourself can help, but a supplier who measures on site usually catches issues like out-of-square openings. Ask which method they prefer before you start.

Do iron and aluminum doors need different care?

Yes, iron usually needs protection against rust, while aluminum is more resistant to corrosion but still benefits from regular cleaning. Ask the supplier for specific care advice for your chosen material.

Should I approve the design before production?

Always. Approving a drawing before production is the main way to avoid mistakes in size, opening direction or finish, and it is the stage where changes are cheapest to make.

Common mistakes to avoid

Many buyers skip the questions about measurement and approval, then discover the door does not fit or looks different from what they expected. Relying on verbal agreements instead of a written drawing is the most common source of disputes.

Our recommendation

Ask for a written drawing and specification, confirm who measures and who installs, and check the finish details before you sign anything. A supplier who answers these questions clearly is usually one who will deliver a good result.

Summary

A few focused questions about measurement, materials, finish, approval and installation will help you choose a door supplier with confidence. Get every answer in writing before production starts.

השאירו פרטים ונחזור אליכם