Aluminum Door Installation Requirements: What to Confirm

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Before ordering an aluminum door, confirm that the opening is measured accurately, the wall and floor are ready for fixing, and the frame can be anchored securely and levelled. Also confirm access for delivery and who handles the finishing work around the frame. Checking these points early avoids delays and rework on installation day.

Confirm the Opening Measurements

The most important step is an accurate measurement of the rough opening, taken on site and not from old drawings. Measure the width at the top, middle and bottom, and the height at both sides, because walls are rarely perfectly straight. Note whether the floor is level and whether any tiles or screed will be added later, since that changes the final height.

Our team measures on site before production so the door is made to the real opening, not an estimate.

Check the Wall and Structural Condition

The wall around the opening should be solid, plumb and free of cracks or loose plaster where the frame will be anchored. Anchors need firm material to hold, so confirm the type of wall and any reinforcement before work starts.

Look for cracks or crumbling mortar around the opening.
Confirm the lintel above the opening is sound.
Note any pipes or cables running through the area.

Plan the Frame Fixing Method

The frame is fixed with anchors into the wall, and the fixing method depends on the material around the opening. Discuss the anchor type and spacing with your installer before production, because a door can only be as stable as its fixings. Gaps between the frame and the wall are normally sealed after fixing, so confirm who will do this and what finish is expected.

Confirm the Threshold and Floor Level

The threshold must match the floor finish, whether tile, stone or screed. If tiling is still to be done, plan the door height so the finished floor sits correctly against the sill. Ask whether the door should be set before or after floor finishing, as the order affects the final fit and any gap underneath.

A level opening makes operation smoother and reduces wear on hinges and locks over time.

Check Delivery and Site Access

Confirm that the door can be carried to the opening without damage. Measure the stairwell, corridor and lift dimensions, and check any tight corners the door must pass. Large or heavy units may need extra people or equipment, so arrange this in advance.

Route from the entrance to the opening.
Lift or stair dimensions.
Parking or unloading arrangement on the day.

Agree on Responsibilities Before the Installation Day

Write down who is responsible for each step: wall repairs, floor finishing, electrical or lock wiring, sealing and cleaning up. When these responsibilities are clear before the installation, the work runs smoothly and disputes are avoided. Ask for a written specification that lists the door dimensions, finish and fixing details, and get your approval on it before production starts.

Frequently asked questions

Do I need to measure the opening myself?

You can take rough measurements to start, but an on-site measurement by the manufacturer is the safest way to ensure accurate sizing. This avoids errors caused by uneven walls or floors.

Should the floor be finished before the door is installed?

It depends on the design of the threshold and the type of floor. Ask your installer which order works best so the door sits correctly against the finished floor.

What if the wall around the opening is damaged?

Repair cracks or loose material before installation, because the frame needs solid fixing points. Confirm with your installer what condition the wall must be in.

Who seals the gap between the frame and the wall?

This should be agreed in advance, as it may be done by the installer or by the builder or finisher. Confirm the responsibility and the sealing finish before the installation day.

Common mistakes to avoid

The most common mistake is measuring once from old drawings and ordering before the wall and floor are finished. Always confirm the real opening on site and agree the floor finish order before production.

Our recommendation

Measure the opening at several points, confirm the floor finish and the wall condition, and agree in writing who handles sealing and finishing. Doing this before production prevents most installation problems.

Summary

Confirm accurate opening measurements, wall condition, fixing method, threshold height, delivery access and responsibilities before ordering an aluminum door.

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