FD30 vs FD60 Fire Doors

What do FD30 and FD60 mean?

FD30 and FD60 are common fire door rating terms.

In plain English, FD30 is commonly used to describe a fire door with 30-minute fire-resistance performance, while FD60 is commonly used to describe 60-minute performance.

The rating is not just about the door leaf. It depends on the tested or assessed door system, including the frame, seals, hardware, glazing and installation.

A rating should be supported by suitable product evidence and should match the requirement for the door location.

Key takeaway: FD30 and FD60 are performance terms, not decorative labels.

What does the “S” mean in FD30S or FD60S?

You may see ratings such as FD30S or FD60S.

The “S” is commonly used to indicate smoke control performance as well as fire resistance.

Smoke control can be important because smoke can spread through gaps and escape routes. Whether smoke control is required should come from the specification, building design, fire strategy, fire risk assessment or competent advice.

Key takeaway: FD30S or FD60S usually indicates smoke control, but the requirement should still be specified properly.

Which rating do I need?

Do not guess the required rating.

The correct rating may depend on the building type, door location, compartmentation, escape route, floor level, fire strategy, Building Regulations, Approved Document B, fire risk assessment, product evidence or other project-specific requirements.

In some cases, an existing specification, fire strategy, door schedule, building-control requirement or fire risk assessment will state the required performance. If it does not, seek competent advice before asking for quotes.

Key takeaway: The required rating should come from evidence and specification, not assumption.

FD30 vs FD60: the practical difference

At a high level, FD60 represents a higher fire-resistance performance than FD30.

That may affect the door leaf, core, thickness, frame, seals, glazing, ironmongery, weight, cost and installation requirements.

The practical difference is not simply that one door is “better”. The correct door is the one that matches the required performance for that location and is installed as an evidenced system.

Key takeaway: FD60 is not automatically the right answer everywhere; the correct rating depends on the requirement.

The complete-system issue

A fire door rating is only meaningful when the whole installed system supports it.

The door leaf, frame, seals, hinges, closer, latch or lock, glazing, threshold, ironmongery and surrounding construction can all affect performance.

Replacing only the door leaf while retaining an unsuitable frame or incompatible components may not deliver the intended performance.

Key takeaway: A fire-resistance rating belongs to the evidenced system, not the sticker alone.

Product evidence and certification

Fire door products should be supported by suitable evidence, such as test evidence, assessment information, certification or manufacturer documentation.

Buyers should ask what evidence supports the door’s claimed performance and what components are permitted or required.

Contractors should not substitute components without checking compatibility and evidence.

Key takeaway: A claimed rating should be supported by evidence.

Does FD60 cost more than FD30?

FD60 may cost more than FD30 in some situations because the product, components, frame, hardware, weight, labour and documentation requirements may differ.

However, cost should not decide the rating. The required performance should be specified first, then the quote should respond to that requirement.

If a contractor suggests changing the rating to reduce cost, ask for the technical basis and competent confirmation.

Key takeaway: Choose the required performance first; then compare prices.

FD30 and FD60 in flat entrance doors

Flat entrance doors opening onto common parts may be part of the building’s fire-safety arrangements.

The required rating for a flat entrance door should not be guessed. It may depend on the building design, fire strategy, fire risk assessment, age of building, previous approvals and current project requirements.

Where flat entrance doors are being replaced or remediated, the specification should also consider smoke control, self-closing devices, letterplates, viewers, locks, frames, resident access and documentation.

Key takeaway: Flat entrance door ratings should be specified for the actual building and door location.

FD30 and FD60 in communal fire doors

Communal fire doors may protect corridors, lobbies, stairwells, risers, service rooms, bin stores or escape routes.

The required rating may differ depending on the location and purpose of the door.

Do not assume that all communal fire doors in a building have the same rating.

Key takeaway: Door location and function affect the required performance.

Inspection, defects and ratings

A door may be labelled or believed to be FD30 or FD60 but still have defects that affect performance.

Common issues include poor closing, damaged frames, missing seals, altered locks, unsuitable glazing, incompatible hardware, excessive visible gaps, poor repairs and missing documentation.

Inspection should consider whether the door and its components still appear consistent with the required performance and whether competent advice is needed.

Key takeaway: A rating does not remove the need for inspection and maintenance.

Can an FD30 or FD60 door be repaired?

Sometimes, but the answer depends on the defect, evidence, components, manufacturer instructions and competent assessment.

Some defects may be capable of remediation with compatible components and suitable methods.

Other defects may require replacement or further investigation, especially where evidence is missing or the required performance cannot be established.

Key takeaway: Repair decisions should be evidenced, not guessed.

Questions to ask before buying FD30 or FD60 doors

Before ordering FD30 or FD60 fire doors, ask what requirement the rating is intended to meet.

A good quote should explain whether the door is a doorset, door kit, door assembly or supply-only product.

It should also explain what evidence supports the rating, what components are included and what documentation will be provided.

Key takeaway: The best fire door quote explains the rating, the evidence and the installed system.