What Is Crib 5 Fabric? A Guide for Interiors & Contract Use

For many interior and upholstery projects — especially in commercial, hospitality or multi-occupancy settings — the term crib 5 fabric comes up frequently. But what does it actually mean? Why is it required? And how can you be sure the fabric you choose truly meets those standards?

In this guide, we break down everything you need to know about crib 5 fabric: the fire tests behind it, when it’s required, advantages, limitations and how Evans can help you source compliant, high-performance fabrics for your projects.

Understanding Crib 5: The Fire Safety Standard

Crib 5” (also called Ignition Source 5) refers to a rigorous UK fire safety standard for upholstery fabrics. It’s based on BS 5852 testing, specifically section 4 (IS5), and is meant to ensure fabrics resist ignition, smouldering, or flame spread when exposed to certain ignition sources. 

To qualify as crib 5, a fabric must pass a three-stage test protocol:

1.    Smouldering cigarette test – A lit cigarette is placed in contact with the material. The fabric must resist smouldering or self-extinguish.

2.    Match test (flame ignition) – A lit match is applied for 20 seconds; the fabric must resist ignition or sustained flame.

3.    Crib 5 test – A wooden “crib” (five levels of timber) plus lint and fabric backing is ignited and observed for 10 minutes. The fabric must not sustain flaming or smouldering that leads through to the interior or backing.

If the fabric passes all three phases, it’s certified as crib 5—and is suitable for many contract and commercial settings.

When and Where Is Crib 5 Required?

Crib 5 is not just a “nice to have”—in many sectors, it’s a legal or insurance requirement. Some of the key applications include:

•    Hotels, hostels and guesthouses

•    Care homes and retirement communities

•    Hospitals and health care settings

•    Student halls and boarding schools

•    Pubs, bars and restaurants

•    Residential schemes where multiple dwellings share corridors or escape routes

In those environments, any upholstery—for sofas, chairs, cushions or soft seating—often must use crib 5-certified fabrics. 

It’s worth noting that curtains and drapery fabrics are generally assessed under BS 5867 Part 2 rather than crib 5; crib 5 applies mostly to upholstery fabrics and furniture coverings. 

In summary, if your project includes soft seating in a public or semi-public setting, crib 5 is often mandatory.

Key Benefits of Crib 5 Fabric

Choosing crib 5 fabric offers several important advantages:

•    Safety & compliance – It helps meet fire regulations and building codes.

•    Reduced risk in fire events – The fabric resists ignition and slows fire spread, giving more time for evacuation.

•    Insurance and liability protection – Non-compliant furnishings can invalidate insurance or incur penalties.

•    Wider project viability – Using crib 5 fabrics ensures your project can be used in more demanding commercial or public settings.

•    Durability – Many crib 5 fabrics are built for contract use, with strong wear, cleaning, and stain resistance.

Crib 5 vs Other Fire Safety Ratings

It’s useful to know how crib 5 relates to other fire safety standards:

Smouldering cigarette (BS EN 597-1) - Resist smouldering from cigarettes: Domestic upholstered furniture

Match test (BS EN 597-2) - Resist small flame ignition (match): Lower-level fire checks

Crib 5 / BS 5852 IS5  - Resist ignition from wood crib + flame: Contract upholstery, public seating

Crib 7 / BS 5852 IS7 - Tougher ignition test, heavier scenario: High-risk settings (prisons, offshore)

BS 5867 Part 2 - Fire safety standard for curtains, drapes, soft furnishings: Curtains and window treatments

Thus, crib 5 sits above basic tests and below extreme levels—appropriate for general contract use.

Choosing Crib 5 Fabric with Evans

At Evans, we offer a carefully curated range of crib 5-rated fabrics for your contract and commercial projects. When selecting a fabric, we help you consider:

1.    Certification & documentation – Make sure every fabric has a test certificate showing compliance.

2.    Wear & cleaning performance – For upholstery you’ll often want heavy-duty Martindale rub counts and stain resistance.

3.    Colour, texture & design – Ensure the fabric meets your design aesthetic while remaining treatable.

4.    Backing, lining & support – Use proper foam cores, interlinings or barriers where needed to maintain fire safety.

5.    Supplier support & traceability – Choose fabrics from suppliers who can back up claims and re-test if required.

We can provide samples, technical data sheets and fire test certificates to help you specify with confidence.

Care & Maintenance Tips for Crib 5 Fabrics

To ensure your crib 5 fabric continues performing:

•    Use manufacturer-approved cleaning methods (avoid harsh chemicals that deteriorate fire treatments)

•    Vacuum or clean regularly to remove particulates

•    Spot-treat stains using mild solutions

•    Avoid exposure to open flame or prolonged heat sources

•    Retain test certificates and track cleaning cycles (some warranties may require it)

If you’re working on an interior or upholstery project for hotels, care homes, student housing or any commercial venue, crib 5 fabric should be part of your specification toolkit. It combines legally robust fire safety performance with design flexibility and durability.

At Evans, we specialise in supplying and supporting crib 5-rated fabrics—complete with technical data and assured compliance—so you can specify with confidence and peace of mind.