Introduction What Is Interlining?

Interlining is a hidden fabric layer sewn between the face fabric of a curtain or blind and its lining. Often described as the “padding” of a window treatment, it gives curtains a fuller, more luxurious drape and improves both thermal and acoustic performance.

In commercial settings such as care homes, hotels, and student accommodation, interlining isn’t just about style, when specified as fire retardant (FR), it becomes an important part of compliance with BS 5867 Part 2 and the Regulatory Reform (Fire Safety) Order 2005 (RRFSO).

Why Fire Retardant Interlining Matters

Soft furnishings are a recognised fire hazard. By choosing FR interlining, you’re adding an extra barrier of protection that slows ignition, reduces flame spread, and enhances the overall fire safety of the curtain or blind assembly. This is especially valuable in environments where evacuation may be slower, such as care homes or healthcare settings.

Benefits of Fire Retardant Interlining

1. Enhanced Fire Safety

Meets BS 5867 Part 2 standards when combined with compliant fabrics.

Provides an additional fire-retardant layer, reducing risk of ignition and flame spread.

Helps the Responsible Person demonstrate due diligence in fire safety assessments.

2. Thermal Insulation

Retains heat in winter and reduces heat gain in summer.

Improves energy efficiency, lowering heating and cooling costs.

Creates a more comfortable environment for residents and guests.

3. Acoustic Benefits

Thick interlining absorbs sound, reducing noise transfer from outside or between rooms.

Particularly useful in hotels, care homes, and student accommodation where peace and privacy matter.

4. Aesthetics and Luxury

Adds body and weight to curtains, giving them a premium, tailored look.

Helps blinds and curtains hang better with a smoother drape.

Ideal for creating a homely or high-end feel in shared and private spaces.

Applications in Commercial Interiors

Care Homes: Improves resident comfort with warmth and quiet, while keeping interiors compliant.

Hotels: Adds luxury to guest rooms and suites, while ensuring fire safety for operators.

Student Accommodation: Balances durability, insulation, and safety for high-use environments.

High-End Apartments / Build-to-Rent: Elevates interiors while delivering compliance and energy efficiency.

Maintenance & Compliance

Always check that both the interlining and the face fabric are certified to BS 5867 Part 2.

Keep documentation and certificates on file for inspections.

Follow manufacturer care instructions, incorrect cleaning can compromise FR performance.

Conclusion

Fire retardant interlining is more than just a luxury feature. It combines compliance, comfort, and style in one hidden but powerful fabric layer. Whether used in care homes, hotels, or other commercial settings, it enhances safety while also improving thermal and acoustic performance, making it a smart investment for both operators and residents.

By specifying FR interlining, you’re not only raising the design quality of your interiors but also demonstrating a proactive commitment to fire safety and regulatory compliance.