Schedule 3 Barrier Interliner – Woolguard Natural Woolmix FR Upholstery Lining, 137cm Wide

Woolguard Natural is a Schedule 3 barrier interliner, 137cm wide, for use under natural-fibre covers that haven't been FR treated. It's a wool and cellulose felt that is inherently flame retardant rather than chemically treated. It fits between the fillings and the top cover and passes BS5852 Ignition Source 5 (Crib 5), including after a water soak to BS5651.

When you need a Schedule 3 interliner

Under the Furniture and Furnishings (Fire) (Safety) Regulations 1988, a cover that doesn't pass the match test on its own can still be used on domestic upholstered furniture if a Schedule 3 interliner goes underneath it. This applies to covers containing at least 75% natural fibre, such as cotton, linen, wool or silk. With a cover like that, you can use this interliner instead of back-coating or FR-treating the fabric.

Why upholsterers choose Woolguard over FR calico

• Stretch: it's much more forgiving than FR calico and moulds easily around curves, arms and scrolls.
• Soft felt body: at roughly 3mm thick before compression, it acts like a thin skin wadding, softening and rounding off edges under the top cover.
• Quicker to fit: it can be laid over fillings without needing to be tacked or stapled everywhere.
• Traditional work: over hair or fibre stuffings, it stops the filling working its way through to the top cover.
• Outside backs and arms: laid over the hessian before the top fabric, it gives a fuller, softer finish.

Specification

• Type: Schedule 3 barrier interliner (wool felt)
• Composition: wool and cellulose fibre blend, inherently flame retardant
• Fire standard: BS5852 Ignition Source 5, after water soak to BS5651
• Weight: approx. 225gsm
• Thickness: approx. 3mm before compression
• Width: 137cm (54")
• Colour: Natural
• Full roll: 30m

How to use it

Cover the whole seat, back, arms and cushions so that every upholstered surface under the top fabric is fully enclosed. You still need compliant fillings, such as CMHR foam or FR fibre, underneath.

Buying options

• Per metre: cut to the length you order. Buy multiple metres for one continuous length.
• 2m, 3m, 4m and 5m lengths: the price per metre drops as the length goes up.
• 30m roll: a full roll at our best price per metre, for workshops and trade upholsterers.
• Sample: a small piece to check weight and handle before you order.

If you need larger quantities or a trade account, please get in touch.