Spring Unit Insulator

Product Description

• white compressed polyester fibre
• 400 gm/sq m
• 69 cm wide
• 1/2 metre pieces

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Key Features

Spring Unit Insulator: Springs for upholstery and soft furnishing projects.

Product Details

Frequently Asked Questions

What is Spring Unit Insulator used for?

Spring Unit Insulator is used in the suspension system of upholstered seating to provide bounce, support, and comfort. Coil springs are used in traditional upholstery; tension springs in modern suspension systems.

What height and gauge of coil spring do I need?

Spring height is selected based on the depth of the seat frame — typically 15-23cm (6-9 inch) springs for seat cushions. Gauge (wire thickness) determines firmness — 9 SWG is standard for seats; heavier gauges for firmer applications. The specification is in the product title.

What is the difference between coil springs and tension springs?

Coil (barrel) springs are used in traditional and high-end upholstery, tied in a grid pattern over webbing for deep, bouncy support. Tension (sinuous/no-sag) springs are used in modern furniture, running front-to-back in a serpentine shape for a firmer, lower-profile seat.

How are upholstery coil springs tied?

Traditional coil springs are tied using laid cord in a figure-8 knot pattern, connecting each spring to its neighbours and the frame. Springs are lashed in both directions (front-to-back and side-to-side) to prevent tilting.

Why choose Upholstery Warehouse for springs and suspension?

Upholstery Warehouse stocks a comprehensive range of upholstery springs and suspension components used by professional upholsterers across the UK, at trade prices with fast despatch.