Description

The Dineen Vermiculite 100L Bag offers top-quality, fire-resistant insulation ideal for fireplace and stove installations. Sourced from Dineen Refractories – a trusted Irish manufacturer – this exfoliated vermiculite is widely used by professionals for filling behind firebacks, insulating flue systems, and mixing lightweight, fireproof renders.

Whether you’re working on a new build or restoring a traditional fireplace, this 100-litre bag provides excellent thermal performance while being easy to handle and apply.
—

✅ Key Features:

100% natural exfoliated vermiculite

Supplied by Dineen Refractories, Ireland’s leading fireproof material supplier

Perfect for filling behind cast iron firebacks

Mixes well with cement and sand (recommended 1:1:6 ratio)

Improves thermal efficiency and protects surrounding brickwork

Fire-resistant and lightweight

Ideal for open fires, stove surrounds, and chimney flue insulation

Large 100L bag suitable for most domestic applications

—

Common Uses:

Backfilling behind firebacks

Insulating around flue liners

Lightweight, fireproof cement mixes

Protecting masonry in fireplace chambers

—

Why Choose Dineen Vermiculite?

Dineen is an Irish name trusted in the construction and heating industry. Their vermiculite is rigorously processed to ensure consistency, fire resistance, and ease of use — making it the top choice for professional fireplace installers and homeowners alike.
—

Nationwide delivery available across Ireland.
Order online or visit our showroom for expert advice.