Rockwool Soffit Slab (Plain) is a rigid stone wool insulation board designed to deliver thermal efficiency, fire protection, and acoustic comfort in exposed soffit areas. Its plain construction is ideal for car parks, basements, and other ground-floor concrete soffits where a decorative or protective facing is not required. The plain slab can be painted or finished on-site if needed, while maintaining shape, density, and long-term insulation performance. Its semi-rigid design ensures a secure fit and easy handling during installation.

Benefits

Provides strong thermal insulation to help improve energy efficiency and reduce heat loss through exposed soffits
Euroclass A1 non-combustible stone wool offers top-level fire resistance for safer building design
Excellent sound absorption helps minimise noise transfer between service areas and occupied spaces
Factory-applied facings (where used) provide a clean, durable finish suitable for visible applications
Moisture-resistant and dimensionally stable, ensuring long-lasting performance even in challenging conditions
Maintains shape and integrity over its lifetime, resisting sagging or deterioration
Easy to handle and install thanks to its rigid construction and consistent slab dimensions
Manufactured from natural stone wool containing recycled content, supporting sustainable building practices

Good to Know

Ideal for insulating concrete soffits in car parks, basements, and other exposed ground-floor areas.
Available in multiple thicknesses to meet different thermal performance requirements
Slabs should be installed in tight formation, with clean edges for a uniform appearance
Easily cut using a utility knife; wear gloves and a dust mask when cutting in unventilated areas
Store under cover, off the ground, avoiding prolonged exposure to sunlight and rain
Specialist PPE is not required, though a dust mask is recommended if cutting in unventilated areas

Material Type