Spray systems, Spray-Applied Acoustic Plasters

Lightweight Fireproof Spray

mcr Tecwool F

Fire protection inside buildings
mcr TECWOOL F mortar is designed for fire protection in environments corresponding to category Z2.
Acoustic plaster
The product can also be used as an acoustic plaster with sound-absorbing properties.

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Spray-applied fire protection system

The mcr Tecwool F spray-applied system is used for fireproofing: steel structural elements with open and closed profiles, reinforced concrete elements, reinforced concrete slabs, reinforced concrete slabs on trapezoidal sheets, beam-and-block slabs where the load-bearing elements are reinforced concrete, prestressed concrete, or steel beams filled with ceramic, concrete, or lightweight concrete blocks (solid or hollow)

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Application

Fire protection

Fire protection

mcr Tecwool F spray-applied system is used for the fire protection of steel structural elements (open and closed profiles), reinforced concrete elements, slabs, composite slabs on trapezoidal sheets, and beam-and-block slabs.

Characteristics

Belongs to the group of lightweight fireproof sprays, characterized by low density of the sprayed mortar.

Intended for general building structures where increased fire resistance of elements exposed to standard fires is required. Provides steel structural elements with a section factor U/A = 495 m⁻¹ with fire resistance classes from R30 to R240.

Excellent fireproofing combined with good thermal insulation – thermal conductivity λ = 0.061 W/mK. Due to its very good sound absorption properties, mcr Tecwool F can also be used as acoustic insulation in rooms requiring reverberation time correction (e.g., conference rooms, lecture halls, concert halls).

Not suitable for unprotected outdoor elements exposed to direct weather (rain, snow). mcr TECWOOL F mortar is designed for indoor use, in Z2 category environments.

Technical specification

DRY MIX – mcr TECWOOL F
Appearance	Grey dry mix, free from lumps and impurities
Apparent density (hardened mortar)	350 ± 10% kg/m³
Linear shrinkage	≤ 0.07 %
Adhesion to steel substrate	≥ 0.002 MPa or fracture within the coating
Adhesion to concrete substrate	≥ 0.002 MPa or fracture within the coating
Reaction to fire class	A1