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ROCKWOOL® FIREPRO® Intumescent Putty Pads

ROCKWOOL® FIREPRO® Intumescent Putty Pads

ROCKWOOL Ltd Third party certifications:
  • QA Certificate

    QA Certificate

    Certificate type

Intumescent putty pads for fire stopping socket boxes.

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+44 (0)1656 862621 https://www.rockwool.com/uk/


ROCKWOOL Intumescent Putty Pads provide fire resistance for pre-existing socket boxes and openings in plasterboard walls. They can provide acoustic insulation to reduce noise transfer through the construction.


Intumescent Putty Pads are manufactured from a red non-setting, flexible silicone-based intumescent polymer. They will not harden, crack or dry out with age. The intumescent properties activate as temperatures reach 200°C, restricting the passage of fire and smoke. ROCKWOOL Internal Socket Intumescent Putty Pads have been developed for use in plasterboard partitions that have been partially penetrated by electrical socket boxes. They are designed to maintain acoustic integrity and fire resistance. Internal Socket Intumescent Putty Pads make a significant contribution to the reduction of air leakage in properties.

Features and benefits:

  • Available for single and double sockets.
  • Up to two hours fire resistance.
  • Reduces noise transfer.
  • Pre-cut for simple installation.
  • Maintenance-free.

Acoustic performance:

  • Intumescent Putty Pads (Internal socket) offer a weighted sound reduction index of up to 67 dB. Tests were conducted by BRE Acoustics who hold UKAS accreditation for the measurement of sound insulation in the field and the laboratory. The measurements were conducted using the procedures accredited by UKAS.

General information





Uniclass 2015

Pr_30_31_68_42 Intumescent puttiesPrimary


P12/350 Intumescent putty

Specification data - Intumescent putties Enhanced data


Silicone based intumescent polymer putty.


Preformed pads.


Applying joint sealants.

Fire performance

To BS 476–20:1987 & EN 1366-3, up to two hours fire resistance.

Acoustic performance

Up to 67 dB.

Application temperature


Third party certifications

  • IFC: Certificate No IFCC 1050

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