Fire resistant finish for upgrading 9mm-12½mm plasterboard and lath-and-plaster ceilings to one-hour protection
The Passive Fire Products EP/CP fire protection coating has been extensively used on lath & plaster ceilings, walls and cornices offering a 60-minute fire rating. This coating system offers an excellent solution to refurbishment projects where ceilings and walls cannot be replaced with new plasterboard products, allowing the original features to remain in Graded historical buildings
A white or coloured aqueous dispersion coating, offering protection to plasterboard and lath-and-plaster ceilings of various thicknesses. It develops a microporous intumescent layer with a smooth decorative finish. When attacked by fire, the intumescent material protects the coated area’s integrity and insulation for a period in excess of one hour. Envirograf® Product 42 (HW ACRYLIC acrylic emulsion coating) can be applied over the smooth coating.
This product underwent a fire resistance test in accordance with BS476 Parts 20, 22, and 23 (1987), applied to plaster-coated 9mm thick plasterboard and nailed to a timber-stud partition. The treated partition system achieved a fire resistance (insulation and integrity) of 71 minutes. The product also underwent a fire resistance test in accordance with BS476 Part 21 (1987), applied to 12½mm thick plasterboard beneath a loaded timber floor. The timber floor system achieved a fire resistance of 61 minutes (insulation, integrity, and load-bearing capacity). Also tested to BS476 Part 21 load-bearing lath-and-plaster ceiling for 60 minutes (insulation, integrity, and load-bearing capacity).
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