A potentially catastrophic blaze, which consumed the garage containing a parked vehicle adjoining a £1M house in rural Surrey, was stopped in its tracks thanks to the use of 12mm A1 non-combustible Magply being chosen as the render substrate board on the contract. The property was constructed using a Structurally Insulated Panel system construction (SIP) with A1 non-combustible Magply being used on the exterior of the building as the substrate panel for the proprietary render system.
Magply is a multi-use A1 non-combustible board with an impressive library of testing for fire applications, in the offsite and timber frame sector the board is designed and specified to contain fire.
Although the emergency services were quick to attend the fire, which happened in August, it had taken sufficient hold that the large timber framed garage was totally destroyed. However, the gable end to the house which features a relatively thin, weatherproof finish of the silica-based K-Rend suffered only surface damage.
Remarkably, although areas of the render had spalled off, the 12mm Magply boards underneath had not even charred while they had fully protected the SIPs structure beneath: a fact borne out by the system supplier, Glosford SIPs, which took core samples to confirm the continued integrity of the insulated sandwich panels which are faced by OSB.
The Contracts Manager for Fullers Plastering, James Corlett, commented: “The fire-resistant qualities of the Magply boards saved the day. We had utilised Magply as a render-backer on a number of projects before being awarded the contract to apply K-Rend to the half dozen homes here and have always been very pleased with the performance. It is an easy board to cut and fix, while we can now definitely confirm to clients that it fully complies with the fire requirements for domestic and commercial buildings.”
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