January 28, 20251 yr comment_46920 Does anyone know if a fire door is ok to be in a lath and plaster wall and what protection does it give please? Report
January 29, 20251 yr comment_46942 A notional fire resistance for a standard lath and plaster wall is typically considered to be around 30 minutes; however, this can vary depending on the thickness of the plaster layer, the type of lath used, and the overall construction quality, meaning it's important to consult professional advice for specific situations. To improve the fire resistance of an existing lath and plaster wall, specialized intumescent paints/papers can be applied, which expand when exposed to heat, creating a protective barrier. (e.g. https://envirograf.com/product/105-fire-resistant-coating-for-lath-and-plaster/) If the FRA determines a notional only fire resistance of 30 minutes is OK, then the wall would be suitable and a fire door in it would be viable. The FRA would also determine if an older notional fire door would suffice or whether it would need to be an upgraded notional door or a current spec certified FD30/FD30S door. Report
January 29, 20251 yr Author comment_46947 Many thanks for that Anthony , very useful information. Report
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