MPA Mortar promotes the use of factory-produced mortars and traditional building methods and to discuss matters of technical ... interest. Factory-produced mortars are batched under factory-controlled conditions and ensure: Accurate cement content Consistent strength and colour Reduced mixing and labour costs Reduced wastages Compliance with building specifications. MPA Mortar producer members include: Breedon Southern Ltd, CPI Mortars, John Carr (Liverpool), CEMEX UK, Cornish Lime Company, Eco-readymix, Hugh King & Co, Marshall Premier Mortars, Mortar & Screed Company Ltd, RTU, Remix Dry Mortars, RTU Ltd, Tarmac Building Products Ltd, Watts Group. MPA Mortar is part of the Mineral Products Association (MPA), the trade association for the aggregates, asphalt, cement, concrete, lime, mortar and silica sand industries. read more