Tradiblanc repointing

IN an old property (c.1850) when the mortar starts falling off the roof ridge caps, it is best to find a specialist firm to reset them with traditional material. A cowboy builder will use regular cement. A specialist product used by professionals on historic buildings' projects is Tradiblanc, sold as a misture of a small quantity of white cement, lime, a plasticiser and an air energisrer. IT is mixed 1:2 to sand and water to the required consistency, and then applied.