On our current Repointing project in Stratford upon Avon we are using a ionic old white 3.5. This has a slight off white colour to it which is perfect for Repointing as it just takes the fresh white edge off the mortar when dried. We find a lot of client are not keen on the fresh white colour that you get with new line mortar. This make this old white NHl our number 1 choice. We are also using coal dust and pfa to achieve the mortar colour our client wants.
All materials supplied by Cornish lime company