So here are my best top tips for using Reclaimed bricks
Buying reclaimed clay bricks? - use lime mortar
Repointing clay bricks? - rake out all the concrete pointing and replace with lime mortar
If your render is blown over clay bricks - use lime render
Laying reclaimed clay bricks and it is sucking the wet out of the lime mortar - soak them first, not wet them, soak them.
When sourcing bricks for an extension match to colour not size, hide the coursing mis-match in an expansion joint, use a down pipe or a plant to conceal your joint and the extension will disappear.
Use wet hessian sheets to cover your days work in the summer to stop the mortar drying out too quickly
Don't be too keen and go fast and up - lime mortar needs time to cure, it will be unstable if you go too quickly.
Below 5 degrees? Go home, forget it - you can’t use lime mortar unless it is 5 degrees and rising. If you do - it will blow.
Caught out by chilly overnight temps? - Use multiple hessian sheets to make a microclimate to protect it from blowing.
About to chuck it down? - Use the hessian sheets again. Otherwise the lime will bleed down the face and make a white bloom over your hard work.
Looking at a white bloom? - buy a brick cleaner or save your money and mix white vinegar with water (1 part vinegar to 20 parts water) and scrub the bricks, not the pointing!
Only buy small batches of lime mortar - it lasts 1 day - Yup what you don't use you discard. Knocking yesterday's back up and using it is a waste of time and money - it will blow. Your lime mortar supplier knows about this and will help you with quant’s.