Frequently Ask Questions
Do you know
Pointing old buildings
Using a cement based mortar for repointing Lime built buildings will in time cause spalding to the brick face (perished brick) and major damp issues ... If cement is used the wall cannot breath and the water content cannot permiate through the joints and the whole wall will become damp both inside and outside. We would use hot mix lime mortar. Most buildings built before 1930 are lime built.
What is Hot Lime
A hot-mixed lime mortar is one based on three components: quicklime, water and an aggregate such as sand. In a conventional mix, aggregate is mixed with lime which has previously been slaked. In this case, quicklime is mixed with the aggregate and then ‘slaked’ with water. The process generates heat, "Hot Lime". It may be used immediately as a hot mix or later when cool, if kept damp it is workable for a considerable time.
Lime Putty needs to cure and external applications will require several weeks of dry weather, with temperatures above 7 degrees. Rain will cause streaking, although it is possible to protect lime surfaces from rain or sunny conditions by hanging hessian sheets (Jute). Leaving a gap between the hessian and the lime surface will aid air circulation. In sunny or hot weather conditions, the hessian should be regularly sprayed with water.
Mastic Sand is mixed with Double Boiled Linseed Oil in measured quantities to form a pointing paste which it's used where door & window frames meet the brick/stonework. Different colours are available or red, buff, yellow, black and brown.
When you invest your time and money in the structure and fabric of your home or building please do it wisely. I could cost at lot more to put right if you choose the wrong contractor or use the wrong materials.
Cheap labour isn't skilled & skilled labour isn't cheap