What is a shelter coat?
Discover the vital role of shelter coats in preserving our heritage. Learn how this traditional technique can help to protect old buildings from the elements, ensuring their longevity for generations to come.
Understanding the shelter coat
A shelter coat is essentially a slightly thicker limewash, enhanced with fine aggregate. Its primary purpose is to fill any minor imperfections or cracks, predominantly found on previously limestone substrates.
This traditional application creates a durable layer that is moisture vapour permeable, so allowing the important passage of moisture, and quite crucial for the ongoing conservation of historic buildings.
Why shelter coats are essential for old buildings
The importance of a shelter coat lies in its preventative capabilities. It acts as a shield against unnecessary water ingress, which can lead to significant damage through the natural freeze-thaw process predominantly found in colder/winter months.
By preventing unwated levels of water from penetrating the substrate, shelter coats help to avoid the deterioration and failure of valuable historical masonry.
Protecting against the elements
This method is chiefly used as a preventative measure, designed to protect and preserve the integrity of limestone structures, which can still be larer rendered over, pointed Those learning about limeworks will find this technique invaluable for understanding how to safeguard period and listed buildings from the harsh realities of weather. By limiting moisture absorption, shelter coats play a key role in the long-term preservation of our architectural heritage.