Knapping
Knapped stonework was often used for important buildings constructed during Norman and Saxon periods. One example is the Norwich Guildhall, built in the 1400s. The east end (pictured above) illustrates an example of smooth, checquerboard (or diaper) flushwork of knapped flint and light limestone. The stones are square-knapped to such a degree that galetting was not required - neither was mortar. |
Knapping is a technique used to shape flint (or other stone with similar characteristics). The purpose of knapping is to split the stone and make it into flat squares or other distinct shapes for decorative purposes.
The residual flakes of stone that are created as a result of knapping are sometimes saved and used to fill spaces and protect any exposed mortar. This technique is known as galetting.
In the case of knapped flint, the technique highlights the smooth black surface of flint, which can be framed in limestone. This treatment is called flushwork. Flushwork is the decorative use of knapped flint in conjunction with dressed stone to form patterns.
[edit] Related articles on Designing Buildings
Featured articles and news
About the 5 Percent Club and its members
The 5% Club; a dynamic movement of employers committed to building and developing the workforce.
New Homes in New Ways at the Building Centre
Accelerating the supply of new homes with MMC.
Quality Planning for Micro and Small to Medium Sized Enterprises
A CIOB Academy Technical Information sheet.
A briefing on fall protection systems for designers
A legal requirement and an ethical must.
CIOB Ireland launches manifesto for 2024 General Election
A vision for a sustainable, high-quality built environment that benefits all members of society.
Local leaders gain new powers to support local high streets
High Street Rental Auctions to be introduced from December.
Infrastructure sector posts second gain for October
With a boost for housebuilder and commercial developer contract awards.
Sustainable construction design teams survey
Shaping the Future of Sustainable Design: Your Voice Matters.
COP29; impacts of construction and updates
Amid criticism, open letters and calls for reform.
The properties of conservation rooflights
Things to consider when choosing the right product.
Adapting to meet changing needs.
London Build: A festival of construction
Co-located with the London Build Fire & Security Expo.
Tasked with locating groups of 10,000 homes with opportunity.
Delivering radical reform in the UK energy market
What are the benefits, barriers and underlying principles.
Information Management Initiative IMI
Building sector-transforming capabilities in emerging technologies.
Recent study of UK households reveals chilling home truths
Poor insulation, EPC knowledge and lack of understanding as to what retrofit might offer.