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, chequerboard (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 - the decorative use of knapped flint in conjunction with dressed stone to form patterns.
See also: Building with Flint: a practical guide to the use of flint in design and architecture.
[edit] Related articles on Designing Buildings
Featured articles and news
ECA support for Gate Safe’s Safe School Gates Campaign.
Core construction skills explained
Preparing for a career in construction.
Retrofitting for resilience with the Leicester Resilience Hub
Community-serving facilities, enhanced as support and essential services for climate-related disruptions.
Some of the articles relating to water, here to browse. Any missing?
Recognisable Gothic characters, designed to dramatically spout water away from buildings.
A case study and a warning to would-be developers
Creating four dwellings... after half a century of doing this job, why, oh why, is it so difficult?
Reform of the fire engineering profession
Fire Engineers Advisory Panel: Authoritative Statement, reactions and next steps.
Restoration and renewal of the Palace of Westminster
A complex project of cultural significance from full decant to EMI, opportunities and a potential a way forward.
Apprenticeships and the responsibility we share
Perspectives from the CIOB President as National Apprentice Week comes to a close.
The first line of defence against rain, wind and snow.
Building Safety recap January, 2026
What we missed at the end of last year, and at the start of this...
National Apprenticeship Week 2026, 9-15 Feb
Shining a light on the positive impacts for businesses, their apprentices and the wider economy alike.
Applications and benefits of acoustic flooring
From commercial to retail.
From solid to sprung and ribbed to raised.
Strengthening industry collaboration in Hong Kong
Hong Kong Institute of Construction and The Chartered Institute of Building sign Memorandum of Understanding.
A detailed description from the experts at Cornish Lime.
IHBC planning for growth with corporate plan development
Grow with the Institute by volunteering and CP25 consultation.
Connecting ambition and action for designers and specifiers.
Electrical skills gap deepens as apprenticeship starts fall despite surging demand says ECA.
Built environment bodies deepen joint action on EDI
B.E.Inclusive initiative agree next phase of joint equity, diversity and inclusion (EDI) action plan.
Recognising culture as key to sustainable economic growth
Creative UK Provocation paper: Culture as Growth Infrastructure.