Wattle and Daub is a composite building used for making walls

wattle and daub is made from clay,sand,fesise and straw

Wattle and daub construction techniques have been used for thousands of years and are still used in some regions today. The decline in popularity of wattle and daub huts began with the introduction of more modern building materials and construction methods, especially during the Industrial Revolution in the 18th and 19th centuries. However, wattle and daub construction can still be found in traditional and historical settings.

Yes, wattle and daub construction was popular in Celtic times. It involves weaving branches (wattle) together and then plastering them with a mixture of mud, clay, and straw (daub) to create walls for buildings. This method was commonly used due to its availability of materials and durability.

A wattle and daub house is a house made from wattle, woven twigs, and daub, a mixture made mostly of mud. The house is framed with timbers, the wattle is put in the open areas between the frames, and the daub is applied like plaster.

There is link below to a picture of a wattle and daub wall under repair, showing the structure.