Wattle & Daub: Craft, Conservation & Wiltshire Case Study
Contents 2 History
3 Craft
3.3 Panel Types
3.4 Staves
3.6 Daub
3.7 Decoration
4.1 Soils
4.1.1 Constituents
4.1.2 Plasticity
4.1.3 Strength
4.1.4 Field Testing
4.1.5 Selection
4.2 Dung
4.2.2 Lignin
4.2.3 Urine
4.2.4 Microbial Debris
4.2.5 The Role of Dung
4.3 Fibre
5.2.3 Maintenance
5.3 Repair
5.3.1 Partial Renewal
5.4 Replacement
5.4.1 Brick Infill
5.4.2 Renewal
6.3 Fieldwork
6.5 Evaluation
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4.1 SoilsThe physical characteristics of a daub are primarily
dictated by its main constituent – the earth. It is therefore important to
understand this material and its basic properties. The soil properties that are
key to the performance of daubs are:
These properties may be measured on-site (in the field) or in a laboratory and can be used to understand the historic selection and mixing of soils or in the specification and selection of materials for new daub. [50]
Unlike solid earth construction, the key characteristics of the clay in a daub
panel can be described by two dimensions. Since the orientation, i.e. height and
width, of effects such as cracking are of little relevance, the properties can
be described most simply through a linear shrinkage characteristic.
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