![]() ![]() Lath and plaster was a skilled craft and a time-consuming techniqueĪnd the advent of cheaper, mass produced, pre-manufactured plasterboard meant Plaster because they were simply faster and less expensive to install. Insulation and helped to slow fire spread – new materials superseded lath and More easily allowed for ornamental or decorative shapes, provided sound Though there were advantages to the lath and plaster technique – it Why did they stop using lath and plaster? Cut through diagram of a lath and plaster ceiling showing the plaster ‘keys’ that lock the lime plaster firmly in position. ‘Haired lime’ also allowed greater flexibility in Traditionally, lime plaster was mixed with coarse animal hair suchĪs horse or goat hair to reinforce the plasterwork, thereby helping to prevent Sets – these ‘curls’ of plaster are known as keys and they play a vital mechanical role in securing the plaster Squeezed through and behind the laths locking the plaster to the wall as it The measured spacing is critical and allows plaster to be pushed or Each horizontalĬourse of lath is spaced about 3⁄8 inch (9.5 mm) away from its Wood lath is typically about one inch (2.5 cm) wide by four feet Hardwoods are commonly used such as oak, chestnut and larch. Greater strength and durability due to the split along the natural grain of the Laths can be sawn or riven (split) with the latter providing The technique derives from a more basic historical building method called wattle and daub that’s been used for at least 6000 years. Laths or ‘lathes’ are narrow strips of timber nailed horizontally across the timber stud frame or ceiling joists and then coated in plaster to finish the wall surface. Studwork is comprised of ‘plates’ that are fixed on theįloor (bottom plate) and ceiling (top plate), ‘studs’ are the vertical supportsīetween the two plates, and ‘noggins’ are horizontal pieces of timber nailed Non-loadbearing walls were constructed using a timber stud frame or ‘studwork’. Loadbearing walls were constructed of solid brick or stone and internal and Onto hard surfaces, such as brick and stone walls or plaster onto laths, strips In period homes with the plasterwork generally attached in two ways – plaster Lime plaster was traditionally used to finish wall surfaces Was superseded by modern gypsum plaster and plasterboard. Interior walls and ceilings from the 1700s to the early-to-mid 1900s before it The lath and plaster technique was generally used to finish But what is this building method? Why is it no longer in widespread use? And should we worry about preserving it as a heritage feature? Or is it simply out with the old and in with the new? Out with the old and in with the new? Should we keep lath and plaster or replace with modern plasterboard?ĭo you live in a period house? Perhaps it’s Edwardian era, Victorian or Georgian? If you do, you’ll likely have come across lath and plaster construction. ![]()
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