At Best of Lime, our Douglas Fir laths are sawn 'green', so have a raised grain texture that also acts as a key for the plaster. Similarly, if the laths are damaged in any way, they should be replaced prior to plastering. This includes being free from any greasy substances, dirt, or plant matter. How to prepare wooden lathsīefore you begin work on your laths, ensure that they are clean. Both metal and wooden laths serve a similar function. Conversely, the angular edges of metal laths mean that working with non-hydraulic lime plasters is more difficult. These date from around the late 19th century, and they have increased strength and rigidity in comparison to wood. From around the 18th century, lime plaster was used on brick, stone, or laths. Lath and plaster ultimately derives from an earlier technique, wattle and daub, which has been in use for at least 6,000 years. Once the plaster has oozed through the laths and adhered to the backside of the lath, this forms a 'key'. The wooden strips, or laths, have gaps between them that allow plaster to settle behind and bond more strongly to the lath itself. These are fixed onto the floor and ceiling. ![]() This studwork frame is usually comprised of panels. In their most basic form, laths (or lathes) are traditionally timber strips attached to a stud frame. ![]() However, many owners of period properties will encounter laths when renovating or restoring. Wooden laths: how should we use them, and should we even be using them at all? Laths were widely used until the mid 20th century, but they have now been largely replaced by modern solutions such as plasterboard.
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