The laths may have a stabilising effect on the exterior section of the walls in order to aid the spreading effect, but correctly built the timber wall should not have to rely on laths for this. Lath and plaster is mainly there to separate spaces to offer privacy or insulating exterior of buildings from adverse weather conditions.Ī stud wall, and this can take many forms and variations in a timber building, is consructed to support any weight above ( if required) and/or to stop any lateral movement of a building ( if required).Ī central stud in a supporting wall with two opposite diagonals, or four arranged as an " X ", does the job perfectly well as per your photo. Lath and plaster has nothing in common and plays no major part in " structural support" in any building, it will act as an aid to bind and stabilise a wall by default. Oh, and at last the roof is done and the scaffolding down - Happy Day! - see blog After mulling this over whilst going to sleep, finally it dawned on me: I reckon this structure is holding the external wall in place, unless someone has a different idea? There is no corresponding wall in the kitchen beneath on the right of the picture is a major internal structural wall, about 18 inches thick, largely of squared limestone, and on the left is the external wall which is about a foot thick, in limestone rubble. This is a major piece of structure and not just a simple stud wall, although at first its purpose puzzled me. The laths are in really good condition and even the nails are still shiny, not rusted. At the top of the central stud is a metal bolt, pointing downwards, which has a square head about 1.5 inches across. Each X is about 6 feet wide and 8 feet high. Those two X frames which you can see are both made from oak beams, 4 inches by 3 inches. Our two back bedrooms are separated by a lath and plaster wall, which needed to be re-plastered as the lime plaster was all crazed and had come away from the laths - huge areas moved alarmingly, and some had been patched with modern alternatives. Don't ever assume, just because something is covered with lath and plaster, that it is not load-bearing (viz Kirsty on Location Location). There are several ways in which to repair lath and plaster - using modern or traditional techniques, or by learning how to patch plaster.I'm sure this is not unusual, but I think it is worth publishing the picture. If, on the other hand, large chunks of your wall or ceiling are coming away, more significant repair work will be necessary. Simply check them regularly and keep an eye on any new cracks that appear - often simply skimming over them with a suitable, lime-based, plaster mix is sufficient. Of course, if your walls are still in good condition, there is no need to touch them. If you live in a house with lath and plaster walls (likely if your house was built before 1940) then you might be wondering how to repair damaged lath and plaster. How do you Repair Lath and Plaster Walls? These mixtures usually used a 1:1:6 combination of gypsum or cement, lime putty and sharp sand for the initial two coats, then equal parts of lime putty and gypsum for the final layer. Later on, it became common to add in gypsum or sometimes cement - this was to speed up the setting process between each layer. The third layer was commonly made up of lime putty and a fine sand in a 3:1 mixture - or sometimes just lime putty. The first two layers of plaster that were applied to the lath were usually made up of lime putty and sharp sand in a 1:3 ratio - often with animal hair added in to help bind them. (Image credit: Getty) What Type of Plaster Was Used For Lath and Plaster? Lath and plaster walls were commonplace in house right up until the advent of plasterboard in the 1930s.
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