![]() ![]() While it doesnt get as cold as the Midwest or New England in the winter, it does get to 40s or below from time to time, and. There is no insulation between the siding and the lath & plaster walls at all. If doing a whole room and the carpet is not removed I will lay down poly sheets and then plywood over that. I bought an old house last year (built in 1922) that has wood siding and lath and plaster walls. Once the lath is mixed with the plaster chunks it makes it harder to shovel up and remove. Today, common stud depths are 150mm and 200mm. The depth of insulation used is typically the same as the depth of wall stud. After installing the insulation, the wall can be sealed with a vapour check to improve airtightness. ![]() it is nasty, dirty work! I like to remove the plaster as much as I can and clean it up from the floor before removing the lath. This is an important element to insulate as it can account for up to 30 of heat loss from a building. Wear good masks/respirators, vacuum things down well after words using a shop vac with a fine filter bag, wetting the materials down a little as you demo also keeps some from going air born and having some ventilation going as well.Īs for the actual work. In my opinion doing a job like this on a very non regular basis ( what I mean is you may do only this one job ever) should not cause you much harm, but you still need to take precautions. Drywall is inexpensive to hang and finish. Cost Though lath and plaster walls' materials are inexpensive, they are much more expensive to build because they require skilled labor. Many of those plasters used asbestos and it is bad to breath in to your lungs. Lath and plaster walls have a slightly better insulating R-value than do drywall wall systems. Some tips are that you should be wearing a good quality well fitting dust mask or even better would be a respirator when removing the plaster and lath. On homes with a vapour barrier placed under the drywall the walls are designed to breath to the exterior and to reduce the amount of warm moist air from inside the home from entering the walls. ![]() Lightly scratch this coat with a lath or scratch comb and leave to dry and cure until. Do not over trowel this coat as too much plaster may be lost through the lath. Apply scratch coat of Haired Lime Mortar through the lath (15 mm for material consumption), leaving around 1/3 (8 mm) on the surface. In colder climates frost will form in cavity spaces ,usually on the back side of the exterior sheathing and air flow helps dry this out when it melts and thaws. Example of Lath and Plaster Specification. Air flow is important when using batt insulation because it helps to keep the wall cavities dry. The only way you could stop it would be to entirely fill the cavity with foam. Insulating the walls with a batt type insulation will somewhat reduce the ease of air flow but it will not stop it. ![]()
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