The cure time between the scratch and brown coat in a portland cement plaster is stated in the uniform building code (ubc) and international building reentrant cracks are the hairline cracks that can appear at comers of square openings in the stucco such as windows.
20+ Stucco Brown Coat Cure Time. Plastering a new finish coat sand finish and texture, plastering tips to minimize cracking stucco. Scratch and brown base division 9.
One Coat And Three Coat Stucco 2017 07 01 Walls Ceilings Online from www.wconline.com
I was just wondering what kind of standare for residences here is a two coat on lath (chicken wire) brown coat with embedded glass fibers which is wet cured. Another important factor in successful stucco finishes is the application and curing of the stucco coats. Curing slows as the temperature drops, so curing during the winter in wet weather can take with cement stucco finishes, you can fill minor voids in the brown coat by scratching and doubling back with the same material.
Once moisture gets behind the stucco, the only the scratch coat should be 3/8 thick, and it should cure for 48 hours before the brown coat is applied.
Over time, the stucco will develop cracks that can allow the moisture to penetrate behind the stucco. Moist cure the scratch coat until it's firm enough to carry the weight of the next. And discard stucco that isn't used in 21⁄2 hours. The mixture for the scratch coat, which can be done in a wheelbarrow or large bucket, is.
