How to get rid of small cracks in the plaster facade with the minimum cost?
Need your advice on saving a plastered facade (it is very expensive to knock down the plaster and re-stucco – this is not an acceptable option).
Last year we plastered a brick house with Glims VeluR plaster (primer, spray, fiberglass mesh, plaster). In some places unevenness up to 6 cm (plastered in two layers). After drying (a month), the plaster had cracks in the form of cobwebs (pictured). Plaster does not "puddle" (only in a few places). A year later – the cracks have not developed. This year I planned to plaster decorative plaster, in some places on the facade is supposed to mount artificial stone.
There is a proposal to do "shell" on top of the plaster: ground, the main reinforcing layer (CT 29 with mesh), anchors (mushrooms), the second reinforcing layer (CT 29 with mesh).
Please give your opinion on this option or suggest other reasonable options.
Answers
Last year it was not necessary to install fiberglass mesh under the plaster, now it does not help, but interferes. Now it is better to make a primer facade penetrating primer type ST 17, dilute with water and spray until the plaster is completely saturated, first primer-water 1 to 4-5, then 1 to 2-3, at the end 1 to 1-2. After that, install on the glue ST 85 braids of facade glass fabric Tatneft-Valmira 2000, Vertex R131, Valmiera. Braids diagonal and internal, then do the basic reinforcing layer on all planes of your home, glue ST 85 tamped into the grid, the minimum overlap of 100-120mm. Then quartz primer CT 16, silicate-silicone decorative plaster. CT 29 is better not to apply, if plastering, take CT 24.
From my experience, I can say that cracks in the plaster should be "expanded" deeper and wider and
caulk/plaster them very carefully. In doing so, you need to tap on some of them to see if the plaster is peeling from the base (caving in). If flaking, remove to the base and plaster. Then general priming and so on.
