![]() Texturing grade silica sand may be added for a texture finish. It consists of specially ground, calcined gypsum, requiring only the addition of water. That may be sufficient if the areas are few and far between. Gold Bond X-KALibur Extended Set Veneer Plaster is a mill-mixed veneer finish plaster for smooth trowel applications where an extended setting time is desirable. Since veneer plaster systems first appeared in the 1950s, their formulations have been steadily refined. So, with sufficient manpower, a one-coat application can be completed, from bare studs to decoration, in only 48 to 72 hours. ![]() Die trimming becomes a worry-free procedure due to the ultra-fine gypsum base, which prevents nicks and abrasions caused by brittleness. Under proper drying conditions, the setting time of veneer plaster materials is generally between 45 and 90 minutes. If the weak areas are just a few and not too large, there are specialized plaster washers that are used to screw the weakened section to the lath to prevent further damage. EXCALIBUR EXCALIBUR Type IV High Strength Die Stone With its smooth mixing characteristics and ample setting time, Excalibur produces a textbook model every time. In that case, you may need a more significant redo. After mixing with water a chemical reaction begins that is unreversable, this is a result of half of the water heated away during the manufacturing. Common veneer plaster is calcined gypsum (CaSo4 1/2 H2o) w/ sand and perhaps a retarder. If, however, significant sections of the plaster are bulging outward, or if there is a large amount of the surface coat pulling away from the base coat (a sign that the plaster is in poor condition overall), this is not a good basis for a top coat beyond paint or paper. Just dilute slightly to allow for flow and roll on the wall. It consists of specially ground, calcined gypsum, requiring only the addition of clean water. ![]() While drywall is more flexible and less prone to pulling away from the framing, sound plaster should be strong enough to hold the weight of a thin veneer. Gold Bond X-KALibur Extended Set Veneer Plaster is a mill-mixed veneer finish plaster for smooth trowel applications where an extended setting time is desirable. If the plaster is generally sound, you should have no problem. When this happens in a specific area, that section of plaster is basically unsupported and is prone to cracking and buckling inward. This is a strong structure unless a substantial amount of the keys have been broken (from temperature or humidity swings, structural shifting, physical damage). When real plaster is applied over wood lath, the base coat oozes through the gaps in the lath and sags or expands a bit forming "keys" that, when dry, hold the plaster layer to the lath. ![]()
0 Comments
Leave a Reply. |