USG IMPERIAL Finish Plasters - Manual

D IAMOND and I MPERIAL Brand Finish Plasters both offer a variety of advantages when used alone or in tandem in
various wall systems. D IAMOND Brand Finish Plaster is very workable and easy to apply. I MPERIAL Brand Finish
Plaster provides a higher-strength and more impact-resistant finish, which is why it is often recommended as the
outer coat on a two-coat system. Whether you use D
IAMOND Brand, I MPERIAL Brand, or a two-coat system combining
the two, you’re sure to be pleased with the variety of textures you can achieve and the refined, finished look of a
well-executed plaster interior.
Preparation Protect the product from moisture during storage and on the job. In cold weather, heat the interior of the building
to a minimum of 55 °F (13 °C) for an adequate period before the application of plaster, while basecoat and finish
are being applied, and until the finish is dry. Keep air circulation at a minimum level during application and until
proper set has been achieved.
If possible, maintain building temperature-humidity combination in the “normal drying” area of the following graph.
When abnormally dry conditions exist, you can increase humidity by wetting down the floor periodically. During
these periods, make every effort to reduce air movement by closing windows and deflecting heater blower and
duct output away from the surfaces being plastered.
Protect all finish materials and finish surfaces from contact with Finish Plaster. These include glass, ceramic
materials, metal and wood. Apply wood, plastic or other exposed trim after finish application.
D
IAMOND
® and I
MPERIAL
®
Brand
Finish Plasters
Application Tips
90%
80%
70%
60%
50%
40%
30%
20%
10%
40 50 60 70 80 90 100 110 °F
4 10 16 21 27 32 38 43 °C
Plaster Drying Conditions
Maximum Temperature
Minimum Relative Humidity
minimum temp.
for plastering
normal drying
no air movement
detectable air
movement
rapid drying
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