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Packaging:
90 lbs bags
35 bags per pallet

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Exterior Stucco
BMI Natural Base, BMI White Base

Exterior stucco textures and finishes (pdf 2.2mb)

Description

BMI Natural Base and BMI White Base are cement based products for a permanent decorative finish over exterior surfaces. Material is factory prepared using raw ingredients that meet or exceed ASTM specifications. BMI exterior stucco is prepared in natural base, white base and in any standard color chart or can be custom color matched upon request. Texture available in Float 16/20, Texture 20/30, Marble, Dash, 20 mesh, 30 mesh, or upon job specification.

Preparation:

The brown coat shall be a uniform properly prepared Portland cement based substrate. The brown coat should be moist cured for at least 48 hours and allowed to dry completely for a minimum of 7 days.

Mixing:

Exterior stucco finish shall be power mixed with clean water for at least 15 minutes to assure complete hydration. Do not attempt to temper material that has started to set. Under most conditions, a batch will not start to set up for 90 minutes.

Application:

Finishes shall be 1/16" to 1/8" thick.

Hand application:
Apply using trowel. Spread on even coat then rubber float (sand finish) or trowel to desired texture.

Gun Application:
Spray first coat over dry surface and cover base coat completely. After first coat has dried, spray second coat in thinner consistency and bring to the desired texture. During periods of hot and dry weather, lightly mist with clean water. BMI exterior stucco finish will normally dry and set the same day. Final hardness will be reached in 28 days.

Do not apply with temperature below 40 degrees F.

Coverage

Coverage’s are affected by method of application, existing surface conditions and the texture desired. Approximate coverage’s per 90 lb bag are:

Finish Area
Sand/Float 12-16 sq yds
Lace/Texture 10-14 sq yds
Machine/Dash 8-12 sq yds
Smooth/Marble 14-18 sq yds

Specifications

Material Standards

  • Hydrated Type-S Lime: ASTM C-206
  • White Portland Cement: ASTM
  • C-150 Type I
  • BMI Exterior Stucco Finish: Conforms to ASTM C-926 Recommendations