Plaster - BMI 690

plaster Standard, Standard w/fibers, Accelerated, Accelerated w/fibers

BMI 690 is a premium pre-blended cement-lime-sand mixture that has been specially formulated for the scratch and brown coat. This pre-blended product assures consistent quality throughout the project.

• Easy use, only add water
• Spray and hand applications
• No waste - use only what material is needed and take the leftovers to your next job
• Due to the thickness in its application, BMI 690 holds onto moisture longer, thus, curing slower and minimizing suction on the wall surface resulting in more color uniformity, reduced cracking and higher yield of finish coat applications
• Can be applied 7/8" (22.2 mm) in one pass

Usage

BMI 690 can be applied over any conventional substrate following the correct procedure for each different application by maintaining a proper bond and moisture barrier including:

• Open Stud
• Wood Based Sheathing
• Exterior Gypsum Sheathing
• Concrete Block / Masonry and over any conventional lath: self-furred stucco wire
• Metal Lath
• Structa Wire

Advantages

• Easy use, only add water
• Spray and hand applications
• No waste - use only what material is needed and take the leftovers to your next job
• Due to the thickness in its application, BMI 690 holds onto moisture longer, thus, curing slower and minimizing suction on the wall surface resulting in more color uniformity, reduced cracking and higher yield of finish coat applications
• Can be applied 7/8" (22.2 mm) in one pass

Packaging

90 lb. (40.82 kg) bag

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

• 2009 International Building Code (IBC)
• 2009 International Residential Code (IRC)
• Meets ASTM C-926 for Portland Cement based plaster
• LEED accreditation available
• ICC-ES report ESR-2535

Material Standards:

• Portland Cement Type II/V: ASTM C-150
• Type S Lime: ASTM C-206
• Limestone, siliceous graded sands: ASTM C-897

Product Information

Shelf Life

12 months from date of production if stored properly in original, unopened and undamaged sealed packaging

Storage Conditions

Store dry at 40-95 °F (4-35 °C)

Protect from moisture, if damp, discard material

Application

Application Steps

MIXING

Continuous Mixer

• BMI 690 is a pre-blended product that can be mixed in a continuous mixer supplied by BMI Products.
• Using our portable silo, with a continuous mixer attached, the BMI 690 system is complete.
• The material is delivered in bulk form, mixed with the correct amount of water through the continuous mixer and applied on the wall.
• BMI Products trains on the job site for the first day of use to ensure correct usage of machinery.
• BMI Products has technicians available in the field for troubleshooting.

Mechanical Mixer

• When using a mechanical plaster mixer, mix for three minutes but never more than five minutes.
• DO NOT OVERMIX!

APPLICATION

• BMI 690’s unique formulation allows for more material to remain on the wall and not be wasted due to fallout or overspray.
• Trowel or spray on the mixture to full depth of scratch and brown.
• Level off walls but do not overwork the material.
• Do not wet float the brown coat.
• Before the finish coat is applied, BMI 690 needs to be cured for a minimum of 7 days per UBC code 2508. Sec. 2508.6 of the Uniform Building Code (UBC) and Sec. 2512.8 of the 2010 California Building Code (CBC) allows for immediate successive application of scratch and brown coats.

See More

See Less