BMI 290 Bond

Exterior Stucco

BMI 290 is a specially formulated cementitious product designed to adhere decorative foam shapes to stucco, masonry, or concrete surfaces.

Exterior Stucco Textures and Finishes

Find the suggested application procedure by downloading our stucco texture and finish chart. 

Where to use

  • Adhesive and base coat for BMI Finishes
  • Leveling coat over approved substrates

Advantages

  • Provides suitable base for different texture finishes 
  • Increases adhesion and flexibility 
  • Easy and quick to apply
  • Easy to mix and store

Preparation:

Mixing

BMI 290 is mixed only with clean, potable water in a mechanical mixer or with a drill mixer in a five gallon pail. Mix for a minimum of three minutes until a paste like consistency is achieved. Do not overmix, although mixture can be retempered if needed. Do not mix any additives with BMI 290 unless recommended by manufacturer.

Clean Up:
BMI 290 is highly adhesive. Before material dries, tools and machinery require only water and sponge for simple cleanup. Spillage and overspray should be removed before BMI 290 dries. If dry, residue will require time consuming removal. 

Application

  • BMI Bond 290 requires the use of a mesh product (fiberglass or synthetic) over the foam substrate.
  • BMI Bond 290 can be applied to foam substrate and mesh utilizing an air induced application gun or by hand trowel.
  • Following EIMA guidelines, BMI Bond 290 is applied to architectural foam details, the mesh is then imbedded into the wet foam layer with a trowel and additional BMI Bond 290 mixture is applied (if necessary) to “hide” the mesh and to smooth out the BMI Bond 290 layer.

Coverage:

One 50 lb. bag of BMI 290 covers approximately 80-100 sq. ft. if applied with 1/4" notched trowel. If used as a coating 1/8" thick approximately 45-60 sq. ft. As a leveler coverage may vary depending on thickness of application. 

Product Procedures:

BMI 290 requires the use of a mesh product (fiberglass or synthetic) over the foam substrate. BMI 290 can be applied to foam substrate and mesh utilizing an air induced application gun or by hand trowel.

Following EIMA guidelines, BMI 290 is applied to architectural foam details, the mesh is then imbedded into the wet foam layer with a trowel and additional BMI 290 mixture is applied (if necessary) to "hide" the mesh and to smooth out the BMI 290 layer. 

Recommended minimum thickness is 1/16" to 1/8".

Curing:
BMI 290 must cure for 72 hours before application of polymer finish coat. If a stucco cover coat is applied, its application should take place within 48 hours. If time is longer than 48 hours, a suitable bonding agent is recommended.

In hot or dry climate conditions, lightly fog BMI 290 with water to ensure proper curing.