Exterior Insulation and Finish System

�� SECTION 07240

�� EXTERIOR INSULATION AND FINISH SYSTEM

�� 16225 Park Ten Place

�� Suite 850

�� Houston, TX� 77084-5155

�� Tel. 713-492-5100

�� Fax� 713-492-5120

PART 1� GENERAL

1.1 SECTION INCLUDES

�� A.� Exterior Insulation and Finish System (EIFS).

1.2 RELATED SECTIONS

�� A.� Section 03300 - Cast-In-Place Concrete.

�� B.� Section 04200 - Unit Masonry.

�� C.� Section 05400 - Cold-Formed Metal Framing.

�� D.� Section 06100 - Rough Carpentry.

�� E.� Section 06115 - Sheathing.

�� F.� Section 07210 - Building Insulation.

�� G.� Section 07600 - Flashing and Sheet Metal.

�� H.� Section 07900 - Joint Sealers.

1.3 REFERENCES

�� A.� APA Form E30L - Residential and Commercial.

�� B.� ASTM C 79 - Standard Specification for Gypsum Sheathing Board.

�� C.� ASTM C 150 - Standard Specification for Portland Cement.

�� D.� ASTM C 578 - Standard Specification for Specification for Rigid, Cellular Polystyrene Thermal Insulation.

1.4 SUBMITTALS

�� A.� Submit under provisions of Section 01300.

�� B.� Product Data:� Submit manufacturer's specifications, installation instructions, and product data.

�� C.� Selection Samples:� Submit samples of texture and color for the Architect's selection.

�� D.� Verification Samples:� Submit samples to demonstrate compliance with texture and color indicated.

�� E.� Certificates:� Submit installer's certificate of training.

�� F.� Project Closeout Submittals:� Submit warranty.

1.5 QUALITY ASSURANCE

�� A.� Installation shall be performed by or supervised by C-Cure approved applicators.

�� B.� Mock-ups:� Provide mock-up panel using materials specified for final work.� Construct mock-up as directed, and of full thickness.� Include typical conditions at panel edge and at sealant joints.� Demonstrate the proposed range of color, texture, and workmanship to be expected in the completed work.� Obtain Architect's acceptance of visual qualities of the sample panel.

1.6 DELIVERY, STORAGE, AND HANDLING

�� A.� Deliver materials in their original sealed containers bearing manufacturer's name and identification of product with written application instructions.

�� B.� Store foam insulation off the ground and protected from exposure to sunlight and moisture.

�� C.� Protect ready-mixed materials from extreme heat, sun, and frost.� Store factory proportioned bagged materials off the ground and protected from moisture.

1.7 ENVIRONMENTAL REQUIREMENTS

�� A.� Apply materials only when ambient and surface temperatures are above 38 degrees F and rising during application and drying period.� For installation in temperatures less than 38 degrees F, provide temporary heat.

1.8 WARRANTY

�� A.� Provide manufacturer's standard warranty.

PART 2� PRODUCTS

2.1 MANUFACTURERS

�� A.� Provide products manufactured by or approved by C-Cure Corporation, 16225 Park Ten Place, Suite 850, Houston, TX� 77084-5155.� Telephone 713-492-5100.� FAX 713-492-5120.

�� 1.� Substitutions will not be acceptable.

2.2 PRODUCTS

�� A.� Conditioner:� "C-Cure Surface Primer";� water-based surface conditioner.

Delete if not required.

�� B.� Leveler:� "C-Cure InsulBond";� factory proportioned, 100% acrylic polymer based leveler.

Delete inapplicable substrates.

�� C.� Adhesive:� "C-Cure EPS Adhesive";� noncementitious, ready-mixed, 100% acrylic copolymer emulsion-based adhesive.� Use over the following substrates:

�� 1.� Concrete.

�� 2.� Masonry.

�� 3.� Portland cement plaster.

�� 4.� Gypsum sheathing.

�� 5.� Dens Glass Gold.

�� 6.� Cementitious sheathing.

�� 7.� Plywood.

�� D.� Adhesive:� "C-Cure InsulBond";� factory proportioned, 100% acrylic polymer based adhesive.� Use over the following substrates:

�� 1.� Concrete.

�� 2.� Masonry.

�� 3.� Portland cement plaster.

�� 4.� Gypsum sheathing.

�� 5.� Dens Glass Gold.

�� 6.� Cementitious sheathing.

�� E.� Insulation Board:� Expanded polystyrene (EPS) board.

�� 1.� ASTM C 578 Type I.

�� 2.� Flame spread:� Less than 25.

�� 3.� Density:� 1.0 pcf nominal.

�� 4.� U-value:� 0.25 per inch.

�� 5.� Dimensional tolerances:

�� a.� Edges square within 1/16 inch over the entire length of the board.

�� b.� Thickness:� +/- 1/16 inch.

�� 6.� Aged a minimum of 6 weeks air dried, or equivalent kiln dried.

�� 7.� Size:� Not larger than 2 feet by 4 feet.

�� 8.� Exhibit proper bead fusion and structural strength, according to C-Cure EPS insulation board specifications.

�� 9.� Manufactured and packaged by a C-Cure approved and licensed EPS board molder.

�� 10. Each board marked on the end with a C-Cure identification mark and packaged with proper identification information.

�� F.� Base Coat:� "C-Cure InsulBond";� ready-mixed, noncementitious, 100% acrylic polymer base coat.

�� G.� Base Coat:� "C-Cure EPS Adhesive";� factory proportioned 100% acrylic polymer based base coat.

�� H.� Reinforcing Mesh:�

�� 1.� Standard mesh:� "C-Cure Krakmaster Mesh";� symmetrical, interlaced glass fiber made from twisted multi-end strands and alkaline resistant coating, at least 20 grams per square yard.� Shift proof, with trimmed roll edges to minimize building of overlapped seams.

�� 2.� High impact mesh:� "C-Cure Krakmaster Hi-Impact";� Double strand, interwoven glass fiber mesh with alkaline resistant coating.

�� I.� Primer:� "C-Cure 865 Primer";� acrylic copolymer emulsion for C-Cure acrylic-based finishes.

�� J.� Finish:� C-Cure exterior ready-mixed wall coating.

�� 1.� Type texture, color, and aggregate size as indicated on the drawings.

2.3 MATERIALS

�� A.� Cement:� Portland cement, ASTM C 150, Type I or Type II.

�� B.� Water:� Potable.

2.4 MIXES

�� A.� "C-Cure Surface Primer":� Mix with a clean, rust-free, high speed mixer.� Add water as directed on labeling.

�� B.� "C-Cure InsulBond P":� Mix with 6-7 quarts of water per 50 lb bag;� allow to set for approximately 5 minutes; adjust mix if necessary, then remix to a uniform consistency.

�� C.� "C-Cure InsulBond L":� Mix 1:1 with Portland Cement.

�� D.� "C-Cure EPS Adhesive":� Mix with a clean, rust-free, high speed mixer.

�� E.� Primer:� Mix with a clean, rust-free, high speed mixer.

�� F.� Finish:� Mix with a clean, rust-free high speed mixer.� Water may be added to aid workability only in the amounts indicated on finish product label.

�� G.� Under no circumstances shall any products be altered by adding any additives, except for small amounts of water as directed on product labels.� Antifreeze, accelerators, rapid binders, etc., are forbidden.

PART 3� EXECUTION

3.1 EXAMINATION AND PREPARATION

�� A.� Verify that substrates to receive EIFS are structurally sound, clean, and dry and free of warpage, residual moisture, or damage from moisture.

�� B.� Verify that substrates are uniform, with no irregularities greater than 1/8 inch in 4 feet.

�� C.� Verify that substrates meet the following requirements:

�� 1.� Gypsum sheathing meeting ASTM C 79:� Handled, installed, and protected in accordance with Gypsum Association's standard and with manufacturer's requirements.

�� 2.� Dens Glass Gold:� handled, installed and protected in accordance with manufacturer's requirements.

�� 3.� Plywood or other APA sheathing panel product:� Meet APA Exterior or Exposure I classification;� stored, handled, and installed in accordance with APA design and construction guidelines.

�� 4.� Cementitious sheathing (autoclaved cement fiber board or aggregate core with glass mesh facing suitable for exterior exposure):� Follow manufacturer's published recommendations for storage, handling, installation and protection.

�� D.� Concrete, Masonry, and Plaster Substrates:� Properly cured and free of dirt, oil, grease, mildew, fungus, laitance, efflorescence, and any other contaminant.

�� 1.� Remove form release agents and other surface contaminants by wire brushing, blast cleaning, water blasting, or other appropriate means.

�� 2.� Remove efflorescence with diluted acid wash and rinse, or other appropriate means.

�� 3.� Treat dry, porous surfaces with surface conditioner.

�� 4.� Apply leveler to correct surface irregularities up to 1/8-inch thick.

�� 5.� Painted surfaces, non-load bearing:� Remove paint by wire brushing, blast cleaning, or other appropriate means.

�� 6.� Painted surfaces, load bearing:� Treat with surface conditioner.

�� E.� Do not proceed with installation until unsatisfactory conditions have been corrected.

3.2 INSULATION

�� A.� Install starter strip of mesh to wall at the base line.� Install with adhesive prior to installation of insulation board.

�� 1.� Strip shall be wide enough to adhere 4 inches of mesh onto the wall, to be able to wrap around the board edge, and to cover approximately 4 inches on the outside surface of the insulation board.�

�� 2.� Follow this "backwrap" procedure wherever EIFS terminates against other substrates.

�� B.� Apply the adhesive to the back of the insulation board with the proper size notched trowel.� Ribbons of adhesive shall be uniform and run horizontal with the long dimension of the board.

�� C.� Immediately place insulation boards horizontally on the walls starting from a level base line.

�� 1.� Stagger vertical joints and interlock boards at all inside and outside corners.

�� 2.� Apply firm pressure over entire surface of the boards to ensure uniform contact.

�� 3.� Boards shall bridge sheathing joints by a minimum of 8 inches.

�� 4.� Butt board joints tightly together to eliminate any thermal brakes in the EIFS.

�� 5.� Take care to prevent any adhesive from getting between the joints of the boards.

�� 6.� Fill open joints in the insulation board layer with slivers of insulation board or an approved spray foam.

�� D.� Nails, screws, or any other type of nonthermal mechanical fastener shall not be used.

�� E.� After insulation boards are firmly adhered rasp the surface to achieve a smooth, even surface and to remove any ultraviolet ray damage.

�� F.� Where aesthetic V-grooves are indicated, leave not less than 3/4 inch thickness of insulation board at thinnest point of groove.

3.3 BASE COAT AND MESH

�� A.� High Impact Areas:� At high impact areas, as indicated on drawings, install appropriate high impact mesh.�

�� 1.� Apply base coat with proper spray equipment or a stainless steel trowel to a uniform thickness of approximately 1/8 inch.�

�� 2.� Work horizontally or vertically in strips of 40 inches, and immediately embed the high impact mesh into the wet base coat and feather out seams and edges.

�� 3.� Tightly butt mesh edges with gaps no greater than 1/8 inch at seams.�

�� 4.� The finished thickness of the base coat shall be such that the high impact mesh is fully embedded.

�� 5.� Allow this application to dry before applying standard reinforcing mesh to entire area with appropriate coat.

�� B.� Standard Impact Mesh:

�� 1.� Apply base coat over the insulation board, including areas with high impact mesh, with proper spray equipment of stainless steel trowel to a uniform thickness of approximately 1/16 inch.

�� 2.� Work horizontally or vertically in strips of 40 inches, and immediately embed standard reinforcing mesh into the wet base coat.

�� 3.� Overlap mesh not less than 2-1/2 inches at mesh joints.

�� 4.� Double wrap mesh at all corners.� (Alternate corner treatment: embed corner mat in base coat, allow to dry, then overlap up to corner with standard reinforcing mesh embedded in base coat).

�� 5.� Avoid wrinkles in the mesh.

�� 6.� The finish thickness of the base coat shall be such that the mesh is fully embedded.

�� 7.� Allow base coat to thoroughly dry before applying primer or finish.

3.4 JOINTS

�� A.� Where the EIFS meets dissimilar material or terminates (for example, window, and door frames), cut back insulation board from the adjoining material a minimum of 1/4 inch to form an isolation joint and coat board edges with base coat and mesh in accordance with standard "backwrapping" procedure.�

�� B.� Expansion Joints:

�� 1.� Construct expansion joints in the following locations:

�� a.� Where expansion joints exist in the substrate.

�� b.� Where the EIFS adjoins dissimilar construction.

�� c.� At floor lines in multilevel wood frames construction.

�� 2.� The EIFS shall terminate at the expansion joint to provide appropriate joint size.� Coat board edges with base coat and mesh in accordance with standard "backwrapping" procedure.

�� C.� Install backer rod and joint sealant in joint after base coat is fully dry to prevent water from getting into or behind the system.� (Joint sealant and backer are specified in Division 7.)

�� D.� Use of plastic or metal corner beads, stop beads, etc., is forbidden.

3.5 FINISH COAT

�� A.� Primer:� Where primer is required, apply with brush, roller, or proper spray equipment over clean, dry base coat and allow to dry thoroughly before applying finish.

�� B.� Ensure that base coat (and primer, if any) has thoroughly dried before applying finish coat.� The finish shall be applied by spraying, rolling or troweling with a stainless steel trowel, depending on finish specified.�

�� Use a clean, rust-free, high speed mixer to thoroughly stir the finish to a uniform consistency (small amounts of clean water may be added to aid workability.)

�� C.� Avoid application in direct sunlight.

�� D.� Apply finish in a continuous application, always working to a wet edge.

�� E.� Weather Conditions:

�� 1.� Adjust the scheduling of work to achieve desired results during hot or dry conditions which limit working time and accelerate drying.

�� 2.� During cool or damp conditions which extend working time and retard drying, provide temporary protection against wind, dust, dirt, rain, and freezing.

�� F.� Avoid installing separate batches of finish side-by-side.

�� G.� "Classique" finishes shall be floated with a plastic trowel to achieve their texture.

3.6 CLEANING AND PROTECTION

�� A.� Do not allow debris to accumulate on site.

�� B.� Protect adjacent work from spills and stains.� Immediately remove and clean adhesive, primer, base coat, or finish coat materials from surfaces not scheduled to receive EIFS.

�� Back to SPECDISK Table of Contents

sorabji.com > foundcrap > found floppies > specdisk