Exhibit C - AFUF Window Seal Replacement.pdf

SECTION 072400

EXTERIOR INSULATION AND FINISH SYSTEM (EIFS)

National Renewable Energy Laboratory 10/10/18 Rev. 0 EXTERIOR INSULATION AND FINISH SYSTEM (EIFS) 072400-1 AFUF Window Seal Replacement

PART 1 - GENERAL

1.1 DESCRIPTION OF WORK

A. Work included: The repair and refinishing of existing EIFS system as required to complete the related scope of work to provide new sealant at existing frames, openings, and building façade joints. Repair procedures to be per EIFS manufacturer’s requirements as well as Dow EIFS / DOWSIL Restoration Guide recommendations.

B. EIFS repairs/refinishing to be of a type and method approved for Type PB EIF System consisting of adhesive insulation board, reinforcing mesh, and finish on approved substrates.

C. Design Requirements: EIFS current published information shall be followed for suggested detail treatments.

1. The minimum slope of inclined surfaces shall be not less than 3" in 12".

2. Maximum deflection of substrate systems shall not exceed L/240.

3. Acceptable substrates include: masonry, concrete, exterior grade gypsum sheathing, cement plaster.

4. Expansion joints are required at building expansion joints, panel joints, and other areas where significant structural movement may occur.

5. Reinforcing fabric to provide high impact resistance and resistance to bird damage.

1.2 RELATED WORK

A. Section 079200 - Joint Sealants

1.3 WARRANTY

A. Provide written warranty for materials and workmanship for a period of 5 years.

1.4 QUALITY ASSURANCE

A. Use adequate numbers of skilled workman who are thoroughly trained in the necessary crafts and who are completely familiar with the specified requirements and the methods needed for proper performance of the work of this Section.

B. Use an installer currently approved in writing by the manufacturer of the approved exterior insulation and finish system materials.

C. The EIFS shall be recognized by: ICC.

D. The System shall have been tested for: accelerated weathering, mildew resistance, salt spray resistance, and full-scale structural performance.

E. The System shall have been tested for fire performance in accordance with; Modified ASTM E108, ASTM E119, ULC-S101, and UCB 17-6 Multi-Story Test.

1.5 SUBMITTALS

A. Comply with pertinent provisions of Section 013300.

B. Product

1. Materials list of items proposed to be provided under this Section.

2. Manufacturer's specifications and other data needed to prove compliance with the specified requirements.

National Renewable Energy Laboratory 10/10/18 Rev. 0 EXTERIOR INSULATION AND FINISH SYSTEM (EIFS) 072400-2 AFUF Window Seal Replacement

3. Manufacturer's recommended installation procedures which, when approved by the Owner, will become the basis for accepting or rejecting actual installation procedures used on the Work.

4. Applicator shall match color of existing EIFS system on building. Applicator shall prepare a sample panel on appropriate substrate 4'-0" x 4'-0" for comparison and approval. Sample shall be portable.

1.6 PRODUCT HANDLING

A. Comply with pertinent provisions of Section 016000.

PART 2 - PRODUCTS

2.1 ACCEPTABLE MANUFACTURES

A. Except as otherwise approved by the Owner, provide matching repair and replacement materials from one of the following:

1. Dryvit Systems, Inc., 420 Lincoln Avenue, Warwick, Rhode Island 02288;

2. STO Energy Conservation, Inc., 25 Curtis Avenue, Rutland, Vermont 05101.

2.2 MATERIALS

A. Except as otherwise approved by the Owner, provide materials complying with the following:

1. Portland cement: ASTM C150, type I.

2. Insulation board: EPS Extruded Polystyrene (or approved by manufacturer); 1-1/2” thickness.

Insulation to be grooved on back to provide integral drainage of moisture.

3. Adhesive: As supplied by the manufacturer of the approved system.

4. Reinforced fabric: Glass fiber fabric as supplied by the manufacturer of the approved system, for high impact and bird damage resistance.

5. Finish: Synthetic plaster as supplied by the manufacturer of the approved system, in color and texture selected by the Owner.

6. Water: Clean and potable.

7. All supplied components of the EIF system shall be obtained from a single source.

8. Provide other materials, not specifically described but required for a complete and proper installation, as selected by the Contractor subject to the approval of the Owner.

PART 3 - EXECUTION

3.1 SURFACE CONDITIONS

A. Examine the areas and conditions under which work of this Section will be performed. Correct conditions detrimental to timely and proper completion of the Work. Do not proceed until unsatisfactory conditions are corrected.

B. As necessary, provide proper remedy for:

1. Substrata contrary to recommendations of the manufacturer of the approved system.

2. Defects or coatings on substrata that will adversely affect execution and quality of the Work;

3. Hot spots, other residue, and releasing agents such as silicones and oils;

EXTERIOR INSULATION AND FINISH SYSTEM (EIFS) 072400-3 AFUF Window Seal Replacement

4. Planar irregularities greater than 1/4".

3.2 MIXING

A. If the Dryvit system has been approved for the use on this Work, use the following procedures.

Modify the procedures as approved by the Owner in the event other system has been approved.

B. Adhesive:

1. For mixing and preparing adhesive:

a. Use a clean container, free from all foreign substances;

b. Do not use a container which has been used for a petroleum product, or which has been cleaned with a petroleum product;

c. Immediately after mixing, clean the containers and mixing equipment.

d. Use a mixer similar to "Goldblatt Jiffer Mixer Number 15311H7," powered by 1/2" drill at 400 to 500 rpm.

e. Stir the adhesive prior to adding portland cement.

f. Mix the specified portland cement with the specified adhesive in a ratio of one part portland cement to one part adhesive.

g. Measure quantities of portland cement and adhesive separately prior to mixing;

h. Add the cement to the adhesive in small increments while thoroughly mixing each increment;

i. Add the specified water only as required to adjust workability.

j. Do not add rapid binders, anti-freeze, accelerators, or any other material except as specifically approved by the Owner and by the manufacturer of the approved system.

C. Finish:

1. Using the high-speed mixer, thoroughly mix the factory-prepared finish material until a uniformly workable consistency is attained.

2. Add the specified water only as required to adjust workability.

3.3 APPLICATION

A. Insulation board – N/A for scope of work.

B. Coating and reinforcing fabric:

1. Using a stainless steel trowel, apply the mixed adhesive to the entire surface of the insulation board to a uniform thickness of approximately 1/16".

2. Immediately thereafter, place the specified reinforcing fabric against the coating and, by troweling from the center to the edges, embed the fabric into the coating.

a. Make reinforcing fabric continuous at corners, and lap not less than 2-1/2" at fabric edges;

b. Permit no fabric wrinkles;

c. Completely embed the fabric into the coating.

3. Where additional impact layers of adhesive and reinforcing fabric are shown on the Drawings, repeat the above procedures after the preceding layer has set up.

C. Finish:

EXTERIOR INSULATION AND FINISH SYSTEM (EIFS) 072400-4 AFUF Window Seal Replacement

1. Do not commence application of finish until coating and reinforcing fabric layers are completely dry and hard.

2. Using a clean stainless steel trowel, apply a tight coat of the specified finish material directly to the reinforced coating.

a. Apply and level during the same operation to the minimum thickness obtainable consistent with uniform coverage.

b. Apply and texture in a continuous operation over a wall surface.

c. Work to corners and joints, and do not allow finish material to set up within a distinct wall or panel area.

d. Use sufficient staging and personnel to accomplish a uniform appearance.

3. Make the final texture after the finish has gelled to where it does not stick to the trowel.

a. Achieve the approved texture by allowing trowel to roll on the round aggregate, using a variety of motions and trowels or floats to match the approved sample.

b. Provide a final thickness not greater than the diameter of the largest aggregate of the finish material.

END OF SECTION

EXTERIOR INSULATION AND FINISH SYSTEM (EIFS) 072400-5 AFUF Window Seal Replacement

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3. Where additional impact layers of adhesive and reinforcing fabric are shown on the Drawings, repeat the above procedures after the preceding layer has set up.