System Description

The Hopper System is an architectural shape manufactured from Exterior Insulated System (EFIS), Class PB, consisting of an adhesive, base coat with reinforcing mesh. It is mechanically attached, adhesively attached, or both.

Design Requirements

1. Acceptable Substrates for Architectural Shapes or Pre-Coated Architectural Shapes are:
a. EIFS system base coat
b. Unglazed brick, cement plaster, concrete, masonry or stucco
c. Exterior grade gypsum sheathing meeting ASTM C-79 requirements for water resistant core Type X core at the time of application of the EPS Shape.
d. Silicone treated gypsum core sheathing surfaced with inorganic fiberglass mats meeting ASTM C-1177
e. Exterior fiber reinforced cement board and calcium silicate boards
f. APA Exterior or Exposure 1 rated Plywood, Grade C-D or better, nominal 1/2", minimum four ply
g. APA Exposure 1 rated Oriented Strand Board (OSB) nominal 1/2"
h. Galvanized expanded metal lath (2.6 or 3.3 Lbs/Yd2) installed over solid substrate
2. Deflection of substrate system shall not exceed 1/240
3. The slope of inclined surface shall not be less than 6:12
4. The length of inclined surface shall not exceed 12"
5. Expansion Joints:
a. Design and location of expansion joints in the EPS Pre-coated shapes is the responsibility of the project designer and shall be noted on the project drawings. As a minimum, expansion joints shall not be placed at the following locations:

1. Where expansion joints occur in the substrate system
2. Where building expansion joints occur
3. Where prefabricated panels abut one another
4. At floor lines in wood frame construction
5. Where EIFS system abuts dissimilar materials
6. Where substrate changes
7. In the continuous elevations at intervals not exceeding 75 feet.
8. Where significant structure movement occurs such as changes in roofline, building shapes or structural movement.

Deliveries, Storage and Handling

1. All materials shall be delivered to the jobsite in bundles with labeling applied.
2. Upon arrival, materials shall be inspected for physical damage.
3. Materials shall be stored at the jobsite in a cool, dry location, out of direct sunlight, protected from extreme weather and other damage.

Design Responsibility

It is the responsibility of both the designer and the purchaser to determine if a product is suitable for their intended use. The designer selected by the purchaser shall be responsible for all decisions pertaining to design, detail, structural capability, attachment and shop drawings.

Materials

1. Adhesives: Shall be compatible with EPS, no petroleum based adhesives.
2. Insulation Board: Only certified EPS, aged, 100% virgin and meeting density requirements.
3. Base coat: Shall be compatible with the EPS board and reinforcing meshes.
4. Reinforcing Meshes: Shall be balanced open weave, glass fiber treated for compatibility with other system materials and available in different minimum tensile strengths.