Page 173 - Des Moines - Zoning, Planning and Design Ch 134, 135

DRAFT 135-2. DeSiGN reQUireMeNtS

Facade and Roof Materials

they weather well, have a low failure rate, require a b. Full Dimensional Brick.
low level of maintenance, and create buildings with a c. Cement-based, hard coat stucco.
longer life cycle and a sense of permanence.
B. Simple, Well Organized Facades. The facade d. Painted, stained, or treated wood,
engineered wood, or composite wood lap
material requirements limit the number of facade siding and wood shingles.
materials used on any one building to promote
simpler, well organized facades that are easy to e. Fiber Cement Board.
comprehend and have a clear hierarchy. f. Vinyl siding with a minimum thickness of

c. Human-Scaled Building Units. The intent of the .042 inches.
use of smaller, more human-scaled building units e. limited Use Major Materials. The following
often means the building facade proportions are materials are prohibited as a major material except
comfortable to people. A high level of detail from consistent with the following:
smaller scaled, less monolithic materials relates
facades to pedestrians. 1. Economy and Thin Bricks. Brick types larger than
three inches in height and thin bricks are allowed
2.2.2 MAJOr MAteriAlS as major materials on rear, interior side, alley,
A minimum of 80 percent of each street facade, not and rail corridor facades for all building types.
including window and door areas, shall be composed of 2. Concrete Masonry units. Burnished, glazed, or
major materials, as specified in this section. honed concrete masonry units or blocks are
A. Simplicity of Surface Materials. A minimum of 60 allowed as major materials on facades facing
rear, alley, and the rail corridor of all buildings
percent of each facade, not including window and except House building types.
door areas, shall be faced of a single major material,
not including architectural metal panel systems. 3. Synthetic stucco or elastomeric finishes on
B. Building type. Some materials are further limited stucco are permitted in upper floors of buildings,
unless otherwise stated in Chapter 135, Article 1.
by building type. See Chapter 135, Article 1.
c. Side and rear Facades. Permitted Major Materials 4. unfinished concrete panels are limited to EX and
I districts.
shall continue around the corner of a building from
the street facade onto the side or rear facade for F. Prohibited Major Materials. The following
no less than 20 feet along the side or rear facade. materials are prohibited as major materials:
Refer to Limited use Major Materials for materials 1. Face-sealed EIFS synthetic stucco assemblies and
permitted on side and rear facades. decorative architectural elements.
D. Allowed Major Materials. The following are 2. unfinished or untreated wood.
allowed major materials. See Figure 2.3-A and Figure
2.3-B. 3. Glass block.

1. The following major materials are allowed for all 4. Plastic, including high-density polyethylene and
buildings except those in N districts: polycarbonate panels.
a. Stone. 5. Fiberglass and acrylic panels.
b. Full Dimensional Brick. 2.2.3 MiNOr MAteriAlS
c. Cement-based, hard coat stucco. Allowed minor materials are limited to trim, details, and
d. Finished Concrete. other accent areas that combine to twenty percent or
less of the total surface of each facade.
e. Architectural Metal Panel Systems. A. Major Materials. All allowed major materials may
f. Glass Curtain Wall Systems. serve as minor materials.
g. Wood and composite wood rainscreen B. Allowed Minor Materials. The following are
systems allowed minor materials:
2. The following major materials are allowed for all 1. Fiber cement boards, details, and panels.
buildings in N and NX districts only: 2. Treated or painted wood trim pieces, soffits,
a. Stone. surfaces.

CITY OF DES MOINES CHAPTER 135: PLANNING AND DESIGN DRAFT 135-2-3