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Historic Preservation - Technical Procedures

Spectitle:

Installing A Netting Bird Deterrent System To Protect Large Areas Of Carvings, Sculpture And Moldings

Procedure code:

1029601R

Source:

National Capitol Region Specifications

Division:

Specialties

Section:

Bird Control

Last Modified:

02/24/2012

Details:

Installing A Netting Bird Deterrent System To Protect Large Areas Of Carvings, Sculpture And Moldings



INSTALLING A NETTING BIRD DETERRENT SYSTEM TO PROTECT LARGE AREAS
OF CARVINGS, SCULPTURE AND MOLDINGS


BEFORE PROCEEDING WITH THE WORK IN THIS PROCEDURE, CAREFULLY
REVIEW PROCEDURE 10296-01-S WHICH DESCRIBES THE ADVANTAGES AND
DISADVANTAGES OF THE MOST COMMON TYPES OF BIRD DETERRENT SYSTEMS
USED ON BUILDINGS.  ALL METHODS OF BIRD CONTROL HAVE LIMITED
EFFECTIVENESS, MAKING THE SELECTION OF A SYSTEM DIFFICULT.
SPECIFIC FACTORS, INCLUDING CLIMATE, BUILDING LOCATION, AND BIRD
SPECIES MUST BE CAREFULLY CONSIDERED IN ORDER TO SELECT THE MOST
APPROPRIATE SYSTEM.  ALL BIRD DETERRENT SYSTEMS ARE TEMPORARY
SOLUTIONS TO A PROBLEM AND, AS SUCH, SHOULD BE INSTALLED IN A
MANNER WHICH IS REVERSIBLE AND DOES NOT DAMAGE THE STRUCTURE OR
MATERIALS DURING INSTALLATION OR REMOVAL.


PART 1---GENERAL

1.01 SUMMARY

    A.   This procedure includes guidance on installing a netting
         bird deterrent system.  This type of system is most
         commonly used to protect large areas of architectural
         detailing, especially carvings, sculpture and moldings.
         It is usually installed on the upper portions of a
         building, where its presence will not be as apparent.

    B.   The netting system is designed to prevent birds from
         nesting in recessed portions of the building, in light
         wells, or under eaves by making entry into those areas
         difficult.  Netting can be a desirable solution if hung
         correctly and if an inconspicuous color of netting is
         selected.  It is most suited for large areas, is
         effective on most bird species, and can have a fairly
         long life span.  This system, however, is time consuming
         and expensive to install and can obscure detailing.
         Furthermore, gaps and holes in the netting will render
         the system ineffective.

    C.   See 01100-07-S for general project guidelines to be
         reviewed along with this procedure.  These guidelines
         cover the following sections:

         1.   Safety Precautions

         2.   Historic Structures Precautions

         3.   Submittals

         4.   Quality Assurance

         5.   Delivery, Storage and Handling

         6.   Project/Site Conditions

         7.   Sequencing and Scheduling

         8.   General Protection (Surface and Surrounding)

         These guidelines should be reviewed prior to performing
         this procedure and should be followed, when applicable,
         along with recommendations from the Regional Historic
         Preservation Officer (RHPO).

1.02 SUBMITTALS

    A.   Samples: Submit a 12" x 12" sample of proposed bird
         netting to the RHPO for approval of color.

    B.   Mock-ups: An area(s) selected by the RHPO will have a
         test installation of bird netting for approval by RHPO
         prior to beginning of work.

1.03 PROJECT/SITE CONDITIONS

    A.   Do not use adhesive on wet or damp surfaces or when
         temperatures are above 120 degrees F or below 45 degrees
         F.


PART 2---PRODUCTS

2.01 MANUFACTURERS

    A.   ProSoCo, Inc.
         755 Minnesota Avenue
         P.O. Box 1578
         Kansas City,  KS  66117
         800/255-4255 or 913/281-2700

2.02 MATERIALS

    A.   Bird Netting: UV stable, knotted plastic netting in color
         to blend with masonry, such as "Conservare Pigeon
         Control" (ProSoCo, Inc.), or approved equal.
         Characteristics of netting including color and grade must
         be approved by RHPO.

    B.   Anchors: Stainless steel mounting pins which will not
         rust or cause staining on masonry.

    C.   Adhesive: Epoxy putty; high modulus, high strength, non-
         sag, two-component, epoxy resin adhesive, designed for
         vertical and overhead bonding, moisture insensitive, and
         in color approved by RHPO.

2.03 EQUIPMENT

    A.   Masonry drill

    B.   Hammer


PART 3---EXECUTION

3.01 PREPARATION

    A.   Surface Preparation: Remove all bird excrement, from the
         application area.  See 04510-02-R for guidance.
         Application must take place after masonry cleaning
         operations are completed, but may be scheduled for work
         while staging is in place.

3.02 ERECTION, INSTALLATION, APPLICATION

    NOTE: OBTAIN APPROVAL FROM RHPO BEFORE PROCEEDING WITH THIS
    WORK.

    A.   Follow manufacturer's printed instructions for netting
         installation.  Area to be protected must be measured
         accurately.

    B.   Mark on perimeter of area to be covered by netting where
         holes are to be drilled.  Mount pins at mortar joints
         where possible.

    C.   Using a 3/16" drill bit, drill holes approximately 8"
         apart, 1-1/2" deep and at a 45 degree angle .  Remove all
         loose particles from the surface.

    D.   Press epoxy putty into holes and set pins into putty.

    E.   Reinforce edges of netting by using a simple weaving
         process with matching plastic thread.

    F.   Stretch netting over area to be protected and attach to
         anchoring pins.  Stretch netting so that the mesh runs
         vertically and horizontally, NOT diagonally.  The netting
         will blend better with the background when stretched in
         a horizontal and vertical direction.

                         END OF SECTION