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- SECTION 07212
-
- SPRAYED FOAM INSULATION FOR COLD STORAGE FACILITIES
-
- NOTE ** Foam Enterprises sprayed polyurethane foam
- insulation for coolers and freezers.
- NOTE **
- NOTE ** This section is based on the products of Foam
- Enterprises, Inc., which is located at:
- NOTE ** 13630 Water Tower Circle
- NOTE ** Minneapolis, MN 55441
- NOTE ** Tel: (800) 888-3342
- NOTE ** Fax: (612) 559-0945
- NOTE **
- NOTE ** This section covers the foam insulation and vapor
- retarder, plus optional thermal barrier (fire
- resistive) coating or other material.
- NOTE **
- NOTE ** This specification is based on the following
- publication of the Society of the Plastics
- Industry, Inc., Spray Polyurethane Foam Division:
- NOTE **
- NOTE ** "Spray Polyurethane Foam Systems for Cold Storage
- Facilities Operating Between -40degF and +50degF";
- copyright 1990.
- NOTE **
- NOTE ** SECTION 07212 - SPRAYED FOAM INSULATION FOR COLD
- STORAGE FACILITIES, Copyright 1997, The Architect's
- Catalog, Inc.
-
- PART 1 GENERAL
-
- 1.1 SECTION INCLUDES
- NOTE ** Edit items below as required for project.
-
- A. Sprayed polyurethane foam insulation with vapor retarder.
-
- B. Thermal barrier (fire resistive) coating.
-
- 1.2 RELATED SECTIONS
- NOTE ** Delete any sections below not relevant to this
- project; add others as required.
-
- A. Section 03300 - Cast-ln-Place Concrete: Cold storage
- rooms floor slabs over foam insulation.
- NOTE ** Roof Decks: This section should not be used to
- specify foam insulation on the exterior side of a
- roof -- use a true foam roofing specification for
- that. Some considerations for foam roofing over
- cold storage facilities are:
- NOTE **
- NOTE ** Metal decking or other conductive material should
- not be continuous between rooms of varying
- temperature.
- NOTE **
- NOTE ** When a low perm-rated material is used on the cold
- side of the insulation in a cold storage facility,
- such as in panels of metal roof decks, breaks in
- the exterior vapor retarder will result in the
- build-up of ice within the insulation. Routine
- maintenance inspections should be done to repair
- retarder breaks before this can occur.
- NOTE **
- NOTE ** A sprayed polyurethane foam roof system or any
- exterior insulation should not be applied over a
- lightweight concrete fill.
- NOTE **
- NOTE ** Roof deck should have a minimum slope of 1/4 inch
- per foot.
-
- B. Section 07570 - Coated Foamed Roofing: Spray
- polyurethane foam on exterior side of roof decks.
-
- C. Section 07600 - Flashing and Sheet Metal: Metal trim and
- flashings associated with insulation.
-
- D. Division 15 - Mechanical: Plumbing and HVAC components
- penetrating insulation.
-
- E. Division 16 - Electrical: Electrical components
- penetrating insulation.
-
- 1.3 REFERENCES
- NOTE ** Add any references to the list below that are
- included in text you have added to the section.
-
- A. ASTM C 177 - Standard Test Method for Steady-State Heat
- Flux Measurements and Thermal Transmission Properties by
- Means of the Guarded-Hot-Plate Apparatus.
-
- B. ASTM C 518 - Standard Test Method for Steady-State Heat
- Flux Measurements and Thermal Transmission Properties by
- Means of the Heat Flow Meter Apparatus.
-
- C. ASTM D 1621 - Standard Test Method for Compressive
- Properties of Rigid Cellular Plastics.
-
- D. ASTM D 1622 - Standard Test Method for Apparent Density
- of Rigid Cellular Plastics.
-
- E. ASTM D 2856 - Standard Test Method for Open-Cell Content
- of Rigid Cellular Plastics by the Air Pycnometer.
-
- F. ASTM E 84 - Standard Test Method for Surface Burning
- Characteristics of Building Materials.
-
- G. ASTM E 96 - Standard Test Methods for Water Vapor
- Transmission of Materials.
-
- H. SPI bulletin AX-119 - MDI-Based Polyurethane Foam
- Systems: Guidelines for Safe Handling and Disposal;
- Society of the Plastics Industry, Inc., Spray
- Polyurethane Foam Division.
-
- I. SSPC-SP 6 - Commercial Blast Cleaning (Part of Painting
- Manual, Volume 2); Steel Structures Painting Council.
-
- 1.4 SUBMITTALS
- NOTE ** Delete types of submittals not required.
- Coordinate submittal statements with other
- provisions in the section.
-
- A. Submit under provisions of Section 01300.
-
- B. Product Data: Manufacturer's data on products to be
- installed.
- 1. Application or installation instructions.
- 2. Listing, classification, and approval certifications.
- 3. Safety and handling instructions for storage,
- handling and use of the materials.
-
- C. Certifications: If manufacturer's published data sheets
- do not indicate compliance with all specification
- requirements, provide letter of certification that all
- products comply with the specification requirements;
- include primers (if required), foam and coatings.
-
- D. Shop Drawings: Show materials and details of fabrication
- of sheet metal, accessories, or other fabricated items.
-
- E. Qualification Statements:
- 1. Manufacturer qualifications.
- 2. Installer qualifications.
- 3. Independent inspector qualifications.
-
- F. Applicator's Field Quality Control Procedures: Written
- description of procedures to be utilized to insure proper
- preparation and installation of foam and coatings, detail
- work and follow-up inspection.
-
- G. Maintenance Data: Manufacturers' recommended protection,
- cleaning, and repair procedures, including recommended
- frequency of inspection.
- NOTE ** It is strongly recommended that a maintenance
- program, including annual inspections, be
- established with the installer for the system to
- achieve its full value.
- 1. Include proposal for annual inspection program.
-
- 1.5 QUALITY ASSURANCE
- NOTE ** Delete the following if not required, as these
- provisions add cost to the project.
-
- A. Foam and Coating Manufacturer Qualifications: Firms which
- can show evidence of ability to manufacture the products
- specified and sufficient financial resources and
- manufacturing facilities to furnish materials on this
- project; evidence required includes references, past
- project descriptions, specimen warranty, product data,
- test data, and code approvals.
-
- B. Installer Qualifications: A firm with experience
- installing insulation systems of the type specified.
- NOTE ** Delete the following paragraph if not required.
- NOTE **
- NOTE ** The Society of the Plastics Industry Spray
- Polyurethane Foam Division conducts an
- Accreditation Program for improvement of quality in
- the application of spray polyurethane foams and
- coatings.
- NOTE **
- NOTE ** Individual accreditation attests that required
- courses and field inspection requirements have been
- successfully completed.
- NOTE **
- NOTE ** Contractor level accreditation requires that a
- company employ at least one individual who has
- achieved management level accreditation and at
- least one individual who has achieved foreman level
- accreditation.
- NOTE **
- NOTE ** The list of accredited individuals and firms is
- available from SPFD.
- 1. Show contractor level accreditation by SPI SPFD
- Accreditation Program.
- NOTE ** Delete the following paragraph if the manufacturer
- does not have an approved installer program.
- 2. Approved or certified by the foam manufacturer as
- qualified to install the specified system.
- 3. Provide information concerning projects similar in
- nature to the one proposed including location and
- person to be contacted.
-
- C. Manufacturer Field Representation: Provide qualified
- representatives of the foam and coating manufacturers to
- monitor and inspect the installation of their products.
- NOTE ** Independent inspection is highly recommended,
- especially if single source responsibility is not
- specified or no warranty is specified.
-
- D. Independent Inspection: Provide inspection of the
- installation by a qualified SPI SPFD inspector member.
-
- 1.6 DELIVERY, STORAGE, AND HANDLING
-
- A. Provide materials packaged in the manufacturer's
- original, tightly sealed containers or unopened packages,
- clearly labelled with the manufacturer's name, product
- identification, safety information, and batch or lot
- numbers where appropriate. Where materials are covered
- by a referenced specification, the labels shall bear the
- specification number, type and class, as applicable.
-
- B. Store materials out of the weather and out of direct
- sunlight in locations where the temperatures are within
- the limits specified by the manufacturer.
-
- 1.7 PROJECT CONDITIONS
- NOTE ** Normally safety procedures are the responsibility
- of the contractor. For more information about
- polyurethane foam see SPI Bulletin AX-119,
- "MDI-Based Polyurethane Foam Systems: Guidelines
- for Safe Handling and Disposal."
-
- A. Comply with the manufacturer's instructions and
- recommendations as to handling and safety procedures.
-
- PART 2 PRODUCTS
-
- 2.1 MANUFACTURERS
-
- A. Provide products manufactured by Foam Enterprises, Inc.,
- 13630 Water Tower Circle, Minneapolis, MN 55441. ASD.
- Tel: (800) 888-3342. Fax: (612) 559-0945.
-
- B. Substitutions are not acceptable.
- NOTE ** Delete paragraph above or below. Edit Section
- Number as required for project.
-
- C. Submit requests for substitutions in accordance with
- provisions of Section 01600.
-
- 2.2 MATERIALS
- NOTE ** Most published data is run on laboratory produced
- samples, not in-place material. The thickness of
- polyurethane foam sprayed, number of passes,
- temperature of substrate, ambient temperatures,
- etc. have a pronounced effect on all properties.
- Verify the following values for Foam Industries'
- product in-place.
-
- A. Foam: Sprayed-in-place two-component closed-cell
- polyurethane made by combining an isocyanate (A)
- component with a polyol (B) component, with the following
- physical characteristics:
- 1. Density in place, when tested in accordance with ASTM
- D 1622: ___ lb/cu ft (___ kg/cu m).
- 2. Compressive Strength, when tested in accordance with
- ASTM D 1621: ___ psi (___ Pa), minimum.
- 3. Closed Cell Content, when tested in accordance with
- ASTM D 2856: ___ percent, minimum.
- 4. Thermal Conductivity ("K"), when measured in
- accordance with ASTM C 177 or C 518: _____.
- NOTE ** From a fire safety standpoint, polyurethane foams
- can be used safely. It is important, however, that
- all persons associated with the design,
- fabrication, storage and installation understand
- the materials and environments involved.
- NOTE **
- NOTE ** Polyurethane foam insulation is combustible and
- should be treated as such. Flame spread ratings
- provided for polyurethane products using small
- scale tests are not intended to reflect the hazards
- presented by this or any other materials under
- actual fire conditions. Care must be taken to
- ensure that the foam is not exposed to heat or
- flame.
- 5. Flame Spread Index, when tested in accordance with
- ASTM E 84: Less than 75.
- 6. Smoke Developed Index, when tested in accordance with
- ASTM E 84: Less than 450.
-
- B. Primers: As recommended by the manufacturer of the spray
- foam materials specified.
- NOTE ** Enter a description of the vapor retarder below. A
- vapor retarder is always required for cold-storage
- facilities, due to the increased vapor pressure
- between outside and inside and the damage that
- condensation can do to the insulation.
- NOTE **
- NOTE ** The following items must be considered when
- choosing a vapor retarder:
- NOTE ** 1. Perm rating required.
- NOTE ** 2. Surface preparation required.
- NOTE ** 3. Adhesion of all systems components.
- NOTE ** 4. Foam manufacturer's recommendations.
- NOTE ** 5. Environment in which it is to be used.
-
- C. Vapor Retarder: Fluid-applied coating, _____________.
- 1. Moisture Vapor Transmission: 0.01 perm or less, when
- tested in accordance with ASTM E 96, Method D.
- NOTE ** Consult the applicable building code to determine
- whether a thermal barrier (fire resistive) is
- required over polyurethane foam exposed on the
- interior of the building. In some cases, a thermal
- barrier is not required in cold storage facilities.
- Typically, the minimum thermal barrier is a
- material that constitutes 15 minutes of fire
- protection for the foam. Materials that have been
- used include sprayed cementitious or fiber material
- (such as fireproofing) and gypsum board.
- NOTE **
- NOTE ** Consider the following items in the selection of a
- thermal barrier:
- NOTE ** 1. USDA (food contact) and building code
- requirements.
- NOTE ** 2. Adhesion to the spray polyurethane foam.
- NOTE ** 3. Environment in which it is to be used.
- NOTE ** 4. Aesthetic qualities.
- NOTE ** 5. Ease of maintenance.
-
- D. Thermal Barrier: Sprayed or fluid-applied coating,
- _____________.
- 1. Fire Resistance: 15 minute rating.
-
- E. Insulation Boards: Type, size, and thickness as
- required; stagger joints of multiple layers.
-
- F. Flashings and Waterproof Coverings for Expansion Joints:
- Compatible with the foam and coating systems and as
- recommended by manufacturer.
-
- G. Other Materials Used in System: Selected for
- compatibility with insulation materials and as
- recommended by the manufacturer; including, but not
- limited to, adhesives, sealing and caulking compounds,
- metal flashings, vents and drains.
-
- PART 3 EXECUTION
-
- 3.1 GENERAL
-
- A. Comply with the instructions and recommendations of the
- foam and coatings manufacturers.
-
- B. Familiarize all installers with correct and safe
- application and handling procedures:
- 1. See SPI Bulletin AX- 119, "MDI-Based Polyurethane
- Foam Systems: Guidelines for Safe Handling and
- Disposal."
- 2. Refer to appropriate Materials Safety Data Sheets
- (MSDS) for additional safety information.
-
- 3.2 DESCRIPTION OF INSULATION AND SEQUENCE OF CONSTRUCTION
- NOTE ** The following is an example of the sequence of
- installation of foam insulation in a new
- construction application. Edit as required for
- project.
- NOTE **
- NOTE ** Specify the foam thickness below. The thickness
- should be sufficient to provide the thermal
- resistance required and to prevent condensation.
- Factors such as exterior temperature, facility
- temperature, and humidity should be considered to
- determine the final thickness of the insulation.
-
- A. Due to the need for coordination with installation of
- other building components, the installation of insulation
- cannot be accomplished in a single operation. Sequence
- installation as follows:
- NOTE ** Cooler floors (above freezing) may not need to be
- insulated.
-
- B. Freezer Floors: Insulation thickness of ____ inch (____
- mm).
- NOTE ** The ultimate load capacity of the spray
- polyurethane foam insulated floor is dependent on
- the thickness and compressive strength of the
- insulation and strength of the concrete wearing
- slab. The concrete wearing slab is placed directly
- on the sprayed polyurethane foam and slip sheet.
- The concrete wearing slab over spray polyurethane
- foam insulation must have a strength of at least
- two (2) times the long-term load factor estimated
- for the facility, allowing for point loading of
- racks.
- NOTE **
- NOTE ** Reinforce all wearing floors subject to truck
- traffic and/or heavy loadings. Where contraction
- joints are provided in such floors. incorporate
- slip rods, tongue-and-groove or equivalent
- reinforcing at the joint to compensate for any
- vertical movement between the slabs.
- NOTE ** All freezer floors should be vented and/or heated.
- A heat source must be provided under the insulation
- in all areas that are designed to operate below
- 32EF. This may be in the form of ducts to
- circulate warm air, pipes for warm fluid, or
- electric heating cables. The capacity of the heat
- supply must be sufficient to replace the heat that
- is lost to the cold room. A thermocouple should be
- installed to allow monitoring of under-floor
- temperature during operation of the facility. The
- design of the subgrade heating system should be
- based on local soil conditions and the thermal
- conductivity of the sprayed polyurethane foam
- insulation system (BTU/hr sq ft F).
- 1. Apply vapor retarder and sprayed foam insulation to
- base of columns.
- 2. Install heated mechanical equipment and vent pipes.
- 3. Pour base slab (recess to allow for thickness of
- insulation).
- 4. Allow new concrete to cure a minimum of 28 days
- before applying vapor retarder.
- 5. Apply vapor retarder and sprayed foam insulation.
- 6. Secure slip sheet and pour concrete wearing slab.
- NOTE ** Hollow walls between two freezers are not
- recommended.
- NOTE **
- NOTE ** Walls which separate a low-temperature space from a
- heated space require more insulation than would be
- used on walls that separate cold spaces from each
- other.
-
- C. Walls: Insulation thickness of ____ inch (____ mm).
- 1. Complete all penetrations through walls before vapor
- retarder and sprayed foam are applied.
- NOTE ** Suspended ceilings should have sufficient working
- space above and should be vented.
- NOTE **
- NOTE ** Hanger rods should be insulated and spaced to
- provide safe support for anticipated loads.
- NOTE **
- NOTE ** Where the ceiling finish in front of the
- refrigeration blowers is subject to wet-drying and
- freeze-thawing, it is recommended that a deflector
- the width of the coil be attached to the surface in
- this area.
-
- D. Ceilings: Insulation thickness of ____ inch (____ mm).
- 1. Insulate hanger rods for distance of 4 times the
- ceiling insulation thickness measured from the
- outside face of the insulation.
-
- E. Doors: Insulation thickness of ____ inch (____ mm).
-
- F. Complete all insulation and thermal barrier work prior to
- activation of refrigeration equipment.
-
- 3.3 PREPARATION
-
- A. Ferrous Metal: Sandblast iron and steel surfaces which
- are not primed, shop painted, or otherwise protected in
- accordance with SSPC SP-6. Remove loose rust and unsound
- primer from shop primed iron and steel surfaces by
- scraping or wire brushing.
-
- B. Non-Ferrous Metal: Clean galvanized metal, aluminum, and
- stainless steel surfaces as recommended by the
- manufacturer of materials to be applied.
-
- C. If metal surface is free of loose scale, rust, weathered
- or chalking paint, clean using compressed air jet, vacuum
- equipment, and hand or power broom to remove loose dirt.
- Remove grease, oil and other contaminants using proper
- cleaning solutions.
-
- D. New Concrete: Allow to cure for twenty-eight (28) days
- prior to the application of primer or foam.
-
- E. Previously Painted Surfaces: Remove all paint.
-
- F. Remove loose dirt, dust and debris by using compressed
- air, vacuum equipment or brooming. Remove oil, grease,
- form release agents, laitance, and other contaminants
- using proper cleaning solutions. Do not wash wood or
- porous materials with water.
-
- G. Grout, tape, or calk all joint openings that exceed 1/4
- inch (6 mm) in width.
-
- H. Prime all metal as recommended by manufacturer.
-
- I. Prime all concrete surfaces.
- NOTE ** Plywood should be exterior grade not less than 1/2
- inch thick, nailed firmly in place.
- NOTE **
- NOTE ** Priming is required to minimize moisture absorption
- and eliminate potential adhesion problems.
-
- J. Prime all untreated and unpainted wood surfaces with an
- exterior grade primer.
-
- 3.4 VAPOR RETARDER INSTALLATION
-
- A. Apply vapor retarder in accordance with the
- manufacturer's specifications and instructions.
-
- B. Apply vapor retarder to all surfaces to be insulated in a
- continuous film across corners and junctions.
- 1. Extend 6 inches beyond where the insulation will end.
- 2. Metal surfaces do not require vapor retarders, but
- seams and penetrations must be sealed.
-
- C. Allow vapor retarder to cure before the sprayed foam
- insulation is applied.
-
- D. Repair damage and defects to the vapor retarder prior to
- the application of foam insulation.
-
- E. Keep vapor retarder free of moisture, frost, debris, and
- contaminants that might impair the adhesion of the foam
- insulation.
-
- 3.5 FOAM APPLICATION
-
- A. Do not begin application of foam until all preparation
- requirements have been completed.
-
- B. Do not apply foam when the temperature is below or the
- humidity is above that specified by the manufacturer for
- ambient air and substrate.
-
- C. Apply foam in accordance with the manufacturer's
- specifications and instructions.
-
- D. Apply foam with minimum pass thickness of 1/2 inch (13
- mm) and maximum pass thickness of 1 inch (25 mm), unless
- greater pass thickness is acceptable to foam
- manufacturer.
-
- E. Apply foam uniformly over the entire surface with a
- tolerance of plus 1/4 inch per inch (6 mm per 25 mm) of
- thickness minus 0 inch (0 mm), except where variations
- are required to conform to building structure or to
- insulate around projections, door jambs, and corners.
-
- F. Penetrations Through Insulation:
- 1. Insulate conduits, pipes less than 2 inches in
- diameter, and hanger rods that project through the
- insulation with spray foam for a distance of four
- times the regular wall insulation thickness.
- 2. Insulate columns and pipes larger than 2 inches in
- diameter with spray foam for a distance of 4 feet
- from the wall, ceiling or floor.
- 3. For insulated metal ducts add spray foam insulation
- of one half the thickness of the wall or ceiling
- insulation.
-
- G. Complete the full thickness of foam in any area prior to
- the end of each day. If the full thickness is not
- completed in one day, prepare the surface in accordance
- with the recommendations of the manufacturer.
- NOTE ** Delete the following paragraph if the thermal
- barrier is not a coating to be adhered to the foam.
-
- H. Finish the final sprayed foam surface to a finish
- suitable for application of the thermal barrier. Remove
- unsuitable surfaces and reapply to an acceptable surface.
-
- I. Allow the foam surface to cure sufficiently.
-
- J. Repair damage and defects to the surface prior to the
- thermal barrier application.
-
- 3.6 THERMAL BARRIER APPLICATION
-
- A. Apply thermal barrier over entire surface of foam.
-
- B. Allow thermal barrier to cure. Inspect for defects and
- repair defects prior to subsequent coats.
-
- END OF SECTION
-