| EDITORIAL NOTE:
This specification standard is specifically for HUD sponsored projects. It contains several requirements that are more stringent than any other specification. Note especially the bold face type that indicate the HUD-specific requirements of this specification. |
Department of Housing and Urban Development
Use of Materials Bulletin No. 101
(HUD UM101)
Effective Date: January 3, 1995
ASSISTANT SECRETARY FOR HOUSING
FEDERAL HOUSING COMMISSIONER
TO: DIRECTORS, HOUSING DEVELOPMENT DIVISION
SUBJECT: HUD BUILDING PRODUCT STANDARDS AND CERTIFICATION PROGRAM FOR EXTERIOR WALL INSULATION AND FINISH SYSTEMS
Members of the HUD staff processing cases and inspecting construction, shall use this information in determining acceptability of the subject products for the use indicated.
This bulletin should be filed with bulletins on Special Methods of Construction and Materials as required by prescribed procedures. Additional copies may be requisitioned by the Field Offices.
The technical description, requirements and limitations expressed herein do not constitute an endorsement, approval or acceptance by the Department of Housing and Urban Development (HUD/FHA) of the subject matter, and any statement or representation, however made, indicating approval or endorsement by the Department of Housing and urban Development is unauthorized and false, and will be considered a violation of the United States Criminal code 18, U.S.C. 709.
Any reproduction of this Bulletin must be in its entirety and any use in sales promotion or advertising is not authorized.
Subject to good workmanship, compliance with applicable codes, and the methods of application listed herein, the products described in this bulletin may be considered suitable for HUD housing programs, including Housing for the Elderly and Care-Type Housing.
The eligibility of a property under these programs is determined on the property as an entity and involves the consideration of underwriting and other factors not indicated herein. Thus, compliance with this bulletin should not be construed as qualifying the property as a whole, or any part thereof, as to its eligibility.
The method of application for the products listed herein are considered a part of the HUD minimum Property Standards and shall remain effective until this bulletin is canceled or superseded.
HUD Building Product Standards and Certification Program for Exterior Wall Insulation and Finishing Systems
GENERAL – ADMINISTRATIVE AND PROCEDURES
This certification program shall be administered by organizations that qualify under the Administrator Qualifications and Procedures of the HUD building Product Standards and Certification Program, described in 24 CFR 200.935, except as modified by the provisions of this Use of Materials Bulletin No. 101. Copies of these Administrator Qualifications and Procedures for the HUD Building Products standards and Certification Program may be obtained from:
Office of Manufactured Housing & Regulatory Functions
Department of Housing & Urban Development
451 7th Street, SW
Attn: Mail Room B-133
Washington, DC 20410
The procedures for carrying out the certification program for exterior wall insulation and finish systems shall be in accordance with 24 CFR 200.935 and with this Use of Materials Bulletin (UM) which supplements 200.935 by providing that:
- The certification label containing the Administrator’s mark shall be permanently affixed on the package or container of base and finish coating materials.
- The following additional information shall be on the certification label:
- The manufacturer’s name.
- The manufacturer’s statement of conformance to UM 101.
- The Administrator shall visit the manufacturer’s or sponsor’s facility every 6 months, to assure that the initially accepted quality assurance procedures are being followed. At least every four years, the Administrator also shall have the exterior wall insulation and finish systems tested in an approved laboratory to assure that the original performance is maintained.
STANDARDS:
All exterior wall insulation and finish systems shall be initially tested in conformance with the requirements in Table 1: Requirements for Exterior Wall Insulation and Finish Systems.
| Material Requirement (if used) | Values | Product or Design Specification |
| Fiber cement board | Compliance | ASTM C-11861-9l |
| Polystyrene foam insulation board | Compliance | UM 7 la 2 -94 |
| Density, minimum | 0.9 lbs/cu. ft | |
| Thickness, minimum | 2.0 inches | |
| Fiberglass mesh, minimum | 120 lbs/lin.inch | EIMA 105.013 -95 |
| Standard grade | 4.0 oz/sq.yd. | |
| Moderate grade | 12.0 oz/sq.yd. | |
| High grade | 14.0 oz/sq.yd. | |
| Caulks and sealants, minimum | Type S Grade NS | ASTM C-920-87 |
| (Silicone) | 20 year warranty | |
| Portland cement | Type I,II,-I or II | ASTM C-150-94 |
| Finish pigments | UV stable 2000hrs
No fading No Yellowing± 1 maximum |
ASTM G-26-93Type A
ASTM D-1925-93 |
Note: No failure in the adhesive, base coat or finish coat. Minimum 5 psi bond strength after accelerated weathering and freeze-thaw cycling.
- American Society for Testing and Materials (ASTM) 1916 Race Street, Philadelphia, PA 19103
- Use of Materials Bulletin (HUD).
- Exterior Insulation Manufacturers Association (EIMA) 2759 State Road 580, Suite 112, Clearwater, FL 34621.
- American Society of Civil Engineers (ASCE) 345 East 47th Street, New York, NY 10017
- Council of American Building Officials (CABO), 5203 Leesburg Pike, Falls Church, VA 22041.
- R. J. Kenny & Association, (EAUTC), P O Box 1748, Plainsville, MA 02762.
Every four years, the Administrator shall have a simulated sample 2′ x 4′ panel tested in accordance with the following quality assurance requirements:
| System Requirements | Values | Test Method |
| Surface impact | no damage with 30 lb weight at 6 ft. | ASTM E-695-79 |
| Fungus resistance | no growth after 42 days | ASTM D-3273-93 |
| Freeze-thaw | no cracks 10 cycles | EIMA 101.01-95 |
| Water Penetration | ||
| 15 min. 80% of design | no penetration | EIMA 101.02-95 |
| Adhesion | no failure (See note) | EIMA 101.03-95 |
| Thermal conductivity | compliance | CABO Model Energy code 19934 |
| Point Impact | Perfo Test initial and periodic values | EAUTC5 sec.3.3.3-89 |
INSTALLATION:
- The installation of exterior wall insulation and finish systems (EIFS) shall be in accordance with the manufacturer’s installation instructions. The system shall be installed by applicators that have been approved by the manufacturer.
- The EIFS systems shall be delivered to the job site in packages with the name of the manufacturer, address, installation instructions, statement of compliance to UM 101 and the manufacturer’s warranty provisions.
- The substrate surface shall be determined by the manufacturer, to be sound, free of release agents or other residues, and in all other ways suitable for the application of the EIFS system to the substrate.
Gypsum sheathing shall not be used as a substrate. - No additives, or materials of any kind, such as binders, antifreeze agents, accelerators, fillers, etc., except specified amounts of clean water, shall be allowed unless specifically approved by the manufacturer.
- The ambient temperature shall be 40°F or greater and rising at the time of application but not greater than 100°F and shall remain so for at least 24 hours thereafter. The manufacturer shall be responsible for making any disputed determinations.
- The adhesive (based coat) used to adhere the insulation board to the substrate shall be of a suitable thickness so as not to have the ribbons of adhesive thinner than 1/16″ of an inch. It is recommended that two applications (one to embed the mesh and the second to recoat) be applied to achieve 1/16″ thickness. After allowing at least 24 hours drying time, apply the base coat to the surface and immediately embed in the reinforcing glass mesh with a stainless steel trowel. The mesh shall be lapped at least 2 1/2″ at the seams and shall not be visible beneath the surface of the base coat. The heavy duty mesh shall only be butted together at the seams and then a strip of standard mesh shall be applied over the joint area. Heavy duty mesh recommended for areas of light impact at ground floor elevations or abnormal stress situations.
- The polystyrene board shall not be used in contact with chimneys or other surfaces which could heat the board to a temperature greater than 150°F. Provide clearance from heat sources in conformance with the National Fire Protection Association, publication NFPA No. 89M.
- The polystyrene insulation board shall be coated with 1/16″ thick EIFS adhesive (basecoat), reinforcing fiberglass mesh, and the finish coat so that no portion is exposed. This requirement shall be carefully observed at the base of the insulation, around all doors and windows, around all wall penetrations.
- All areas where the EIFS system joins other materials or terminates shall be protected from moisture intrusion with a product or method specified by the manufacturer.
- All joints shall be made so that the caulking and sealing cements can be removed and replaced.
- No sealant shall be applied to the system until the EIFS system has been previously cured for 14 to 21 days. Backer rod may be installed to prevent water intrusion during curing.
MAINTENANCE:
The manufacturer shall provide maintenance recommendations in order to comply with the warranty provisions of this UM. Periodic inspections shall also be recommended for maintaining the durability and integrity of the EIFS system.
INSPECTIONS:
The owner shall be responsible for inspections of EIFS system installations of 5000 sq. ft. or more and shall be made during and upon completion of the construction. Reports of the inspection shall be made to the owner. These reports shall include:
- The coverage of the finish coat per sq. ft. for a given volume of finish.
- The minimum thickness of the base and finish coatings.
- That the fiberglass mesh is installed properly around joints and insulation.
- All penetrations, including windows, flashing, etc., are sealed.
- There is a caulks and sealants continuity evaluation with special concerns on maintenance recommendations to maintain warranty provision of the seal arts.
MANUFACTURER’S WARRANTY.
The manufacturer shall warrant their exterior wall insulation and finish system including any caulks and sealants, for twenty years against faulty performance. The warranty shall include correction of delamination, chipping, denting, peeling, blistering, flaking, bulging, unsightly discoloration, or other serious deterioration of the system, such as the intrusion of water through the walls, or failure of the system’s surface materials. Should any of these defects occur, the manufacturer shall make a pro-rata allowance for replacement or pay the owner the amount of the allowance. The manufacturer shall not be liable for damages or defects resulting from misuse, natural catastrophes, or other causes beyond the control of the manufacturer.
The contractor or owner shall provide a statement to the owner that the product has been installed in compliance with requirements except as modified by the Bulletin, and that the manufacturer’s warranty does not relive the builder, in any way, of responsibility under the terms of the Builders Warranty required by the National Housing Act, or under other housing programs.
ADMINISTRATORS:
Qualified organizations interested in becoming Administrators under the HUD building Products Standards and Certification Program for Exterior Wall Insulation and Finish Systems should submit their request to HUD Headquarters, Office of Manufactured Housing and Regulatory Functions, 451 7th Street, SW, Attn: Mil Room B-133, Washington, DC 20410-8000.
HUD Field Offices will maintain a file of all directories furnished by the Administrators and accept only products listed in the directories. The following Administrators have been accepted by HUD as qualified to validate Exterior Wall Insulation and Finish Systems under Use of Materials Bulletin No. 101.
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