91 PAINT
91-1 General
91-1.01 General
Section 91 -1 includes general specifications for furnishing paint used for highway construction.
91-1.02 Materials
Paint containers must be:
1.New
2.Round
3.No more than 6 gallons in capacity
4.Standard full open head with bails
5.Nonreactive with contents
6.Equipped with compatible gaskets
7.Free of bungholes in the lids
8.Labeled with: 8.1. State Specification number if described 8.2. Manufacturer's name, product number, and batch number 8.3. Date of manufacture 8.4. Precautions required by 8 CA Code of Regs §§ 1501 –1756 and §§ 3200 –3206 concerning the handling and application of paint Paint must:
1.Be manufactured read y for application. Do not add materials such as thinners after manufacture.
2.Be homogenous and free of contaminants.
3.Be smooth. Settled pigment must be soft and easily dispersed before using.
4.Retain the properties that affect its application, adhes ion, and curing for at least 1 year after the date of manufacture.
91-1.03 Construction
Not Used
91-1.04 Payment
Not Used
91-2 Paint for Metal
91-2.01 General
91-2.02 Materials
91-2.02A General
Zinc-rich primer must be on the Authorized Material List for inorganic and organic zinc -rich primers .
91-2.02B Exterior -Grade Latex Paint
Exterior -grade latex paint must be recommended by the manufacturer of the zinc -rich primer. Exterior -grade latex paint must comply with SSPC -Paint 24. No visible color change in the finish coat must occur when tested for 800 hours under ASTM D4587, test cycle 2. The vehicle must be an acrylic or modified acrylic copolymer with a minimum of necess ary additives.
91-2.02C Moisture -Cured Polyurethane Coating
Reserved
91-2.03 Construction
Not Used SECTION 91 PAINT
91-2.04 Payment
Not Used
91-3 Paint for Timber
91-3.01 General
91-3.02 Materials
91-3.02A General
Reserved
91-3.02B Latex -Base Wood Primer
Wood primer must be latex -base paint suitable for priming unpainted wood or exterior woodwork. Wood primer must comply with the MPI detailed performance standards for exterior wood primers and be listed on the MPI approved product list no. 6 for primer, latex for exterior wood.
91-3.02C Latex -Base Paint for Exterior Wood
Latex -base paint for exterior wood must comply with the MPI detailed performance standards for exterior latex paint and must be listed on one of the MPI approved products lists shown in the following table: MPI list no. Category name 10 Latex, exterior flat (MPI gloss level 1) 11 Latex, exterior semi -gloss (MPI gloss level 5) 119 Latex, exterior gloss (MPI gloss level 6) You may use recycled paint. Recycled paint must comply with the MPI detailed performance standards for exterior latex paint and must be listed on one of the following MPI approved products lists: MPI list no. Category name 10RR Latex, recycled (remanufactured), exterior flat (G1) 10RC Latex, recycled (consolidated), exterior flat (G1) 15RR Latex, recycled (remanufactured), exterior low sheen (G 3 -4)
91-3.03 Construction
Not Used
91-3.04 Payment
Not Used
91-4 Miscellaneous Paint
91-4.01 General
Section 91 -4 includes specifications for furnishing paint for materials other than metal or timber.
91-4.02 Materials
91-4.02A General
Reserved
91-4.02B Acrylic Emulsion Paint for Exterior Masonry
Acrylic emulsion paint for exterior masonry must comply with the MPI detailed performance standards for exterior latex paint and must be listed on one of the following MPI approved products lists: MPI list no. Category name 10 Latex, exterior flat (MPI gloss level 1) 11 Latex, exterior semi -gloss (MPI gloss level 5) 119 Latex, exterior gloss (MPI gloss level 6) SECTION 91 PAINT Acrylic emulsion paint may be tinted by using universal or all -purpose concentrates.
91-4.02C 91-4.02F Reserved
91-4.03 Construction
Not Used
91-4.04 Payment
Not Used
Source: California Standard Specifications, 2024 Edition. Pages 1307–1310 of 1,372.