Recommended Uses: Stir material well before using.
For application to all wood surfaces, where a reduction of surface burning characteristics is required to comply with building code requirements.
Unit A, 21/F, KP Tower, 93 King’s Road, North Point, Hong Kong(852) 2911 0103
Burn Barrier 133A
Burn Barrier #133A Class “B” Water Base Varnish
Burn Barrier No. 133A is a water base, fire retardant polyurethane varnish, with a semi-gloss sheen. It is designated for use on all new or previously coated wood surfaces (except floors). The varnish will not leach or turn white on aging or washing.
Performance Information:
Class “B” fire rated on wood when applied in two coats at 450 sq.ft./gallon. Dries by water evaporation.
Does not leach on exposure to high humidity or water. No fire hazard during application or drying. The coating is somewhat thermoplastic. Precaution must be taken when two coated surfaces are touching each other, to prevent sticking and blocking.
Characteristics:
| Finish | Clear |
| Spreading Rate | 1st. coat, 450 sq.ft./gl. 2nd. coat, 450 sq.ft./gl. |
| [Aggregate (total) coverage: 356 sq. ft./gl.] | |
| Volume Solids | 30% |
| Weight Solids | 35% |
| Wet Film Thickness Per Coat | 3.6 mil |
| Dry Film Thickness Per Coat | 1.1 mil |
| Application Temperature (Surface & air) | 60F minimum |
| Drying time @ 77F & 50% RH | To touch 15 to 30 minutes Top coat 30 minutes Handle 60 minutes |
| Type of Cure | Water Evaporation & coalescence |
| Flash Point | None to boiling |
| Reducer/Cleaner | Water |
| VOC | 0.20 lbs./gl. (24 g/L) |
| 2nd. coat, 450 sq.ft./gl. | |
| Shelf Life | 12 months (unopened) |
| Weight per gallon | 8.95 lbs. |
| Shipping per gallon (4 gallons) | 40 lbs. |
| Shipping per gallon (5 gallons) | 48 lbs. |
| Application | Brush, foam brush, conventional or airless spray. |
Surface Preparation:
Surface preparation should be carried out according to good painting practices. All dirt, grease, oil, wax, rust, and other foreign matter must be removed. May be applied to previously coated surfaces in good condition. Glossy surfaces must be dulled with sandpaper or steel wool. All sanding, filling of nail holes, etc. must be completed prior to the application of No. 133A.
Fire Hazard Classification:
Flame spread rating Class “B” when applied to wood surfaces. When tested in accordance with ASTM E-84 (NFPA 255, ANSI/UL 723 and UBC 8-1), the coating obtained the following fire hazard classification;
| Coating System Details Sealer – None Base Coat No. 133A Applied at 450 sq.ft/U.S. gl. (11.0 m /L) Top Coat No. 133A applied at 450 sq.ft./US gl. (11.0 m /L) | (When Applied to Douglas Fir)
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Packaging: Standard packaging, 1 gallon, 5 gallon pails.
CAUTION! Do not take internally. Close container after each use.
KEEP OUT OF REACH OF CHILDREN. Protect from freezing