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IS-300

Quick Overview

Designed for inside 90º corners where speed and strength are needed, and where large framing irregularities need to be overcome.
IS-300 - Case of 50-8' Sticks, 400lf
$120.01

Availability: In stock

[ Overview ]

3”w (76mm)

COLOR CODE RED

IS-300 is specifically designed for inside 90º corners where there are large framing and drywall irregularities. IS-300, a paper-faced composite corner bead from Strait-Flex, beautifully finishes inside 90º corners and is the second most cost-effective inside stick corner bead on the market. This 3” corner bead applies with all-purpose compound and features a pre-finished laminated center section ensuring a clean sharp corner. The laminated center eliminates the risk of damage from a taping knife, will not shrink, and will not fuzz up during sanding. The bead’s outer edge features a diamond punch pattern for easier feathering, faster drying, and the highest bonding strength. The backing of IS-300 is Strait-Flex’s patented composite material creating an incredibly strong corner.

  • Vertical or horizontal inside 90º corners.  
  • The most cost-effective inside corner bead on the market today.
  • Diamond-punched 94 lb. paper edging allows for easier feathering, faster drying, and the highest bonding strength. Also guarantees an even lay-down of the paper, providing maximum adhesion with no rippling or blistering.
  • Clean installation. 
  • Composite material provides a tough, durable corner. 
  • PUR-laminated center ensures perfect corners without paper fuzz-up during finishing and sanding.

[ Installation ]

Cut Strait-Flex IS-300 to measured length.

For vertical corners, cut 1/4” short of floor.

Apply all-purpose joint compound with Mud-Pro2 (compound applicator) to corner bead; or apply compound to inside corners with a 5” or 6” taping knife.

Press corner bead into wet compound by hand or use Strait-Flex’s IS-300 Rolling Tool for fastest results.

Adjust if necessary to create a straight line.

Wipe down with knife with additional pressure to the outer edge of corner bead.

Immediately apply a light skim coat of joint compound and let dry. Apply final coat, let dry, and sand.

REPAIRS OVER PAINTED SURFACES

Strait-Flex recommends the use of Strait-Flex Super-Bond or latex paint, mixed with all-purpose joint compound to enhance bondability.

Additional Information

Bullet Points No
Instructions for Use

Cut Strait-Flex IS-300 to measured length.

For vertical corners, cut 1/4” short of floor.

Apply all-purpose joint compound with Mud-Pro2 (compound applicator) to corner bead; or apply compound to inside corners with a 5” or 6” taping knife.

Press corner bead into wet compound by hand or use Strait-Flex’s IS-300 Rolling Tool for fastest results.

Adjust if necessary to create a straight line.

Wipe down with knife with additional pressure to the outer edge of corner bead.

Immediately apply a light skim coat of joint compound and let dry. Apply final coat, let dry, and sand.

REPAIRS OVER PAINTED SURFACES

Strait-Flex recommends the use of Strait-Flex Super-Bond or latex paint, mixed with all-purpose joint compound to enhance bondability.

Size 3”w (76mm)
Instructions PDF No
Submittal PDF /media/wysiwyg/straitflex/submtl/Submtl_Sheets_IS300.pdf
Testimonial PDF No
Warranty PDF No