TRI-BUILT 483 Polyester Reinforcing Fabric, 4 in. x 300 ft Roll, White - image 1

TRI-BUILT 483 Polyester Reinforcing Fabric, 4 in. x 300 ft Roll, White

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TRI-BUILT 483 Polyester Reinforcing Fabric, 4 in. x 300 ft Roll, White


TRI-BUILT 483 Polyester Reinforcing Fabric is a white polyester mesh supplied on a 4 in. x 300 ft roll, one roll per selling unit. It reinforces sealant and coating systems at seams, flashings and repairs. Embed it into wet sealant or mastic per the system manufacturer's instructions.


Key Features:

  • 4 in. x 300 ft: 4 in. wide roll yields 300 ft of reinforcement per roll.
  • Polyester mesh: Polyester construction adds tensile strength to sealant and coating details.
  • White fabric: White fabric is easy to see during wet embedding for full saturation.
  • ASTM tested: Listed to ASTM D-5034, D-3787 and D-1117 test standards.
  • Lightweight roll: Roll weighs about 3 lb for easy handling on the roof.

Specifications Table:

Specification Details
Brand TRI-BUILT
Sell unit 1 roll, 4 in. x 300 ft
Product line TRI-BUILT 483 Polyester Reinforcing Fabric
Profile / style Reinforcing fabric / mesh
Color White
Dimensions 4 in. x 300 ft
Material Polyester
Approvals ASTM D-5034; ASTM D-3787; ASTM D-1117
Weight 3 lb per roll
Intended use Reinforcement for sealant, mastic and coating systems

Coverage & How Much You Need:

One roll provides 300 linear ft of 4 in. wide reinforcement; measure the total length of seams and flashing details and add waste for laps and cuts.

Fit and Compatibility:

Designed to be embedded into compatible TRI-BUILT or other manufacturer's sealants, mastics and coating systems. Always confirm the host sealant or coating is rated for polyester reinforcing mesh.


Frequently Asked Questions (FAQ):

Q: What is included?
A: One roll of 483 polyester reinforcing fabric, 4 in. wide by 300 ft long.


Q: What is it used for?
A: It reinforces sealant and coating systems at seams, flashings, splits and repairs.


Q: How is it installed?
A: Embed the fabric into a wet layer of compatible sealant or mastic, then coat over it per the system instructions.


Q: How far does one roll go?
A: 300 linear ft of 4 in. wide fabric per roll; add extra for laps and cuts.


Q: What standards is it tested to?
A: ASTM D-5034, ASTM D-3787 and ASTM D-1117 as listed.


Expert Verdict — Reviewed by the SuperArbor Pro Desk

Polyester reinforcing mesh is the backbone of long-lasting flashing and seam repairs: apply a base coat of compatible mastic, work the fabric in fully saturated with no dry pockets or wrinkles, then top-coat over it. Choose a 4 in. width for standard seam and flashing details and wider fabric only where the manufacturer's system calls for it.

Follow the host sealant or coating's safety instructions when embedding fabric; work on a clean, dry surface and observe roof safety practices.


Order the TRI-BUILT 483 polyester reinforcing fabric 4 in. x 300 ft roll for stronger seam and flashing repairs.

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Subject to Approval & Availability
All orders are reviewed before fulfillment. You are not charged until your order is approved and ready to ship — and you may cancel at any time before that at no cost.

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