Exceptional sag resistance — holds 13–15 mm on vertical surfaces
Filling voids, cracks and joints in concrete
Rayson PatchBond TX80
Rayson PatchBond TX80 is a two-component, solvent-free thixotropic epoxy adhesive and repair compound with exceptional sag resistance that bonds and fills on vertical, overhead and even mat-damp concrete surfaces.
Best for
Best for non-sag repairs, crack and joint filling, and structural bonding on vertical and overhead surfaces — including damp concrete.
Real product · Interactive depth view Rayson PatchBond
Product system Rayson PatchBond TX80
Part A 4 or 8 kg / Part B 2 or 4 kg per set RY-TDS-902
Rayson PatchBond TX80 has one clearly defined, verifiable job in the coating system.
Rayson PatchBond TX80 is a two-component, solvent-free thixotropic epoxy adhesive and repair compound with exceptional sag resistance that bonds and fills on vertical, overhead and even mat-damp concrete surfaces. Best for non-sag repairs, crack and joint filling, and structural bonding on vertical and overhead surfaces — including damp concrete.
Moisture-tolerant — bonds to mat-damp concrete
Bonding metal profiles and fixtures onto vertical surfaces
Hardens without shrinkage; impermeable to liquids and water vapour
Repairs to fibre cement, stone, ceramics, wood, brick and masonry
Repair vertical and overhead concrete—without sag.
A moisture-tolerant thixotropic epoxy that bonds, fills and holds its shape on vertical, overhead and damp concrete.
A controlled route to applying Rayson PatchBond TX80.
This sequence supports early planning. It does not replace the current Technical Data Sheet, approved method statement or project-specific technical review.
- 01
Inspect and prepare the substrate
Concrete, including wet or mat-damp surfaces (no standing water)
- 02
Prepare the material as specified
Two pre-weighed parts, mix ratio 2:1 (A:B) by weight; mix with a low-speed drill and paddle for at least 3–5 minutes, avoiding aeration; pot life up to 30 minutes at 28 °C
- 03
Apply with the correct tools
Recommended methods: Spatula, Trowel or notched trowel, Gloved hand application. Confirm coat count and thickness for the project.
- 04
Protect through the required cure
Protect the applied surface and confirm the required cure before returning it to service.
Coating system cutaway
Every layer has a job—from prepared substrate to service surface.
This diagram explains a typical system position, not a fixed specification. Primer, body coat, finish, thickness and detailing must be confirmed for the project.
Position in the system Standalone coating
Rayson PatchBond TX80 serves as the standalone coating. Confirm the complete build-up against the substrate, exposure and project requirements.
Related system products
Review primers, body layers, finishes or specialist components connected to this product.
- Reinstated surface / subsequent coatingSelected for the repair scope and subsequent system
- Rayson PatchBond TX80Standalone coating · Epoxy
- Correctly prepared substrateConcrete, including wet or mat-damp surfaces (no standing water)
Four project facts for faster system screening.
These current product figures support early selection. Confirm the final build-up, quantity and application conditions against the Technical Data Sheet and site conditions.
- Coverage
- Coverage
- Mixing & working time
- Mixing
- Drying & curing
- Curing
- Pack configuration
- Pack
Approximately up to 1.90 kg/m² per mm of thickness (theoretical, subject to conditions and porosity)
Two pre-weighed parts, mix ratio 2:1 (A:B) by weight; mix with a low-speed drill and paddle for at least 3–5 minutes, avoiding aeration; pot life up to 30 minutes at 28 °C
Refer to the Technical Data Sheet
Part A 4 or 8 kg / Part B 2 or 4 kg per set
Confirm the substrate and real service environment before specifying.
Choose it when
- Filling voids, cracks and joints in concrete
- Bonding metal profiles and fixtures onto vertical surfaces
- Repairs to fibre cement, stone, ceramics, wood, brick and masonry
- Non-sag repair mortar on vertical and overhead faces
Relevant applications
Relevant industries
Choose something else when
- Minimum substrate temperature 10 °C; curing between +10 °C and +30 °C
- Layer thickness when bonding vertical metal profiles must not exceed 5 mm
- Bonded vertical elements must be propped for at least 12 hours
- Substrate may be mat-damp but must have no standing water
- Large horizontal floor reinstatement — Rayson MortarBond EM90 is the better tool
- Substrates with standing water or active water ingress
- Applications below 10 °C substrate temperature
- Movement joints requiring a flexible sealant — cured epoxy is rigid
Other Rayson products to evaluate
These links continue the comparison; they are not automatic substitutes. Confirm the substrate, exposure and complete build-up before selection.
Substrate requirements+
- Concrete, including wet or mat-damp surfaces (no standing water)
- Fibre cement, hard natural stone and ceramics
- Wood, polyester, epoxy and glass
- Bricks, mortar and masonry
Technical documents and project support
Ready to specify Rayson PatchBond TX80? Give Rayson the site conditions.
Send the area, substrate condition, expected traffic or exposure, required finish and programme. The technical team can help review the system build-up and estimated quantity.
What to know before specifying Rayson PatchBond TX80.
Will it sag on a wall or ceiling?
No — the thixotropic body holds around 13–15 mm on vertical faces at 28 °C without slumping, which is what it is designed for.
Can it be applied to damp concrete?
Yes, to mat-damp concrete with no standing water — the formulation is moisture-tolerant and builds durable bonds on wet substrates.
Why must mixing avoid aeration?
Whipped-in air weakens the compound and leaves voids in the repair. Mix with a low-speed drill for 3–5 minutes rather than a fast one.
How long must bonded fixtures be supported?
Prop vertical bonded elements for at least 12 hours while the epoxy develops handling strength.
When has it fully cured?
Test values reference 7-day curing; check the full cure schedule with our technical team for load-critical work.
TX80 or EM90 — which repair product do I need?
TX80 for vertical, overhead, damp or bonding work where sag resistance matters; EM90 for horizontal floor patches needing maximum compressive strength under traffic.
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