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Fortis AD5105 D4 Fast Cure Polyurethane Adhesive

Fortis AD5105 is a fast timber adhesive for furniture, joinery, cabinetry and general woodworking. Its 10-minute working time and approximately 30-minute clamp time make it ideal for efficient production and assembly of hardwoods, softwoods and timber components.

Information

FORTIS AD5105 is a fast-curing, single-component moisture-curing polyurethane adhesive developed for timber bonding, woodworking, joinery and industrial assembly.

The 100% solids, solvent-free formulation provides high bond strength with a 10-minute working time and approximately 30-minute clamp time under normal conditions. AD5105 develops a slight foaming action during cure, helping the adhesive penetrate minor surface irregularities while maintaining strong substrate contact.

AD5105 is suitable for many hardwoods, softwoods and compatible porous materials. Typical applications include furniture manufacture, cabinetry, joinery, timber assembly, door and window manufacture, shop fitting, repairs and general construction bonding.

The cured adhesive provides excellent resistance to water, heat and changing service conditions. It can also be sanded, painted or stained after cure.

AD5105 cures using moisture from the timber, substrate or atmosphere. At least one bonding surface should contain sufficient moisture for effective cure. Very dry substrates may require light misting with water before assembly.

For best results, surfaces should be clean, tightly fitting and properly clamped during the initial cure. Fortis recommends production trials when bonding unfamiliar timber species or other substrates.

Material

Single-Component Moisture-Curing Polyurethane

Advantages

  • Single-component – no mixing required
  • Fast-curing polyurethane timber adhesive
  • 10-minute working time
  • Approximately 30-minute clamp time
  • 100% solids
  • Solvent and formaldehyde free
  • Suitable for many Australian hardwoods
  • High wet and dry bond strength
  • Slight foaming action during cure
  • Sandable after cure
  • Paintable and stainable
  • Excellent water resistance
  • Excellent heat resistance
  • Suitable for interior and exterior applications
  • Suitable for woodworking, joinery and assembly

Product Application

FORTIS AD5105 is applied directly to one bonding surface. Apply approximately 100–200 g/m² depending on timber porosity, surface condition and the materials being bonded.

AD5105 requires moisture to cure. Timber will normally contain sufficient natural moisture; however, very dry substrates may be lightly misted or wiped with water before adhesive application.

Assemble components within the 10-minute working time and apply sufficient clamping pressure to maintain close contact between the bonding surfaces.

Typical clamp time is approximately 30 minutes at 20°C and 65% relative humidity. Lower temperatures or very dry conditions may extend cure time.

Excess cured adhesive may be sanded before painting or staining.

Always conduct a bonding trial when using unfamiliar timber species, coated surfaces or other materials.

For applications requiring more assembly time, consider Fortis AD5205 with a 20-minute working time or Fortis AD5405 for larger or more complex assemblies requiring extended working time.

Surfaces

FORTIS AD5105 is suitable for bonding a range of timber and compatible porous substrates including:

• Hardwood
• Softwood
• Victorian Ash
• Timber panels
• MDF and particleboard
• Plywood
• Furniture components
• Joinery components
• Selected porous construction materials

Surfaces must be clean and free from dust, oil, grease and other contaminants.

Tight-fitting joints provide the highest bond strength. Ideally, bond gaps should be kept below approximately 0.3 mm.

AD5105 requires moisture to cure and should not be used where both substrates are completely non-porous and no moisture is available.

AD5105 does not bond polyethylene or polypropylene.


Specifications

Feature
Specification
Color
Amber
Viscosity
>4,500 cP @ 20°C
Coverage
100–200 g/m²
Working Time
10 minutes
Clamp Time
30 minutes @ 20°C (65% RH)
Shear Strength Dry (Timber - Vic Ash)
>12 MPa – Victorian Ash (95% wood failure)
Shear Strength Wet (Timber - Vic Ash)
>11 MPa – Victorian Ash (75% wood failure)
Service Temperature
-40°C to 90°C

Pack Sizes

18 kg, 220 kg


FAQs

What is Fortis AD5105?
FORTIS AD5105 is a fast-curing, single-component moisture-curing polyurethane adhesive for timber, woodworking, joinery and general assembly.

How long does AD5105 take to clamp?
Typical clamp time is approximately 30 minutes at 20°C and 65% relative humidity. Temperature, moisture and timber species may affect cure speed.

What is the working time of AD5105?
AD5105 has an approximate working time of 10 minutes under normal conditions.

Can AD5105 bond hardwood?
Yes. AD5105 is suitable for many hardwood species and has demonstrated high wet and dry shear strength on Victorian Ash.

Does AD5105 expand while curing?
AD5105 develops a slight foaming action as it moisture cures. Correct surface preparation and clamping are important.

Can AD5105 be sanded or painted?
Yes. Once fully cured, the adhesive can be sanded and may be painted or stained.


Downloads

Technical Datasheets

Fortis AD5105 Technical Data Sheet

Safety Datasheets

Fortis AD5105 Safety Data Sheet AUS GHS