Information

Fortis AD5205-S is a single-component, moisture-curing structural polyurethane timber adhesive developed for glue lamination and structural wood bonding.

With a working time of less than 20 minutes, AD5205-S provides the assembly time required for larger timber components and laminated sections while maintaining efficient production and cure performance.

The adhesive provides excellent adhesion to a wide range of timber species, including dense Australian hardwoods, imported hardwoods, Radiata pine and other softwoods. Its moisture-curing polyurethane chemistry produces a strong, water-resistant bond with slight expansion during cure.

AD5205-S is designed for demanding structural timber applications and meets EN 302 / AS/NZS 4364:2010 requirements. It is also certified by the Glued Laminated Timber Association of Australia under GLTAA Certificate #007.

Its combination of structural bond performance, 20-minute working time and relatively low application rate makes AD5205-S particularly suited to professional timber processors manufacturing glue-laminated beams and other engineered timber components.

Related Structural Timber Adhesives

For shorter assembly times, explore 2-Minute Finger Jointing Adhesive and 4-Minute Finger Jointing Adhesive.

For additional processing time, see our 50-Minute Lamination Adhesive.

Learn more about adhesive working time and clamping requirements.

Material

Single-Component Moisture-Curing Polyurethane Adhesive

Advantages

Up to 20-minute working time for structural timber lamination
Meets EN 302 / AS/NZS 4364:2010 requirements
GLTAA certified structural adhesive – Certificate #007
Suitable for glue-laminated beams and engineered timber
Excellent adhesion to Australian hardwoods and softwoods
Suitable for high-density timbers
Low adhesive application rate of 55–110 g/m²
Water-resistant cured bond with excellent heat resistance
Single-component polyurethane – no mixing required
Suitable for machine application and industrial production

Certifications

EN 302 / AS/NZS 4364:2010 – Pass

GLTAA – Glued Laminated Timber Association of Australia Certificate #007

Product Application

Ensure all bonding surfaces are clean, dry and free from dust, oil, grease and other contaminants that may interfere with adhesion.

Fortis AD5205-S is designed for structural timber lamination and engineered wood bonding. Accurate machining and close wood-to-wood contact are essential for achieving optimum structural bond performance.

Apply AD5205-S evenly at the application rate specified in the current Technical Data Sheet. A fine water mist applied to the timber may assist the moisture-curing reaction where recommended for the timber species and processing conditions.

Assemble and press the timber components within the specified working time. AD5205-S provides a working time of less than 20 minutes under specified conditions, allowing additional assembly time for larger laminated timber components.

Suitable and consistent bonding pressure must be maintained during cure. The current product information recommends a minimum pressure of approximately 1400 kPa for laminating applications.

Processing and cure times can vary depending on timber species, moisture content, adhesive temperature, ambient temperature and humidity.

During cold weather, maintain the adhesive at an appropriate processing temperature. An adhesive temperature of approximately 20–30°C is recommended for consistent application and cure performance.

Refer to the current Fortis AD5205-S Technical Data Sheet for application rate, working time, clamping time and complete processing requirements before production use.

Surfaces

Suitable substrates and applications include:

• Australian hardwoods
• High-density hardwoods
• Imported hardwoods
• Radiata pine
• Softwoods
• Solid timber
• Engineered timber products
• Glue-laminated timber
• Laminated structural beams
• Suitable structural timber components

Bonding surfaces must be clean, dry and free from dust, oil, grease and other contaminants that may interfere with adhesion.

Excellent wood-to-wood contact is essential for structural lamination. Timber components should be accurately machined to provide close and consistent contact across the bonded surfaces.

Timber moisture content, species, density, temperature and production conditions can influence adhesive cure and bond performance.

Where recommended, a fine water mist may be applied to assist the moisture-curing reaction.

For laminating applications, suitable and consistent bonding pressure must be maintained during cure. Refer to the current Technical Data Sheet for processing requirements.

Production trials should be carried out when introducing new timber species, laminated sections or manufacturing conditions.

Specifications

Specification	Value
GLTAA Certificate	#007
Working Time	<20 minutes
EN 302 / AS/NZS 4364:2010	Pass
Application Rate:	55–110 g/m²

Pack Sizes

225 kg, 1,100 kg

Fortis AD5205-S FAQs

What is Fortis AD5205-S used for?
Fortis AD5205-S is a structural polyurethane timber adhesive developed for glue lamination and structural wood bonding.

Is AD5205-S a structural adhesive?
Yes. AD5205-S meets EN 302 / AS/NZS 4364:2010 requirements and holds GLTAA Certificate #007.

Is AD5205-S suitable for glue-laminated beams?
Yes. Its 20-minute working time makes AD5205-S particularly suited to laminated timber beams and engineered timber components.

What timber can AD5205-S bond?
It is suitable for a wide range of timbers including Australian hardwoods, high-density hardwoods, Radiata pine and other softwoods.

What is the working time of AD5205-S?
The current specification lists a working time of less than 20 minutes. Processing time can vary with temperature, humidity and timber conditions.

Does AD5205-S require mixing?
No. It is a single-component, moisture-curing polyurethane adhesive.

Why is water misted onto the timber?
Where recommended, a fine water mist provides additional moisture to assist the polyurethane curing reaction.

Does AD5205-S expand during curing?
Yes. The adhesive produces slight expansion as it cures.

What bonding pressure is required?
The current product information recommends a minimum bonding pressure of approximately 1400 kPa for laminating applications.

Where can I find processing instructions?
Refer to the current Fortis AD5205-S TDS for application rate, working time, clamping and processing requirements.

20-Minute Lamination Adhesive | Fortis AD5205-S