Description
PU Roofing Adhesive for Flat Roof Insulation Boards
Soudatherm Roof 170 is a solvent-free, moisture-curing polyurethane roofing adhesive designed for the permanent bonding of insulation boards on flat roof systems. Its pourable liquid formulation provides high bond strength and fast strength build-up, making it an efficient alternative to traditional mechanical fixing methods. Suitable for professional roofing applications, it is compatible with most common insulation materials and roofing substrates.
The adhesive is designed for bonding PIR, PUR, EPS, XPS, phenolic foam, mineral wool and other roofing insulation boards to a wide range of substrates including bituminous roofing felts, steel roof decks, timber boards, masonry and hard PVC. It is also suitable for insulation-to-insulation bonding in multi-layer roof constructions.


Key Features & Benefits
- Pourable polyurethane roofing adhesive
- Solvent-free formulation
- Moisture-curing technology
- Fast strength build-up
- High bond strength
- Suitable for flat roofing applications
- Compatible with EPS insulation boards
- Compatible with XPS insulation boards
- Compatible with PIR and PUR insulation boards
- Suitable for phenolic foam insulation
- Suitable for mineral wool insulation
- Bonds insulation to insulation
- Bonds insulation to roofing substrates
- Suitable for professional roofing projects
- Helps eliminate mechanical fixing requirements where specified
- Suitable for most common roofing substrates
- Efficient application method
Suitable Applications
- Flat roof insulation installation
- PIR insulation board bonding
- PUR insulation board bonding
- EPS insulation board bonding
- XPS insulation board bonding
- Phenolic insulation board bonding
- Mineral wool insulation installation
- Multi-layer insulation systems
- Roof refurbishment projects
- New-build roofing projects
- Commercial roofing applications
- Industrial roofing applications
Suitable Substrates
- Bituminous roofing felt
- Steel roof decks
- Masonry
- Timber boards
- Hard PVC
- Plaster
- Existing insulation boards
- Approved vapour control layers
Technical Information
- Base: Polyurethane adhesive
- Cure System: Moisture curing
- Formulation: Single-component
- Solvent-Free: Yes
- Application Type: Pourable liquid adhesive
- Open Adjustment Time: Up to approximately 40 minutes
- Typical Cure Time: 2–6 hours depending on temperature and humidity
- Suitable for Flat Roof Systems: Yes
- Compatible with Polystyrene: Yes
- Professional Use Product: Yes
Frequently Asked Questions
What is Soudatherm Roof 170 used for?
Soudatherm Roof 170 is designed for bonding flat roof insulation boards to a variety of roofing substrates, including bituminous roofing systems, steel decks and timber roof structures.
Which insulation boards can it bond?
It is suitable for PIR, PUR, EPS, XPS, phenolic foam and mineral wool insulation boards.
Can it be used on bituminous roofing felt?
Yes. The adhesive is suitable for bonding insulation boards onto bituminous roofing membranes and roofing felts.
How long does it take to cure?
Typical curing time is between 2 and 6 hours depending on ambient temperature, substrate conditions and humidity levels.
Is Soudatherm Roof 170 solvent free?
Yes. The adhesive is solvent free and compatible with polystyrene insulation materials.
Can it be used for insulation-to-insulation bonding?
Yes. It can be used for multi-layer insulation systems where insulation boards are bonded together.
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