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What is the best adhesive for SIP manufacturing?

A simple guide, helping you to achieve increased bonding efficiency when manufacturing SIP’s panels.

What are structural insulated panels?

Structural insulated panels (SIPs) are high performing building panels for residential and smaller commercial construction. SIPs are made up of an insulating foam core sandwiched between two structural facings, often oriented strand board (OSB Board). Manufactured in controlled factory environments, SIPs can be customized to suit various architectural designs. The outcome is a robust, energy efficient, and economically viable building system.

There are two main types of SIPs. Firstly, PIR SIPs. PIR stands for PolyIsocyanuRate which is a rigid insulation that is inserted between OSB (oriented strand board). PIR SIPs offer better performance than ESP SIPs, they deliver lower U-values (thermal/heat transmittance) and a thinner wall profile. Due to the key benefits, it drives the price up.

Secondly EPS SIPs. EPS stands for expanded polystyrene. EPS SIPs are more cost effective than PIR SIPs however they still deliver on the core principles of a structural insulated panel. They are for external walls, roofing, and floors. Depending on your application you may find PIR SIPs offer better value.

What are the advantages and disadvantages of structural insulated panels?


Energy Efficiency: Great thermal insulation and airtight construction reduce energy consumption.

Structural Strength: Stronger than timber due to composite foam core and outer OSB.

Cost-Effectiveness: Manufactured off-site, reducing construction time and costs.

Design Flexibility: Can accommodate various building designs and spans.

Pest Resistance: Less prone to pest infestation due to foam core.


Moisture Damage: Susceptible to degradation and rot when exposed to moisture.

Limited Adaptability: Difficult to modify once constructed.

Limited Lifespan: Require renovations after around 60 years.

Ventilation Requirements: Need specialized ventilation systems to prevent issues like condensation & Mold.

Additional Insulation Needed: Gaps in installation may require extra insulation for better sealing.


What is the best adhesive for SIP onsite assembly and manufacturing?


The best adhesive for manufacturing Structural Insulated Panels (SIPs) is typically a high-quality, moisture-resistant adhesive like our Aro-Bond 900 range of polyurethane adhesives. Given that SIPs are prone to moisture damage, it’s crucial to use an adhesive that can withstand exposure to water. In addition, the adhesive should have exceptional bonding capabilities to ensure the structural integrity of the panels. Utilising a specialised adhesive designed specifically for SIP construction can help mitigate the risk of delamination and ensure lasting performance, enhancing the overall durability and effectiveness of the panels.

Aro-Bond 900.20

Aro-Bond 900.35

Aro-Bond 900.45

Aro-Bond 900.90


Onsite assembly

Further to manufacturing there is also an adhesive requirement for onsite assembly. This is for joining the panels together onsite. Ureka recommends the Aro-Bond 920 which is a polyurethane based single component adhesive. This is ideal for onsite installation as it has excellent bond quality, outstanding water resistance and a fast cure speed.  Ureka offers selected products in our range in private label which this is one of them. This is especially valuable if your suppling only and would like to retain brand consistency. Click here to learn about our private label service.

Aro-Bond 920

Aro-Bond 920 is a single component moisture curing polyurethane wood adhesive with excellent water resistant characteristics.

  • Excellent water resistance – DIN 204 D4.
  • Easy to use & quick curing.
  • Exceptional bond strength
  • Bonds many substrates including non-porous & Accoya products.
  • Resistant to chemicals & Solvent free – odourless
  • Available in different cure speeds