Expansion joints, seams and void spaces

Sealants for linear joints

To comply with building regulations on fire safety, buildings must be divided into fire compartments. The fire resistance of the walls and ceilings between these fire compartments can be compromised by seams, expansion joints and cavities.

Walraven’s Pacifyre® sealing products have been tested and approved for the effective fire-sealing of seams, joints and cracks between the walls, floors and ceilings of fire compartments. They are also effective for sealing annular joints around (insulated) pipes, fire collars and penetrations. Our solutions prevent the spread of fire and smoke through joints in fire-resistant partitions and offer excellent adhesion to most substrates. Below is an overview of our acrylic and hybrid fire-resistant sealants.

Tested for fire safety

Our products have been tested for fire resistance by accredited European testing institutes in accordance with EN 1366-4 and EN 1366-3 and offer fire resistance classified in accordance with EN 13501-2:2003 up to and including EI 240. This means: 240 minutes of integrity and insulation, depending on the material and configuration.

The Pacifyre acrylic and hybrid-based sealants are safe to use. They have an emission class of A, and the acrylic product has achieved the highest possible EC1plus classification under the EMICODE® system. It also offers sound reduction performance of up to 62 dB in accordance with EN ISO 717-1.

Pacifyre joint expansion

Walraven Pacifyre® A Acrylic Fire Sealant

Features and benefits

Fire-resistant and smoke-tight for up to 4 hours
Suitable for static linear joints in walls and floors with a maximum movement of 12.5%
For sealing annular joints around pipes, fire collars and fire sleeves or wraps
For sealing cracks in concrete and plasterwork
Excellent adhesion to many porous substrates
Noise reduction up to 62 dB
Colourfast, waterproof and paintable after curing
Remains elastic after curing
Indoor emissions: EC1 Plus / Level A
Forms a skin in approx. 20 mins
Curing rate: 1 mm/24 hours
Shrinkage approx. 15% (DIN 52451)
Activation temperature ≥ 120 °C
Temperature resistance between -20 °C and 80 °C
Application temperature between 5 °C and 30 °C
CE marked
Tested in accordance with EN 1366-4, EN 1366-3 and EN ISO 717-1

Walraven Pacifyre® H Hybrid Sealant

Features and benefits

Good adhesion to most substrates
Easy to apply using a standard caulking gun
Colourfast, UV-resistant and paintable once cured
Remains permanently elastic after curing
Emission class A for indoor use
No blistering in hot or damp weather conditions
Suitable for linear joints in walls and floors with up to 25% movement
For sealing annular joints around pipes, fire collars and fire sleeves or wrappings
Forms a skin in approx. 20 mins.
Fire class E (EN 13501-1)
Up to EI 240 for linear joint seals and penetration seals
Tested and approved in accordance with EN 1366-4 and EN 1366-3