It remains permanently elastic and once unpacked and applied will expand to fill the joint, including any irregularities or imperfections. It has excellent resistance to UV, mildew, ageing and will not crack, split, bleed or dry throughout continuous movement cycles.
Uses include joints between precast units , seals around doors and window frames, or between corrugated roofing panels, roof structures and roof lights ventilation and air conditioning ductwork. The exceptional flexibility and elasticity makes it an ideal sealant for most unevenly surfaced components and is suitable for use with brickwork, concrete, plastics, steel, timber and fibrous materials. The product provides an ideal seal where potential structural movement due to settlement or vibration for example may take place.
Expandafoam is ideally suited for use as a primary or secondary seal in vertical and horizontal joints of building facades (concrete, brick, stone, insulation panels) as well as metal painted cladding systems, window perimeter curtain walling and skylights. Expandafoam can be used with any water based Acrylic or Latex paint and being non-migratory is compatible with most caulking materials.
Because of the permanently flexible seal it is also widely used in the automotive industry to absorb vibration between body shell and dashboard assemblies.
These Accoustic / Insulation and Filtration Foams do not support combustion, melt or drip. Neither do they suffer wicking effects from contamination by dust or dirt. When a flame is applied, the foam simply char, leaving an inert char barrier that will protect other underlying materials from a wide range of ignition sources.
When tested to B.S. 476 Parts 6 and 7, the Foams achieve class 'O' to the British Building regulations. And also improved UL94 HF1 and V0 can be achieved.
Used within Heating & Ventilation and acoustics applications.
A reticulated 60ppi foam is impregnated with Plastisol to create a coating onto the foam strands to improve water resistance but also creates a product with excellent High Frequency weldability. Applications include Automotive seating motifs, and compressed air filters.