FLOWSEAL is used to provide a weather tight seal to expansion & structural joints and can be used in both new and existing applications.

Depending on the degree of compression, it may be used to provide thermal, acoustic, dust and air protection.

Flowseal is an open cell Polyurethane foam, impregnated with chemically stabilised acrylic and backed with a self adhesive scrim tape. It remains permanently elastic and once unpacked and applied will expand to fill the joint, including any irregularities or imperfections. Flowseal has excellent resistance to UV, mildew, ageing and will not crack, split, bleed or dry throughout continuous movement cycles.
  
APPLICATIONS          
Flowseal's advanced technical specification makes it the preferred component for many applications in the building and construction industries, including 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 of Flowseal 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.

Flowseal 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. Flowseal 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.

  
CORRECT THICKNESS AND COMPRESSION
                
Flowseal is supplied on rolls compressed to one sixth of its original thickness and supplied with a self adhesive coating to one side. At its maximum expansion it will provide a light air baffle, however when limited to 25% expansion of its compressed thickness, Flowseal can provide a weather tight seal against wind and driving rain. Various other situations can be provided for as shown below.     

SPECIFYING THE RIGHT THICKNESS AND COMPRESSION
      
The chart below can be used as a guide to select the recommended Flowseal thickness for various applications

INSTALLATION
                       
For installation into pre-formed spaces, insert Flowseal edgeways. It then expands to fill the joint. There is no need for excessive pressure to be applied in order to ensure firm adhesion. Flowseal starts to expand relatively quickly.

Flowseal can be easily applied to one component before another is positioned, as with lap joints or corrugated roofing panels.There is no masking, mixing, curing or cleaning up required. No surface preparation or primers are needed, it is advisable however to remove oil, grease dust from surfaces in contact with the self adhesive layer.

Flowseal is also available as an uncompressed non-adhesive product for many applications such as anti-vibration pads/ gaskets etc.

The product is supplied with alight coat weight adhesive on one side, supported by a non-stretch polyester scrim tape to prevent stretching and improve location. Seals will remain permanently elastic thoroughly weathertight. Back pressure allows a positive seal to be maintained and minimises substrate tension. Impregnated foam can follow all joint contours.

Flowseal will expand to fill an uneven gap - giving a weather tight / weather protected seal (Depending upon expansion)

TECHNICAL INFORMATION

GENERAL MAINTENANCE

Once installed Flowseal is maintenance free and can be replaced should a section be damaged.

It is U/V stabilised and resistant to bacteria and fungal growth etc. It may be painted and will not creep or shrink under normal conditions

Fire resistant grade available upon request