High performance joint and crack sealing system for construction joints, expansion (movement) joints and connection joints or cracks.
Flexible sealing tape is thin and extra-tough elastic strip with considerable longitudinal and lateral extension. Ideal for sealing and waterproofing expansion joints and over cracks subject to irregular and high movements.
Excellent resistance to weathering, UV radiation and chemically stable.
Thermal welding ensures secure, watertight joints.
Sealing construction or expansion joints, transition joints and large active cracks on podium slabs, tower to podium movement joints, car-park decks, balconies and roof decks, etc. Can be used to reinstate failed sealant in joints which exceed mastic sealant limits.
| Colour: | Grey |
| Total thickness (approx.): | 1.0 mm / 2.0 mm |
| Resistance to temperature min. / max.: | – 30°C / + 90°C |
| Length per roll: | 25 metres (Alternative size upon request) |
| Physical Properties: (approx:) | DIN | Value |
|---|---|---|
| Available widths: | Internal | 150, 200, 250 and 300 mm |
| Thickness | Internal | 1.0 mm / 2.0 mm |
| Length per roll: | Internal | 25 Meter (Alternative make ups upon request) |
| Tensile properties: | ||
| Tear resistance – lengthwise | DIN EN 12311-2 Method B | 15 N/mm² |
| Tear resistance – across | DIN EN 12311-2 Method B | 15 N/mm² |
| Elongation at break – lengthwise | DIN EN 12311-2 Method B | 620 % |
| Elongation at break – across | DIN EN 12311-2 Method B | 670 % |
| Tear resistance (nail shank) – lengthwise | DIN EN 12310-1 | 260 N |
| Tear resistance (nail shank) – across | DIN EN 12310-1 | 260 N |
| Water vapour permeability | DIN EN 1931 Method B | 60 m |
| Shore A hardness | Internal | 69-73 |
| Bonding strength | DIN EN 1348 | ≥4.0 N/mm² |
| Peel test on wood carrier | Internal | ≥100 N* |
| Water tightness | DIN EN 1928-A-60 kPA’24 Std. DIN EN 1928-A-60 kPA’24 Std. |
watertight watertight |
| Burst pressure | Internal | ≥4 bar |
| UV – Resistance | DIN EN ISO 4892-3 | ≥6500 h |
| Reaction to fire | DIN EN ISO 11925-2 / EN 13501-1 | Class E |
| * in dependence of the used adhesive | ||
Surfaces must be clean and free from laitance and contaminants. Repair all unsound substrates. Surface should be dry or saturated-surface-dry with maximum 10% moisture content.
Before welding the tape, the surfaces being welded must be abraded with 120-240 grit sandpaper, for best weld adhesion.
Before bonding tape to concrete with the epoxy adhesive (and encapsulating tape edge in adhesive), both sides of the tape must be solvent wiped with xylene to clean and allowed to dry. Not solvent wiping reduces adhesion of epoxy to the tape.
Apply mixed SILCOR® Epoxy adhesive to substrate both sides of the joint with a spatula to a thickness of 1mm to 2mm.
Ensure the adhesive application is a minimum 25mm wider than the FLEXIBLE SEALING TAPE strip. Minimum width of adhesive on either side of the joint should be 50mm. On damp surfaces, ensure the adhesive is well worked into the concrete to allow bond to develop.
Place cleaned FLEXIBLE SEALING TAPE strip into the adhesive, with central tape facing away from the joint. Roll the strip into the adhesive ensuring all trapped air is removed and adhesive seeps through perforations at edges of the strip. Where joint movement exceeds 25% of the joint width, form a “loop” in the FLEXIBLE SEALING TAPE of sufficient size to accommodate the extent of movement (contact your local GCP representative for further guidance). Where possible, the loop should protrude above the joint, not into the joint, to avoid pinch damage with joint movement.
Immediately apply a second layer of adhesive, to a thickness of 1mm to 2mm, to the top of the FLEXIBLE SEALING TAPE extending onto the minimum 25mm excess width of the first adhesive layer.
Whilst the adhesive is still tacky, sand broadcast the full surface area of the adhesive using clean, kiln dried sharp quartz sand, 0.5 to 1.2mm in size. Allow adhesive to cure, then vacuum to remove all unbonded sand. Ensure the sand broadcast surface remains clean and dry prior to application of waterproof membrane.
Joints in FLEXIBLE SEALING TAPE may be formed with a hot air gun and light pressure rolling. Do not use solvent or flame jointing methods. Ensure FLEXIBLE SEALING TAPE is clean.
A minimum lap of 50mm must be employed. Do not overheat the FLEXIBLE SEALING TAPE. Heat both surfaces simultaneously and bring together when heated surfaces are fully softened. Immediately pressure roll to displace air bubbles and ensure bonding. Always test a specimen joint to ensure correct technique and strong bond is achieved.
Vertical 90 degree corners should be formed by gently heating the FLEXIBLE SEALING TAPE and forming a sharp 90 degree bend in the strip.
FLEXIBLE SEALING TAPE must be protected from mechanical damage prior to and during installation of finishes, back filling etc., using Protectoboard.
In exposed or trafficable situations, Flexible Sealing Tape must be covered by a metal cover plate as protection. Cover plate must not contact the FLEXIBLE SEALING TAPE or restrict its operation.
FLEXIBLE SEALING TAPE strip 25m rolls
Store unopened in a dry place indoors between +5°C and +30°C. Under these conditions, FLEXIBLE SEALING TAPE has a maximum shelf life of 12 months.
Refer to the SDS of the products or when in doubt contact your local GCP representative. Always wear protective clothing, gloves and protective goggles when handling chemical products. For full information, consult the relevant SDS.
Information contained in this document does not cover all possible application scenarios or imply product suitability for an application. Please contact your local GCP representative or the GCP Technical Department for further information.
Available Australia wide through the GCP distributor network.
GCP manufactures a comprehensive range of high quality, high performance construction products. In addition, Offers technical support and on-site advice to specifiers, end users and contractors. Please contact your GCP sales representative or GCP Head Office for this service.
