Sikadur-Combiflex®-930

Approved for use in contact with potable water under:

• Regulation 31(4) (a) of the water supply (water quality) regulation 2016 for England and 2018 for Wales.
• Approved by Energy and Climate Change Directorate Drinking Water Quality Division, under Water Supply (Water Quality) (Scotland) Regulations 2014, 33(3) (a).
• Approved by the Department of Agriculture, Environment and Rural Affairs under Regulation 30 of the Water Supply (Water Quality) Regulations (Northern Ireland) 2017.

IMPORTANT NOTE
Specific instructions for use (IFU) for potable water applications must be followed and are available
upon request.  For all other applications follow the guidance within this technical data sheet.

TPE (thermoplastic elastomer)

24 months from date of manufacture

Store in unopened, original packaging, protected from moisture and direct sunlight.

1 or 2 mm

• 1 mm thickness: 950 g/m²
• 2 mm thickness: 1900 g/m²

Sikadur-Combiflex®-930 bandage adhered using Sikadur^® Combiflex^®-933

≥400 %

• 24 N (1 mm thickness)
• 40 N (2 mm thickness)

On request

Pass (>5000 hr / Grade 0) according to EN 1297

μ = 30,000 (±30 %) according to EN 1931

8 bar

≥5 °C

>5 °C

A 5 kg pack of adhesive yields approximately 3.6 litres. Coverage will vary dependent upon substrate profile and condition.

Concrete and masonry surfaces should be mechanically abraded to maximise adhesion.  It is essential that all surfaces are clean, free from dust, oil, grease and any other contaminants that may affect the adhesion adversely.  All metal surfaces should be abrasive blasted to SA2½.

Prepare an area of substrate around the joint or crack allowing at least 25 mm to either side of the bandage to be applied.  Joints or cracks in concrete, brick or block subject to active water ingress must be prepared and repaired with a suitable rapid setting Sika repair material.  Damaged concrete should be repaired with a suitable Sika repair mortar.  Allow time for the repair products to cure before proceeding to the next stage.

Masking the crack or joint

For cracks or joints of less than 25mm in width apply a 25mm wide masking tape.  For designed joints of more than 25mm in width masking tape is not always required, in which case the Sikadur^® Combiflex^®-933 adhesive is applied up to the edge of the joint.  In all cases the edges of the de-bonded area should be straight and parallel.

Masking the outer edges of the crack or joint

Apply the masking tape to allow a minimum of 5 mm to either side of the Sikadur-Combiflex®-930 bandage.

With a clean spreader, suitable trowel or brush, apply Sikadur^® Combiflex^®-933 adhesive between the masking tapes to a depth of 1- 2 mm.  Remove the central masking tape (if used) immediately on completion. Centrally position the Sikadur-Combiflex®-930 bandage onto the Sikadur^® Combiflex^®-933 adhesive pushing it firmly with a spatula, or trowel, to remove trapped air and ensure full contact.

Run a straight edge down the sides of the bandage to ensure a full bond. Overlap the edges of the bandage with 5 mm of Sikadur^® Combiflex^®-933 adhesive applied at a depth of 1-2 mm to encapsulate the edges of the bandage. Remove the masking tapes and clean off all excess adhesive from surrounding areas.  Where required the Sikadur-Combiflex®-930 bandage can be joined by heat welding. Ensure a minimum overlap of 25 mm.

Immediately after use all tools and equipment can be cleaned using a suitable solvent as hardened adhesive can only be removed mechanically.  Please note the solvent should not be used in a confined space or where spillages could come into contact with potable water.  In reservoir applications, wipe with a clean, lint-free cloth and potable water only. Repeat as necessary