SikaShield® VB P42 SF 3 mm

APP modified bitumen

Glass fiber

36 months from date of production

The Product must be stored in original unopened and undamaged packaging in dry conditions and temperatures between 41°F (5°C) and 95°F (35°C). Store in a vertical position. Do not stack pallets of the rolls on top of each other, or under pallets of any other materials during transport or storage. Always refer to packaging.

SYSTEM DESIGN

Consider the following when designing the system:

• The supporting structure must be of sufficient structural strength to support all new and existing layers of the system build-up.

• The complete system must be designed to withstand and be secured against wind uplift loadings.

SUBSTRATE CONDITION

The substrate surface must be uniform, firm, smooth and free of any sharp protrusion or burrs, clean, dry, free of grease, laitance, oil, dust and loosely adhering particles.

ALIGNMENT

To avoid coinciding joints, lay the membranes parallel to one another. When applying on another bituminous membrane, make sure to straddle the overlaps of the previous layer.

1. Unroll the membrane.
2. Align the membrane.
3. Re-roll the membrane before application.

COLD ADHESIVE BONDING

1. Apply the SikaShield® Asphalt Adhesive at the required consumption onto the surface. Note: Refer to the individual Product Data Sheet.
2. Apply the SikaShield® VB P42 SF 3 mm membrane onto the adhesive while still fresh. 
3. Roll the surface of the applied membrane with a roller (or similar) from the center to the edge to remove any air bubbles.
4. Seal the overlaps by welding or torch or with hot melt bitumen.

HOT MELT BITUMEN ADHESIVE BONDING (MOPPING)

1. Apply the hot melt bitumen at the required consumption onto the surface. Note: Refer to the individual Product Data Sheet.
2. Apply the SikaShield® VB P42 SF 3 mm membrane onto the adhesive while still hot. 
3. Roll the surface of the applied membrane with a roller from the center to the edge to remove any air bubbles.
4. Seal the overlaps by welding or torch or with hot melt bitumen.

Suitable substrates for cold or mopping application:

• Concrete
• Bituminous membranes with a smooth surface
• Coatings (check the compatibility)
• Brick masonry
• Cementitious screeds

DETAILING

Use a sharp knife to cut in all details such as internal and external corners, upstands, vent pipes, drains, support metalwork etc.

Refer to the relevant method statement for further information on detailing.

MEMBRANE OVERLAPS

1. Overlap the membranes by a minimum of 4" (100 mm) on the sides and 6" (150 mm) on each end or as specified by the supplier.
2. At the end overlap, cut off a corner measuring 4" (100 mm) per side at an angle of 45°.