Product Details:Sika® WP Shield-104 PM membrane is manufactured by modifying premium grade asphalts with atactic poly propylene and specially reinforced with non- woven polyester. This type of membrane show excellent strength, elasticity and durability.
Uses:
It is an excellent uv stable membrane hence can be used to waterproof:
- Medium to Large Roof Concrete Exposed Roofs
Application Instructions:Substrate QualityConcrete, mortar surfaces must be clean, free from grease, oil, and loosely adhering particles. Steel and iron surfaces must be free from scale, rust, grease and oil.
Substrate PreparationNew concrete should be cured for at least 28 days and should have a pull off strength ≥1.5 N/mm2. Cementitious or Mineral based substrates must be prepared mechanically using abrasive blast cleaning or scarifyingequipment to remove cement laitance and to achieve an open textured surface.Loose friable material and weak concrete must be completely removed and surface defects such asblowholes and voids must be fully exposed. The concrete must be carefully assessed for moisture content, air entrapment, and surface finish prior toany primer application
Application Method / Tools:
- Apply a bituminous primer to the concrete substrateby a brush, roller or a spray machine.
- After the primer applied surface gets dried align the
- membrane on the substrate by unrollinng the membrane.
- Post its alignment re-roll the membrane half way
- from both sides.
- Use gas burner to heat the substrate and thermofusible film on the underside on lower face of the membrane. When the thermo-fusible film and the layer
- ofbitumen melts after torching the membrane is
- ready to stick.
- Roll and press firmly against the substrate to bond.
- The bitumen should ooze out from the edges which
- will make the edges watertight. After the first roll is
- torched align the second roll next to the first and repeat the same procedure as above, also the overlapmust be 80mm for the side and 150 mm at the ends.
- The membranes should be laid in a staggered manner so that the seams are not in a line.
- All the details at edges, parapet walls, pipe penetrations etc shoud also be sealed with extra care to en-surefull bondage. The edges should be sealed well into the grooves.
- Detailings must be treated with utmost care such as
- Pipe Penetrations, Lightening Conductors Clips, Pedestals etc with proper overlaps.Sika Technical Services team to be consulted in case of any query
Basis Of Product Data:All technical data stated in this Product Data Sheet are based on laboratory tests. Actual measured data may vary due to circumstances beyond our control.
Local Restrictions:Please note that as a result of specific local regulations the declared data for this product may vary from country to country. Please consult the local Product Data Sheet for the exact product data.
Ecology, Health And Safety:For information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Material Safety Data Sheet containing.physical, ecological, toxicological and other safety related data
Legal Notes:The information, and, in particular, the recommendations relating to the application and end-use of Sika products, are given in good faith based on Sika's current knowledge and experience of the products when properly stored, handled and applied under normal conditions in accordance with Sika's recommendations.