SBS modified bitumen membrane

SBS modified bitumen membrane

SBS modified bitumen membrane is made by saturating the base in bitumen, or thermoplastic elastomer (such as styrene butadiene-SBS), reinforced with polyester or fiberglass, finishing the upward face with fine sands, mineral slates(or grains) or polythene membrane etc.

APP modified bitumen membrane is made by saturating the base in bitumen, or thermoplastics (such as APP,APAO,APO), then covering double faces with thermoplastic elastomer (SBS) and last finishing the upward face with fine sands, mineral slates(or grains) or polythene membrane etc. while downward face with fine sands or polythene membrane.

Characteristic

Good impermeability. Possess good tensile strength, elongation rate and size stability which could be well suited the substrate distortion and crack.SBS modified bitumen membrane is specially being applied in the cold area with low temperature, while APP modified bitumen membrane is applied in the hot area with high temperature. Good performance in anti-puncture, anti-broker, anti-resistance, anti-erosion, anti-mildew, anti-weathering. Construction is convenient, the melt method can operate in four seasons, joints are reliable

Specification

Applicable scope

Suitable for civil building roofing, underground, bridge, parking, pool, tunnel in the line of waterproofing and damp proof, especially for the building under high temperature. According the roofing engineering stipulation, APP modified bitumen membrane could be used in the Grade civil building and industrial building which has special waterproofing requirement.

Storage and transportation instructions

<![if !supportLists]>l <![endif]>When storage and transportation, Different types and sizes of products shall be stacking separately, should not be mixed. Storage temperature should not be above 50°C, the height is not more than two layers, in the course of transportation, membrane must stand.

<![if !supportLists]>l <![endif]>The stacking height is not more than two layers. To prevent the tilt or pressure, when necessary cover the felt fabric.

<![if !supportLists]>l <![endif]>In normal conditions of storage and transportation, storage period is a year since the date of production

Technical data

SBS                                      [Confirming to GB 18242-2008]

Construction Points

<![if !supportLists]>l <![endif]>Construction methods--hot melt, cold and hot adhering methods could be adopter to adhere sheets and substrates, or different sheets. While constructed with hot melt method, the thickness of membrane must be over 3mm. If constructed with cold adhering method, the thickness of cold adhesive must be 0.5-1mm.

<![if !supportLists]>l <![endif]>Substrate preparation--waterproofing substrates shall be flat, solid, and be dried sufficiently.Detail structures shall meet requirements of related stipulations and designs.

<![if !supportLists]>l <![endif]>Waterproofing layer--there are two kinds of structures of laminated and single layers,for laminated layers, thickness of each layer shall be not lower than  3mm, with complete adhesion between each other.For single layer,thickness of the single layer shall not be lower than 4mm.

    Overlapping--overlapping between sheets shall be completely adhered, with 80-100mm  width of jointed area.  

Vertical surface ends--fasten with metal battens and bolts, coat special sealant in all edges.