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Quick Details

  • Type: Roofing Felt, waterproofing membrane
  • Place of Origin: Zhejiang, China (Mainland)
  • Brand Name: Hongcheng
  • Certificate: ISO9001:2000
  • Shape: Flat
  • Material: bitumen
  • Color: black
  • Surface Treatment: Other

Packaging & Delivery

Packaging Details 10square meters per bundle
Delivery Time 7~15days after the order confirmed


APP is one of modified bituminious roof felt paper, which has good temperature resistence...



Bituminous Roofing felt paper represent a major portion of today's roofing and have a strong record of reliability. The waterproofing membrane is field-fabricated with layers of bitumen alternating with piles of reinforcing felts and appropriate protective surfacing.


SBS is made out of modified bitumen with non-woven polyester or glass fiber reinforcements. APP membranes provide superior tensile strength while maintaining critical flexibility- even in the coldest environments. Additionally, with APP roofing membranes (coated with a proprietary blend of asphalt and atactic polypropylene), contractors now have an efficient mode of application by heat welding, making hot mopping unnecessary.




[Construction Points]
Construction methods——hot melt, cold and hot adhering methods could be adopted 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.
Substrate preparation——waterproofing substrates shall be flat, solid, and be dried sufficiently. Detail structures shall meet requirements of related stipulations and designs.
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.
Protection isolation layer construction——protection isolation layer shall be set on the exterior surface of waterproof layers according to related stipulations and designs, if use shale sheets or mineral grain coating surfaces as exposed waterproof layers, additional protective layer could be omitted; isolation layers shall be set between waterproof layers and rigid protective layers.
[Attentions for Construction]
·Construction shall not be carried out in rain, snow or over 5 degree wind weather;
·There shall be sufficient safety protective facilities in construction site, place firefighting devices according to stipulations.

Installation Sketch point
 Clean the substrate using broom or high pressure dusty cleaner.
 Apply primer
 Heat the membrane bottom using a high temperature flame gun.
 Push forward while the primer and membrane oil melted
 Use a roller to push hard the membrane surface to ensure it stick firmly


Technical data Confirming to GB18242-2008

1Soluble content/(g/m2)≥3mm2100 
Test No flame No flame 
2Heat resistance°C90105
TestNo flow, no dripping
3Low temperature flexibility/°C-20-25
No crack
4Impermeability 30minutes0.3MPa0.2MPa0.3MPa
Secondly-Maximum    800
TestNo crack, no apart
6ElongationMaximum/%≥30 40  
Secondly-Maximum≥  15
7Oil LeakingPieces≤2



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