Self-Adhesive Polymer Modified Bitumen Waterproofing Sheet Membrane

Self-adhesive polymer-modified asphalt waterproofing membrane (hereinafter referred to as Type N) is made of synthetic rubber such as SBS, high-quality paving bitumen, and tackifiers as the base material. The upper surface material is PET film, PE film, aluminum foil, or silicone release film, and the lower surface is covered with silicone release film as the anti-adhesive layer. This is a carrier-free self-adhesive polymer-modified bitumen membrane.

Self-adhesive polymer-modified asphalt polyester mat waterproofing membrane (hereinafter referred to as Type PY) uses a long-fiber polyester mat as the carrier and tackified polymer-modified bitumen as the coating material. The upper surface is covered with PE film, fine sand, slate, aluminum foil, or release film as the isolation layer, and the lower surface is covered with silicone release film as the anti-adhesive layer. This is a self-adhesive polymer modified bitumen membrane with polyester mat carrier.

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Self adhesive polymer modified asphalt waterproofing membrane

 Product Features

  • Special formulation and unique manufacturing process – cold application, no open flame, no adhesive required, non-polluting to the environment.
  • Polyester mat offers high tensile strength and high elongation – strong adaptability to substrate shrinkage, cracking, and deformation.
  • SBS modified bitumen as the coating – good high and low temperature resistance, suitable for exposed waterproofing.
  • Excellent self-adhesion – membrane overlaps bond as long as the membrane itself lasts.
  • The underside of the membrane is coated with self-adhesive rubberized bitumen in regular strips, creating strip bonding to the substrate, with unique functions:
  • Forms a vapor release channel – balances substrate vapor pressure and prevents blistering.
  • When the substrate shrinks, cracks, or deforms, it avoids “zero elongation” cracking caused by full bonding.

Applications

Suitable for roofing, below-grade, interior, municipal engineering, water storage tanks, swimming pools,subway, and tunnel waterproofing of industrial and commercial buildings. Also suitable for wood and metal structure roof waterproofing projects. Especially ideal for waterproofing renovation of military facilities, oil depots, chemical plants, grain depots, and other locations where open flame is not allowed.

  • self adhesive bitumen membrane
  • self adhesive bituminous membranes

Product Classification

CarrierUpper Surface MaterialPerformance TypeThicknessWidthArea
Carrier-free (Type N)PE film, PET film, Film-less double-sided self-adhesive (D)Type I1.2 mm1.5 mm2.0 mm  1000mm10m215m220m230m2
Type II
Polyester mat (Type PY)PE filmFine sand (S)Film-less double-sided self-adhesive (D)   Type I2.0 mm
Type II3.0 mm 4.0 mm

·Performance: Self-adhesive polymer-modified asphalt waterproofing membrane complies with GB23441-2009 standard.    

Type N – Main physical and mechanical properties

No.Parameter  Index
P EP ETD
IIIIII
 1 Tensile propertiesTensile force  (N/50mm)  ≥150200150200–
Elongation at max. tensile force (％  )  ≥20030–
Asphalt elongation at break  (％  )  ≥250150450
Phenomenon during stretchingNo separation of asphalt coating from film before film rupture–
2Nail tear strength (N)  ≥601103040–
3Heat resistance70°C, slip ≤ 2 mm
4Low temperature flexibility℃-20-30-20-30-20
No cracks
5Water impermeability (30min)0.2 Mpa ， 120min no leakage
6Peel strength  (N/mm)  ≥Membrane to membrane1.0
Membrane to aluminum plate1.5
7Nail sealabilityPass
8Oil migration (sheets)   ≤2
9Tack retention (min)  ≥20
 10 Heat agingTensile force retention  (％  )  ≥80
Elongation at max. tensile force (％  )  ≥20030400( asphalt layer elongation at break )
Low temperature flexibility ( ℃ )-18-28-18-28-18
No cracks
Peel strength – membrane to aluminum（N/mm）  ≥1.5
11 Appearance≤No blistering, wrinkling, sliding, or flowing
Dimensional change  (％  )  ≤2

Type PY – Main physical and mechanical properties

No.ParameterIndex
III
1Soluble content    (g/m2 )  ≥2.01300–
3.02100
4.02900
2 Tensile propertiesTensile force（N/50mm） ≥2.0350–
3.0450600
4.0450800
Elongation at max. tensile force  (%)       ≥3040
3Heat resistance70℃ no slipping, flowing, or dripping
4Low temperature flexibility( ℃ )-20-30
No cracks
5Water impermeability0.3 Mpa, 120min    no leakage
6Peel strength （N/mm）≥Membrane to membrane1.0
Membrane to aluminum plate1.5
7Nail sealabilityPass
8Oil migration (sheets)    ≤2
9Tack retention  (min)       ≥15
 10 Heat agingElongation at max. tensile force  (%)  ≥3040
Low temperature flexibility( ℃ )-18-28
No cracks
Peel strength – membrane to aluminum（N/mm）  ≥1.5
Dimensional stability （%） ≤1.51.0
11Re-peel strength of self-adhesive asphalt（N/mm）     ≥1.5

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Phone:+8613792181135 / +8615092092661