Torch-on bituminous membranes arr_right_inav

APP Modified Bituminous Waterproofing Membrane

Description Specifications Scope of Application FAQ Download

Description

YHShield-7501 is a high-performance, APP-modified bituminous waterproofing membrane manufactured from premium bitumen modified with selected polymers, and reinforced with a strong, resilient, non-woven spun-bonded polyester fabric. The modification process enhances its flexibility, strength, and resistance to harsh environmental conditions. It features excellent heat resistance and good mechanical performance. The membranes are available in a variety of thicknesses in smooth and granule surfaces. It provides an economical and effective solution when applied over existing substrates to address roof leakage issues.

Specifications

**Packing and Specifications**
Item	Description
Packaging	Roll
Width (m)	1
Thickness (mm)	3, 4
Length (m)	10
Roll Size (m2/roll)	10
Upper Surface Material	Polyethylene film (PE),Sand (S) and Mineral granules (M)
Lower Surface Material	Polyethylene film (PE)

**Typical Properties and Characteristic**
Items	Test Methods	Values
Tensile Strength(L/T)[N/50mm]	EN 12311-1	850±20%/750±20%
Elongation at break (L/T)[%]	EN 12311-1	35±15/40±15
Resistance to Static Loading(20kg)	EN12730 Method B	Pass
Tensile Shear at Joint [N/50mm]	EN12317-1	650±20%
Resistance to Tearing(L/T) [N]	EN12310-2	300±30%/250±30%
Heat resistance @120℃	EN 1110	Pass
Low Temperature Flexibility (0℃)	EN 1109	No crack
Water Absorption [%]	ASTM D5147	≤2.5
Adhesion of granules [%]	EN12039	≤3.0
Watertightness (Method B: 24 hours at 60kPa)	EN 1928	Pass

Application Instructions

Substrate preparation: The concrete substrate should be clean, dry, sound, and free of all contamination, such as dirt, oil, and grease. Surface defects, such as blowholes and voids, must be repaired. Filling of joints and surface leveling must be carried out before application.

Priming: Apply YHBituprimer-4035 (water-based bituminous primer) or an equivalent to a clean, smooth, and dry surface using a brush, roller, or spray. Allow it to dry before applying the membrane. The primer’s low viscosity of the primer enables it to penetrate concrete pores, enhancing membrane-substrate adhesion between the membrane and substrate. It also binds any remaining dust particles on the concrete surface. while binding residual surface dust particles.

Detailing: Install strengthening layer at critical areas such as inside and outside corners, construction joints, pipe penetrations, eaves gutters, and expansion joints. Pre-cut the membrane to the required size and shape before application.

Membrane application: Unroll the membrane to release stress and position it according to the layout lines. Use a torch to heat the underside of the membrane and the substrate surface. When the bitumen on the membrane becomes shiny and molten, roll out the membrane while continuing to heat. Then, use a roller to press firmly and remove trapped air, ensuring a secure bond with the substrate. CAUTION: Do not over-torch as this will expose the reinforcement in the membrane and damage the membrane.

Overlap treatment: The overlap width of the membrane should be 100mm. Heat-seal the overlap area separately using the torch-applied method. At the seams between adjacent membranes, allow the modified bitumen to overflow slightly, with a uniform width of about 3-5mm.

Features & Benefits

· Excellent resistance to hydrostatic water.

· High puncture and fatigue resistance strength.

· High temperature stability.

· Excellent water and vapor resistance.

· Strength is reinforced with a high-quality non-woven polyester fabric.

Scope of Application

It is used as a waterproofing membrane for protection of various substrates in a wide range of applications, including：

· Waterproofing and damp-proofing of basements subject to permanent water submersion and damp soils, including pile capping and foundations.

· Waterproofing of retaining walls.

· Waterproofing onflat roofs under protective layers or ballast.

· Waterproofing on balconies, terraces and wet rooms under screed/tiles.

· Exposed waterproof membrane with opaque mineral granules as upper surface isolation material is used.

FAQ

Q1: What are the classifications of bituminous waterproof membrane?

What are the classifications of bituminous waterproof membrane?
Q2: What are the storage temperature and construction temperature ranges of asphalt membrane material?

The storage temperature and construction temperature of hot-melt membrane are ≤50℃ and ≥0℃ respectively, and the storage temperature and construction temperature of self-adhesive membrane are ≤45℃ and ≥5℃ respectively.
Q3: What standard specification (e.g.,ASTM,EN,ISO) does bituminous waterproof membrane implement?

Bituminous waterproof shall be in accordance with the testing methods such as ASTM and EN, and the standards and specifications such as EN 13969, ASTM D 6162/D 6163 and ASTM D 1970 shall be implemented.
Q4: How to standardize the construction of bituminous waterproof membrane?

In order to ensure the waterproof effect and quality, the membrane material construction should be carried out in accordance with the requirements of the construction specification in TDS. Please consult the engineer if you have any questions.
Q5: Where can the membrane be used?

It can be applied to roofing, underground and other waterproof projects of industrial and civil buildings, indoor and outdoor waterproof projects such as pools, canals, open-cut subways and tunnels.
Q6: What are the documents and after-sales service of bituminous waterproof membrane?

Bituminous waterproof membrane are relatively complete, including MSDS,TDS, test report, certification, etc., to help customers better understand the products, and regularly carry out some product and technical training and improve the after-sales support system.