Description
Estoproof 3P & 4P is a high-performance APP modified bituminous torch-applied waterproofing membrane reinforced with rot-proof polyester spun-bonded fiber. The underside is finished with a light polyethylene foil to enhance flame-torching efficiency, reduce gas consumption, and protect the rolls during transport, handling, and storage. It meets ASTM D6222 specifications for APP modified bituminous sheet material using polyester reinforcement.
Estoproof 3P & 4P* = 1m x 10m roll
Estoproof Primer WB = 20 L pail
• ASTM D6222
• ASTM D36
• ASTM G53
• ASTM D 146
• BS1881 Part122:1983
Estop offers a comprehensive range of high performance,
high quality of repair product for both new and existing
concrete surfaces. In addition, the company offers a
technical support package to specifies, end-users and
contractors, as well as on site technical assistance.
Estoproof 3P & 4P membrane should be stored in original unopened packaging in dry conditions.
Estoproof 3P & 4P have a shelf life of 24 months. However, membrane shall be stored vertically and not stacked.
Protection gloves are necessary when using the gas torch to install Estoproof 3P & 4P membrane.
Application Instruction
Surface Preparation
For R.C. flat roofs, ensure a minimum 1:120 gradient. Use a base screed (1:4 cement-sand mix). Clean substrates thoroughly. Install mortar angle fillets at critical right-angle bends before applying Estoproof 3P & 4P. Concrete must be at least 21 days old before application.
Application Methods
Primer Application
Apply Estoproof Primer WB to the surface area apply it at the rate of 3m2/litre, depending on the porosity of the surface, and allowed to dry completely before application.
Membrane Application
(A) Non-Expose System
Estoproof 3P & 4P can be loosely laid or fully bonded. Torch apply with side laps of 50-75mm and end laps of 100-150mm. Ensure all laps are fully heat welded and finished with a heated spatula or propane gas torch for adhesion.
Membrane Application
(B) Expose System
Estoproof 3P & 4P Slated (mineral finished) are
recommended to be used as an exposed
waterproofing system where the protective screed is
not required
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