Project Description

Builden BS201: Polymer Modified Flexible Cementitious Waterproofing Membrane

Builden BS201 2-Part Polymer Modified Flexible Cementitious Waterproofing Membrane


Product Name BuildenSeal-201: Polymer Modified Flexible Cementitious Waterproofing Membrane
Usage BuildenSeal-201 is a two part polymer modified cementitious waterproof mortar slurry comprising of a liquid polymer and a cement based mix incorporating special admixtures. It is applied to concrete and mortar to prevent water infiltration.
General Characteristic - Good adhesion to sound substrate
- Impermeable
- Improves frost and salt resistance
- Reduces carbon dioxide penetration
- Non-toxic & non corrosive
- Cost effective
Areas of Application - Water tanks
- Basement
- Car Parks
- Bathroom floor and walls
- Swimming pools
- Retaining walls
- Planter boxes
Packaging 35KG per set
(10KG Part A and 25KG Part B)
Shell Life When stored under the correct conditions, BuildenSeal-201 will have a shelf life:
Part A: 12 months
Part B: 6 to 12 months


Consistensy of Mixture Slurry
Colour of Mixture Grey
Pot life of Mixture 30 Minutes
Density of Mixture 1.65-1.75 g/cm³
Solid content of Part A 45%
Form: Part A White liquid
Form: Part B Grey powder
Binder Portland cement
Extender Graded fine silica
Resin Acrylic dispersion
Tensile Strength > 1.4MPa
Elongation At Break > 80%
Hardness (Shore D) > 20
Resistance to
water penetration
No penetration
(1.5bar for 7days)
Set to touch (at 20°C) 2 hours
Final set (at 20°C) 24 hours
Application BuildenSeal-201 must be applied at least two coats. The first coat is applied by stiff brush to cover the area evenly within 30 minutes of it being mix.
The second coat may be applied with a soft brush or roller when the first layer has become tack free after 2 to 4 hours depending on the ambient condition.
The recommended thickness of application is 1 mm per coat depending on the expected water pressure and abrasion.
The maximum thickness per application should less than 1.5 mm.
For areas which exposed to sunlight, protective topping should be installed for further enhance the durability of BuildenSeal-201.
BuildenSeal-201 is not a decorative treatment and may display signs of “blooming” after rain or in damp weather. This does not affect the performance of the coating, in any way.

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