HydroSeal 103 2K

Cementitious waterproofing membrane with high adhesion that can be applied very quickly by airless spray. For reservoirs, water tanks, below ground structures, podium decks, balconies and parking areas.

Capable of resisting extremely high positive and negative water pressure, HydroSeal 103 2K forms a hard, highly alkaline coating with a degree of elasticity which has greatly enhanced chemical resistance and so is particularly suited for the protection of concrete within sulphate contaminated ground.

It has excellent resistance to the ingress of acid gases, moisture and chlorides to enhance the durability of reinforced concrete and protect highway and coastal structures from chloride attack. HydroSeal 103 2K is reinforced over static joints and at details and changes of direction with HydroSeal 912-RT.

Key Benefits

Typical Waterproofing Applications

Technical Data

Key Benefits

Very waterproof – Resistant to 10 bar positive and negative pressure.
Quick application in one coat to horizontal surfaces.
Non-toxic when cured.
Sprayable – Up to 2 m2 per minute is possible.
Hard, durable and UV-stable trafficable finish.
All year round application to damp substrate.
Can be applied at temperatures as low as 5°C.
Very low VOC content.
Very high diffusion resistance to carbon dioxide gas and chloride ions; equivalent to 100 mm of concrete cover.
Excellent adhesion to sound prepared concrete substrates and steel.
Thixotropic – can be applied at 1 mm to vertical surfaces.
High build coating of 2 mm eliminates the incidence of small defects seen within thinner membranes.

Typical Waterproofing Applications

Podium decks, balconies and car parking areas.
Concrete water-retaining structures such as water tanks and reservoirs.
Concrete earth-retaining foundation walls to both the positive and negative side.
Internal concrete surfaces of walls and rafts or slabs to earth-retained structures such as habitable basements, car parks, plant rooms and lift-pits.
Concrete temporary lay down and working areas.

Technical Data

Cured Performance	Result
Colour	Grey
Membrane thickness in one or two coats	2.0 mm
Adhesion to concrete	>2 MPa
Tensile strength	>2.5 MPa
Elongation	3 to 5%
Compressive strength – 1 day	>10 MPa
Compressive strength – 7 days	>30 MPa
Compressive strength – 28 days	>40 MPa
Hardness (28 days)	>75 Shore D
Water vapour resistance – SD value	0.91 m
Water vapour resistance – μ value	455 μ
Water vapour resistance	4.55 MNs/g
Water resistance – Positive & Negative	10 Bar
Reaction to fire classification	A2-s1
Biological resistance	DWI regulation 31 approved
Thermal compatibility	>2 MPa
UV resistance – stable but will discolour	50 Years
pH	12-14