SpECtite CW100


SpECtite CW100 is a two-component polymer
modified cementitious coating. The product may be
trowel, brush or spray applied to provide a flexible,
waterproof barrier

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Technical Details

SpECtite CW100 may be used where there is a requirement to exclude water from a building or retain it within a structure. The material is particularly effective where there is a requirement for crack bridging capability, typically in the following situations:
• Potable water containers, tanks and reservoirs
• Swimming pools and silos
• Waterproofing planter boxes
• Waterproofing new and existing buildings
• As a backing to marble and granite to prevent water ingress and thus alleviate surface staining
• Protection against brackish water
• Coating seawater channels
• Wet Areas, Toilets, Balconies & Loggia
• Withstands hydrostatic pressures
• Good bond strength to concrete and masonry
• Good crack bridging capabilities even after long periods of immersion
• Long pot life even at high temperatures

Pot life @ 25°C 

45 mins 

grey, off-white 

Tensile strength (ASTM D412) 

0.8 ± 0.2 MPa 
Water Absorption 


Adhesion to concrete 

0.8 ± 0.2 MPa 

<1.0 g/L 

Minimum application Temperature 


Note: SpECtite CW100 meets the requirement of BS 6920 to be used in contact with potable water. 

It is essential that adequate preparation is carried out prior to the application of SpECtite CW100.

The substrate must be clean and completely free from contaminants including grease, oil and loose material. Any repairs to the substrate should be carried out using SpECbuild cementitious repair mortars.

SpECtite CW100 is supplied as a two component pack consisting of a liquid component and a powder componentThe product cannot be mixed by hand. The liquid should be poured into a 25 litre plastic or metal drum. The powder should be added slowly whilst mixing with a spiral paddle attachment on a slow speed electric drill. Mixing should continue until the product is lump free and for a minimum of 5 minutes.

The prepared substrate should be dampened using a fine water spray. Care should be taken with porous substrates as more extensive pre-soaking will be required. Any free water on the surface should be removed immediately prior to applying SpECtite CW100.
While the substrate is damp but free from standing water, apply the mixed product a minimum of 2 coats by medium hard short bristle brush, trowel or roller checking that the first coat is at a minimum wet film thickness of no more than 1.5mm and no less than 0.5mm. The product should always be finished in one direction.

The second coat should be applied as soon as the first coat is set hard, normally after a minimum of 3 hours @ 25°C and longer at lower temperatures. This second coat should again be finished in one direction (at 90° to the first coat).
The total thickness should be 2mm on walls and 3mm on floors.
SpECtite CW100 is supplied in 22.1kg two part packs.

A complete mixed pack will cover approximately 11.0m² at 1.0 mm thickness depending on the substrate profile
Contact us for more info.

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SpECtite CW100

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