Service duct waterproofing compound.
A single component, highly flexible compound used for the sealing of service sleeves against penetration of ground water and gases.
The product is effective at sealing around numerous services within the sleeve, even where significant water ingress exists.
The unique compound never cures, remaining permanently flexible, allowing for new services to be simply pushed through the existing repair and resealed.
The product swells by up to 10% when in contact with water and will seal a 100 mm DN service duct against up to 10 m of water pressure and will form a very effective seal against gas and water vapour.
It adheres to both wet and dry surfaces of concrete, mortar and plastic without the need of a primer.
The swelling characteristics do not create any stresses to the service joint or the structure. Once the service sleeve is sealed, Newton Stopaq FR Mortar is used to cap the installation. Stopaq FR Mortar is a fibre reinforced non-shrinking fire-resistant mortar specially produced for use with Newton 308 Stopaq that can receive new cables or conduits without the use of power tools.
Consult manufacturer's literature for relevant surface preparation.
Features and benefits:
To ASTM D570.
Fire resistant non-shrinking mortar.
Newton 308 Stopaq (SX308)
1.2 to 1.5.
Pack size - Cartridge
Moisture Absorption (ASTM D570)
10 to 40 mm.
5 to 35 °C.
10 to 35 °C.
-20 to +35 °C.
-20 to +95 °C.
Pot life - 20 °C
Final curing time
- 20 °C 24 hours.
Hardness - 48 hours cured
Natural Gas (methane) 100 mbar.