Colas Jointfill A2 Rubberised Bitumen

Jointfill A2 is designed for sealing horizontal expansion joints on concrete and asphalt pavements where low movement is expected, while preventing the entry of water and other materials. It recovers well while not being heavily affected by temperature.
Jointgrip is recommended instead of Jointfill for overbanding due to its hugely superior anti-slip properties.

The recommendations given in Appendix G of BS 2499:1973 should be followed to achieve the correct performance. More thorough advice is given in BS2499:Part 2:1993 Hot applied joint sealant systems for concrete pavements.
Jointfill requires the joints to be cleaned much more thoroughly than standard bitumen products and must be cleaned by a hot compressed air lance or by grit blasting. Damaged joints must be repaired using an epoxy mortar approved by Colas. Joints should be primed with CP Primer before applying Jointfill A2.
Colas Jointfill A2 should be heated indirectly and agitated in a purpose-built sealant preheater unit with thermostatic control. Ensure that the temperature does not exceed 190°C. The heater unit should be oil-jacketed.
The material should then be pumped into the joint, or poured using a pitching iron, melter pourer or bucket and ‘V’ mould, with the minimum loss of temperature. Joints should be sealed to a level of at least 3mm below the surface.

Application Properties
Pouring temperature – 170°C/180°C
Safe heating temperature – 190°C

Jointfill is supplied in 20kg plastic lined paper bags which need to be kept in a dry store under cover and the paper removed prior to heating.

Safe Handling Precautions (When Hot):
Wear suitable protective clothing (heat resistant gauntlet gloves, overalls, protective footwear, face visor)
DO NOT allow water to contact hot material
DO NOT exceed maximum safe heating temperature
If molten material contacts skin:
– DO NOT attempt to remove
– Immerse affected area in cold running water
– Seek medical advice without delay
This product is hazardous for transportation when carried at temperatures above 100°C.