Sikalastic® 618

sikaSikalastic®-618 is a single component, cold-applied, moisture-triggered polyurethane membrane. It cures to form a seamless, durable and weather-resistant waterproofing solution for exposed roof areas.

The images show a flat roof repair carried out in our home town of Herne Bay. We installed the roof with a mechanically fixed perimeter clipping detail, designed by us, dressed onto the roof tiles.  Sika 618 is an excellent alternative to lead, and gives a good aesthetic appeal and allows for traditional detailing such as “woodcore roll”.

20131224_135620 Uses

* Water-proofing of flat and pitched roof structures

* Treatment of new construction and refurbishment of existing structures

* Applicable to existing concrete, roofing felt, brickwork.


* Single component, ready to use
* Easy and quick application of reinforced roofing systems with Sika Reemat
* Economic – provides a cost efficient life cycle extension of failing roofs
* Seamless membrane based upon moisture-triggered chemistry
* Vapour permeable and remains flexible even at low temperatures.



Ballman Roofing Contractors are so confident in this product and skilled in its application that we will provide a 25 year guarantee for a new roof installation covered with Sika 618 and in the event of a repair, we will provide a 10 year guarantee.

Sika 618  is slightly more expensive than a traditional flat felt roof, but with the 25 year maintenance-free promise on a new roof, we believe the product is a sound investment and will add real value to a property.