Sikalastic – 625N Fully Reinforced System

Approved for use on

Flat Roofs 

The Sikalastic -625N Fully-Reinforced System is satisfactory for use as a system on flat roofs with limited access.

Substrate

Concrete Insulation Boards Mastic Asphalt Plastic PUR or PIR Insulation Reinforced Bituminous Membranes Steel 

The Sikalastic -625N Fully-Reinforced System is satisfactory for use as a system on flat roofs with limited access on:
• concrete (primed and unprimed)
• asphalt
• bituminous roofing membranes, including mineral surfaced
• galvanized steel
• non-mineralised bitumen roofing membranes on plywood
• liquid-applied bituminous roof coating
• aluminium paint
• polyisocyanurate (PIR) foam insulation boards in conjunction with a specified carrier membrane
• existing polyurethane roofs

Durability

25 Years 

Under normal service conditions, the system will achieve a service life of at least 25 years.

Installation Requirements

Installation of the system must be carried out only by specialist roofing contractors trained and approved by the Certificate holder.

Puncture Resistance

P3 - accessible for maintenance of plant and equipment and to pedestrian traffic

Least compressible (eg concrete)

Fire Safety

When tested to DD CEN/TS 1187 : 2012, Test 4, and classified in accordance with BS EN 13501-5 :2016, the following specifications achieved a BROOF(t4) classification and so are unrestricted with respect to proximity to a boundary by the documents supporting the national Building Regulations:
• a 12 mm thick primed plywood substrate, 0.6 mm thick self-adhesive vapour control layer, a 80 mm thick glass faced, polyisocyanurate insulation board adhered with a polyurethane adhesive and primed, a 0.6 mm thick self adhesive carrier membrane, a base coat of Sikalastic -625N at an application rate of 1.0 l·m–2, a layer of Sika Reemat Premium, and a top coat of Sikalastic -625N at an application rate of 1.0 l·m–2(1)
• a system comprising a 6 mm calcium silicate board, a 2.6 mm thick SBS modified bitumen roofing membrane, a base coat of Sikalastic -625N at an application rate of 1.0 l·m–2, a layer of Sika Reemat Premium and a top coat of Sikalastic -625N at an application rate of 1.0 l·m–2(2)
• a system comprising a 6 mm calcium silicate board, a base coat of Sikalastic -625N at an application rate of 1.0 l·m–2, a layer of Sika Reemat Premium and a top coat of Sikalastic -625N at an application rate of 1.0 l·m–2(3).
(1) Fire test and classification reports, reference 19823B and 19823C respectively, conducted by Warringtonfire. Report available from the Certificate holder.
(2) Fire test and classification reports, reference 19823F and 19823G respectively, conducted by Warringtonfire. Report available from the Certificate holder.
(3) Fire test and classification reports, reference 19823K and 19823L respectively, conducted by Warringtonfire. Report available from the Certificate holder.

The classification and permissible areas of use of other specifications should be confirmed by reference to the
requirements of the documents supporting the national Building Regulations.