Sika Building Trust

Sikalastic -625N Locally-Reinforced System

Part of Sikalastic -625N Fully-Reinforced System

Manufacturer: Sika Building Trust 

Materials: Polyurethane 

The Sikalastic -625N Locally-Reinforced System consists of the following components:
• Sikalastic -625N — a one-part, moisture-triggered, aliphatic based polyurethane
• Sika Concrete Primer — a two-part primer for concrete substrates
• Sika Concrete Primer LO — a two-part, low odour primer for concrete substrates
• Sika Metal Primer — a two-part primer for the treatment of previously untreated metal surfaces and for spot
priming of areas of corroded metal after preparation Sika Bonding Primer — a primer for concrete substrates
• Sika Bonding Primer — a primer for concrete substrates
• Sikalastic Flexistrip — a 50 mm square self-adhesive patch for use over bolt and fixing heads
• Sika Flexitape Heavy — a nylon mesh for use at fibre-cement and metal substrate joints
• Sika Joint Tape SA — a polymeric, self-adhesive rubberised tape with a woven polyester face, for use at fibrecement and metal substrate joints, and over bolt and fixing heads
• Sikafloor -701 — a two-component epoxy primer, levelling mortar and mortar screed binder.


BBA logo

Number: 16/5294 PS4
Issue date: 15/07/2022

ETA logo

Number: 20/1023
Issue date: 20/12/2020

Approved for use on


Flat Roofs 

The Sikalastic -625N Locally-Reinforced System is satisfactory for use as a locally reinforced system on existing fibre
cement (including asbestos) and plastisol-coated metal roofs with a maximum pitch of 70° and with limited access.

Substrate


Concrete Insulation Boards Mastic Asphalt Plastic 

The Sikalastic -625N Locally-Reinforced System is satisfactory for use as a locally reinforced system on existing fibre
cement (including asbestos) and plastisol-coated metal roofs with a maximum pitch of 70° and with limited access.

Durability


10 Years 

Under normal service conditions, the system will achieve a service life of at least 10 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 in flat and slope position to DD CEN/TS 1187 : 2012, Test 4, and classified in accordance with BS EN 13501-5 : 2016, the following systems 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 system(1) comprising a 6 mm calcium silicate board, a base coat of Sikalastic -625N at an application rate of 0.5 l·m–2 and a top coat of Sikalastic -625N at an application rate of 0.5 l·m–2(1)
• a system(2) comprising a 0.7 mm plastisol coated metal sheet, a base coat of Sikalastic -625N at an application
rate of 0.5 l·m–2 and a top coat of Sikalastic -625N at an application rate of 0.5 l·m–2.

(1) Fire test and classification reports, reference 19938A and 19938B respectively, conducted by Warringtonfire. Report available from the Certificate holder.
(2) Fire test and classification reports, reference 20073A and 20073D respectively, conducted by Warringtonfire. Report available from the Certificate holder

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


Certified Products

The following products are also covered by the same certification:

  • Downloads

Sika Building Trust

Sika House
Miller Street
Preston
Lancashire
PR1 1EA

T : 01772 259781

Website disclaimer:

“The information contained in this Website is for general information purposes only. The information is provided by manufacturer members and their accreditation certifications and while we endeavour to keep the information up to date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with regard to information or products. Any reliance you place on such information is therefore strictly at your own risk.

LRWA Is not an accreditation body and does not test products or have a role in determining whether a product or system is fit for purpose. An agrément certificate is only issued for a successful product or system following a detailed assessment including both laboratory testing and inspections by the certificate provider.”