SLV External
SLV External is a vermiculite-based sprayable cement mortar, specially designed for external steel and concrete structures. With an attractive bulk density and exceptional performance in terms of thickness and fire resistance, SLV External is perfectly suited for various outdoor applications.

Applications
SLV External by NESTAAN is used in three sectors:
Construction
SLV External can be used in areas exposed to extreme weather conditions, where high mechanical loads are expected or where damage must be avoided.
- Load-bearing structures
- Uncovered load-bearing structures such as columns
- Various constructions
Petrochemicals
SLV External exceeds the strict standards applicable in the petrochemical sector and has proven suitable for passive fire protection in various facilities.
- Refineries
- Structural protection of lines
Public infrastructure
SLV External meets the RWS standard and provides public infrastructure concrete structures with passive fire protection in a quick and economical manner.
- Road and rail tunnels
- Larger viaducts
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Standardisation
SLV External is a non-combustible product, class A1, with fire resistance of up to 360 minutes. It meets the RWS standard and protects structures against temperatures of up to 1350°C.
SLV External has successfully passed several tests. In addition to comprehensive testing programmes such as EN, BS, UL, Jetfire, and UL, SLV External has been exposed to extreme temperature fluctuations, salts and fog, intensive thawing and freezing cycles, as well as moulds and algae.

Product features
SLV External is a safe, durable, and asbestos-free product that has the appropriate density for many outdoor applications. SLV External ensures a long service life and can be applied quickly and easily to steel and concrete, with or without primer or coating. SLV External requires virtually no maintenance and can be covered with a fire-retardant finish available in different colours.
Composition
SLV External, largely composed of Belgian raw materials, consists of expanded vermiculite, a durable expanded mineral that acts as a thermal barrier, combined with quality cement binders, mineral fillers, and additives.
Production
SLV External is a fully pre-mixed product manufactured in our state-of-the-art, fully automated production facility in Blandain, in accordance with the strict quality standards of ISO 9001 certification.
Certificates
For SLV External, NESTAAN can present various certificates:
- ETA certificate allowing CE marking by Element / Warringtonfire
- UL1709
- BS476p21: 1987 & HC-curve
- EN13501p1
- ISO9001: 2015
- RWS:2008 & 2020
- ASTM-E119
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Address
Z.I. Tournai Ouest II
Rue du Bois des Hospices 2
7522 Blandain
Belgium
Contact information
infonestaan@nhb.be
+32 69 77 83 20
VAT BE 0477.157.153
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