Everbuild 825 Tecnic Silicone

EVERBUILD TECNIC® SILICONE 825

A LOW MODULUS, NEUTRAL CURE SILICONE SEALANT

PRODUCT DESCRIPTION
EVERBUILD TECNIC® SILICONE 825 is a low modulus, neutral cure, alkoxy, odourless silicone sealant that adheres to a wide range of both porous and non porous surfaces without the need for priming.

USES
Perimeter pointing internally and externally around uPVC /wood and aluminium.
Sealing and as an adhesive onto uPVC, plastic trims and components. Sealing soft metals such as lead, copper and zinc. Weather sealing and joint sealing to
pre-formed panels and curtain walling, glazing sealing and draught proofing.
Glass to glass and glass to aluminium sealing. Parapet and roof weather sealing applications.
Suitable as an expansion joint sealant.
Bedding and sealing of Insulated Glass units.

CHARACTERISTICS / ADVANTAGES
Excellent tooling and slow skinning properties for large scale construction and glazing applications.
Excellent adhesion - adheres to most common surfaces including glass, metals, plastics and wood (painted or unpainted), uPVC and polycarbonate.
Excellent external weathering properties (over many years exposure).
High viscosity non slump formula.
Resistant to fumed Hydrogen Peroxide and fumed Formaldehyde.
Shrinkage ISO10563 <5%
Tensile Modulus at 100%
Elongation ISO 8339 23°C
0.25 - 0.3 MPa
Tensile Adhesion
Strength at Break
0.5 MPa
Compressive Modulus
100% ISO 11432
0.35 MPa
Movement Factors Maximum Compression
35% Maximum Elongation 100%
(for a 20mm wide joint min 13mm max 40mm)

APPROVALS / STANDARDS
Certified to ISO11600 F25LM and G25LM.
ASTM C920 Type S, Grade NS, Class 35
CE marked under EN15651 for cold climate, façade, glazing and sanitary applications.
UL Listed

PRODUCT INFORMATION
Chemical Base Alkoxy silicone
Colour White, Black, Mid Grey, Dark Grey, Brick Red, Brown, Buff, Beige, Anthracite, Dark Anthracite RAL 7016, Magnolia, Portland Stone, Limestone White
Skin Time 30-45 mins

APPLICATION INSTRUCTIONS
PRIMER
EVERBUILD TECNIC® SILICONE 825 does not require a primer on most common surfaces, although adhesion tests are recommended prior to full scale application.
If the joint is likely to be immersed or if adhesion is poor (especially on porous surfaces) use EVERBUILD SILICONE PRIMER P1. To improve adhesion (if required) to non-porous surfaces, prime with EVERBUILD SILICONE PRIMER NP2 (advised for aluminium).
SUBSTRATE PREPARATION
Surfaces must be clean, dry and free from dust, grease and other contaminants. Remove dust with compressed air. Degrease by using a solvent soaked pad, following by wiping with a clean cloth. Following cleaning procedure and materials are recommended:
Glass Degrease with alcohol or MEK
Aluminium, light alloys and stainless steel
Degrease with alcohol or MEK
Other Metals Lightly abrade then degrease as above
Wood Lightly abrade surface then remove dust
Plastics Degrease using an agent recommended by plastics manufacturer
Concrete and other alkaline surfaces Brush and remove dust
Polyester Powder Coated Aluminium (PPCA)
Sika Cleaner P and Silicone Primer NP2