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Everbuild Tecnic Silicone 825 - Bulk Buy
Everbuild Tecnic Silicone 825 - Bulk Buy
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Everbuild Tecnic Silicone 825 – Bulk Buy

Everbuild Tecnic Silicone 825

A low modulus, neutral cure silicone sealant

Everbuild Tecnic Silicone 825 is a low modulus, neutral cure, alcoxy, low odour silicone sealant that adheres to a wide range of both porous and non porous surfaces without the need for priming.

  • 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).
  • Resistant to fumed Hydrogen Peroxide and fumed Formaldehyde once fully cured.
  • High viscosity non slump formula.
  • Colours: White, Black, Mid Grey, Dark Grey, Brick Red, Brown, Buff, Beige, Anthracite, Dark Anthracite RAL 7016, Magnolia, Portland Stone, Limestone White
  • Unit size: 380mL cartridge ; 600mL  foil pack

 

£60.79 – £107.60 +VAT

£107.60 +VAT
£60.79 +VAT
£ 102.90

Everbuild Tecnic Silicone 825 extended information

Usage

  • Perimeter pointing internally and externally around PVCu /wood and powder coated aluminium.
  • Sealing and as an adhesive onto PVCu, 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.
  • Ideal for precast concrete and masonry products, including brick, natural stone and terracotta.
  • Suitable as an expansion joint sealant.
  • Bedding and sealing of Insulated Glass units.
Shrinkage ISO10563<5 %
Tensile Modulus at 100% Elongation ISO 8339 23°C0.25—0.3 MPa
Tensile Adhesion Strength at Break0.5 MPa
Compressive Modulus 100% ISO 114320.35 MPa
Movement FactorsMaximum Compression 35 % Maximum Elongation 100 %
(for a 20 mm wide joint min 13 mm max 40 mm

Approvals / Standards

  • Certified to ISO11600 F25LM and G25LM.
  • UKCA and CE marked under EN15651 for cold climate, façade, glazing and sanitary applications.
  • ASTM C719 Class 35
Everbuild Tecnic Silicone 825 product information
Chemical BaseAlcoxy silicone
Packaging380 ml cartridge
600 ml foil pack
Shelf Life12 months from date of manufacture.
Storage ConditionsStore in original unopened containers between +5 °C and +25 °C. Storage outside these parameters may dramatically reduce shelf life.
ColourWhite, Black, Mid Grey, Dark Grey, Brick Red, Brown, Buff, Beige, Anthracite, Dark Anthracite RAL 7016, Magnolia, Portland Stone, Limestone White
DensityColours: 1.33 - 1.37 g/cm3
Shore A Hardness22-32
Elongation at break>200 % (ISO 8339, +23 °C)
Movement Capability(ASTM C719) ±35 % (ISO11600) ±25 %
Elastic Recovery>70 % (ISO 7389)
Thermal Conductivity0.10983 W/mK
Service Temperature-50 °C to + 150 °C
Joint DesignMaximum joint width 50 mm, max depth 50 % of joint width
Joint widths are calculated as in BS6213:
Width=(M x 100)/F + M

Where M = movement and F = movement accommodation Factor For maximum movement accommodation, it is recommended that:

1. The sealant joint depth should be no less than 5 mm.

2. Joint depth should be 5 mm for joints up to 10 mm wide.

3. Joints above 10 mm in width should be half the width in depth up to 20 mm and minimum 10 mm for wider joints.
Joint depth may be adjusted to the correct size using EVERBUILD JOINT BACKER ROD.
Yield3 linear metres 9 x 9 mm fillet joint (380 ml cartridge)
Ambient Air Temperature+5 °C to +40 °C
Curing Timemm/1 day approx 2 mm/3 days approx 6 mm/7 days approx 9
Skin Time30-45 minutes
Limitations
  • Do not use in conjunction with bitumen asphalt, neoprene and certain organic elastomers.
  • Do not use in the manufacture of aquariums.
  • Do not use on substrates that bleed oil, solvents or plasticisers.
  • Non overpaintable.
  • Not recommended for use as a mirror adhesive.

Everbuild Tecnic Silicone 825 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 SIKA PRIMER 3N. To improve adhesion (if required) to non-porous surfaces, prime with Sika Aktivator 205.

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:

GlassDegrease with alcohol or MEK
Aluminium, light alloys and stainless steelDegrease with alcohol or MEK
Other MetalsLightly abrade then de- grease as above
WoodLightly abrade surface then remove dust
PlasticsDegrease using an agent recommended by plastics manufacturer
Concrete and other alkaline surfacesBrush and remove dust
Polyester Powder Coated Aluminium (PPCA)Sika® Cleaner P and Sika® Aktivator-205

Everbuild Tecnic Silicone 825 APPLICATION METHOD / TOOLS

We recommend following Sika Method Statement; Facade Joint Sealing for good working practice

CLEANING OF TOOLS

Uncured sealant – white spirit. Cured sealant – mechanically

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