SGG COOL-LITE SKN / SKN II

DESCRIPTION

SGG COOL-LITE SKN is a solar control glass range which gives excellent selectivity while retaining a neutral appearance. This range offers four different levels of performance, depending on a project's specific requirements.

By blocking up to 2/3 of heat by reflecting it to the outside, this range can be for use in residential or commercial buildings alike, either for façades or overhead glazing. Due to the unique properties of the coatings, they are ideally suited to applications requiring annealed and toughened or heat-strengthened glass.

 

PRODUCT APPLICATION

Offices and commercial buildings
• Industrial buildings
• Hotels and restaurants
• Schools and hospitals
 

SGG COOL-LITE can be installed in many glazing applications:

- Curtain walling
- Exterior structural sealant glazing
- Exterior bolted glass assemblies
- Double-skin applications
- Cladding of external walls
- Overhead and atria glazing

The most appropriate glass is selected using 2 criteria:

• Solar control performance: relative to the amount of direct sunlight, the orientation of the facade and the area to be glazed, the specifier can select the best compromise between the light transmittance (LT) and the amount of solar energy entering the building (solar factor g). Overhead glazing should generally have a much lower light transmittance than facades.

• Appearance (when viewed from the exterior): the aesthetic appearance of the glass (colour, intensity, reflection) depends on 4 factors:

- Orientation of the building
- Surrounding environment
- Glare
- Amount of direct sunlight

 

ADVANTAGE

  • Energy savings for air conditioned buildings, in both cooling and heating modes
  • Excellent U-value
  • High degree of neutrality in both transmission and reflection
  • Low outside and inside light reflectance
  • High light to solar gains (selectivity)
  • Green buildings rules compliance
  • Availability of post-temperable variations enabling a quick turnaround for tempered double glazed units

 

RANGE

The following substrate glasses can be used for SGG COOL-LITE coated glass:

  • SGG PLANICLEAR clear glass
  • SGG DIAMANT extra clear glass
  • SGG PARSOL body-tinted glass


Using an extra clear glass emphasises the neutrality and transparency of high performance solar control glasses.
Using a body-tinted base substrate will offer a vibrant reflected colour.
A neutral glass always has a slight greenish, bluish, or greyish residual reflected colour. The neutrality of the glass must be checked using a sample of the proposed glass in its intended location.
Please contact SAINT-GOBAIN GLASS for further details.

 

New product

SGG COOL-LITE SKN: the performance of the most frequently used references is given in double-glazed units, combined with a SGG PLANICLEAR clear glass on the inner pane.
 

Processed Product Variations

The main function of SGG COOL-LITE is solar control, after processing it can be used in a double-glazed unit and combined with other Saint-Gobain Glass products to provide multifunctional glazing, such as SGG STADIP SILENCE for additional acoustic insulation.

Double glazing

 SGG COOL-LITE SKN must be edge-deleted.
• The coating is optimised for face 2 of a double-glazed unit.
 SGG COOL-LITE SKN coatings have integral thermal insulation properties, therefore a low-emissivity glass is not required on the inner pane
 Toughened glass, heat-strengthened glass, heat-soak test treatment
 SGG COOL-LITE SKN are available in “to be toughened versions” which is shown with the use of ‘II’ after the product code i.e. SGG COOL-LITE SKN 176 II. These products must be toughened or heat strenthened before installation to match with the appearance and aesthetics of the corresponding annealed SGG COOL-LITE SKNs.

Please contact SAINT-GOBAIN GLASS for details

• Heat treatments do not alter either the colour or the performance of SGG COOL-LITE SKN coated glasses.
• When SGG COOL-LITE SKN glass has been toughened or heat-strengthened, it can no longer be cut, edgeworked or drilled. These processes must always be carried out before toughening or heat strengthening.

Curved glass
 SGG COOL-LITE SKN coatings can be curved, though the dimensions, curving radius, thickness and curving process can all have an impact on the glass. If you require curved SGG COOL-LITE SKNs please contact Saint-Gobain Glass.
 

Laminated glass

 SGG COOL-LITE SKN glass can be laminated. The coating is located on face 4 of the laminated glass (on the outside of the 2nd sheet).
• It is not possible to laminate SGG COOL-LITE SKN with the coating in contact with the PVB currently.

Edgeworking and drilling

 SGG COOL-LITE SKN glass can only be edgeworked or drilled using machinery designed for low-emissivity coated glass.

Enamelling

SGG COOL-LITE SKN can not be enamelled currently.


Screen-printing

 SGG COOL-LITE SKN coatings cannot be screen-printed.

 

PROCESSING CAPABILITIES

In facades, SGG COOL-LITE must be glazed with the coating on face 2 (facing towards the interior of the building).
 SGG COOL-LITE must be glazed in accordance with current national standards. The setting and location of the glass, the permitted deflection for the frames of insulated glass units and the dimensions of channels are not specific to SGG COOL-LITE glass.
 SGG COOL-LITE glass can be installed in exterior bolted glass assemblies.
 SGG COOL-LITE glass can be installed in exterior structural sealant glazing.

 SGG COOL-LITE SKN coatings are always edge-deleted and must be assembled into a double-glazed unit. As a result the appearance around the edge must be considered.
• Glass processors and installers must check that all mastics and sealants are compatible with the coating, both for assembly into double-glazing and for traditional installation or use in exterior structural sealant glazing.

Notes

• Like all coated glass, SGG COOL-LITE may distort reflected images to some extent, especially if it is toughened, installed into a double-glazed unit, channel-glazed, etc. The appearance of the glass may show some variations inherent to the product, depending on the distance and angle of observation and the ratio of internal and external lighting of the building.
• Likewise, as with all coated solar control glasses, slight variations in the reflected colour are considered to be normal.

Opacified glass

• Avoid all contact with any harsh products (solvents, acids, alkalis, etc) during storage, transportation and installation, as this may cause damage to the opacifier.
• Openings should be made at the bottom of frames to allow the channels to drain. These openings must be created in such a way as to avoid any water entering. They must be checked regularly to ensure they are operating correctly.
• The glass must be channel-glazed on all 4 sides and calculated accordingly. For other systems ask our technical department for details.
• The edges of opacified SGG COOL-LITE glass must not be exposed to and be protected from adverse weather conditions (eg: using a metal profile).
• Corrosive materials or those which may give off corrosive fumes (acid, ammonia, cement water, acetic silicones, etc) may damage the opacifier. These must not be placed near the glass (if in any doubt, please contact SAINT-GOBAIN GLASS)

Non-opacified glass

• Non-opacified glass must only be used after consultation with our technical department.
• Heat-strengthened or toughened glass must be positioned in front of a uniform background so that the structures they are covering do not show through.
• If the light transmittance of the glass is higher than 14%, an opacified glass must be used.

Double-glazed units

• The use of double-glazed glass units in opaque spandrel panels or in front of an opaque surface is only possible if it is permitted by UK regulations.
• In all cases, this use must comply with the technical rules concerning: the width of the cavity, thickness of the glass, toughening requirements etc. Please contact SAINT-GOBAIN GLASS for assistance.

Installation of pre-fabricated panels

• The frame in which the spandrel panel assembly is placed must be drained. In the case of a ventilated assembly, the frame must allow for ventilation of the spandrel panel.
• The various components of the spandrel panel assembly are supported on the same setting and location elements.
• The system for fixing the assembly must never cause any shear stress either in the assembly or in the seal bonding the glass onto the frame, either as a result of external stresses or as a result of the differential expansion of the components.
For further information, see the document entitled " SGG COOL-LITE, Instructions for use".

Find out more

Technical support

Questions are grouped by common theme , so select the area which you require

Related benefits

Related applications