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Xtralite Rooflights and Skylights


Xtralite Rooflights and Skylights - SpecificationXtralite

Xtralite have a wide and encompassing variety of both standard and bespoke skylight systems, incorporating designs that are up-to-date architecturally, while adhering to current legislation and regulations on daylight.

When determining which type of skylight is most appropriate, the specifier has three significant factors to consider:

  • Shape / material of skylight
  • The roof mounting
  • Ventilation required

The options available are detailed in this section of the website, dealing with each area of importance. Do not hesitate to contact our expert team for any advice or assistance, you can call us on 01276 451 555 or use the form to the right.

Xtralite Rooflights and Skylights - Shapes

The shape of your skylight is a key area of importance; this decision is largely down to personal choice. However, it is useful to remember that pyramids are difficult to climb on, therefore subject to less vandalism and usually, dome / circular skylights are used in association with pyramids with angular roofs and curved roofs.

Guide Sizes (mm)
Square Rectangular Circular (Diameter) Barrel Vaults (Width)
600 x 600
750 x 750
900 x 900
1000 x 1000
1200 x 1200
1350 x 1350
1500 x 1500
1800 x 1800
1050 x 1050
600 x 900
600 x 1200
600 x 1500
600 x 1800
600 x 2400
900 x 1200
900 x 1350
900 x 1500
900 x 1800
900 x 2400
1000 x 1500
1000 x 2000
1200 x 1500
1200 x 1800
1200 x 2400
1800 x 2400
600
900
1200
1500
1800
600
900
1200
1500
1800
2100
2400

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Dome XL 102 Pyramid XL 100 Circular XL 102 c
Dome XL 102 Pyramid XL 100 Circular XL 102 c
Hexagonal XL 104 Northlight Wedge XL 107 Hemispherical XL 253
Hexagonal XL 104 Northlight Wedge XL 107 Hemispherical XL 253
Thermoformed Barrel Vault XL 101 Continuous Pyramid XL 100 c
Thermoformed Barrel Vault XL 101 Continuous Pyramid XL 100 c

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Clear Bronze Diffused
Clear Bronze Diffused
High light transmission.

Allows full vision of views and objects.

Can look dirty from below if not cleaned regularly.

Light glare inside the building can be a consideration on sunny days.

Reduces light transmission into a building.

Reduces solar heat gain.

Maximises privacy.

Prevents vision of views and objects.

Good light transmission into a building.

Diffuses light transmission and so avoids glare and shadows.

Opal available as an option

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Ventilation Performance Chart
Rooflight Size
(mm)
Permanent*
(cm2)
Hit & Miss*
(cm2)
Controlled Louvre*
(cm2)
Hinged**
(cm2)
600 x 600 80 46 240 0.36
750 x 750 80 46 240 0.45
900 x 900 160 92 480 0.54
900 x 600 160 92 480 0.45
1050 x 1050 160 92 480 0.63
1200 x 1200 160 92 480 0.72
1350 x 1350 160 92 480 0.81
1500 x 1500 160 92 480 0.90
1800 x 1800 240 138 720 1.08
1200 x 600 160 92 480 0.54
1200 x 900 160 92 480 0.63
1350 x 900 160 92 480 0.68
1500 x 900 160 92 480 0.72
1500 x 1200 160 92 480 0.81
1800 x 900 320 184 960 0.81
1800 x 1200 320 184 960 0.90
1800 x 1200 320 184 960 0.90
2000 x 1000 320 184 960 0.90
2400 x 1200 320 184 960 1.08

 

Mechanical Ventilation Performance Chart
Fan Options Air Displacement
Litres/sec
Volume
m3/h
Sound
db(A)
150 mm power fan in dome 65.3 235 37.5
225 mm power fan in dome 133 480 35.6
Side mounted in kerb 64 230 40.0

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Skylights are also used as ventilators, extracting stale air and replacing with fresh air. The performance level of an Xtralite skylight system depends upon the individual product. There is a range of different systems available in the Xtralite collection; the table below compares the performance of each Xtralite product.

Mechanical Ventilation

A power fan can be fitted to the skylight unit in cases where a more robust form of ventilation is required, i.e. when the performance of quantifiable air exchange is needed.

There are two ways of fitting the power fan:

  1. A 150mm or 225mm power fan can be built into the polycarbonate glazing skins.
  2. A smaller fan can be mounted into the sidewall of the kerb. 150mm clear upstand height to the base of the fan unit is required, so the kerb should be higher.
Ventilation Options
Permanent Vent XL 53 Controlled Louvre on Adapter Kerb XLAK 90 Manual Hinge Vent on Adapter Kerb XLAK 129
Permanent Vent XL 53 Controlled Louvre on Adapter Kerb XLAK 90 Manual Hinge Vent on Adapter Kerb XLAK 129
This option is permanently open, an external shroud shields the elements. This cannot be tampered with. Louvre inset into sidewall of unit, this can be manually operated to provide anything from 'trickle' to 'full on'. The whole skylight top hinges open to allow ventilation through opening large vent areas.
Electrical Hinge Vent XL 63 Background Vent on PVCU Kerb XLPVCU 03 Powervent XL 66
Electrical Hinge Vent XL 63 Background Vent on PVCU Kerb XLPVCU 03 Powervent XL 66
The whole rooflight top hinges open to allow ventilation through opening large vent areas. Low level ventilation for 'background' air change. Used where a high level of ventilation is required and can be mounted in upstand or in glazing. Please refer to ventilation performance chart.

Xtralite are able to supply a comprehensive variety of kerbs to accompany all shapes available, linking to most roof systems and types.

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