Xtralite Rooflights and Skylights

Xtralite Rooflights and Skylights - Specification

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

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

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

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

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
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
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.