The UK's Leading Supplier of Rooflights
Xtralite Rooflights

Xtralite Rooflights

Xtralite Rooflight Systems

Xtralite Rooflights Logo

Xtralite have a comprehensive range of bespoke and standard rooflight systems to accommodate modern architectural design, the appropriate legislation and daylight requirements.

The specifier has three key issues to consider when assessing what type of rooflight is required

1. The rooflight shape/material

2. The ventilation requirement

3. The roof mounting

This section of the website takes you though each of these key areas detailing the options available. For further help and assistance please contact us via the contact form above.

Shape

The specification decision regarding shape is mainly a personal viewpoint though the following should be considered:

  • Pyramids tend to be less likely to suffer from vandalism as they are difficult to climb on.
  • In the main, circular/dome rooflights are used in conjunction with curved roofs and pyramids with angular roofs.
Guide Sizes (mm)
Square
Rectangular
Circular
(Diameter)
Barrel Vaults
(Width)
600 x 600
600 x 900
900 x 1800
600
600
750 x 750
600 x 1200
900 x 2400
900
900
900 x 900
600 x 1500
1000 x 1500
1200
1200
1000 x 1000
600 x 1800
1000 x 2000
1500
1500
1200 x 1200
600 x 2400
1200 x 1500
1800
1800
1350 x 1350
900 x 1200
1200 x 1800
000
2100
1500 x 1500
900 x 1350
1200 x 2400
000
2400
1800 x 1800
900 x 1500
1800 x 2400
000 000
1050 x 1050
000
000
000 000

 

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

High light transmission.

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

Can look dirty from below if not cleaned regularly.

Allows full vision of views and objects.

Bronze
Xtralite Bronze Finish Rooflight

Reduces solar heat gain.

Reduces light transmission into a building.

Diffused
Xtralite Diffused Finish Rooflight

Maximises privacy.

Good light transmission into a building.

Diffuses light transmission and so avoids glare and shadows.

Prevents vision of views and objects.

Opal available as an option

Ventilation Performance Chart

Rooflight Size
 

 

Permanent*

Hit and Miss*

Controlled
Louvre*

Hinged**

cm²

cm²

cm²

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

Volume

Sound

Litres/sec

m³/h

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

 

Rooflights can be used to provide ventilation, extraction of stale and the introduction of fresh air. Xtralite provide a range of differing systems with varying performance levels—see table

Mechanical Ventilation

There are occasions when a more positive form of ventilation with a known and quantifiable air exchange performance may be required, under such circumstances a power fan can be fitted to the rooflight unit.

There are two methods for achieving this:

  • With a power fan unit built into the polycarbonate glazing skins. This option allows either a 150 mm or 225 mm power fan unit to be specified.
  • With a smaller fan mounted into the side wall of the kerb. In such an arrangement the kerb will necessarily be higher, to provide the required 150 mm clear upstand height to the base of the fan unit.

 

Ventilation Options
Xtralite Permanent Ventilated Kerb
Permanent Vent XL 53

As the name suggests, this option is permanently open and shielded from the elements by a external shroud which cannot be tampered with.

Xtralite Controlled Louvre Ventilated Kerb
Controlled Louvre on Adapter Kerb XLAK 90

Louvre inset into side wall of unit, this can be manually operated to provide anything from ‘trickle’ to ‘full on’

 

Xtralite Manual Hinged Ventilated Kerb
Manual Hinge Vent on Adapter Kerb XLAK 129

The whole rooflight top hinges open to allow ventilation through opening large vent areas

Xtralite Electrically Hinged Ventilated Kerb
Electrical Hinge Vent XL 63
 

The whole rooflight top hinges open to allow ventilation through opening large vent areas

Xtralite Background Ventilated Kerb
Background Vent on PVCU Kerb XLPVCU 03

Low level ventilation for ‘background’ air change.

Xtralite Power Ventilated Kerb
Powervent XL 66

Used where a high level of ventilation is required and can be mounted in upstand or in glazing. Please refer to ventilation performance chart.

For details of the Xtralite X-One Rooflight click here
For details of the Xtralite X-Two Rooflight click here
For details of the Xtralite X-Three Rooflight click here
For details of the Xtralite X-Four Rooflight click here
For details of the Xtralite X-Glaze Rooflight click here

Where required Xtralite supply a complete range of kerbs to support all the different shapes on offer and link to the majority of different roof systems and types.

If you would like assistance at any time about any of the rooflights or would like further details of our range, then please do not hesitate to contact us on 01276 451555, e-mail us at info@nationaldomes.comor use this e-mailform to contact us.