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In depth

4 metre roof lantern: made to measure

DagLichtDesign makes a 4 metre roof lantern to measure.

  • Own factory in Barneveld
  • Lead time from 2 weeks
  • Quote within 24 hours
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Which roof lantern are you looking for?

Feel free to choose more than one option.

What are the dimensions?

The outside size of the opening or upstand, in centimetres. A good estimate is fine.

Where will the roof lantern go?

So we know what to take into account.

When would you like the roof lantern?

An estimate is fine.

Add a photo, sketch or drawing? (optional)

A photo of your roof or a sketch with dimensions helps us make an accurate quote. You can also skip this.

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The short answer

DagLichtDesign makes a 4 metre roof lantern to measure. As a mono-pitch it can be up to 5 metres wide in one panel without a glazing bar, so 4 metres is one continuous glass pane. The lead time for made-to-measure work is from 2 weeks after approval.

A 4 metre roof lantern as a mono-pitch

Stock sizes go up to 3 metres. A 4 metre roof lantern falls outside that and is therefore made to measure. That is no drawback: the size then fits your opening exactly. For a mono-pitch roof lantern, 4 metres is still well within the 5 metre limit for one panel.

You often see a 4 metre roof lantern on an extension across the full width of a terraced house or on a spacious extension. The glass runs uninterrupted. How that compares with a version with bars is explained under a roof lantern with or without a glazing bar.

Other roof types at 4 metres

A length of 4 metres is also possible as a gable or hipped roof lantern. A gable roof lantern goes up to 6 metres long and 4 metres wide per slope as standard. We make a hipped roof lantern up to 9 m² of glass as one unit. Which type suits you depends on the shape of the room and how you want the light to fall.

  • Mono-pitch: up to 5 metres in one panel
  • Gable: up to 6 metres long, 4 metres per slope
  • Hipped: up to 9 m² of glass as one unit

Glass and weight on a large roof lantern

At 4 metres, the glass pane becomes large and heavy. The glass has to carry snow and wind and be safe if something falls on it. That is why we use safety glass to NEN standard in a roof. Why laminated glass matters in a roof is explained under safety glass and laminated glass.

Because of the weight, a 4 metre roof lantern is usually fitted with lifting gear. Include that in the schedule with your builder. HR++ double glazing is standard. For a large pane facing south, solar control glass is worth considering.

Accurate measuring is half the job

With made-to-measure work, you and your builder fix the exact size of the upstand. A few centimetres make a big difference at 4 metres. Read measuring up for a roof lantern beforehand. If you do not have measurements yet, we come and take a look. Want to know which sizes are standard first? See standard sizes.

  • Quote within 24 hours
  • A photo or sketch is enough
  • Lead time from 2 weeks, complex up to 8 weeks

Frequently asked questions

Is a 4 metre roof lantern in stock?

No, the stock sizes are 1, 2 and 3 metres. We make a 4 metre roof lantern to measure. The lead time is from 2 weeks after approval.

Does a 4 metre roof lantern need a glazing bar?

Not as a mono-pitch. We make a mono-pitch up to 5 metres wide in one panel without a glazing bar. Only above that do thermally broken bars come in.

How is a 4 metre roof lantern fitted?

Usually with a crane, aerial platform or other lifting gear, because the glass is heavy. Your builder places it on the upstand and connects the roof covering following the installation manual.

Want to know what your roof lantern costs?

Send a photo or sketch with dimensions. Within 24 hours you receive a quote with glazing options, lead time and price.

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A few questions, a photo or the dimensions, and we will prepare a tailored quote. Prefer to call: +31 342 223 190.

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