How To Measure For A Roof Lantern

When you browse our range of roof lanterns each product will have a size relating to the product you are looking at.

How to measure for a roof lantern.

The roof lantern upstand in detail. When measuring for your new roof lantern or skylight you should measure the external size of the hole length and width. The omega upvc lantern works with internal opening measurements. The roof lantern upstand in detail.

If you have an existing upstand on site then please take an external and internal measurement of the upstand and contact us. Generally speaking we advise that the overall glazing area in any extension should cover atleast 15 20 of the overall floor space. Longer roof lanterns are 2 4m x 1 2m. Therefore we need to know the finished internal measurements of the opening in your roof.

Where do i measure from. This will be the size of the opening the thickness of the plaster boards you use to line the opening. If it does the roof lantern dimensions will normally be taken from the external face of the supporting kerbs and the lantern will be fitted to overhang for weathering. A smallish 100x100cm lanterncan let in a surprising amount of sunlight while a 150x250cm lanterngives an excellent area of light for a medium sized roof.

All our roof lanterns shown on this website are designed to be fixed onto a kerb like detail which rises proud of the supporting flat roof assembly precisely at the open edge of the lantern aperture. So if you are interested in having a roof lantern installed the answer is simple. The most important thing to remember when deciding on what size rooflight you require is that the size of our windows width x length are measured to the external kerb upstand not to the size of the hole in your roof or the window itself. Darren collins 4th september 2017.

We advise to measure at various points and checking the diagonals to ensure it is square. When you decide which roof lantern you would like we will provide you with the details for how to install your chosen sky light. Link below is a project in london the size of the. This will give you an indication of the light created by a roof lantern of this.

The inside of you builders upstand should line up with this finished opening size. Once your size and glazing is chosen take your pick from one of 5 possible colour combinations including all black black and white grey and white all grey and all white.