roof lantern rafters
roof lantern rafters
roof lanterns, orangery roofs

crc roof lanterns
orangery roofs


CRC
Roof Lanterns & Bi-folding Doors
Manufacturers And Suppliers Of Aluminium Roof Lanterns & Aluminium Bi-folding Doors


Traditional Roof Lantern


How to do the timber to timber up-stand


Set out the timbers on the flat roof leaving a hole where the roof lantern will be fitted and allowing enough room for spotlights if required.


Screw a timber down around the hole Approx 100mm high and 70 mm wide making sure the size of the hole does not change.


Measure the timber to timber hole and deduct 30 mm from the length and width

this will make the roof lantern overhang inside 15 mm all the way around to allow room for plaster work (see diagram).


If the hole has already been done and plastered then you would measure plaster to plaster and no deduction is made.


If you purchase a roof lantern before you have done the timber to timber hole then you would make the timber to timber hole 30 mm bigger both ways than the roof lantern you have purchased.


Examples.


Plaster to plaster size 2000mm x 1000mm = roof lantern size 2000mm x 1000mm.


Timber to timber size 2000mm x 1000mm = roof lantern size 1970mm x 970mm.


If you have purchased a 2000mm x 1000mm roof lantern before you have done the timber to timber hole, the timber to timber hole size would need to be 2030mm x 1030mm.

                                                                      

 

Contemporary Roof Lantern

How to do the timber to timber up-stand

Set out the timbers on the flat roof leaving a hole where the roof lantern will be fitted and allowing enough room for spotlights if required.


Screw a timber down around the hole approx 100mm wide and 150mm high making sure the size of the hole does not change.


simply give us the external size of the up-stand and we will make the deductions to ensure it fits correctly.


If you wish to order the lantern before the up-stand is done, all you have to do is give us the external dimensions of the timber up-stand you are planning to do and make sure it is done to the sizes you have given us.