We can provide quotes by working from either your internal or external curb size or your external overall manufacturing size. As a rule, we tend to work from the external manufacturing size which would usually be your external curb size plus 30mm on each side.
We can produce some fairly large flat skylights but there comes a point where the size is too large for one glass unit. Our frameless glass lantern design can be supplied up to an external manufacturing size of 3000mm x 1500mm whereas our flat rooflights can be much larger.
When a flat skylight size exceeds the maximum dimension for a single unit the glass can be split into smaller sections by incorporating a glass beam or a structural beam that the glass is bonded to. This design would be supplied to site in kit form and allows for an easier installation without the need for costly lifting equipment. For narrower flat rooflights we can offer a structural glass to glass join to provide a more frameless look.
The glass lantern design offered by Metal & Glass Limited uses glass to glass joints rather than the usual bars found in other manufacturer’s products. Replacing those bars with a structural glass to glass join allows our lanterns to achieve a better thermal performance, provide more natural daylight and have thinner hips and ridge. Not only does a frameless glass lantern from Metal & Glass Limited provide more natural daylight it also offers a more aesthetically pleasing design.
At Metal & Glass we use solar control easy-clean glass as standard on all of our flat roof products. Our glass units are Argon gas filled and feature an internal low-e pane to give you the very best thermal performance.
Low-E or low emissivity glass controls the amount of ultraviolet and infrared light that can pass through glass without effecting the overall amount of visible light that is transmitted. By reducing the emissivity of the skylight glass surfaces it improves the insulating properties.
Metal & Glass skylights are usually supplied in a RAL7016 anthracite grey or RAL9005 black, paint finish. However, we can provide your rooflight in any RAL colour of your choice subject to a surcharge. It is worth noting that colours other than grey or black may require permission if you are located in a Conservation area or you are intending to install the skylight on a Listed building.
Whilst Metal & Glass can provide you with the weight of your flat skylight, you will need to seek the advice and approval from building regulations to provide you with the adequate structural information to safely install a curb for your rooflights to sit on.
Here at Metal & Glass our rooflights have a warranty for 5 years and will be happy to know that replacement parts are available for purchasing outside of the warranty period.
Our flat skylights, lanterns and pyramids all benefit from a thermally broken frame. The thermal breaks in our rooflight products all comprise of polyamide strips which ensure that the aluminium is thermally efficient. Chemically speaking, a polyamide is a polymer, i.e. a substance composed by the union of monomers with amide-type bonds. Due to its mechanical and thermal properties, polyamide is widely used in industry, which also uses its volumetric resistivity and insulating capacity to create all types of parts. We can find polyamides in nature, as in the case of silk or wool, or in synthetic form, as in Kevlar or nylon.
Among its advantages we find:
- High thermal stability
- Wear and corrosion resistance
- Mechanical damping
- Sliding properties
- Chemical resistance
- High resistance to deformation with heat
- Simple mechanization
To these characteristics we must add that this type of polymer can be mixed with other materials, thus obtaining reinforced polyamides with special properties for different types of use such as, for example, thermal break.
The use of the polyamide within our aluminium frame will stop condensation and heat loss. A lot of systems out there are just made of a single piece of aluminium, these cannot be classed as ‘systems’ and have no test results as they are not thermally efficient in any way by design.
Our flat rooflights and lanterns can be used on any roofing substrate as long as the rooflight is being fitted onto a timber upstand and the correct sealant is applied. We can also manufacture our flat skylights to suit a wall abutment if required.