What is the lowest pitch you can fit a Velux window?

The minimum pitch for a Velux window is 15 degrees so you cannot have a pitched roof with roof lights.

How low can you fit a VELUX?

The New VELUX GBL White Painted Low Pitch Roof Windows can be used on roof pitches down to 10 degrees. With a combination of innovative design and technology, the new Low Pitch roof window provides a watertight solution to overcome the previous challenges of installing a roof window at a low pitch.

Can skylights be flat?

With a VELUX Flat Roof Skylight designed to meet the growing demand for skylights in homes with flat or low-pitch roofs, you can transform and improve virtually any space with daylight. These new Flat Roof Skylights are fitted in a PVC curb and topped with one of two covers: CurveTech glass or polycarbonate dome.

Can you put Velux windows in a flat roof?

Can you put a VELUX window in a flat roof? VELUX do produce roof windows suitable for Flat Roofs. In fact, VELUX Flat Roof Skylights are available in a range of sizes, making it easy for you to choose and install.

What is the minimum pitch for skylights?

The recommended pitch for skylight installation on a flat roof. For many skylight applications on flat roofs, there should be a minimum pitch or fall of 0.6 in 12. This is enough to ensure that water will drain off the surface of the glass and avoid pooling.

Why do skylights need a 15 degree pitch?

This is known as ‘deflection’ and means that without pitching the rooflight up slightly at one end, rainwater will accumulate and begin to ‘pond’ on the glass. When this evaporates it can leave unsightly marks and stains behind.

Do you need to double up rafters for Velux?

“It is considered that the rafters should be doubled and bolted together on all four sides of each roof-light. Rafters either side should span between the reach of the roof and the support.

Can you put a skylight on a pitched roof?

In the dictionary, a skylight is defined as ‘a window set in a roof or ceiling at the same angle’ and because the term ‘skylight’ is so broad, it can be used in the pitched roof sense as well as the flat roof sense when it comes to talking about them.

Can you put VELUX windows in without planning permission?

The majority of people will not require planning permission for a VELUX roof window or any other permitted development in their roof space. To be certain of this it is advisable to contact your local planning authority.

What’s the lowest pitch for a slate roof?

20 degrees
‘The minimum pitch for any double-lap slating is actually only 20 degrees, but there are many design factors that go in to this and so, in reality, this is rarely seen; a more realistic minimum pitch for most slates is around 27.5 degrees, but even this depends on certain conditions’.

Do I need building regs to install a Velux window?

Approval under the Building Regulations will generally be needed for the installation of a new rooflight for the following reasons: To install a new rooflight, the roof structure will often need to be altered to create the opening. The roof will have to be able to carry the weight of the new skylight.