Question 1

How much does a sun tunnel cost in Sussex, Surrey or Kent?

Accepted Answer

Sun tunnel installation starts from £900 for a standard pitched tile roof installation. Pitched slate roofs start from £1,000 and flat roofs from £1,100. All prices include supply and fit of the Velux dome, reflective tube, ceiling diffuser, and all flashing. Final price is confirmed in writing after a free survey.

Question 2

How long does sun tunnel installation take?

Accepted Answer

A standard sun tunnel installation takes a single day. We arrive in the morning, install the roof dome and flashing, run the reflective tunnel through the loft space, fit the ceiling diffuser, and leave your home tidy — all before the end of the working day.

Question 3

Do I need planning permission for a sun tunnel?

Accepted Answer

In most cases, no. Sun tunnels are typically covered by permitted development rights and do not require planning permission. We will always flag if your specific property or location might be an exception.

Question 4

What roof types are suitable for a sun tunnel?

Accepted Answer

Velux sun tunnels can be installed on pitched tile roofs, pitched slate roofs, and flat roofs. Each roof type has a specific Velux flashing kit designed for it. The vast majority of UK homes are compatible.

Question 5

What rooms are sun tunnels best suited to?

Accepted Answer

Sun tunnels work best in rooms directly below a roof with no external windows or limited natural light — most commonly hallways, landings, bathrooms, internal kitchens, dressing rooms, utility rooms, and stairwells.

Question 6

Which brand of sun tunnel do you fit?

Accepted Answer

We fit Velux sun tunnels exclusively. Velux is the original sun tunnel manufacturer and the benchmark for quality and weather performance in the UK. We are members of the Velux Partner Programme, which gives us access to their full technical support and trade pricing.

Question 7

Is a sun tunnel the same as a skylight or roof window?

Accepted Answer

No. A sun tunnel (also called a tubular skylight or solar tube) channels daylight through a highly reflective tube from a small roof dome to a ceiling diffuser below. Unlike a skylight or roof window, it does not provide a view of the sky or ventilation — it is purely a daylight delivery system, ideal for rooms where a conventional window or skylight isn't practical.

How Sun Tunnels Work | Sun Tunnels by Heartwood Hearths