Plan the complete project budget
Sun tunnel cost in the UK: kit prices, upgrades and fitting
A sun tunnel quote has two parts: the supplied system and the work needed to fit it. Intura’s UK shop lists a SunTube25 flat roof kit at £624.00 and a SunTube25 pitched roof kit at £819.00, including 20% VAT. Extensions, insulation upgrades and fitting can change the total.
Intura Daylight Systems Ltd · UK daylight products and project support
How much does an Intura sun tunnel kit cost?
The prices below are a checked snapshot of the Intura UK shop on 29 September 2026. They include 20% VAT and exclude installation. Confirm the live product price, delivery terms, availability and exact contents before ordering; promotions and configurations can change.
| Kit | Roof configuration | Price including VAT | Product |
|---|---|---|---|
| SunTube25 | Flat roof, EPDM; crystal glass dome | £624.00 | View ST25 flat roof kit |
| SunTube35 | Flat roof, EPDM; crystal glass dome | £690.90 | View ST35 flat roof kit |
| SunTube25 | Pitched roof kit; crystal glass dome | £819.00 | View ST25 pitched roof kit |
| SunTube35 | Pitched roof kit; crystal glass dome | £918.00 | View ST35 pitched roof kit |
Choose the roof specification first. The flat roof guide explains membrane choices, while the pitched roof guide covers roof coverings and loft routes. An unsuitable lower-priced kit is not a saving if it needs different components to fit the building.
What does an EcoPower insulation upgrade add to the price?
The shop lists double-glazed EcoPower elements at £358.15 for ST25 and £368.53 for ST35, including VAT. Adding these to the listed base-kit prices gives the supply-only totals below. This arithmetic assumes one compatible kit and one matching element; it does not include extra tube sections, bends, delivery charges where applicable or fitting.
| Configuration | Base kit | EcoPower double glazing | Combined price including VAT |
|---|---|---|---|
| ST25 flat roof | £624.00 | £358.15 | £982.15 |
| ST35 flat roof | £690.90 | £368.53 | £1,059.43 |
| ST25 pitched roof | £819.00 | £358.15 | £1,177.15 |
| ST35 pitched roof | £918.00 | £368.53 | £1,286.53 |
View the ST25 double-glazed EcoPower element or ST35 double-glazed EcoPower element. Ask Intura for the price and availability of a triple-glazed configuration; the totals above apply only to the listed double-glazed products.
The EcoPower technical page explains the thermal options. Decide the required performance with your project adviser before comparing quotes, so that every supplier is pricing the same level of specification.
Why do sun tunnel installation quotes vary?
Two houses can use the same kit and still need very different amounts of work. Easy access, a short clear route and a straightforward ceiling finish reduce complexity. Restricted access, multiple offsets, specialist roof coverings and making good an occupied room add work that a kit price does not describe.
- Access: scaffolding, edge protection or a safe working platform may be required.
- Roof connection: the installer needs to integrate the flashing with the existing roof system.
- Tube route: measure the installed distance and identify every required extension and elbow.
- Ceiling work: include the opening, diffuser fit and any making good or decoration.
- Insulation detail: specify the upgrade and the work to connect insulation and air barriers.
- Other trades: any optional electrical accessory or building alteration needs its own allowance.
Ask a suitable local installer for a site-specific written quote. A national average is a poor substitute when the actual roof, access and route are still unknown. Intura supplies the system; confirm who is responsible for the installation contract and aftercare.
A worked sun tunnel budget: what the total could include
Here is a budgeting example for an ST25 EPDM flat roof kit with a double-glazed EcoPower element. The product prices are the checked shop figures. The labour, access and finishing amounts are hypothetical allowances, not Intura fitting rates or a typical UK installation price.
| Budget line | Example amount | Basis |
|---|---|---|
| ST25 EPDM kit | £624.00 | Listed supply price |
| EcoPower double glazing | £358.15 | Listed supply price |
| Installation labour | £450.00 | Assumed quote amount |
| Access equipment | £180.00 | Assumed allowance |
| Ceiling making good | £60.00 | Assumed allowance |
| Example total | £1,672.15 | Arithmetic only; replace assumptions with quotes |
Compare the complete quote, not the headline price
A useful quote identifies the model, roof variant, supplied tube length and every upgrade. It also says who does the roof work and ceiling finish. Without that detail, a low figure can omit the parts or tasks that make the installation complete.
- Exact SunTube diameter and roof configuration.
- Collector material and the required flashing or membrane type.
- Total route length, extensions and number of bends.
- EcoPower version, if specified.
- Installation, access, making good and any electrical work.
- VAT, delivery, lead time, warranty terms and exclusions.
When shortlisting a specification, use our UK sun tunnel buying guide to separate the actual features from broad marketing claims. For a hall or landing, the positioning guide helps you decide whether one or several units should be priced.
Bring a roof photo, a sketch of the route and room dimensions to the Intura UK team. An accurate specification gives your installer a much clearer basis for quoting.
Frequently asked questions
How much does a sun tunnel cost in the UK?
The complete cost depends on the kit and the work required. Intura’s checked shop prices start at £624.00 including VAT for the listed ST25 flat roof kit and £819.00 for the listed ST25 pitched roof kit. Installation and optional components are additional.
Are these fitted sun tunnel prices?
No. They are supply prices checked on 29 September 2026. The worked fitted budget uses hypothetical labour, access and finishing allowances. Obtain a project-specific installation quote.
Is EcoPower included in the base kit price?
The shop lists the EcoPower element separately. Confirm the contents of your chosen configuration and quote before ordering. The combined totals on this page add one matching double-glazed element to one base kit.
Is a larger sun tunnel always better value?
Value depends on where the light is needed and how the route can be installed. Compare the useful result in the room, the full specification and the fitted cost, rather than choosing solely by diameter.
Will a sun tunnel pay for itself through electricity savings?
That depends on how often daylight allows lights to be switched off, the lighting power and energy prices. No payback period can be promised from the kit price alone. Many buyers also value natural daylight and the room’s appearance.
Get a SunTube specification you can quote accurately
Send your roof type, roof covering, room dimensions and the full roof-to-ceiling distance. We can help identify the kit and additional components.
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Product information and sources · Prepared for Intura Daylight Systems Ltd. Product information checked 29 September 2026.