18 Oct Can Solar Panels Be Installed On A Tiled Conservatory Roof?
Replacing glass or polycarbonate with a tiled conservatory roof does not automatically make that roof suitable for solar panels. It may be possible, but a tiled conservatory roof cannot be treated like a conventional house roof simply because the two look similar.
Many modern tiled conservatory roof systems are designed to keep weight down. Solar panels add weight, fixing points and wind loads that the roof and supporting structure must safely carry. If solar is part of your plans, tell your roof installer before the conversion is designed.
What makes a conservatory roof different?
A conventional house roof is supported by walls and structural elements designed to carry the roof from the start.
A conservatory is different. Its roof may sit on uPVC or aluminium frames with large glazed areas beneath and the original structure may have been designed only for lightweight glass or polycarbonate. That is why systems like SupaLite are designed to provide a solid, insulated roof while keeping overall weight relatively low.
At Affordable Quality Windows, we use lightweight materials including ExtraLight tiles and Tapco Slate with our SupaLite roof conversions. The system is designed specifically for conservatories rather than being built like a conventional heavy tiled roof.
Solar panels add loads and installation requirements
A solar installation can introduce:
- Panels, mounting rails and brackets
- Fixings into the roof structure
- Cable routes and associated electrical work
- Wind loading, including uplift
- Snow-loading considerations
- Additional stresses around fixing points
Wind is particularly important because panels sit above the roof covering and can create uplift as well as downward forces. What is crucial here is whether the entire conservatory structure can carry those loads, not just whether the roof covering can take the panels.
Can a SuperLite roof support solar panels?
There is no blanket yes-or-no answer for every SupaLite roof.
A SupaLite roof is engineered to be lightweight, but that does not mean every installation has been designed to carry solar panels. The roof structure should be checked by a suitably competent person to confirm that it can safely carry the additional loads. Because conservatory roofs can differ significantly from conventional house roofs, a structural engineer may also need to be involved.
The assessment may also need to consider the conservatory frames or walls and the foundations that ultimately transfer the load to the ground.
If you already know you want solar panels, raise this before ordering the roof conversion. That gives the roof designer a chance to account for panel loads and fixing requirements before the structure is built.
What an installer needs to check
1. Roof load capacity
In Wales, Building Regulations will normally apply when solar panels are installed on a roof. The existing structure must be able to carry the extra load. If it cannot, strengthening may be required.
Appearance alone is not enough. Two tiled conservatory roofs can look similar while having very different structural specifications.
2. Frames, walls and foundations
Loads must transfer through the roof into the conservatory frames or walls and ultimately the foundations. On an older conservatory, especially one that has already had its roof replaced, the installer needs to check how those loads travel all the way down to the foundations.
3. Panel fixings and waterproofing
The mounting system must connect to suitable structural points without compromising the roof covering, waterproofing membrane or weather-tightness. Check with the roof manufacturer or warranty provider before work starts, as adding solar panels or new fixings may affect the warranty.
4. Roof layout and usable space
Victorian and P-shaped conservatories, for example, can have several roof faces along with hips, valleys, roof windows or glazed sections. That leaves fewer clear areas for panels and may also make installation or later maintenance more awkward.
Is the conservatory roof the best place for solar?
Even a structurally suitable conservatory roof may be a poor place to generate solar power. Before choosing the conservatory roof, check how much of it is shaded during the main daylight hours.
An unshaded, south-facing roof is generally ideal for maximising solar generation, although east- and west-facing roofs can also be viable. The main house itself can shade a conservatory, as can nearby buildings and trees. Because conservatory roofs tend to be lower than the main roof, they may be more vulnerable to shading from the house itself, nearby buildings or trees.
A small roof or one broken up by several hips and valleys may leave room for only a few panels. Even if the conservatory can take the load, the main roof may offer more usable space and less shading.
Planning permission is not usually required for solar panels on a house in Wales, although exceptions apply, including s and some properties in protected areas.
Talk to Affordable Quality Windows about your roof conversion
Affordable Quality Windows installs conservatories in Swansea and provides tiled roof conversions across South Wales. If you’re planning a tiled roof now and thinking about adding solar later, mention it when you book your survey so it can be considered before the roof is specified.