BrightGridNot every roof is perfect for solar, but an imperfect roof does not necessarily mean that solar is impossible. Roof orientation, pitch, condition, shading, usable area and electrical design should all be assessed together.
Can solar go on an old roof?
An older roof may still be suitable, but its condition and expected remaining life should be considered before installing a long-term energy system. If major roof work is likely soon, it may make financial sense to address the roof before installing solar.
What if the roof is too small?
A smaller roof can still benefit from solar. Higher-power or higher-efficiency panels may allow more generation to fit into limited space, although the additional equipment cost should be considered.
What if the roof faces north?
North-facing roofs can sometimes be viable, particularly where the pitch is shallow. However, generation should be modelled before deciding.
Roof condition is more important than aesthetics
- Age of roof covering
- Structural condition
- Existing leaks
- Roof access
- Roof construction
- Fixing requirements
- Future maintenance plans
What if one roof face is unsuitable?
A property may have several roof faces. A good installer should assess the whole property rather than rejecting the installation because one roof section is unsuitable.
A proper survey should produce an answer, not a guess
The right question is not whether the roof looks perfect. It is whether the expected generation and installation requirements produce a sensible system for the property.
Find out if your roof is suitable
Get your roof orientation, shading, usable area and energy requirements assessed before deciding.
Assess My RoofFrequently asked questions
Can solar panels be installed on an old roof?
Potentially, but roof condition and remaining service life should be assessed before installation.
Can I install solar on a small roof?
Yes. The available generation will depend on usable area and panel technology.
Can solar panels go on a north-facing roof?
They can in some circumstances, particularly with suitable pitch and a good generation forecast.
What if my roof is shaded?
The installer should model the shading and determine whether alternative layouts or suitable system architecture can make the project viable.
Marcus Webb
Head of Engineering at BrightGrid Energy
