Before fitting solar panels in Warwickshire, a roofer should check tile and felt condition, batten adequacy, structural load capacity, and planning constraints. Panels last 25–30 years, so a roof needing replacement within 10 years should be re-roofed first — otherwise removal and refit adds £1,500–£3,000 later.
Solar panel installation is increasing rapidly across Warwickshire as energy prices remain high. Most panels are fitted by solar installers who are experts in electrical systems but may not assess the structural condition of the roof they are fitting onto with the same rigour a roofer would apply. This guide covers what a roofing assessment before solar installation should involve — and what questions to ask.
Why Roof Condition Matters Before Solar Installation
Solar panels have a 25 to 30 year design life. If they are fitted to a roof that needs replacing in 5 to 10 years, removing and refitting the panel system adds £1,500 to £3,000 to what would otherwise be a standard re-roof. A roofer's pre-installation assessment costs £75 to £150 and can identify this risk before it becomes an expensive problem.
MCS installation standards require the mounting structure and roof to be assessed for wind and snow loading before solar PV installation; a roof at the end of its serviceable life should be addressed first.
— MCS Installation Standard — MIS 3002 (solar PV)
What the Assessment Should Cover
- Tile and felt condition: Are the tiles sound enough to support the additional load and penetrations? Is the felt underlay in good condition or approaching end of life?
- Batten condition: The mounting brackets for solar rails typically fix to the battens. Rotted or undersized battens cannot take the additional load safely.
- Roof structure: Is the rafter spacing adequate for the additional dead load of the panel system? Most domestic roofs are, but older properties with non-standard rafter spacing warrant assessment.
- Nail sickness: A nail-sick roof with solar panels on it is a particular problem — the panel mounts may be the only thing keeping some tiles in position.
- Waterproofing at penetrations: Every fixing point that penetrates the tile or slate surface is a potential water entry point. The quality of the waterproofing detail at each mounting point is critical.
Conservation Area and Listed Building Restrictions
Solar panels on conservation area properties in Warwickshire require more careful assessment. Panels are not permitted on principal elevations visible from the highway in most Warwickshire conservation areas under permitted development rights. For listed buildings, listed building consent is required — panels are often refused on visible elevations. Stratford Old Town, Warwick castle conservation area, Leamington Regency quarter and the designated conservation villages all have constraints that a solar installer without local planning knowledge may not account for.
The planning assessment for a listed building solar application needs to be done before installation is committed to — not after a deposit has been paid to the solar company.
Our Pre-Solar Assessment Service
We carry out pre-solar installation roof assessments across Stratford and Warwickshire. The report covers tile and felt condition, batten adequacy, structural load capacity and planning constraint identification. For a Warwickshire property with a 1970s or 1980s concrete tile roof, this assessment is genuinely valuable — it may confirm the roof should be replaced before panels go on, or confirm it is sound for the full 25-year panel life.
Need a Quote in Stratford or Warwickshire?
Free surveys. No call-out fees. NFRC registered since 2003.
📞 Call 01789 509542