Project guide · Guide 96 of 101

Installing solar panels on a natural slate roof

Solar can be installed over slate, but the attachment and access plan must respect a repairable, long-lived roof. The roofing and solar teams should coordinate before equipment arrives.

01

Assess the roof before adding equipment

Repair slate and renew aging flashings in the work zone first. Compare expected roof-component service with the solar installation and consider how future roofing work will access concealed areas.

02

Attach to structure with slate-specific flashings

Mounts should connect to adequate framing using designed, water-shedding details. Do not rely on surface sealant or casual face drilling through unsupported slate.

03

Create service pathways

Plan equipment spacing, wiring, snow movement and safe routes for maintenance. Keep matching slate and attachment documentation with the building records.

Further technical reading

Recognized sources behind this guide

Slate Boss writing is original. These links provide additional standards, preservation guidance and industry reference material.

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