Lightning/Surge Grounding Coordination for Timber Frames: Builder Checklist

Published March 20, 2026 by MVP Pro Timber

Builder checklist for grounding/bonding on timber builds: bonding points, grounding electrode plan, routing rules, penetration approvals, and trade coordination to avoid surprise holes and inspection failures.

# Lightning/Surge Grounding Coordination for Timber Frames: Builder Checklist Grounding and bonding on timber projects can become a last-minute scramble: trades need bonding points, routing crosses finished timbers, and penetrations appear without a plan. The risk is not only cosmetic damage; it is inspection failure and long-term performance issues. This builder checklist helps you coordinate grounding/bonding early and keep routing controlled. ## Builder checklist: grounding/bonding coordination ### 1. Confirm scope and responsibility Clarify who owns what: electrician, lightning protection contractor (if used), and any specialty requirements. ### 2. Grounding electrode system plan Confirm the grounding electrode approach (UFER, ground rods, bonding to structural steel, etc.) and where the primary connection points are located. ### 3. Approved routing paths Pre-plan routing so conductors do not require unapproved drilling through visible timbers or critical connection zones. ### 4. Bonding points and hardware coordination Identify where bonding is required (metal roofing, mechanical systems, plumbing, structural steel/hardware) and ensure attachment points do not conflict with finish faces or hardware zones. ### 5. Penetration approval rules If a penetration is needed: stop, photograph, request approval, and document location/size before drilling. ### 6. Inspection documentation Photograph key bonding/grounding connections before cover-up. Clear documentation speeds inspection and reduces rework. ## Builder move that prevents surprises Add grounding/bonding routing to your trade handoff memo with no-drill zones and the approval contact. It removes ambiguity and reduces field improvisation. ## Where MVP Pro Timber helps We help builders coordinate key interfaces and trade routing rules on timber jobs so critical systems get installed cleanly without surprise holes in finished timbers.