Additional Insured Endorsements for Roofing Subcontractors
What Is an Additional Insured Endorsement?
An additional insured endorsement modifies your general liability policy to extend coverage to a third party, typically the general contractor or property owner on a project. When a GC is named as additional insured on your policy, they gain the right to defense and indemnity under your coverage for claims arising from your work. This does not give them coverage for their own negligence in most modern endorsement forms, only for liability connected to your operations or completed work. The endorsement creates no additional cost to the additional insured party and is funded entirely through your premium.
Why GCs Require Additional Insured Status
General contractors require additional insured status because they face downstream liability for every subcontractor on their project. If your roofing crew drops material on a pedestrian, the injured party will sue both you and the GC. Without additional insured status, the GC must tender the claim solely to their own policy. With it, they can access your policy first, preserving their own limits and claims history. This risk transfer mechanism is fundamental to commercial construction and no GC will engage a roofing subcontractor without it.
Types of Additional Insured Endorsements
The most commonly required endorsements are CG 20 10 (additional insured for ongoing operations) and CG 20 37 (additional insured for completed operations). Together, these provide the GC with coverage during construction and after your work is done. Older forms like CG 20 10 (10/01) provided broader coverage than current editions. Some contracts specify particular endorsement editions. Blanket additional insured endorsements automatically extend coverage to any party you are contractually required to add, eliminating the need for individual endorsements per project.
Cost Impact on Roofing Subcontractors
Additional insured endorsements typically add 1% to 3% to your general liability premium. Blanket endorsements are more efficient than per-project endorsements because they require no individual processing. The real cost impact comes from claims. If the additional insured tenders a claim to your policy, it hits your loss history and affects your future premiums. This is why understanding the scope of the endorsement matters. Modern endorsement forms limit coverage to the additional insured's vicarious liability for your acts, not their independent negligence.
Common Pitfalls and How to Avoid Them
The most dangerous pitfall is assuming you have blanket additional insured coverage when your policy only provides it on a scheduled basis. Verify your policy form annually with your broker. Another common issue is timing: the endorsement must be in place before work begins, not after. If your policy uses older endorsement forms, a GC may reject your certificate as non-compliant. Ensure certificates are issued only by your carrier or authorized broker, include the correct endorsement form numbers, and match the exact legal entity name required by the contract.
Ready to talk about your insurance program?
Tell us about your operation and a roofing insurance specialist will reach out within 24 hours.