Roof 25 Rule

Florida s building code states that if more than 25 percent of a roof is damaged then the entire roof must be brought up to code.

Roof 25 rule.

First let s start with a scenario where more than 25 percent of your roof was damaged as many florida homeowners experienced with hurricanes hermine and matthew last year. The rule applies to roof repair of any commercial or residential building. So basically the rule means that if your roof coverings whether it is tile ceramic clay etc asphalt shingles organic or fiberglass metallic or any other coverings and their associated underlayment felt synthetic or any other waterproofing material is damaged more than 25 of the total roof section due to any environmental conditions or any other reason then as per the code the homeowner is supposed to replace and remove the damaged covering as per the building code requirements. If more than 25 percent of your roof was damaged you may be entitled to a full replacement.

Since the 25 roofing rule is in chapter 7 of the 2017 florida building code existing building 6th edition this means if a roof has 20 actual damage from wind or hail or another peril it would not matter if the roofer had to remove an additional 20 to replace the damaged shingles. The rule refers to a roofing system as the two slanted sections covering the home. Florida s 25 reroofing rule is found in the 2017 florida building code existing building 6th edition within chapter 7 section 706 1 1 existing roofing. Roof damages greater than 25 if more than 25 of the roof is damaged by covered events then the rule entitles you to a complete replacement of the roofing system with a few exceptions.

In a nutshell the rule states that if more than 25 percent of a roof or section of a roof is repaired replaced or recovered then the entire roofing system or roof section must be brought up to code. Only the damaged shingles apply to the 25 rule and not the other related work as they are deemed to be nondamaged components.