Certified Roofing Contractor/Trade Knowledge

Code & Wind Requirements

13% of this exam

Florida's wind rules are what make this exam different from any other state's. Questions test the HVHZ boundaries, the product approval system, roof wind zones and why attachment tightens at edges, and the hurricane mitigation features — secondary water barriers, roof-to-wall retrofits, and the inspections that earn insurance credits.

Core concepts

Approval first, installation per approval

Every covering must be an approved product — Florida Product Approval statewide, or a Miami-Dade NOA especially in the HVHZ (Miami-Dade and Broward counties only). The approval defines the tested assembly: materials, underlayment, fasteners, spacing, edge details. Keep the documents on site for the inspector, and remember reroofs need permits statewide.

Wind loads peak at the edges

Roofs divide into field, perimeter, and corner zones; corner uplift is highest because of edge vortices. Approved assemblies respond with enhanced attachment — closer fastener rows, more adhesive, extra nails — in perimeter and corner zones. Coverings are designed to components-and-cladding pressures, which exceed main-frame pressures because small elements catch localized peak gusts.

Mitigation assumes the covering can be lost

A secondary water barrier (self-adhered membrane or taped deck seams) keeps the building dry if the storm strips the covering. Reroofing certain existing homes can trigger evaluation and strengthening of roof-to-wall connections with straps or clips so the whole roof structure stays anchored.

HVHZ rules are their own chapter

Miami-Dade and Broward carry the state's strictest requirements — including more demanding prescriptive underlayment systems beyond statewide rules. Wind mitigation inspections document features (covering, deck attachment, roof-to-wall, roof shape, secondary water barrier) for insurance premium discounts; they do not replace building department inspections.

Key facts to know cold

HVHZMiami-Dade and Broward counties — strictest roofing rules in the state

Product approvalFlorida Product Approval or Miami-Dade NOA; install per the approved assembly, documents on site

Highest uplift zoneCorners, then perimeter, then field — attachment steps up accordingly

Secondary water barrierBackup layer that keeps water out after the covering blows off

Roof-to-wall retrofitStraps/clips strengthening truss-to-wall connections, triggered by reroofs on certain existing homes

Reroof permitsRequired statewide, not just in the HVHZ

Where it lives in your books

The real exam is open book. Knowing which book — and which tab — answers this domain is worth as much as memorizing it.

manual

Roofing References

Florida roofing is code-first: product approvals, underlayment, and attachment requirements decide questions that would be judgment calls elsewhere. Tab the FBC roofing chapter before anything else.

7 recommended tabs

code

Florida Building Code

Code questions give themselves away with words like 'minimum', 'required', or 'permitted'. Go to the code — never answer a code question from memory when the book is on the desk.

9 recommended tabs

Lookup strategy

· Tab the FBC roof assemblies chapter and the HVHZ roofing sections separately — the exam loves asking which rule applies where.
· Words like 'required', 'minimum', or 'permitted' mean code lookup: go to the FBC, never answer a wind/code question from memory.

Reading isn't learning — retrieval is.

22 questions in this domain, each with an explanation and source.