Ask two contractors to quote the same pool cage rebuild and sooner or later one of them offers a sentence meant to close the conversation: everything we use is approved. Sometimes the number quoted is a Miami-Dade NOA. Sometimes it is a Florida statewide approval. Either way it arrives as proof that the structure will be right.

It is real paperwork and it is worth having. It is also answering a narrower question than most homeowners think, and the gap between what it certifies and what your enclosure needs is where the expensive surprises live.

The two numbers are not the same thing. Florida runs a statewide product approval system, administered by the Florida Building Commission under Rule Chapter 61G20-3 of the Florida Administrative Code. A Notice of Acceptance is a separate, county-level product control document issued by Miami-Dade County. A product may carry one, both or neither, and which of them your building official will accept for a permit in Collier County is a question for that official rather than for the contractor quoting the job.

What matters for this article is what they have in common: both are statements about a product. Your enclosure is a structure, assembled on your deck, at your exposure, to resist the wind that reaches your particular lot. Those are two different claims, proved by two different documents, and only one of them is what the approval number is for.

Last reviewed: 11 September 2026 against the Florida Administrative Code, Rule Chapter 61G20-3, and the Florida Building Code, Building volume, 8th Edition (2023), Chapter 20. Rule and section numbers are from those editions; both are revised on a cycle and numbering moves, so confirm against what your jurisdiction has adopted. The anchorage question this article stops short of is covered separately in our guide to the line between fixing a pool cage and rebuilding one.

What a product approval actually is

Florida runs a statewide product approval system under Rule Chapter 61G20-3 of the Florida Administrative Code, made under the authority of Section 553.842 of the Florida Statutes. The chain has three links, and Rule 61G20-3.004 names them in order: a product is evaluated by a method listed in Rule 61G20-3.005, that evaluation is validated as required by Rule 61G20-3.006, and the result is approved under Rule 61G20-3.007. Validation is performed by approved Validation Entities. Approval is performed by the Commission.

Rule 61G20-3.005 sets out how compliance can be demonstrated in the first place. Under Method 1, a product addressed in the Code through performance criteria and standard test methods can show compliance through one of a list running from (a) to (g). The routes themselves are:

  • (a) a certification mark or listing from an approved certification agency, certifying to standards adopted by the Code
  • (b) a test report from an approved testing laboratory, identifying which products the report covers
  • (c) an evaluation report from an approved product evaluation entity, based on standard tests or standard comparative or rational analysis, concluding the product is at least equivalent to what the Code requires
  • (d) an evaluation report from a Florida Registered Architect or a licensed Florida Professional Engineer, developed and signed and sealed, on the same basis
  • (f) a legacy report from a nationally recognized model code organization, where it demonstrates compliance with the Code

Two entries in that list are limits rather than routes, and both are worth knowing. Paragraph (e) says rational engineering analysis cannot be used in place of a standard test the Code requires for products within that standard’s scope, except by project-specific approval from the local authority having jurisdiction under the Code’s alternate methods provisions. Paragraph (g) closes a gap: where a product needs both a referenced testing standard and rational analysis falling outside the scope of the certifying agency’s certificate, compliance must be shown by an evaluation report from an approved evaluation entity.

Paragraph (d) is the one to hold on to. A Florida-licensed engineer’s signed and sealed evaluation is itself one of the recognized routes — which tells you that engineering judgement is inside this system, not a separate thing bolted on afterwards. Keep that in mind for Section 2002.7 below.

The entities doing that work are themselves accredited. Rule 61G20-3.008 limits Commission approval of an evaluation entity to the scope of its accreditation, and requires accreditation against ISO/IEC 17065, Conformity Assessment — Requirements for Bodies Certifying Products, Processes and Services. An evaluation entity also has to file a Certificate of Independence under Rule 61G20-3.009.

That is a serious system, and it is worth understanding what it produces: a documented finding that a specific product, in a specific configuration, tested or analyzed a specific way, meets stated criteria. Read the approval and it will tell you the product, the configuration and the design pressures it was approved to carry.

None of those three things is chosen by the manufacturer to suit your house.

The loads are a property of your lot, not of the part

Chapter 20 of the Florida Building Code governs aluminum construction, and Section 2002.4 is where screen enclosure loads are set. Structural members supporting screened enclosures must be designed for wind in both of two orthogonal directions, using the pressures in Table 2002.4.

That table is not a single number. It is a grid. The columns run from an ultimate design wind speed of 110 mph through to 170 mph, and each speed is subdivided by exposure category B, C and D. At 130 mph, the horizontal pressure on windward surfaces is 23 psf in Exposure B, 32 psf in Exposure C and 38 psf in Exposure D. Move to 150 mph and the same three figures become 31, 43 and 51 psf.

Read that as a homeowner and the point is immediate. Two identical cages, built from identical approved extrusions, face loads that differ by more than double across that table. A screened lanai tucked among mature trees inland and one facing open water are not the same engineering problem, and no property of the metal decides which column applies. Your wind speed and your exposure category do.

Section 2002.4 adds a load that has nothing to do with wind at all. Each primary member must also be designed for a 300 pound load applied vertically downward along any 1 foot of any member, not occurring simultaneously with wind. Purlins get a lighter version of the same requirement, at 200 pounds. That is the code anticipating a person and their weight on the frame — during a rescreen, during a pressure wash, during a repair — and it is a structural requirement on the assembled enclosure, not a characteristic of a part in a catalog.

Where site-specific engineering becomes explicit

If there were any doubt that the approval paperwork does not finish the job, the Code removes it in Section 2002.7.

That section provides an alternative method for designing aluminum screen enclosures, allowing the frame to be designed on the basis that portions of the screen are removed, retracted, moved to the open position or cut. It applies only to walls and roofs with 100-percent screen. And it says, without qualification, that frames designed under its screen-removal alternates shall be designed using signed and sealed site-specific engineering, in accordance with the wind load provisions of Section 1609.1.1.

It goes further on method: the design is to be by rational analysis or by 3D finite element analysis, and designs considering those screen alternates must still comply with Section 2002.4 and Table 2002.4, using the 110 mph column as modified by Table 2002.4A with all screen panels in place.

Signed and sealed site-specific engineering is a Florida engineer putting their seal on a design for your enclosure on your deck. A product approval number, however impeccable, is not that document and does not substitute for it.

The obligation the code hands to you

One requirement in Chapter 20 is aimed squarely at the owner, and it routinely surprises people who inherit an enclosure with a house.

Section 2002.3.3 requires that vinyl, tempered glass and acrylic panels be removable, that removable panels be identified as removable by a decal, and that the decal essentially state: “Removable panel SHALL be removed when wind speeds exceed 75 mph.” The decal has to be placed so it is visible when the panel is installed.

Seventy-five miles an hour is well below hurricane strength. It is a strong tropical storm. The design of an enclosure carrying those panels assumes somebody takes them out, and if you have never known that, the assumption underpinning your cage’s wind performance has quietly not been true.

Worth checking on a walk round: are the decals there, and can you still read them?

What a professional looks at, in order

A contractor who knows this material will work through it in roughly this sequence, and you can follow along:

  1. The exposure category and design wind speed for the address. This decides which column of Table 2002.4 governs, and therefore the whole frame.
  2. Whether Section 2002.7’s alternative method is being used. If it is, signed and sealed site-specific engineering is mandatory, not optional.
  3. What the existing deck or footing can actually take. Loads have to land somewhere.
  4. The frame members themselves, including the Section 2002.3.1 minimum of 0.040 inch actual wall thickness for extruded aluminum members.
  5. Product approvals for the components that need them, read for the configuration and design pressures actually approved.
  6. Panels and their decals, if the design includes removable panels.

Notice where product approval sits. It is step five, and it is a check on parts after the structural question has been answered — not the answer to it.

Repair, or a permit-and-engineering job?

The practical value of understanding the distinction is that it tells you which kind of job you are buying.

Replacing screen in an existing frame does not change the structure, and the approval and engineering questions largely do not arise. Replacing a damaged upright like-for-like sits close to that line. Changing the geometry — a taller cage, a wider span, a different roof shape, removing a member — changes the structure that Table 2002.4 applies to, and the engineering question returns whether or not anyone raises it.

The tell in a quote is what the contractor proposes to submit. A scope that changes the frame and proposes no engineering is a scope where somebody has decided the approval numbers will carry the permit. Sometimes they do. When they do not, the schedule stops while the engineering that should have been priced at the start gets done.

What drives the cost

  • Exposure category, more than almost anything else. A higher-pressure column means heavier sections and more of them.
  • Span and height. Both drive member size sharply.
  • Whether site-specific engineering is required. It is a real professional fee and it belongs in the quote as a line, not as a surprise.
  • Anchorage into the existing deck, which may need work the enclosure price does not obviously include.
  • Removable panels, which add hardware and add the maintenance obligation above.

Three mistakes worth avoiding

Treating an approval number as an engineering approval. It certifies a product against criteria. It does not certify your structure at your address.

Comparing two quotes on the approval brand. The meaningful comparison is the exposure category assumed, the design wind speed used, and whether engineering is included — none of which appear on a product label.

Assuming the panels look after themselves. If your enclosure has removable panels, Section 2002.3.3 expects them to come out above 75 mph, and the decal is the code’s way of telling you so.

Before you sign

Ask for four things in writing, and they are all reasonable requests:

  • the design wind speed and exposure category the quote assumes
  • whether the design relies on Section 2002.7, and if so, who is sealing it
  • the product approval numbers for components that require them, with the configuration and design pressures each one was approved for
  • what happens to the existing anchorage

A contractor who works to this standard will have those answers ready, because they are the same answers the building official will ask for. One who treats the questions as an obstacle has told you something useful about how the job would have gone.

This guide explains Florida’s product approval rules and the Florida Building Code’s aluminum provisions in plain language and is not legal advice. The editions adopted by your jurisdiction, and the building official’s determination for a specific property, control what is actually required.

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