Tampa Bay specifics · The Wind Zone
Lower Than South-East Florida, and Still Serious
Design wind speeds in the Tampa Bay area are generally lower than in south-east Florida, which changes the pressures products have to meet.
Your address and a list of openings. We will tell you what each one actually has to resist before anybody quotes a product.
Not HVHZ
Tampa Bay is outside the High Velocity Hurricane Zone
FL approval
Statewide Product Approval is the path here
Design pressure
Set by your address and your opening, not by a brand
Licensed
General contractor, licensed in the state of Florida
Both over- and under-specification happen
A homeowner sold an HVHZ product for a non-HVHZ address may be over-specified and overpaying. Another, on an exposed waterfront lot at height, may be under-specified because somebody used a general figure rather than calculating. Both come from quoting a product before calculating the requirement.
The under-specification risk is the more serious one and gets less attention. A homeowner focused on avoiding an unnecessary HVHZ premium can end up with products that do not meet the pressures on their most exposed openings, which is a worse outcome than overpaying.
What the calculation uses
- The design wind speed for the specific location.
- Exposure category, which changes with surroundings.
- Building height, and the height of each opening.
- Opening size, and whether it is in a corner zone.
- Whether the building is enclosed or partially enclosed.
Why two neighbors can need different products
Exposure category accounts for what surrounds a building. A house facing open water or open ground with nothing upwind is in a more severe exposure than one of the same size surrounded by mature trees and other houses, and the calculated pressures differ accordingly.
Height matters too, and so does the position of each opening on the elevation. This is why a per-opening schedule is the only meaningful basis for specification and why a single figure quoted for a house is not information.
How we handle it
- 01Calculate design pressures per opening before quoting product.
- 02Use the actual location, exposure and height.
- 03Provide the pressures in writing.
- 04Select products approved to meet them.
Corner zones need higher-rated units than the middle of a wall. It is a standard part of the calculation, it is routinely ignored in quotes, and it is why some houses lose exactly the corner windows first.
Said plainly
Where we stop
We do not perform the structural wind calculation ourselves where a design professional is required. We work to calculated pressures rather than to a general assumption.
FAQ
Common questions
- Are Tampa Bay wind speeds lower?
- Generally lower than south-east Florida, which changes the required pressures.
- Does that mean cheaper products?
- It means correctly specified ones. Some openings still need high ratings.
- What are corner zones?
- Areas near building corners with higher pressures. Routinely ignored in quotes.
- Who calculates it?
- A design professional where one is required. We work to calculated figures.
What we install
Impact Windows
The core product. What matters is not the brand but whether the specific unit is approved for the pressure your specific opening has to resist.
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Sliding Glass Doors
A large sliding door is the biggest single opening in most homes and the one with the highest loads.
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Entry Doors
An impact entry door is a rated assembly — slab, frame, hardware and any glazing — approved as a unit.
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Garage Doors
The largest opening in most homes, and the one most often left unrated after everything else is done.
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French & Specialty Openings
French doors, arched heads, round and other non-standard openings, where the approval may not cover the shape.
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Impact Glass Retrofit
Replacing only the glass in existing frames sounds cheaper. It usually does not achieve a rated assembly.
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More tampa bay specifics
Tampa Bay Is Not HVHZ
The High Velocity Hurricane Zone covers Miami-Dade and Broward. Tampa Bay is outside it, and works under statewide Florida Product Approval.
Read more →
Surge & Water
The Tampa Bay area has significant surge exposure, and impact windows address wind and debris rather than water rising from below.
Read more →
Older Housing Stock
Much of the Tampa Bay housing stock predates current requirements, and what the wall is actually made of decides the installation.
Read more →
Next step
Find out what is actually wrong with it.
An inspection, photographs of what we found, and a written scope. If the honest answer is that it can wait another season, that is the answer you will get.