Slab Houses and Why Your Deck May Be Freestanding
Most newer housing around Gainesville is slab-on-grade, so there is often no band joist for a ledger. Why freestanding is usually the better structure.
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Roofs, screen rooms, and screened enclosures over a deck, which is what turns an outdoor space into one you use in July.
In north central Florida the covered deck is not a luxury version of a deck, it is often the version that gets used. Two things drive it. The sun is direct and hot for most of the year, which means an open deck facing west is unusable for the best part of the afternoon between spring and autumn. And the wet season runs through summer with afternoon storms that arrive on a near-daily rhythm, so an uncovered deck loses a good part of the season it was built for. Add mosquitoes in a county full of wetland and hammock, and a screened structure is the difference between furniture that gets sat on and furniture that gets rained on. Structurally this is a bigger job than a deck. A roof adds dead load onto the deck framing and posts, which means the footings under it are sized for the roof as well as the floor. It adds uplift, which is a wind question and therefore a connection question, and it usually means a tie-in to the existing house roof that has to be flashed properly to avoid making a leak where there was not one. Screen enclosures bring their own considerations around framing, kickplates at the base, and doors that close and latch reliably rather than after a shove.
For most houses, yes, and the reason is calendar arithmetic rather than comfort. Summer afternoons here bring frequent thunderstorms and direct sun that makes an unshaded west-facing deck unpleasant for hours at a time. A roof over even part of the deck converts those hours into usable ones and protects the furniture the rest of the year. The usual pattern that works well is a covered section next to the house for the table and an open section beyond it for sun when people want it.
Adding a roofed or screened structure is more than a surface change, so yes, this is permitted work. City addresses go through the City of Gainesville Building Division and addresses in unincorporated parts of the county go through Alachua County Growth Management. Because there is a roof involved, plan review is a real part of the process rather than a formality, and the structural connections are exactly what an inspector will want to see before it is closed in.
Standard fibreglass mesh is the default and it is fine for most porches. Heavier pet-resistant mesh is worth it at the lower panels where a dog or cat will push against it, and some people run it only on those panels rather than the whole enclosure. Solar screen cuts a portion of the heat and light coming through and is worth considering on a west-facing wall, at the cost of some view. The framing and the door hardware matter more to how the room feels day to day than the mesh does.
Only if the existing structure can carry it, and that has to be established before anything is designed. A deck built to support people and furniture was not necessarily built to support a roof, uplift on that roof, and the extra post loads that come with it. The check covers footing size, post size and spacing, beam capacity, and the condition of everything at grade. Sometimes the answer is yes with additional footings and posts; sometimes the honest answer is that rebuilding the frame costs less than reinforcing it.
A properly built one does, and the failures are always at the edges rather than the mesh. The gaps that matter are around the door, at the kickplate, where the screen frame meets the house wall, and at the roof line. This is worth caring about here: Alachua County has a lot of wetland and hammock ground, and an enclosure that is ninety percent sealed is an enclosure that does not work on a summer evening.
Related Reading
Most newer housing around Gainesville is slab-on-grade, so there is often no band joist for a ledger. Why freestanding is usually the better structure.
Four places to look and one tool to use. Guards, the ledger line, post bases and stairs account for nearly every serious defect found on an older deck.
Raised floors and older wall assemblies make historic Gainesville a different deck market from the subdivisions west of town, and a more interesting one.
Other Work
Deck projects tend to arrive in pairs, because the yard is only opened up once. Shade goes up while the frame is accessible, stairs and a landing get sorted while the grade is already being worked on, and a surface gets replaced while somebody is under the deck checking the joists anyway.
A new deck designed for the yard it sits in, framed to the residential code and set on footings that reach undisturbed ground
Capped composite and PVC boards over a code-framed structure, chosen for how they behave in full north Florida sun
Southern yellow pine, cedar, and tropical hardwood decks built with the treatment rating matched to where each piece sits
Soft boards, rotted joist ends, loose ledgers, and failed post bases repaired after somebody has worked out why they failed
Call (352) 301-3643 or use the quote form for a free quote. A local deck company handles it from there.