Supplemental Beams & Jacks in Sunbury, GA
Sunbury floors, solid beneath old framing.
Historic marsh-front Sunbury homes carry high humidity that rots sills and posts and leaves floors bouncy. New steel steadies the old framing.
Supplemental Beams & Jacks in Sunbury
Why Sunbury homes need this, and how we do it
Sunbury is a historic settlement on the marsh, and its older homes have stood through a lot of humid coastal weather. The moisture that hangs around a marsh-front crawl space is hard on original framing. Sills rot along the base, wood posts break down where they meet the damp ground, and the girders lose support. The floors above go bouncy and dip where the old wood has given way.
We steady it with new steel. Adjustable jack posts go in on proper concrete footings so they carry the load to firm ground, and a supplemental steel or engineered beam takes over the spans the aged framing can no longer hold. Rotted sills, posts, and girders are cut out and replaced. We raise the floor a little at a time so the historic finishes above are protected.
Once the steel is in the bounce is gone and the floor holds firm again. Because marsh humidity is what wore the old wood down, we recommend drying the crawl space in the same visit so the new supports and framing stay sound in a place that has always been damp.
What’s included
The whole load path - not just the soft spot
Every supplemental beams & jacks we do in Sunbury, GA follows the same checklist. We support the framing that failed and the framing that is about to. A typical beam and jack scope includes:
- Elevation readings across the floor to find the real low point
- New poured concrete footings sized to the load and the soil
- Adjustable steel jacks set plumb and shimmed to bear evenly
- Supplemental beam under long or undersized joist spans
- Rotted or split posts, girders and joists replaced or sistered
- A slow, staged lift so plaster, tile and trim are not shocked
- Photo documentation before, during and after
What we won’t do
We will not stack blocks or shim on bare dirt, we will not crank a jack fast enough to crack your ceilings, and we will not put new steel under wet, rotting framing without telling you the moisture has to be dealt with as well.
What to expect
Four steps, start to finish
Free inspection
We read elevations across the floor, check every post and girder, and find where the support actually failed.
Written plan & price
You get the jack count, the beam length and any framing replacement itemized at one fixed price, with financing options.
Install, usually one day
Our crew digs and pours the footings, sets the steel, and brings the floor up in measured stages.
Walkthrough & warranty
We show you the after photos, re-read the elevations with you, and hand over the workmanship warranty in writing.
Supplemental Beams & Jacks in Sunbury
Questions Sunbury homeowners ask us
My historic Sunbury home is marsh-front and the floors are bouncy, is the humidity rotting the sills?
High marsh humidity rots the sills and softens the framing underneath, and that's what makes the floor bounce. We shore it with steel jacks on concrete footings and a supplemental beam, working from the crawlspace.
The sills under my old marsh-front house feel soft, what's happening?
The constant humidity keeps the sills damp until they rot and lose their strength. We set steel jacks on poured footings and a beam to take over the load so the floor stops giving, usually in a day.
Why does my historic home's floor bounce more near the outside walls?
Bounce near the outer walls often traces to rotted sills where the humidity hits hardest. We add steel jacks on concrete footings and a supplemental beam along that edge to firm it up from below.
Can you fix rotted sills in an old home without harming the historic floors?
Yes, we work from underneath, supporting the rotted sills with steel jacks on footings and a beam so your historic floors stay put. Most Sunbury jobs are done in a single day.
How much worse does bounce get if I leave rotted sills alone in a humid spot?
Left alone the rot spreads and the bounce turns into real sag, so it's worth catching early. We'll do a free written inspection and, if needed, set steel jacks on footings and a beam to stop it.
“Our floors had gotten soft and the whole downstairs smelled musty. They inspected the crawl space, showed us photos of the rot and moisture, and fully encapsulated it. The smell is gone, the floors feel solid, and our humidity finally stays under control.”
Free inspection · No obligation
Find out what's really happening under your Sunbury home
We measure, photograph and explain what we find - then give you one fixed written price. No pressure, and no obligation to book anything.
- Free inspection with a written report
- Fixed price before any work starts
- Our own trained crews - never subcontractors