Palm Harbor & Pinellas County
Foundation & Block Wall Waterproofing for Florida Homes
Florida homes don't have basements — but the bottom of your block wall acts like one. We stop water at the source: below-grade wall sealing, grading and drainage.
Signs you have a foundation water problem
Water or dampness along baseboards
White staining on block or stucco near the ground
Cupping wood or failing vinyl plank or tile on the slab
Musty smell with no visible leak
Water on the slab after heavy rain
Soil or mulch piled against the wall
No gutters, or downspouts dumping at the foundation
A yard that slopes toward the house
White mineral staining is also called efflorescence — a sign that moisture has moved through the wall.
Why Florida slab & block homes take on water
A high water table and saturated soil push water against the base of the wall. Unsealed concrete block is porous: it can soak up water and carry it into the slab edge and wall cavity.
Bad grading, missing gutters, and irrigation spraying against the house keep that wall wet. Stucco carried below the soil line can trap moisture instead of letting the wall dry.
Slab-on-grade block homes need a different approach from an interior basement system. Our specialty is finding the entry point and addressing the exterior stem wall, grading, and drainage together.
Our process
Moisture diagnosis
Meter readings, hose testing, and source isolation show where the water comes from.
Expose the stem wall
Excavate the perimeter down to the footing or slab edge, with excavation suited to the structure and site.
Clean, prep, and repair
Clean the exposed block and repair cracks and voids before sealing.
Seal below ground
Apply a below-grade waterproofing membrane to the exposed stem wall.
Install drainage where needed
Use clean stone, filter fabric, and perforated pipe where needed, tied to a proper discharge point.
Correct the grade
Regrade so water moves away from the house. Maintain the required clearance below the stucco line for termite inspection.
Finish the perimeter
Address gutters and downspout extensions, then restore the turf or sod disturbed by the work.
Services included
Stem wall & block wall waterproofing
French / subsurface drains and catch basins
Yard regrading and swales
Seamless gutters and downspouts
Slab-edge and threshold sealing
Crawlspace moisture control for raised and older homes
Post-storm and flood water-intrusion repair
Foundation waterproofing questions
Water at the wall or slab? Start with the source.
Request a free moisture diagnosis. Tell us where the water appears and whether it follows heavy rain.
Call (727) 641-1112Davis Build & Restore — Florida Certified Building Contractor CBC 1256241. Licensed & insured.
Request a Free Moisture Diagnosis
Tell us about the water around your wall or slab.