If exterior paint is peeling, blistering, staining, or repeatedly growing mildew on a Tampa stucco wall, do not begin with a color choice. Begin with the water path and the failed layer. A new coating can hide a symptom briefly; it cannot repair an active roof, flashing, sealant, plumbing, irrigation, drainage, or wall-assembly problem.
Before seeking bids, photograph each failure in context, mark its height and orientation, note what is above and behind it, and record whether it changes after rain, irrigation, air-conditioning use, or a dry week. Ask bidders to price water-source correction and stucco repair separately from preparation and coating.
Tampa’s rainfall makes drying evidence important
Tampa’s 1991–2020 normal annual precipitation is 49.48 inches. The normal totals for June, July, and August are 7.37, 7.75, and 9.03 inches. Together, those three months account for 24.15 inches, or about 49% of the annual normal (NWS Tampa climate table).
That calculation does not prove rain caused a particular paint failure. It does show why “looks dry” is weak evidence after a wet period, especially on a porous masonry assembly.
EPA says uncontrolled moisture and water that does not dry from building cavities can contribute to rot, structural damage, and premature paint failure (EPA remodeling guidance). Its broader moisture-control guidance warns that coatings can fail when applied before porous materials are sufficiently dry and explains the role of site drainage, cladding, drainage planes, and flashing (EPA moisture-control guide).
Read the pattern before choosing the repair
Different patterns suggest different questions. They do not establish a diagnosis on their own.
| Visible pattern | Questions to investigate | Evidence to request |
|---|---|---|
| Blisters or peeling to bare stucco | Is moisture moving through the wall? Was the surface damp, hot, dirty, or chalky when coated? | Moisture investigation, adhesion test area, preparation and weather records |
| Failure low on the wall | Does irrigation hit the wall? Is soil or mulch bridging the base? Does water drain toward the house? | Photos during irrigation and rain; corrected drainage or clearance scope |
| Stains below openings or roof edges | Are sealant joints, flashing, gutters, scuppers, roof details, or penetrations admitting water? | Repair detail and proof of a dry period before coating |
| White powder or deposits | Is water carrying salts through masonry? Is old coating loose or chalking? | Cleaning method, test area, substrate condition, compatible primer data |
| Cracks that return | Is the crack limited to finish coat, or does it move through the assembly? | Crack map, width and movement record, qualified repair specification |
| Mildew-like spotting | Is it biological growth, dirt, shade-related dampness, or another stain? | Safe identification and cleaning process; nearby moisture-source check |
Manufacturer blistering guidance lists several possible causes: heat on a sunlit surface, moisture moving through the wall, damp substrate, dew or high humidity soon after application, contamination, and inadequate preparation (blistering diagnostic). Use that as a question list, not a remote diagnosis.
Separate water repair from the coating bid
Put two boundaries on the proposal: what must be corrected before the painter starts, and what preparation the painter actually includes. A statement such as “repair and paint exterior” leaves both unclear.
For each photographed failure, ask the bidder to identify the repair, responsible trade, preparation method and acceptance evidence. A drainage or flashing repair is not the same deliverable as removing loose coating. Recurring movement or unsound stucco needs qualified assessment; do not turn it into an unspecified paint allowance.
Before anyone disturbs old paint, establish the lead-safe approach. EPA’s remodeling guidance advises assuming lead-based paint in pre-1978 housing unless an inspection establishes otherwise. This worksheet is not permission to scrape or sand a suspect coating.
New stucco: compare the actual documents, not just the calendar
Sherwin-Williams’ general stucco preparation guidance describes painting after 30 days under normal application and drying conditions, with pH between 6 and 9. Its Loxon white primer data sheet, marked July 2023 and still linked when checked September 13, 2026, instead lists a minimum seven-day cure for new masonry/stucco surfaces and a pH range of 6–13.
Those are different scopes, not competing universal rules. The primer sheet also contains cleaning, moisture, temperature, weather and topcoating conditions. Reaching day seven does not establish that a repaired wall satisfies them. We cite this product to make the difference inspectable, not to select it for a house.
Ask the bidder to attach the current documents for the proposed patch, primer and topcoat and identify how their requirements fit together. Where instructions appear inconsistent, get the manufacturer’s clarification for the actual assembly before work proceeds.
What to settle before accepting the price
Use the failure table above to annotate the proposal rather than creating a second generic checklist. Beside each repair area, fill the gaps that affect price or responsibility:
- Removal boundary: which failed coating or stucco is removed, what remains, and how contamination or old-paint hazards will be handled.
- Acceptance: who evaluates dryness, pH or compatibility where the selected system requires it; the method, location and result; and whether a sample area is needed.
- Coating scope: named products, coats, coverage or film-thickness requirement, and treatment of patches and joints.
- Excluded work: unresolved water or movement problems, additional evaluation, change-order terms and written warranty exclusions.
The elevation-specific weather guide covers the next task: recording conditions during application. Keep that log with the accepted repair scope, product documents and photographs.
Research and limits
LSL rechecked the cited climate, EPA and manufacturer passages on September 13, 2026. The summer calculation is 7.37 + 7.75 + 9.03 = 24.15 inches; 24.15 ÷ 49.48 × 100 = 48.8%. The failure table and bid annotations are our synthesis, not a diagnosis. We did not inspect a house, perform adhesion or moisture tests, or endorse a coating manufacturer.