Water damage drying
Fire & smoke cleanup
Mold remediation
Storm response
Sewage cleanup
ReconstructionFree visual inspection and a written scope of work before any mitigation begins - photos, moisture readings, and drying logs go in your claim file
The scope we write is the scope we bill. Anything new gets shown to you, in writing, before we touch it.
Get your free estimateFast, Reliable Mold Remediation Across Fresno
Mold in a Fresno home usually means water got somewhere it shouldn’t have, and on this side of Fort Bend County, that water often comes from above. Flat and low-slope roofs along FM 521, patched again and again over decades, fail at the flashing seams during wind-driven rain. Water enters the ceiling cavity, soaks the drywall, and mold begins inside 24 to 48 hours, long before any stain shows on the ceiling you see. Our crews respond to Fresno homes every day, and when you call (325) 423-6800, a live person answers and schedules a technician who knows these older roofs and the damage they cause.

Why Tidemark Water Damage Houston Is Fresno’s Preferred Mold Remediation Company
We’re independently owned and operated, working to the Cedarwell Care Promise, and our technicians hold IICRC, RIA, and IFA credentials. That matters in Fresno because the houses here are not uniform. A 1970s brick-veneer duplex near Fresno High School and a 2015 tract home off Trammel Fresno Road fail differently, and the remediation has to match the structure, not a template.
We show up the way we’d want someone showing up at our own front door. Background-checked, uniformed technicians arrive with shoe covers and drop cloths already on the truck. A written price lands in your hand before any equipment comes through the door. And after the job, you get a photo of the clean-up before the crew leaves, so you see exactly what was done and how we left it.
Rick Sumner leads our team, and the standard he sets is simple: explain the price before the work, protect the floors and furnishings, and stand behind every job for 365 days. If it’s not done right, we make it right. That promise covers every mold job in Fresno, no exceptions, no fine print.
Restoration work we handle






Professional Mold Removal in Fresno
Professional Mold Removal in Fresno nearly always starts with a ceiling cavity or a wall base that got wet and never dried. The job involves containment, removal of saturated drywall and insulation, antimicrobial treatment of the framing, and drying with air movers and dehumidifiers until moisture readings confirm the structure is stable. Most Fresno mold removal projects run between $1,800 and $4,500 depending on the square footage affected and whether the roof above needs a temporary patch, and you see the written number before we start.
Flat-Roof Ceiling Cavity Remediation
Homes along FM 521 and the older subdivisions around Fresno High School share a pattern: original low-slope roofs patched multiple times, flashing that no longer seals, and ceiling cavities above closets and bathrooms that catch every storm. We set containment, cut out the damaged drywall with a clean margin, treat the top plates and roof sheathing, and dry the cavity to below the dew point.
Slab-On-Grade Wall Base Treatment
When a Fresno home on expansive clay soil cracks after a water intrusion, moisture climbs the wall base and sits under vinyl plank flooring. Standard drying won’t reach it. We use moisture mapping with penetrating meters to find the true edge of the water line, then remove baseboards, drill strategic drying ports, and monitor daily until the readings match the dry reference points we took at the start.
Mold Inspection in Fresno
Mold Inspection in Fresno is how we answer the question every homeowner has after a storm or a slow leak: is there mold where I can’t see it? A full inspection includes thermal imaging of ceiling surfaces, moisture mapping of walls and floors, and air sampling where visible mold or a musty odor suggests hidden growth. Most Fresno inspections run $350 to $700, and the report tells you what is growing, where the moisture is coming from, and what actually needs to be done, nothing more.
Hidden-Cavity Moisture Mapping
We pay close attention to closets and bathrooms in Fresno’s older homes, the spaces directly under flat-roof seams that have been patched over the years. Moisture meters read through drywall and vinyl plank to find wet insulation and framing before the staining shows. That early detection is what turns a four-figure repair into something you’d never have guessed happened behind the closet door.
Post-Remediation Verification
After we finish a mold removal, the final step is verification that the structure is dry and the air inside the containment zone reads clean. We document everything: before and after moisture readings, photos of the treated framing, and a signed scope of what was done. You keep that paperwork for your records and for any insurance adjuster who asks.

Trusted Brands We Service in Fresno
Our Fresno crews run professional-grade equipment from Phoenix, Dri-Eaz, and B-Air, the same machines used by restoration specialists nationwide, and our IICRC-credentialed technicians know how to set them correctly for a humid subtropical climate. We also use Injectidry systems when we need to dry wall cavities without cutting from the front, which keeps your living room intact while the framing dries behind it. You don’t need to know the brand names to get a good result, but when the equipment is this caliber, the drying data comes back cleaner and the job finishes faster.
See the difference
Before
After
Before
After
Before
AfterCommon Mold Remediation Problems We See in Fresno Homes
- Flashing failure on old flat roofs. The seams where a low-slope roof meets a parapet or vent pipe are the first place water finds a path during a Fresno downpour. Once the ceiling cavity gets wet, mold grows behind closet doors and above bathroom ceilings before the stain bleeds through.
- Moisture trapped in slab-on-grade wall bases. Expansive clay soil cracks under Fresno homes, and when water intrudes through a cracked slab or shifted wall, it saturates the bottom plate and wicks into drywall and vinyl plank flooring. It stays hidden without penetrating moisture meters, and it grows mold for months.
- Unpermitted attic additions without eave vents. Some 1980s additions near Fresno High School were built without proper venting, so the hot, wet summer air condenses inside the attic and molds the roof sheathing by August. The mold is visible only from inside the attic, and the fix is ventilation plus treatment, not just bleach.
- Ceiling collapses after repeated roof patches. In the older subdivisions along FM 521, original flat roofs have been patched so many times that the decking itself is compromised. A heavy tropical storm saturates the plywood, the ceiling lets go, and the water comes down as Category 1, requiring full cavity drying and often new roof sheathing.
Pricing for Mold Remediation in Fresno, TX
Mold remediation in Fresno typically falls between $1,800 and $4,500 for a contained cavity or wall base project, and $350 to $700 for a stand-alone mold inspection. Larger jobs, like a whole attic after a ceiling collapse, can run $6,000 to $12,000 when the roof sheathing needs replacement. What moves the number is the square footage of wet material, whether the roof above needs opening, and how many days of drying the structure requires. You get a written price before any tool comes off the truck, and the estimate is free. Call (325) 423-6800 to schedule an inspection in Fresno.
We Also Serve Cities Near Fresno
Our crews serve Manvel, Pearland, South Houston, and Pasadena with the same written-price-first standard and 365-Day Done Right Promise. If you’re nearby and dealing with water or mold, Mold Remediation is one call away, and if you’re still deciding whether it’s time, our Mold Remediation in Fresno guide walks through what to watch for before you spend a dollar.
Serving Fresno, TX - Our Local Coverage Area
We’re based in the Fresno area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Mold Remediation in Fresno
Mold starts within 24 to 48 hours of water entering the ceiling cavity, often before any stain shows on the visible surface. Call us the day you see the leak or the water mark, and we can usually dry the cavity before the growth becomes a full remediation project.
Yes, we inspect homes in every Fresno subdivision, including the 1960s and 1970s brick-veneer homes near Fresno High School where flat-roof flashings and foundation movement are common. The inspection includes moisture mapping, thermal imaging of ceilings, and air sampling where needed, and you get a written report with a clear scope of any work recommended.
Rainwater that comes straight through a roof leak is Category 1 water, clean at the source. If we reach it within the first day or two, we can often dry the cavity with dehumidifiers and air movers without cutting open the ceiling. Once it sits and contacts insulation or dust for several days, it degrades to Category 2 or 3 and needs removal, not just drying.
Yes, the sequence is what matters: extract standing water, remove the collapsed drywall and soaked insulation, treat the framing with antimicrobial, and dry the cavity to below the dew point before any new material goes back. Our crews do this every week in Fresno after tropical storms, and the pre-loss condition is restored quickly when we get the call early.
We start with penetrating moisture meters to find the full extent of the wet wall base and under-floor layers. Then we remove the affected drywall and baseboard, dry the framing with air movement and Injectidry panels where the cavity is tight, and treat the sill plate. The slab crack itself is a separate structural repair, but the mold side is something we handle completely, with a written price before we open the first wall.
Mold does not wait for business hours in Fresno, and neither do we. If you’ve found a stain, smelled something musty, or just bought a flat-roof home and want to know what’s above the closets, call our team at (325) 423-6800 for a free estimate. Rick Sumner and the crew at Tidemark Water Damage Houston will walk you through it, in writing, before anything gets touched.
Written by Rick Sumner, Owner at Tidemark Water Damage Houston, serving Fresno and surrounding Fort Bend County communities.