Top 10 Construction Defects & Building Failures in Texas

A forensic consultant's field guide to what fails, why it fails, and what to look for

Nate MacIntyre | Principal Consultant, Construction Science Forensics, LLC The ten defects below account for most of the building failures I am asked to investigate in Texas: foundation movement on expansive clay, site drainage that feeds the foundation, hail damage and deficient roof replacement, wind uplift and windstorm compliance gaps, masonry veneer drainage failures, window and door flashing errors, stucco and EIFS moisture entrapment, cooling-climate humidity and condensation, freeze-related plumbing losses, and elevated walkway and balcony waterproofing failures. None of them are exotic. Almost all of them come down to water, movement, or air arriving somewhere the assembly was not designed to handle. I have spent more than twenty-five years working on building envelopes: writing quality assurance programs before construction, and investigating causes of failure afterward. Texas is a useful state to write about because it is not one building climate. It is several, stacked on top of one another, with hazards that overlap. A house in Amarillo, a condominium in Galveston, and a mid-rise in Austin fail in genuinely different ways, and the reason usually traces back to which environmental driver dominates in that region.

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What follows is organized the way I work through a building: what the defect is, why it happens, what an owner or attorney can actually observe, and what prevents it.

Key takeaways

• Expansive clay drives more residential distress in Texas than any other single condition, and moisture management at the perimeter is usually the controllable variable.
• Texas has no single statewide building code. What applies depends on the city, the county, and in coastal counties, the Texas Department of Insurance windstorm program.
• Hail and wind claims turn on the difference between cosmetic and functional damage, and on whether the replacement work included the details or just the field.
• In a long cooling season, the mechanical system is often the moisture source, not the wall.
• Hard freezes are infrequent, but they consistently find plumbing that was routed as though the climate had none.
• Most of these failures are documented as workmanship or detailing errors, not material failures.

Figure 1. The five environmental drivers behind most Texas building failures.

The ten

1. Foundation movement on expansive clay soils What it is. Differential vertical movement of a slab-on-ground foundation caused by shrinking and swelling of high-plasticity clay beneath and around the perimeter. Why it happens. Across the Blackland Prairie, much of the Gulf Coast, and pockets of Central and South Texas, the near-surface soils change volume with moisture content. The active zone at the perimeter is the part that moves most, because that is where the soil is exposed to weather, irrigation, downspouts,

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and tree roots. Post-tensioned and stiffened slabs are designed to remain serviceable through an anticipated range of soil movement, but they do not stop the soil from moving. When the actual moisture regime differs from the design assumptions, or when fill, moisture conditioning, or beam geometry departs from the drawings, distress follows. Sulfate-induced heave in lime-treated subgrades is a related and less familiar mechanism worth ruling out in parts of North Texas.

Figure 2. Moisture change at the perimeter, not the slab itself, is usually the driver.

Field indicators. Stair-step cracking in brick veneer, diagonal cracks running from the corners of doors and windows, doors that bind or will not latch, separated trim and crown, cracked or arched flooring, and gaps opening at the top of interior door casings. A relative floor-elevation survey is the objective measurement; visible cracking on its own is not a diagnosis. What prevents it. A geotechnical report that actually informs the foundation design; foundation design consistent with the applicable slab-on-ground standard; positive drainage away from the perimeter; downspouts discharged well away from the slab; irrigation kept off the foundation; trees placed with mature root radius in mind; and a moisture-maintenance instruction handed to the owner at closing rather than assumed.

Worth saying plainly: nearly every slab-on-ground foundation in Texas moves. The forensic question is never whether it moved. It is whether the measured movement and the resulting distress exceed the performance criteria that applied to that design.

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2. Site drainage and grading deficiencies What it is. Surface water that is directed toward the building, retained against it, or given no path off the lot. Why it happens. Grading is finish work, and it is often the last thing done, by the least supervised trade, after landscaping has already changed the contours. Flat lots make small errors consequential. On production sites, lot-to-lot drainage swales get filled by fences, patios, or the neighbor's landscaping, and the drainage plan that was approved bears little resemblance to what exists two years later. Field indicators. Ponding within the first few feet of the wall after rain, mulch or soil built up over the weep line or the slab edge, splash staining on siding and brick, efflorescence at the base of masonry, downspouts terminating at the foundation, sunken or filled swales, and patio slabs poured with a slope back toward the house. What prevents it. Verified finish grades against the approved plan, a minimum fall away from the structure over the first several feet, downspout extensions or tightline drains, maintained swales, and slab edge kept visible rather than buried. This is the least expensive item on this list and one of the highest-value.

3. Hail damage and deficient roof replacement What it is. Impact damage to roof coverings, flashings, vents and mechanical equipment, and, just as often, a replacement roof that repeated or introduced defects. Why it happens. Texas sits in one of the most hail-active regions in the country. The Insurance Information Institute, using NOAA data, reported Texas among the states with the highest number of hail events in 2025, and State Farm identified Texas as its largest hail-claim state that year. High claim volume attracts high repair volume, and high repair volume compresses schedules. The result is a large population of roofs that were replaced quickly, sometimes by crews working far from home, with the field shingles renewed and the details reused.

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Figure 3. Cosmetic marring and functional damage are different findings, and so is a re-roof that skipped the details.

Field indicators. Granule loss with corresponding spatter marks on soft metals, bruised shingles that feel soft under thumb pressure, fractured mat with displaced granules, dented and separated metal panel seams, damaged turbines and pipe boots, and, on repaired roofs, fasteners driven above the nail line, reused flashings, missing drip edge, and ridge caps re-set without proper sealing. What prevents it. On the front end, impact-rated coverings and hail guards on condensing units. On the repair end, a scope that includes penetration flashings, drip edge, decking replacement where the substrate is compromised, and manufacturer high-wind fastening. Documenting the difference between cosmetic and functional damage carefully in the field matters because policy language on that distinction varies.

4. Wind uplift and coastal windstorm compliance gaps What it is. Loss of roof covering, sheathing, or structural connection under wind pressure, usually because the load path has a missing link. Why it happens. Uplift resistance is a chain: covering to sheathing, sheathing to framing, framing to top plate, plate to stud, wall to foundation. Each link has to be designed and installed for the reaction it receives. Failures concentrate where the chain was interrupted by a change during construction, or where the specified connector was substituted for something cheaper and never re-checked. Openings matter too, because a breached garage door or window pressurizes the building from the inside and adds internal pressure to external suction.

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Figure 4. Uplift resistance is a chain from covering to foundation; the weakest link governs.

Texas-specific layer. In the designated catastrophe areas, which cover fourteen first-tier coastal

counties and a portion of Harris County east of State Highway 146, the Texas Department of Insurance windstorm program certifies construction, alterations and repairs. Without a Certificate of Compliance, the structure is not eligible for Texas Windstorm Insurance Association coverage. TDI has moved its adopted codes forward over time; as of this writing, applications are being certified to the 2024 International Residential Code or International Building Code. Owners are often surprised to learn that a re-roof performed without certification can affect insurability years later. Field indicators. Missing or under-driven connectors visible in the attic, staple-attached sheathing, no closer nailing at edges and corners, soffits that blew in, unrated garage doors, and gable ends without bracing. What prevents it. Structural observation of connectors before they are concealed, a connector schedule that matches what is actually stocked on site, opening protection consistent with the design pressures, and, on the coast, the certification process treated as part of the construction sequence rather than an afterthought.

5. Masonry veneer drainage and anchorage failures What it is. Water entry and, less often, structural instability in brick or stone veneer that was detailed as a barrier wall instead of a drainage wall.

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Why it happens. Brick veneer is extremely common in Texas, and it is a reservoir cladding: it absorbs water, and water passes through mortar joints. The assembly works only if the water that gets behind the brick can drain back out. That requires a clear air space, a water-resistive barrier lapped correctly, through-wall flashing with end dams, and open weeps. Mortar droppings bridging the cavity, flashing terminated behind the barrier, missing end dams, and weeps omitted or filled are the four errors I see most.

Figure 5. The same wall, detailed to drain and detailed to trap water.

Field indicators. No visible weeps at the base course or above openings, efflorescence and staining

below shelf angles and window heads, damp or deteriorated sheathing found at outlet and hose bibb penetrations, rust staining at lintels, displaced or cracked veneer above openings, and veneer that sounds hollow or shows outward bowing where ties have failed. What prevents it. A mockup, cavity protection during laying, flashing with end dams at every interruption, weeps at the specified spacing, ties installed at the correct spacing and embedment, and a lintel detail that accounts for corrosion and movement. Photographs of the flashing and cavity before the veneer goes up are worth more than any post-construction inspection.

6. Window and door flashing errors What it is. Water entry at the opening perimeter because the assembly was face-sealed rather than drained, or because the layers were lapped in the wrong order.

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Why it happens. Openings are the most detail-intensive part of a wall and typically the interface

between two or three trades. Wind-driven rain, which Texas has in quantity on the coast and in convective storms inland, loads the perimeter directly. When the water-resistive barrier is tucked behind the head flashing instead of over it, or when a sill pan is omitted and replaced with a continuous bead of sealant, the assembly has no way to drain and no secondary defense.

Figure 6. Sequence matters as much as materials at the opening perimeter.

Field indicators. Staining or swelling at the interior sill and jamb, deteriorated sheathing found at the corners of openings during invasive testing, sealant applied continuously across the bottom flange, reverse laps visible where siding was removed, and interior finish damage that appears only after driving rain from one direction. What prevents it. Sill pan first, then jambs, then head, each layer lapped over the one below; bottom flange left unsealed so the pan can drain; manufacturer installation instructions followed rather than approximated; and water testing on the first units of a production run, before the same detail is repeated three hundred times.

7. Stucco and EIFS moisture entrapment What it is. Water that enters behind hardcoat stucco or an exterior insulation and finish system and cannot get out, decaying the sheathing and framing behind an intact-looking wall. Why it happens. Stucco is popular across Central and South Texas and, like brick, it is a reservoir cladding. Over wood framing it needs a drainage plane and a way for water to exit at the base and at every horizontal interruption. Common errors include a single layer of barrier where two were required,

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no weep screed or a screed buried in grade or paving, no flashing at the transition to another cladding, and penetrations sealed only at the surface. Barrier EIFS assemblies on wood framing have a long and well-documented history of concealed damage. Field indicators. Cracking that follows framing lines or radiates from opening corners, staining below windows and at horizontal terminations, a base of wall with no visible drainage, soft spots found with a probe or moisture meter, and elevated readings concentrated below openings and at deck-to-wall intersections. What prevents it. A drainage cavity or drainable barrier assembly over wood framing, the specified number of barrier layers, weep screed held above grade and paving, kickout flashing where a roof edge meets a wall, control joints where the standard calls for them, and sealant joints designed with backer rod and proper geometry rather than caulked over.

8. Cooling-climate humidity, HVAC and condensation What it is. Interior moisture and microbial growth generated by the mechanical system and by pressure imbalance, rather than by a leak in the envelope. Why it happens. Most of Texas has a long cooling season, and much of it is hot-humid. Air handlers and ducts are commonly located in vented attics that reach extreme summer temperatures. Supply leakage depressurizes the house and pulls humid air through the envelope; return leakage pulls hot attic air into the system. Oversized equipment satisfies the thermostat quickly, short-cycles, and never runs long enough to remove latent load, so indoor relative humidity stays high even when the thermostat reads comfortably. Add inward vapor drive from sun-warmed wet brick or stucco, and a vapor-closed interior finish, and condensation has somewhere to collect.

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Figure 7. In a cooling climate, the moisture source is often mechanical, not architectural.

Field indicators. Musty odor with no identifiable leak, condensation on supply registers and duct boots, mold behind vinyl wallpaper or on the back of furniture placed against exterior walls, elevated relative humidity readings during mild weather when the system runs less, and doors that whistle or resist opening because of pressure imbalance. What prevents it. Load calculations rather than rules of thumb, ducts and equipment inside conditioned space where the design allows, tested duct leakage, balanced returns and transfer paths, dedicated dehumidification where the latent load warrants it, and interior finishes that let assemblies dry inward.

9. Freeze-related plumbing and envelope losses What it is. Burst supply piping and the water damage that follows, in buildings designed and detailed for heat. Why it happens. Hard freezes in Texas are infrequent enough that plumbing is routinely routed through vented attics, exterior walls, and attached garages. Winter Storm Uri in February 2021 made the consequences visible at scale, and insurers have continued to report substantial frozen-pipe losses in Texas in ordinary winters since. The failure is rarely the pipe material; it is the location, the absence of insulation or heat trace, and, in multifamily and commercial buildings, wet fire sprinkler systems in unheated attics, breezeways and stair towers.

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Figure 8. Freezes find the same locations every time, and most are inexpensive to address.

Field indicators. Water staining at ceilings that appears during a thaw rather than during rain, split copper or PEX at attic runs and garage walls, damaged hose bibbs and above-grade backflow assemblies, and, in the aftermath, moisture that has migrated well beyond the visible stain. What prevents it. Relocating vulnerable runs where practical, insulating and heat-tracing what cannot be moved, freeze-proof hose bibbs, protected backflow assemblies, dry or antifreeze-protected sprinkler systems in unconditioned spaces, and a labeled main shutoff that occupants actually know how to find. A freeze loss is a plumbing event, but the restoration is a building envelope and interior project. Source, migration path, and moisture mapping should all be documented before demolition begins.

10. Elevated walkway, balcony and stair waterproofing failures What it is. Deterioration of the framing and structural support beneath elevated exterior walking surfaces, most often at multifamily properties. Why it happens. Exterior walkways, balconies and stair landings are horizontal surfaces exposed to weather, and they sit directly over occupied space. The waterproofing has to be continuous through the most difficult geometry on the building: the wall interface, the scupper or drain, the guardrail post penetration, and the stair connection. Coatings wear, sealant joints move, drains clog, and guardrail posts penetrate the membrane at the exact point where water collects. Because the damage is concealed inside the assembly, the first visible sign is often deflection or a soft spot underfoot.

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Field indicators. Ponding on the walking surface, cracked or debonded coating, staining and

efflorescence on the underside or at the soffit, corrosion at rail bases and connectors, spongy areas underfoot, and separation at the wall-to-deck transition. What prevents it. Positive slope to drains, a continuous membrane turned up at the wall and lapped correctly with the wall barrier, guardrail attachments detailed to avoid membrane penetration or flashed properly where penetration is unavoidable, and a written maintenance interval for coatings and sealants. Where structural elements are concealed, periodic invasive inspection is the only reliable way to know their condition.

An illustrative case study

The following is a composite drawn from several matters and does not describe any single project, party or dispute. A twelve-year-old two-story residence in a North Texas suburb. The owners reported sticking doors, a diagonal crack over the family room window, and a musty odor in one bedroom. The prior consultant's report attributed everything to foundation movement and recommended piers. A relative elevation survey did show differential movement, concentrated along one side. But the pattern was localized rather than global, and the low corner was directly below a downspout that discharged at the slab, on a side where the finish grade fell toward the house because a patio had been added after closing. A static plumbing test came back clean, which mattered, because an under-slab leak would have changed the repair entirely. The musty odor turned out to be unrelated. The air handler was in the attic, the return plenum leaked, and interior relative humidity ran high through mild weather. Growth was on the back of a bookcase against an exterior wall, on a surface kept cool by a poorly insulated corner. Two separate causes, two separate scopes, and a piering recommendation that would not have addressed either one. The point is not that the first consultant was careless. It is that a single visible symptom in Texas can have more than one mechanism behind it, and the mechanisms have to be separated before anyone prices a repair.

How these investigations are actually run

• Document review. Plans, specifications, submittals, the geotechnical report, permits and inspection records, warranty correspondence, maintenance history, and prior reports.

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• Non-destructive observation. Visual survey, relative elevation survey where movement is alleged, moisture meters and thermal imaging, and aerial documentation of roofs and elevations where site conditions allow.
• Targeted testing. Water testing to recognized standards at representative conditions, static plumbing tests, and invasive openings placed to answer specific questions rather than to survey at random.
• Analysis against the applicable standard. The code edition and local amendments in effect at permit date, the manufacturer's published instructions, the contract documents, and the relevant industry standard, in that order of specificity.
• Reporting. Findings, the basis for each opinion, photographic documentation tied to location, and a scope of repair that addresses the mechanism rather than the symptom. The step most often skipped is the first one.

The Texas regulatory picture, briefly

Texas is a home-rule state and does not enforce a single statewide building code. State law sets minimums that municipalities work from, including the International Residential Code for one- and twofamily dwellings and the International Building Code for commercial and multifamily construction, and the state energy code adopted under Chapter 388 of the Health and Safety Code applies in unincorporated areas as well as within cities. Beyond that, the operative document is the local ordinance, with its amendments. Some large counties have adopted codes for their unincorporated areas; many have not, which means a house can be built with no permit and no inspection at all. On the coast, the Texas Department of Insurance windstorm program adds a separate layer tied to insurability rather than to the municipal permit. Two adjacent properties can therefore be subject to meaningfully different requirements. On the legal side, Chapter 27 of the Texas Property Code, the Residential Construction Liability Act, governs the pre-suit notice and offer-of-repair process for residential defect claims, and was amended in 2023. The statute of repose for contractors sits in Chapter 16 of the Civil Practice and Remedies Code; House Bill 2024 created a shortened six-year period for qualifying residential contractors who provide specified written warranties, with the longer period continuing to apply otherwise. I am not an attorney and none of this is legal advice, but the deadlines shape when an investigation needs to happen, and owners frequently learn about them too late.

Frequently asked questions

What is the most common construction defect in Texas?

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For residential buildings, foundation distress associated with expansive clay soils is the most frequent complaint, particularly in North and Central Texas and along the Gulf Coast. It is also the defect most often misattributed, because drainage, irrigation, vegetation and under-slab plumbing leaks can produce very similar symptoms and call for different repairs.

Does Texas have a statewide building code?

No. Texas does not enforce a single statewide building code. State law establishes minimum model codes that municipalities adopt and amend, and the state energy code applies statewide, but the enforceable requirements depend on the local jurisdiction. In many unincorporated areas there is no building permit or inspection program at all.

Is hail damage to a roof always covered, and is cosmetic damage the same as functional damage?

Coverage depends on the policy, and policy language on cosmetic damage varies. From an engineering standpoint the distinction is real: functional damage shortens the service life of the assembly, such as a fractured shingle mat or a punctured membrane, while cosmetic damage changes appearance only. Documenting which one is present, and where, is the part that matters in a dispute.

What is a WPI-8 and do I need one?

It is the Texas Department of Insurance Certificate of Compliance for windstorm construction. If a structure is inside the designated catastrophe areas on the Texas coast, new construction, alterations and repairs generally have to be inspected and certified to remain eligible for Texas Windstorm Insurance Association coverage. That includes re-roofs, which owners often do not realize until they try to place coverage.

How long do I have to bring a construction defect claim in Texas?

It depends on the claim, the party, and the contract. Texas has both statutes of limitations and a statute of repose, and the repose period for qualifying residential contractors was shortened in 2023 where specified written warranties are provided. Residential claims also run through the Residential Construction Liability Act notice and offer-of-repair process. These are legal questions for counsel, but they are worth asking early, because investigation takes time.

Should I get an inspection before buying an existing Texas home?

Yes, and consider what the general inspection will not cover. Concealed conditions, foundation performance relative to design criteria, and the condition of waterproofing beneath elevated walkways typically require a separate scope. On a property with visible distress, a relative floor-elevation survey and a static plumbing test are inexpensive relative to what they can reveal. Disclaimer. This article is general professional commentary for educational purposes. It is not a professional opinion regarding any specific property, project, party or dispute, and it is not legal advice. Codes, standards and

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statutes change, and local amendments vary. Confirm the requirements applicable to your jurisdiction and to the permit date of the building in question.

References and further reading

• Texas Local Government Code, Chapter 214 - municipal adoption of the International Residential Code and International Building Code.
• Texas Health and Safety Code, Chapter 388 - state energy code, applicable in unincorporated areas as well as within municipalities.
• Texas Department of Insurance - Windstorm Inspections Program: designated catastrophe areas, Form WPI-1 application and Form WPI-8 Certificate of Compliance; adopted building codes for windstorm-resistant construction. tdi.texas.gov/wind
• Texas Windstorm Insurance Association - eligibility requirements for coverage in the designated catastrophe areas.
• International Building Code, Section 1808.6, and International Residential Code provisions for foundations on expansive soils.
• Post-Tensioning Institute, DC10.5 - Standard Requirements for Design and Analysis of Shallow PostTensioned Concrete Foundations on Expansive Soils; and the Texas Shallow Post-Tensioned Concrete Foundations code based on it.
• ASCE Texas Section - Guidelines for the Evaluation and Repair of Residential Foundations.
• The Masonry Society, TMS 402/602 - Building Code Requirements and Specification for Masonry Structures, including veneer anchorage, flashing and weep provisions.
• ASTM C1063 and ASTM C926 - lathing and application of portland cement-based plaster; ASTM E2112 - installation of exterior windows, doors and skylights.
• ASTM E1105 and AAMA 501.2 - field water penetration testing of installed fenestration and curtain wall.
• ASHRAE Handbook - Fundamentals, and ACCA Manual J and Manual D for residential load calculation and duct design.
• Insurance Information Institute - Facts and Statistics: Hail, compiling NOAA severe weather data by state.
• Texas Property Code, Chapter 27 - Residential Construction Liability Act, as amended in 2023 by House Bill 2022.
• Texas Civil Practice and Remedies Code, Sections 16.008 and 16.009 - statutes of repose, as amended in 2023 by House Bill 2024.

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