COMMERCIAL
WATERPROOFING
IN PLANO, TX.
Plano's Legacy Business District is North Texas's corporate HQ capital — Frito-Lay arrived in 1985, Toyota completed its 2.1-million-sq-ft campus in 2017, and AT&T announced a $1.35 billion global headquarters in January 2026. But Legacy's first buildings are now 35-40 years old, and their original sealant systems, waterproofing membranes, and curtain wall glazing compounds have long exceeded designed service life. When AT&T moves 10,000 employees to 5400 Legacy Drive, the standard for the entire corridor goes up. Waterproofing and facade restoration are how existing buildings compete.
What Commercial Waterproofing Includes
Comprehensive moisture protection for commercial facilities — from elastomeric coatings to full membrane systems.
Elastomeric Coating Systems
Spray-applied or roll-applied flexible coatings that bridge hairline cracks and expand with temperature changes. For Legacy District's EIFS-clad and concrete-panel buildings from the late 1980s and 1990s — including the Frito-Lay campus (joined Legacy 1985) and comparable first-generation campuses — elastomeric recoating is often the most cost-effective envelope restoration option short of recladding.
We apply coatings rated for multi-story substrates with proper surface profiling. On Legacy's occupied corporate campuses, we schedule application in phases to keep business operations running throughout the project.
Membrane Waterproofing
Self-adhering and torch-applied sheet membranes for below-grade walls, plaza decks, and parking structures. These create a continuous moisture barrier where elastomeric coatings alone can't handle hydrostatic pressure.
Legacy West and Granite Park campuses include multi-level parking structures and below-grade building sections where original waterproofing membranes from the 1990s and early 2000s are at or past end of service life. The DFW hail corridor — June 2023 produced $7-10 billion in insured losses, May 2024 added $2.3 billion — accelerates surface membrane degradation on exposed deck areas.
Sealant & Joint Replacement
Expansion joints, control joints, and perimeter sealants are the first line of defense — and the first to fail. We remove deteriorated caulking, prepare substrates, and install commercial-grade silicone, polyurethane, or polysulfide sealants matched to your building's movement characteristics.
On Plano's Legacy corridor, curtain wall-to-structure sealant replacement is the most common waterproofing scope item on buildings built before 2000. The wave of HQ relocations — Toyota (2017), AT&T (announced 2026) — means buildings being repositioned as tenants transition also need fresh facade sealants as part of the competitive refresh. We use our 56' and 72' boom trucks for access without scaffolding.
Penetrating Masonry Sealers
Not all Plano commercial buildings are glass and EIFS. Older Plano ISD campuses and municipal buildings throughout the city use brick masonry that benefits from penetrating sealers — they absorb into the substrate without altering appearance, repel water while allowing masonry to breathe, and prevent the trapped-moisture deterioration that film-forming coatings cause on aged brick.
We evaluate substrate porosity, mortar condition, and previous treatment history before recommending a sealer system matched to your building's age and exposure profile.
Industries We Serve in Plano
Why Plano's Legacy Corridor Needs Waterproofing Now
Legacy's original buildings — Frito-Lay's 556,000-sq-ft campus (1985), first-generation Perot-era office buildings from the late 1980s — have been through 35-40 Texas summers and winters. Their sealant systems were designed for 20-25 year service life. The math isn't complicated: they are overdue.
AT&T's $1.35 billion global headquarters at 5400 Legacy Drive — announced January 2026, targeting 2028 occupancy — will bring up to 10,000 employees to the corridor. That changes the competitive landscape for every adjacent building. Facility managers operating 1990s campuses near a brand-new AT&T HQ will face tenant pressure to demonstrate comparable standards. Envelope integrity is where that conversation starts.
Griffin Restoration operates from Whitesboro, TX, and serves the entire DFW corporate corridor. With 26+ years of commercial exterior work and industrial access equipment — 56' and 72' boom trucks — we handle Legacy-scale waterproofing scopes without the overhead and schedule disruption of scaffolding-dependent contractors.
Frito-Lay's 556,000-sq-ft campus — among the oldest major buildings in the corridor, now 40 years of continuous exterior exposure
Announced January 2026, targeting 2028 — resets competitive expectations for every building in the Legacy corridor
Most of Plano's commercial stock is 30+ years old — well past the designed service life of original sealant and waterproofing systems
Why Choose Griffin Restoration
Commercial exterior restoration since 2000
Licensed in TX, OK, AR, and LA
56' and 72' — self-performing capability
Full coverage for commercial projects
Commercial Waterproofing FAQ
What is commercial waterproofing and why does my building need it?
Commercial waterproofing protects your building envelope from moisture infiltration that causes structural deterioration, mold growth, and tenant complaints. Plano's Legacy Business District was conceived by Ross Perot in the early 1980s — Frito-Lay anchored the first buildings in 1985. With a median year built of 1993, Legacy's original campuses have now exceeded the 20-25 year designed service life of their sealant systems, waterproofing membranes, and curtain wall glazing compounds. AT&T's $1.35 billion global HQ arriving at 5400 Legacy Drive in 2028 is raising the competitive bar for every adjacent building in the corridor.
What are the signs that a commercial building needs waterproofing?
Look for water stains on interior walls or ceilings, efflorescence (white mineral deposits) on exterior masonry, bubbling or peeling coatings on exterior surfaces, sealant shrinkage or debonding at curtain wall joints, and musty odors in lower levels. On Plano's 30-40 year old Legacy campuses, the most common sign is sealant joint failure at curtain wall transitions — often not visible until it causes interior damage. The May 2024 ($2.3B) and June 2023 ($7-10B) North Texas hail events accelerated existing sealant degradation on any building that absorbed impact without a follow-up inspection.
How is commercial waterproofing different from residential?
Commercial waterproofing addresses larger surface areas, multiple substrate types (concrete, masonry, curtain wall, metal panel, EIFS), and stricter code requirements. Toyota's 100-acre, 2.1-million-sq-ft Plano campus — the largest commercial LEED Platinum project in Texas — exemplifies the complexity: multiple buildings, multiple cladding systems, occupied tenant spaces requiring phased work. We use industrial-grade systems and self-perform with boom trucks to minimize disruption at large corporate campuses.
What types of waterproofing systems are used on commercial buildings?
The three primary systems are elastomeric coatings (spray- or roll-applied flexible membranes), sheet membrane systems (self-adhering or torch-applied), and penetrating sealers for masonry substrates. For Legacy District's glass-curtain-wall and EIFS-clad buildings — including the former J.C. Penney HQ complex (1.9M sq ft, built 1992) now undergoing $1B redevelopment — precision silicone and polyurethane joint sealants are the most common scope item. For below-grade and plaza applications, we use sheet membrane systems engineered for hydrostatic pressure.
How often should commercial waterproofing be inspected?
We recommend annual visual inspections and a professional assessment every 3-5 years. For Plano's Legacy corridor, buildings from the late 1980s and early 1990s should have been inspected and re-sealed at least once by now — if they haven't been, the sealant system is almost certainly past its designed service life. With AT&T's campus targeting 2028 occupancy nearby, Legacy building owners have a narrow window to complete envelope restoration before elevated demand drives up contractor scheduling timelines.
Related Services
Commercial waterproofing often works alongside these complementary services.
Caulking & Sealant Replacement
Failed sealant joints are the #1 cause of water infiltration in commercial buildings. Often combined with waterproofing for complete envelope protection.
Learn more about our sealant services →Exterior Building Repair
Waterproofing after concrete or masonry repair ensures the restored substrate stays protected. We coordinate both services to avoid redundant mobilization.
See our exterior repair capabilities →Parking Garage Repair
Traffic-bearing waterproofing membranes are essential for parking structures. Our team handles structural repair and waterproofing as a single scope of work.
Explore parking garage services →Protect Your Plano Property
Whether you manage a Legacy corridor campus, a Granite Park office tower, a retail center in Legacy West, or a Plano ISD facility — we'll assess your waterproofing needs and provide a detailed scope of work.