Techo-Bloc Home Additions & ADU Nationwide

Techo-Bloc Home Additions & ADU: The Pomona Owner’s Guide

Rowan Construction Group Pomona installs Techo-Bloc hardscape elements as integrated components of home additions and ADU projects, with typical installed pricing for addition work running $45,000-$130,000 and ADU construction at $90,000-$220,000 depending on scope and paver integration. We stock Techo-Bloc’s most specified lines and can source same-day from regional distribution for anything we don’t carry. Most Pomona owners discover their hardscape needs attention when settling cracks appear in patio-to-slab transitions, when permeable paver joints clog with decomposed granite from our local Santa Ana wind patterns, or when a previous installer used the wrong base course for Techo-Bloc’s thinner porcelain pavers and the surface flexes underfoot.

Call (626) 606-1081

Which Techo-Bloc Models This Applies To

Techo-Bloc’s residential hardscape lines divide into three categories relevant to home additions and ADU projects in Pomona: the thick-profile concrete pavers (Blu 80, Eva, Inca), the thinner porcelain pavers (Trek, Skyra, Infinito), and the retaining wall systems (Mini-Creta, Raffinato, York) used for grade changes and planter integration. The model number is stamped on the pallet tag and sometimes etched on the paver’s edge; for walls, check the rear cavity for the production date and series code.

The OEM-versus-aftermarket question matters differently here than with mechanical parts. Techo-Bloc does not sell “replacement pavers” to match weathered installations, so color-matching requires sourcing from current production lots or, more reliably, pulling from our own stock of discontinued colors we’ve held for Pomona repair work. For base materials and edge restraints, we use Techo-Bloc’s specified bedding sand and rigid edge profiles where the original design demands it, but we’ve also had consistent results with equivalent ICPI-compliant materials when the specification allows. The gotcha: Trek and Skyra porcelain pavers require a minimum 1-inch bedding layer over a concrete slab or compacted base, and many Pomona ADU patios we assess were installed with standard 3/4-inch bedding, which telegraphs every substrate imperfection through the thin porcelain within two seasons.

Signs Your Techo-Bloc Home Additions & ADU Is Failing

• Stepping or rocking underfoot on patio surfaces. The bedding layer has washed out or the base was inadequately compacted during original installation. In Pomona’s clay-heavy soils near the 71 and 60 corridors, seasonal expansion and contraction accelerate this if the geotextile fabric was omitted or punctured.
• White efflorescence blooming across paver faces. Calcium hydroxide is migrating to the surface, common in new concrete pavers but persistent efflorescence after two years indicates poor drainage or a base saturated by sprinkler overspray against the addition’s foundation.
• Retaining wall leaning or stair-step cracking. The drainage aggregate behind the wall is clogged, or the original installer used native soil backfill instead of clean 3/4-inch crushed stone. Our crews find this on roughly one in three Pomona wall assessments, especially on sloped lots north of the 10.
• Permeable paver surfaces ponding instead of draining. Joint aggregate has compacted into mud or the underlying stone reservoir has migrated into surrounding soil. The Santa Ana winds carry enough fine dust that permeable systems in Pomona need joint replenishment every 18-24 months, not the 5-year interval some owners expect.
• Chipped or spalled edges on driveway-rated pavers used in foot-traffic applications. This is usually a specification error from the original design, not material failure. Techo-Bloc’s Blu 60 is rated for residential vehicular load; if an addition project used it for a patio, the pavers are overbuilt and the issue is aesthetic. If vehicular pavers were specified but pedestrian-grade installed, the failure is structural and the replacement scope grows.

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Replacement Cost & What’s Included

Hardscape repair and replacement within a larger addition or ADU project is priced as line-item scope, not mystery margin. For Pomona work, isolated paver reset or replacement runs $8-$18 per square foot for labor plus materials, while full patio or walkway demolition and reinstall with proper base preparation lands at $14-$28 per square foot. Retaining wall rebuilds start around $45 per face-foot for Mini-Creta-height walls and climb with engineering requirements.

What drives the range: access for mini-excavator or hand demolition, whether we can salvage existing pavers for color match, and how far the substrate failure extends beyond the visible damage. Under Clause 1 of The Haven Standard, the written price includes all base preparation, bedding, joint sand or compound, edge restraint, and disposal. No change proceeds without a signed change order, which means if we open the patio and find the ADU’s foundation drain was tied into the hardscape bed, the additional scope is priced and approved before we continue. Every visit includes a documented photo record as standard, not an upgrade.

DIY or Call Us?

An owner can safely assess what’s visible: measure the affected area, photograph the paver stamp or wall cavity code, and check whether the surface drains within 30 minutes of a hose test. What goes wrong fast is anything involving compaction, base course, or structural wall repair. A plate compactor in untrained hands over-compacts clay soils into a hardpan that holds water; a retaining wall rebuilt without proper drainage aggregate collapses under seasonal load; and cutting pavers with a wet saw without silica dust control is a genuine respiratory hazard.

We’re not affiliated with Techo-Bloc, but we’ve installed their products since 2009 and stock current lines plus held inventory for color-matching discontinued lots. If you’re weighing whether the repair is worth the scope, call (626) 606-1081 and we’ll review photos at no charge. Measure twice, then we can talk.

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