Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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After
Before
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Before
AfterTremron Home Additions & ADU: The Mountain View Owner’s Guide
Tremron hardscape pavers and retaining-wall systems used in Mountain View home additions and ADU projects typically run $45,000-$130,000 installed, depending on square footage, structural integration, and whether the Tremron product forms a patio, walkway, or load-bearing element. We stock Tremron-compatible installation materials and can assess your existing hardscape within 24 hours. Most owners discover their Tremron installation is failing when settling cracks appear between the Old Mountain View neighborhood’s clay-heavy soil and the expansion joint, or when drainage behind a retaining wall pushes coping stones out of level after winter rains.
Which Tremron Models This Applies To
Tremron’s product lines for residential construction fall into three categories we encounter regularly in Mountain View: the Autumn Blend and Sierra paver series for patios and walkways, the Stonegate retaining-wall system for grade changes and raised planters, and the Permeable line used where Mountain View’s stormwater management requirements apply near Permanente Creek drainage zones. To identify your exact product, check the chamfer edge pattern - Tremron’s beveled edge is sharper than Belgard’s and flatter than Techo-Bloc’s - and look for the manufacturing stamp on the bedding face, which includes a two-letter plant code and batch date. The OEM Tremron product is specified for color match on repairs; aftermarket equivalents from Belgard or Techo-Bloc can substitute structurally but will not blend with existing faded surfaces. In the Cuesta Park area, we’ve seen homeowners save roughly 15% using quality aftermarket base materials while keeping Tremron surface pavers for visual continuity.
Signs Your Tremron Home Additions & ADU Is Failing
- Stepping or lipping between pavers. The bedding sand has washed out or the edge restraint has failed, often where Mountain View’s compacted utility trenches settle differently than native soil. The fix is re-screeding the base and resetting the affected field, not just adding polymeric sand.
- Retaining wall leaning or bulging. Hydrostatic pressure is building behind the wall because the drainage aggregate has clogged with the fine silt common in Mountain View’s alluvial soil, or the weep holes were omitted during original construction. This worsens with each rainy season.
- Surface spalling or flaking. Tremron’s concrete pavers are rated for freeze-thaw, but de-icing salt tracked from Castro Street parking areas accelerates surface degradation. The aggregate base remains sound; only the wearing surface needs replacement.
- Joint sand washing out repeatedly. The polymeric sand bond has broken down, or the pitch is wrong and water is sheeting across rather than draining through. In Mountain View’s dry summers, this often goes unnoticed until winter concentrates the flow.
- Cracks radiating from a fixed structure. The Tremron installation was butted against a concrete foundation or stucco wall without an expansion joint. Mountain View’s diurnal temperature swing, especially near the bay, cycles the materials and pops the edge course.
Before
AfterReplacement Cost & What’s Included
| Scope | Price Range | What’s Included |
|---|---|---|
| Partial paver reset (under 200 sq ft) | $3,500-$8,500 | Remove and re-lay existing Tremron, regrade base, new bedding sand, polymeric sand |
| Full patio replacement with Tremron | $12,000-$28,000 | Excavation, class II base, new Tremron pavers, edge restraint, drainage as needed |
| Retaining wall rebuild (under 4 ft) | $8,500-$18,000 | Remove failed wall, install drainage aggregate and filter fabric, rebuild with Tremron Stonegate or approved equivalent |
| Integrated ADU hardscape (pavers + walls + steps) | $45,000-$130,000 | Full scope with written line-item quote, permit coordination, inspection scheduling |
What drives the range: access for excavation equipment, whether we hit unexpected groundwater near the Permanente Creek watershed, and whether the original installation included proper base depth - we’ve found 3-inch bases where 6 inches of compacted aggregate was specified. Under Clause 1 of the Haven Standard, your written price is delivered before any work starts. The 365-Day Done Right Promise covers settling, drainage failure, or joint degradation at no additional cost. Every project includes a documented photo record of base conditions, compaction tests, and finished grades.
DIY or Call Us?
An owner can safely check whether drainage is functioning by observing water flow during a hose test, and can measure wall lean with a 4-foot level - anything past 1 inch indicates structural compromise. What goes wrong with DIY: removing pavers without marking the pattern destroys the original layout, hand-tamping the base leaves soft spots that telegraph through in months, and rebuilding a retaining wall without geogrid or proper batter risks collapse under soil load. Tremron’s interlocking systems depend on precise edge restraint and graduated base extension; the tools to achieve this are not in a typical homeowner’s garage. We carry plate compactors, laser levels, and the specific edge restraint profiles Tremron specifies. For an assessment that includes base depth verification and a written scope, call (669) 215-4852.
FAQs
Properly installed Tremron pavers with adequate base and drainage last 25-30 years in Mountain View’s climate, though surface color fades noticeably after 10-12 years of direct south exposure. The freeze-thaw risk is minimal here; UV degradation and root intrusion from the mature oak canopy in neighborhoods like Waverly Park are the bigger threats. Call (669) 215-4852 for an exact quote on refresh versus replacement - estimates are free.
Partial rebuild is possible if the wall is under 30 inches tall, the blocks are not cracked, and the drainage aggregate behind it can be accessed without undermining the footing. We excavate the backfill, install new drain rock and perforated pipe, then rebuild the affected section with the original Tremron units. If the wall is taller, has no drainage layer, or the footing has settled, full rebuild is the only code-compliant fix. Call (669) 215-4852 for an exact quote - estimates are free.
A typical 400-square-foot patio reset takes 3-4 working days in Mountain View: one day for removal and base prep, one for compaction and screeding, one for laying and cutting, and a partial day for polymeric sand activation. Permits are not required for paver replacement unless we’re altering drainage onto a neighbor’s property or building a retaining wall over 30 inches. Call (669) 215-4852 for an exact quote - estimates are free.
We do not stock full Tremron pallets; we source directly from Tremron’s West Coast distribution or from vetted equivalents at Belgard and Techo-Bloc depending on lead time and color match requirements. For repairs, we carry sample boards to verify the existing product line, and we can typically have materials on site within 5-7 business days. Our written quote specifies the exact product, source, and delivery date before any deposit is taken. Call (669) 215-4852 for an exact quote - estimates are free.
Rowan Construction Group Mountain View is an independent contractor and is not affiliated with Tremron. We source and install Tremron-compatible products as part of our home addition and ADU services.
Measure twice, write it down, then build it that way. That’s how we’ve kept projects within a few percent of the agreed price across 4,000-plus jobs since 2007.
Written by Grant Rowan, Owner, Rowan Construction Group Mountain View at Rowan Construction Group Mountain View, serving Mountain View and nearby areas.