Concrete Repair in Cheras

01 / Overview

Concrete Repair for Cheras buildings.

Cheras has decades of mixed concrete stock — terrace houses, shoplots, condo car parks — and spalling concrete with exposed rebar is the most common structural-repair complaint we get from this corridor. ODSCC restores damaged concrete to original strength using polymer-modified mortars from FOSROC, SIKA and MAPEI. CIDB G5 since 1997, IRATEC certified, and we coordinate with structural engineers on load-bearing repairs.

02 / Why Cheras

Local building stock & failure patterns.

In Cheras we see two recurring concrete-repair scenarios. The older Cheras terrace and shoplot stock (Taman Bukit Cheras, Taman Connaught, Jalan Cheras shophouses) has spalling concrete on car-porch slabs, walkway soffits and balcony undersides — driven by long-running water ingress combined with carbonation of the cover concrete. By the time the rebar is visible, the carbonation front has typically gone past the rebar surface and corrosion is well underway. The 1990s and 2000s Cheras condo stock around Cheras Sentral and Leisure Mall has different damage — typically spalled soffits in basement car parks where deck waterproofing on the floor above has failed, leading to chloride-driven corrosion of the slab reinforcement. Either way, the repair is meaningless unless the upstream water source is resolved first; we always sequence the waterproofing repair before the concrete repair.

03 / Typical scope

What we deliver on site.

A typical Cheras concrete repair: damage survey including hammer sounding to map debonded cover, breakout to sound substrate, anti-corrosion primer on exposed rebar (SIKA MonoTop AC), formwork where geometry requires it, polymer-modified mortar reinstatement in lifts (FOSROC Renderoc HB40 or SIKA MonoTop-412), and a protective coating. For load-bearing column or beam repairs we work with the building consultant on the repair spec. Typical residential column: 2–4 days. Large car-park slab soffit: 1–2 weeks.

Full service overview: Concrete Repair.

04 / FAQ

Questions from Cheras clients.

• How deep does the breakout go?

  Until we reach sound substrate beyond the carbonation front and corroded rebar. For a typical spalled cover slab that is usually 25–50 mm deep including beyond the back of the bar.

• Do I need a consultant for a balcony underside repair?

  Cosmetic spalling we proceed directly. For load-bearing balconies or cantilevered slabs, we recommend a consultant review before we patch.

• Will the repair colour-match the original?

  The polymer-modified mortar finishes close to a typical cement-grey concrete. For exact match we apply a finishing coat or paint after the patch has cured.

05 / Why ODSCC

Klang Valley waterproofing since 1997.

• CIDB G5 since 1997 — eligible to quote on JMB and MC tenders directly.
• IRATEC-certified for industrial rope-access work at height.
• Authorised applicator for SIKA, FOSROC, MAPEI, BOSTIK, PENTENS and DENKA construction-chemical systems.
• Free site inspection across the Klang Valley — written technical opinion at no cost.