Water Seepage from External Wall
in Malaysia: Who is Responsible & How to Fix It

This guide is general information only and is not legal advice. Consult a Malaysian advocate & solicitor for advice specific to your situation. WhatsApp ClickBina for an external wall waterproofing assessment.

What counts as the external wall?

For the purposes of water seepage responsibility, the “external wall” is the outer face of the building structure — the perimeter walls, parapet walls, roof parapets, window reveals and the external facade treatment (render, paint, cladding). This is distinct from:

• Inter-floor leakage (water coming from the unit above through the ceiling slab) — a different issue governed by the unit above and inter-parcel rules.
• Internal wall dampness arising from condensation or internal plumbing — generally the owner’s own responsibility.
• Party walls (shared boundary walls between two landed properties) — shared responsibility in most cases.

External-wall seepage typically presents as damp patches on interior walls, paint bubbling or peeling, mould along the wall base, or visible cracks with water staining on the facade.

Strata vs landed property: the rules are different

The key threshold question is: what type of property do you live in?

The distinction matters enormously: in a strata building, you have a statutory right to demand that the JMB or MC repairs the external wall. In a landed property, you generally have to repair the wall yourself unless a neighbour’s acts are causing or contributing to the seepage.

SMA 2013 and common property duty

The Strata Management Act 2013 (Act 757) is the principal legislation governing stratified developments in Peninsular Malaysia. Under SMA 2013 and its accompanying Strata Management (Maintenance and Management) Regulations 2015 (SMR 2015):

• Common property is defined in SMA 2013 to include the external walls, facade, roof, structure, lifts, common areas and shared mechanical and electrical systems. The external walls of a strata building are definitively common property, not the parcel owner’s.
• The management body (Joint Management Body (JMB) before strata title, or Management Corporation (MC) after) is obliged under SMA 2013 s.21 and SMR 2015 to maintain, repair and keep common property in good condition.
• Specific seepage procedure: SMR 2015 sets out timelines and procedures for inter-floor leakage and common-property defect complaints. The management body is required to inspect within a prescribed time, communicate findings, and commence repairs.

JMB/MC responsibility for external wall seepage in strata

If you are in a condo or apartment and water is seeping through the external wall into your unit, the JMB or MC is responsible for:

1. Inspecting the external wall and identifying the source of seepage.
2. Engaging a waterproofing or building repair contractor to rectify the defect.
3. Funding the repair from the maintenance fund (or sinking fund for larger structural repairs).

The parcel owner is responsible for repairs to the interior of their own unit — replastering, repainting and replacing damaged finishes — but only after the management body has fixed the source of the seepage on the external wall.

It is important to document the seepage thoroughly: photograph the damp patches, note the dates of occurrence and any correlation with rainfall, and keep a record of all written communication with management. This documentation is critical if the matter escalates to the Strata Management Tribunal.

Landed property: who is responsible?

For landed individual-title properties, the responsibility for external wall seepage depends on the specific facts:

For boundary-wall disputes, see our guide on boundary wall disputes in Malaysia →. For damage caused by a neighbour’s renovation, see neighbour renovation damaged my unit →.

Common causes of external wall water seepage

Understanding the cause is essential before deciding on a repair approach. The most common causes in Malaysia’s tropical climate are:

• Failed or degraded external paint/render. Malaysia’s high UV, heat and heavy monsoon rainfall degrades external render and paint faster than in temperate climates. Hairline cracks in the render allow water ingress, especially during prolonged driving rain.
• Cracked or spalled concrete. Carbonation and steel corrosion in older concrete can cause concrete cover to spall, exposing the reinforcement to water. This is especially common in buildings over 20 years old.
• Failed window or door perimeter sealing. The junction between window frames and the surrounding wall is a primary entry point. Failed silicone, cracked mortar at the reveals or corroded aluminium flanges all allow water in.
• Parapet wall cracks. Parapet walls are exposed to weathering on three sides and are prone to horizontal cracking due to thermal movement. Cracked parapet walls allow water to travel down behind the external render.
• Blocked or overflowing gutters and downpipes. In attached terrace houses, a blocked gutter causes water to overflow and pond against the external wall.
• Rising damp from the ground. In older terrace houses without a damp-proof course, groundwater wicks up through the masonry and appears as seepage near the base of external walls.

Responsibility at a glance: who pays for what?

Step-by-step: escalating a seepage complaint in a strata building

1. Document the seepage. Photograph damp patches, cracks and staining with timestamps. Note dates and whether the seepage correlates with rainfall. This evidence is essential for any formal complaint.
2. Lodge a written complaint with management. Submit a formal written complaint (email or letter) to the JMB or MC specifically describing the location, extent and duration of the seepage. SMR 2015 requires management to acknowledge receipt and commence investigation within prescribed timelines.
3. Request an inspection date. Ask management in writing to provide an inspection date and to keep you informed of findings. Keep copies of all correspondence.
4. Follow up if management is non-responsive. If management does not respond within a reasonable time (typically 14–30 days for an acknowledgement, depending on severity), send a formal written reminder by registered post.
5. Escalate to the Commissioner of Buildings (COB). Under SMR 2015, parcel owners may notify the COB of the management body’s failure to maintain common property. The COB can issue directions to the management body to comply. COB offices are at state level (under the respective state KPKT/housing authority).
6. File at the Strata Management Tribunal (SMT). For claims up to RM250,000, the SMT can hear disputes about the management body’s failure to maintain common property. Filing fees are relatively low and the process does not require a lawyer. The Tribunal has authority to order repairs, award damages and direct the management body to act.

For more on the Strata Management Tribunal, see our guide on Strata Management Tribunal Malaysia →. For JMB/MC duties generally, see JMB responsibilities and duties →.

COB complaints and the Strata Management Tribunal

The Commissioner of Buildings (COB) is appointed under SMA 2013 and oversees the implementation of strata management laws in Peninsular Malaysia. Each state has a COB (typically housed within the local authority or state housing ministry). The COB can:

• Receive complaints from parcel owners about management body non-compliance.
• Issue directions to management bodies requiring them to perform their statutory duties (including repairs to common property).
• Investigate and take enforcement action against non-compliant management bodies.

The Strata Management Tribunal (SMT), established under SMA 2013, is a faster and cheaper alternative to the civil courts for strata disputes. For external wall seepage, the relevant claims are:

• An order requiring the JMB or MC to carry out specific repairs to the external wall or facade.
• Damages for the cost of internal repairs that the parcel owner had to carry out because management delayed.
• An order directing management to maintain common property in accordance with SMA 2013.

Claims at the SMT are limited to RM250,000. Filing requires a completed form and a filing fee of RM50–RM200 (varies by claim amount). Hearings are conducted at the tribunal office; legal representation is not compulsory but can be engaged.

Repair and waterproofing options for external walls

Once responsibility is established, the appropriate repair depends on the cause:

For waterproofing solutions, see our waterproofing service page → and waterproofing cost guide →.

Preventing external wall seepage recurrence

• Use quality elastomeric external paint on all facades. Standard emulsion paints degrade and crack in Malaysia’s climate within 3–5 years. Elastomeric coatings bridge hairline cracks and are far more water-resistant.
• Inspect and re-seal window perimeters every 5–7 years. Silicone degrades under UV and heat; routine re-sealing is far cheaper than a seepage repair.
• Clear gutters and downpipes annually before the monsoon season (October–November). A RM300 gutter-clearing job prevents a RM15,000 seepage repair.
• Inspect parapet walls and roof edges annually. These are the highest-risk seepage entry points on flat-roofed buildings and terrace houses.
• For strata buildings: push management to include facade maintenance in the annual budget. A building that has not had its external facade repainted or recoated for over 10 years is almost certainly developing seepage issues.

Need a waterproofing assessment or repair? WhatsApp ClickBina →

Related guides: ceiling leak repair →, waterproofing cost →, Strata Management Tribunal →.

Sources & official references

• Donovan & Ho: Dealing with Inter-Floor Leakage in Malaysia — legal analysis
• Mah Weng Kwai & Associates: Inter-Floor Leakage & Party Wall Damage
• AskLegal: Who Is Responsible When Things Get Broken in a Malaysian Apartment?
• BuildingRepair.my: From Leak to Liability — Water Ingress and Building Structure
• Strata Management Act 2013 (Act 757) — Laws of Malaysia; Strata Management (Maintenance and Management) Regulations 2015 (P.U.(A) 107/2015)