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26 Dizengoff, Netanya
GIIProperty management in Israel

5 September 2026 · Leases and tenancies

Checking the Watertightness of Your Mamad in Israel


Checking the seal of the mamad requires a separate inspection of the concrete structure and the armored fixtures. You must hire a professional to test the door seals and the mandatory ventilation system. A visual inspection of the walls and window frames allows for the detection of rainwater infiltration or rising dampness before the lease is signed.

Technical inspection of the mamad before tenants move in

The sealing of a mamad is not limited to the absence of water leaks. There is a fundamental distinction between structural sealing, which concerns the strength of the reinforced concrete, and the sealing of the fixtures, which concerns the openings. A room can be perfectly sealed structurally but present sealing defects at the armored door, allowing air or moisture to pass through.

We recommend requesting a bedek bayit to identify door sealing defects. The professional examines the junction between the door frame and the concrete wall. If the seal is degraded, the protective function of the room is compromised. The inspection also covers the seals of the intrusion-protection door, which must ensure a hermetic closure without allowing excessive drafts.

The check must include a search for traces of moisture on the perimeter walls. We verify the absence of stains or discolorations that would indicate lateral infiltration. This step is an integral part of the procedure to verify an unoccupied apartment in Israel: the essential checkpoints for an owner. A damp wall in a mamad can signal a construction problem or a sealing defect in the surrounding building.

  • Examination of the armored door seals to detect any gap between the metal and the concrete.
  • Visual inspection of the room corners to spot salt or lime efflorescence.
  • Door closing test to ensure the locking mechanism does not create tension on the seals.
  • Search for traces of mold in the lower corners of the room.

Checking the openings and the mamad ventilation system

The windows of the mamad have specific characteristics. They must resist pressure and prevent rainwater infiltration while guaranteeing protection against debris. During the verification, we inspect the window frames to detect drafts or areas of moisture stagnation. A poorly fitted frame can lead to rapid degradation of the interior finishes.

The ventilation system is a critical point. The mamad must have ventilation ducts that comply with safety standards to allow for survival during confinement. We proceed to verify the operation of the specific air extraction system. If the system is obstructed or failing, air no longer circulates, causing immediate condensation on the metal walls and glazing.

The sealing of the ventilation ducts is as important as that of the windows. Infiltration through the ventilation duct can introduce water directly inside the secure room. To avoid this type of issue, a professional must confirm that the dampers and filters are in good condition and correctly sealed. Poor maintenance of these elements can transform a secure room into a damp and unsanitary area.

Element to check Point of vigilance Risk in case of defect
Windows Frame and seal integrity Rainwater infiltration
Ventilation ducts Clear passage and sealing Asphyxiation or infiltration from the roof
Extraction system Motor/fan operation Condensation and mold
Armored door Concrete sealing Drafts and loss of pressure

Examination of walls and structure during the bedek bayit

The bedek bayit allows one to go beyond aesthetics to examine the very structure of the mamad. We ask the professional to identify any cracks in the reinforced concrete. A crack may appear superficial, but if it penetrates the thickness of the wall, it can compromise the protective function of the room and serve as a channel for runoff water.

Detecting capillary rise is a crucial step. In older buildings, moisture can rise from the ground through the walls of the mamad. We check the condition of the interior plaster to prevent mold. Plaster that crumbles or shows bubbles is a sign of moisture trapped behind the finishing layer. This often requires wall treatment intervention before any rental.

We compare the observed condition with the original construction plans if they are available. This allows us to verify that the room was built according to safety standards and that the openings have not been modified in a non-compliant manner. Any undeclared structural modification can alter the overall sealing of the room. A non-compliant structure is a major risk for both the owner and the tenant.

Managing infiltrations from the vaad bayit and the roof

In the event of a leak in the mamad, the first question is to determine the source of the infiltration. If the water comes from the roof or the exterior walls of the building, responsibility generally lies with the homeowners association. We proceed to identify the source to know whether to contact the vaad bayit. A sealing defect on the building roof is a matter of collective management.

If the infiltration is related to common areas, the procedure is to report the problem to the vaad bayit in writing. The impact of a roof infiltration on the structural security of the mamad can be heavy. Water stagnating on the roof can infiltrate through ventilation ducts or slab junctions. To understand the mechanisms of these leaks, consult our article on Roof terrace sealing problems: responsibilities and causes.

The allocation of repair costs is strictly regulated. If the leak is due to a lack of maintenance in the common areas, the costs are the responsibility of the vaad bayit. If the problem stems from a private installation (such as a drainage pipe internal to the apartment), the costs fall to the owner. A clear distinction between these two cases avoids prolonged disputes when managing your property via our property management services.

Drafting the move-in inspection and securing via the shtar ’hov

The move-in inspection must include a precise mention of the condition of the mamad fixtures. Do not settle for noting « good condition. » Specify if the door seals are flexible, if the windows close without resistance, and if the ventilation system operates without abnormal noise. This precision protects the owner against later claims regarding pre-existing defects.

The shtar ’hov, or promissory note, is a guarantee tool used in Israel. While it is not insurance, it serves to cover material damage. We use it to secure repairs related to misuse of equipment, such as a ventilation system damaged by a tenant. The shtar ’hov is signed by the tenant and their arev (guarantor), ensuring financial protection in case of damage.

It is crucial to distinguish between normal wear and tear and damage caused by unreported moisture. If a tenant does not report a detected infiltration, they may be held responsible for the aggravation of the damage. The link between the condition of the mamad and the validity of the signed guarantees is direct: a sloppy move-in inspection makes applying the shtar ’hov very difficult in the event of a dispute over moisture.

  1. Note the seal of the door joints in the written inspection report.
  2. Verify the operation of the air extraction system in front of the tenant.
  3. Have the shtar ’hov signed by the tenant and their arev.
  4. Take macro photographs of the window frames and wall corners.

Allocation of responsibilities in case of sealing-related damage

The owner has the obligation to provide a mamad that complies with current safety standards. This includes a structurally sound room and functional ventilation systems. If a major sealing defect is discovered after the lease is signed and it was not mentioned, the owner may be forced to repair it at their own expense or reduce the rent to compensate for the room’s unavailability.

The tenant’s responsibility concerns routine maintenance. This includes cleaning ventilation filters and the proper use of the mazgan (air conditioner) if it is installed in or near the room. Misuse of the ventilation system, leading to excessive condensation, is the responsibility of the tenant. The owner is not responsible for damage caused by negligence in the maintenance of internal equipment.

In the event of sudden infiltration, the procedure for declaring it to the home insurance is immediate. The tenant must notify the owner without delay. The legal consequences of a sealing defect not mentioned during the lease signing are real: the tenant may invoke a latent defect to request contract termination or a rent reduction. A rigorous inspection before renting is the only effective protection against these risks.

Before signing a lease for an apartment containing a mamad, consider having a building inspection (bedek bayit) performed, specializing in armored fixtures. Do not rely solely on the visual appearance of the walls, as infiltrations through ventilation ducts or window frames are often invisible until mold appears.

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