Concealed Defects
Waterproofing details that become inaccessible after screeds, tiles or finishes are installed.
SPECIALIST CONTRACTOR · CYPRUS
Waterproofing
that starts before
the problem.
Specialist waterproofing execution and technical quality control for property developers and construction companies in Cyprus.
We work alongside construction teams to address critical waterproofing details during the building process — from substrate preparation to junctions, penetrations and concealed waterproofing systems.
EXECUTIONCOORDINATIONACCOUNTABILITY
ON SITE / BUILDING ENVELOPEFrom our project footage
01 / ROOF INTERFACES
02 / TERRACE JUNCTIONS
Explore the site films 01THE COST OF GETTING WATERPROOFING WRONG
The most expensive waterproofing problems often begin long before handover.
A leaking roof. A wet wall behind a bathroom. Dampness at ground-floor level.
Water ingress discovered after a building has been handed over can result in disruptive investigations, opening finished surfaces, repeated repair works and disputes over responsibility.
Identifying the source can require access to concealed construction details and coordination between multiple contractors. For developers, this can consume engineering resources and complicate the management of defects during the warranty period.
Prevention begins with correct execution, clear responsibility and documentation before the work is concealed.
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Repeated Remedial Work
Opening completed surfaces to investigate and repair moisture ingress.
Post-Handover Disputes
Complex responsibility questions when multiple construction trades are involved.
02INVOLVEMENT DURING CONSTRUCTION
Bring waterproofing expertise into the project before critical details are closed.
SemeonidisLTD provides specialist waterproofing works as part of the construction process, coordinating execution with the project team and paying particular attention to areas where waterproofing continuity is essential.
Your site team has a whole development to deliver. We take on the agreed waterproofing scope and coordinate the details directly with your engineer.
Technical Review
Review the relevant construction details, waterproofing requirements, substrate conditions and interfaces with adjacent trades.
Agree scope, access and critical interfaces.Substrate & Detail Preparation
Prepare surfaces and critical areas in accordance with the selected system requirements, including junctions, corners, penetrations and movement joints.
Check the substrate before application.Waterproofing Execution
Install the agreed waterproofing systems with attention to material compatibility, application conditions, continuity and manufacturer instructions.
Follow the selected system and sequence.Inspection & Documentation
Document key installation stages, particularly concealed details, and coordinate relevant checks with the project’s responsible engineer before subsequent works proceed.
Record the work before it is covered.
Technical checks relate to our agreed scope of work. Independent supervision or certification of other contractors’ work is not implied.
03AREAS OF EXPERTISE
Waterproofing solutions for
critical building elements.
Project conditions determine the system.
Critical interfaces determine the detail.
01 / TECHNICAL SCOPERoofs & Roof Terraces
Waterproofing systems for exposed roofs, roof terraces, upstands, parapets and associated drainage details.
Upstands · outlets · continuity
02 / TECHNICAL SCOPEBalconies & External Terraces
Waterproofing beneath external finishes, with attention to junctions, thresholds, drainage and movement joints.
Thresholds · drainage · movement
03 / TECHNICAL SCOPEFoundations & Ground-Level Structures
Moisture protection and waterproofing works involving foundations, ground-contact structures and critical wall-to-slab interfaces.
Ground contact · wall-to-slab interfaces
04 / TECHNICAL SCOPEBathrooms & Wet Areas
Waterproofing beneath finishes, including corners, wall-to-floor junctions, shower areas and service penetrations.
Corners · penetrations · continuity
05 / TECHNICAL SCOPEConstruction Joints & Penetrations
Treatment of critical interfaces, pipe penetrations, joints and changes in construction geometry using appropriate system details.
Joints · interfaces · system detailing
06 / TECHNICAL SCOPERemedial Waterproofing & Injection Systems
Investigation-led repair works, crack injection and localised waterproofing interventions where existing structures exhibit moisture ingress.
Investigation · access · targeted treatmentSite photographs show selected conditions and details from our works. They illustrate the technical scope; one system is not suitable for every application.
04QUALITY BEFORE CONCEALMENT
What gets covered
should first be checked.
Many important waterproofing details become difficult or impossible to inspect once subsequent construction layers have been installed.
Our approach emphasises coordination, visual documentation and attention to the critical stages of our own installation process.
01Substrate condition and preparation↗
02Correct system selection for the application↗
03Junctions and changes of plane↗
04Pipe and service penetrations↗
05Reinforcement and sealing details↗
06Material application requirements↗
07Layer continuity and thickness where applicable↗
08Curing and readiness for subsequent trades↗
09Photographic documentation of concealed works↗
10Coordination of agreed inspections and tests↗
A documented installation provides a clearer record of what was completed before the next construction stage began.
BEFORE THE NEXT TRADE STARTS
Agree inspection points, record accessible details and confirm readiness for the next construction stage with the responsible engineer.
05SYSTEM-BASED EXECUTION
The right system.
The right substrate.
The right application.
Reliable waterproofing depends on more than selecting a product. Substrate preparation, compatibility, installation conditions, detailing and compliance with the selected manufacturer’s technical instructions all affect the completed system.
Our work may involve cementitious waterproofing, liquid-applied systems, sealing products and injection technologies, depending on the construction requirements.
Sika waterproofing and construction materials are among the products used in our work.
01 / SUBSTRATE
Start with the condition of the structure.
Review the exposed surface, access, existing layers and interfaces before agreeing the preparation scope.
02 / APPLICATION
Work to the selected system.
Coordinate preparation, reinforcement or sealing details, application sequence and curing requirements.
03 / INJECTION
Define the purpose of the intervention.
Select the injection approach against the assessed condition and agreed objective. Record the accessible treatment locations and work stages.
06FIELD EXPERIENCE
Real sites.
Real construction details.
See the conditions. Follow the work.
Discuss the scope with our team.
FEATURED SITE FILM / 01Active water ingress.
Active water ingress.
Parking structure.
Injection works.
Watch the work where the problem is visible.
The site sequence shows active water ingress at a wall interface, preparation of injection points, injection work and local surface reinstatement.
- Construction element
- Parking structure
- Works shown
- Injection and local treatment
- Technical focus
- Access to the affected detail and treatment points
View project details
Recorded sequence: active ingress, work at injection points and local treatment of the affected wall detail.
Review with your engineer: the affected area, known construction interfaces, available access and the intended treatment scope.
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01 / PARKING INJECTION00:53
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02 / SITE FILM00:58
Opening-up & substrate preparation
Exposing construction layers and preparing access to perimeter details before subsequent works.
View project details
Opening-up, removal of local finishes and preparation around concealed interfaces.
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03 / SITE FILM00:58
Interior injection works
Preparation, drilling and injection equipment in use along internal wall and slab interfaces.
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The site film records affected surfaces, preparation and injection operations.
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04 / SITE FILM00:40
Terrace interfaces & opening-up
Exposed screed, perimeter upstands, door thresholds and local openings on an external terrace.
View project details
The site film shows substrate conditions and exposed junctions before reinstatement.
Discuss this type of work07A SPECIALIST CONSTRUCTION PARTNER
Clear scope. Technical execution.
Documented responsibility.
Direct Execution
Waterproofing works carried out by our company within an agreed scope.
Coordination with Site Engineers
Technical communication during preparation, execution and before subsequent construction stages.
Concealed Works Documentation
Photographic records of relevant installation stages and critical details.
Contractual Accountability
Responsibility for the quality of our own completed works under the agreed contract terms.
08START A TECHNICAL CONVERSATION
Let’s discuss waterproofing
before it becomes a defect.
If you have a residential or commercial development under construction, we would welcome the opportunity to review the waterproofing scope with your project engineer.
TO START THE CONVERSATION
Share the project location, construction stage, relevant drawings or photographs, and the areas you want us to review.
SemeonidisLTD
2, Vladimirou Kafkaridi,4104 Agios Athanasios, Limassol, Cyprus
PHONE / WHATSAPP+357 94 308 322
PROJECT ENQUIRIESsemeonidisltd@gmail.com