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Waterproofing under tiles

Protected liquid membrane under a suitable tile structure for terraces and roof surfaces where the waterproofing is not directly exposed.

Per projectCovered
Waterdichte laagopbouw onder tegelwerk

PolyShield performs this

Waterproofing under tiles

Waterproofing under tiles as a complete waterproofing route for business terraces and roof terraces.

  1. Inspect roof structure, moisture and details
  2. Cleaning and repairing weak areas
  3. Apply primer and detail reinforcement
  4. Waterproof membrane delivered in a controlled manner

From damage picture to solution

Problem, cause and effect first visible.

Het probleem

Aged roof layers, open seams or vulnerable details allow water to enter.

Possible causes
  • UV and weather loads
  • Movement of seams and connections
  • Overdue maintenance or previous emergency repairs
Gevolg bij uitstel

Moisture can damage insulation, interior, installations and business processes.

Onze aanpak

Een renovatie afgestemd op het gebouw van ondergrond, details, primer en doorlopend membraan.

De precieze oorzaak stellen we per project vast. Deze uitleg is geen diagnose op afstand.

Business benefits

The value is not just in the new layer.

Lifespan

Maintain a technically suitable roof structure and postpone replacement.

Continuity

Organize renovation per work area around the use of the building.

Risk management

Include critical details before consequential damage occurs.

Maintenance

Een inspecteerbare en lokaal herstelbare aanpak creëren.

RISK OF DELAY

Delay can allow local defects to progress to wet insulation, larger repair zones and damage under the roof.

First have the size, cause, accessibility and desired planning assessed. We then compare repair, renovation and, where necessary, replacement without selling a standard solution in advance.

Have project assessed

Door ons uitgevoerd

Waterdichting die na uitvoering weer uit het zicht verdwijnt

Bekijk de beginsituatie, voorbereiding en het resultaat. We noemen alleen gegevens die van het project bekend zijn.

Dakterras boven slaapkamer waterdicht in Delft in DelftDelftDakterras boven slaapkamer waterdicht in Delft

Onder de tegels van een dakterras in Delft was de bitumineuze dakbedekking verouderd en lekkagegevoelig. Omdat onder het terras een slaapkamer ligt, is het vlak na verwijdering van de tegels geprimerd en afgewerkt met een hybride polyurethaan/polyurea coating van circa 2,5 kg per m².

Bekijk dit project →
Terrasdak van 60 m² waterdicht in Vinkeveen in VinkeveenVinkeveenTerrasdak van 60 m² waterdicht in Vinkeveen

Onder de verwijderde terrastegels en het zandpakket bleek de bestaande dakbedekking op meerdere plaatsen te lekken. Het circa 60 m² grote vlak boven een onderliggende ruimte is gereinigd, geprimerd, volledig gewapend met geotextiel en afgewerkt met een polyurethaancoating.

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Waterdichte laagopbouw onder tegelwerk

System construction

A complete structure, no loose coating.

De visual maakt het functionele principe inzichtelijk. Exacte producten, laagdiktes en verbruiken volgen uit ondergrondonderzoek en de projectspecificatie.

  1. 01
    Mineral substrate

    With sufficient slope and strength

  2. 02
    Primer and repair

    Adhesion and pore control

  3. 03
    Polyurea membrane

    Continuous concealed waterproofing

  4. 04
    Adhesive layer

    Broadcast or otherwise approved

  5. 05
    Tile construction

    Finish with appropriate joints and details

System profile

What this direction is rated for.

Applications
  • Business terraces
  • Roof terraces
  • Balconies within larger projects
  • Technical tiling areas
Properties
  • Seamless under tiles
  • Detail-oriented
  • Protected against direct use
  • Suitable for complex shapes
Surfaces
  • Concrete
  • Cement screed

Application boundaries

Where this system fits primarily, conditionally or non-standard.

The classification helps with the initial selection. Substrate, load, detailing and current system documentation remain decisive.

TECHNICAL CONDITIONAL

Other building parts only after additional validation.

NOT AS A STANDARD ROUTE
  • Wet or unstable surface
  • Unknown layers without test adhesion
  • Structural defect without repair
  • Undocumented product combination

Beoordeling in de praktijk

Wanneer onder tegels kansrijk is

Protected liquid membrane under a suitable tile structure for terraces and roof surfaces where the waterproofing is not directly exposed.

Wanneer dit meestal past

Business terraces

De ondergrond en detaillering moeten deze systeemroute aantoonbaar toelaten.

Roof terraces

De ondergrond en detaillering moeten deze systeemroute aantoonbaar toelaten.

Balconies within larger projects

De ondergrond en detaillering moeten deze systeemroute aantoonbaar toelaten.

Wat we eerst willen weten

  • Slope
  • Cracks
  • Door and facade connections
  • Dispose of
  • Available mounting height

Wanneer we een andere aanpak adviseren

Tegelwerk is niet de primaire waterdichting Beweging en voegen doorzetten Volledige opbouw technisch afstemmen

01 / Inspect

We want to know this first.

  • Slope
  • Cracks
  • Door and facade connections
  • Dispose of
  • Available mounting height
02 / Limit

When we don't execute immediately.

  • Tiling is not the primary waterproofing
  • Continue movement and joints
  • Technically coordinate the entire structure
03 / Substantiate

Which must be demonstrable.

  • System document for covered application
  • Compatible tile adhesive/adhesive layer
  • Detailed drawings in advance

Technical proof

Performance is system and structure specific.

The statuses below are deliberately reserved. A proof is only shown as proven after the current document, the system variant and the intended use have been checked.

To be verified on a project basis

ETA/EAD

An ETA applies to the described system kit and its intended use. Document number and current system variant are checked before publication.

To be verified on a project basis

CE and declaration of performance

CE and DoP describe declared product performance; they are not a blanket endorsement of every roofing project.

Construction-related

BROOF classification

Only claimable for the exact tested roof structure, substrate, layer thickness and the stated test suffix, for example BROOF(t1).

To be verified on a project basis

Waterproofing

Test performance and application conditions must correspond to the selected membrane variant and project structure.

To be verified on a project basis

Crack bridging and movement

Class, temperature and layer thickness are taken from the current technical documentation.

To be verified on a project basis

VOC and environmental documentation

VOC, EPD and other environmental claims are only published with a current, traceable source.

Van mogelijke oplossing naar aanbieding

Four pieces of information that really determine the quotation.

01Substrate

Material, condition, moisture, adhesion and existing layers.

02Details

Edges, bilges, drains, penetrations, seams and connections.

03Tax

Water, UV, movement, traffic, use and operating conditions.

04Execution

Accessibility, phasing, safety, planning and weather window.

Frequently asked questions

Technical clarity before application.

Is this system directly suitable for every surface mentioned?

No. The substrate must fall within the approved system scope and is checked for cohesion, moisture, contamination, movement and adhesion. The correct preparation and primer are then recorded.

Is the layer structure shown always the same?

The functions remain recognizable, but primer, reinforcement, number of layers and consumption may differ per substrate and load. The final structure is stated in the project specification.

Can the system be installed over existing waterproofing?

Only when material, mounting and condition are known and a compatible structure can be demonstrated. For unknown membranes or coatings, we first carry out identification and test adhesion.

What lifespan or warranty applies?

Technical ratings and expected useful lives are for specifically rated systems. The project guarantee also depends on the surface, scope, implementation, maintenance and written agreements.

What is the first step?

A project screening and inspection. We record construction, surface, damage picture, water load, details, accessibility and desired planning.

Past deze mogelijke oplossing bij uw constructie?

Vraag offerte of informatie aan Doe eventueel de technische check