Green roofs
Waterproofing for green roofs and planters
Hidden waterproofing structure under greenery and soil packages, where root resistance, detailing and inspectability must be demonstrable.
Additional validationCovered, root loaded
Deze pagina beschrijft de techniek. Concrete dakuitvoering en aanvragen staan op PolyShield Dakcoating.
PolyShield performs this
Waterproofing for green roofs and planters
Waterproofing for green roofs and planters as a complete waterproofing route for green roofs and large planters.
- Inspect roof structure, moisture and details
- Cleaning and repairing weak areas
- Apply primer and detail reinforcement
- Waterproof membrane delivered in a controlled manner
From damage picture to solution
Problem, cause and effect first visible.
- UV and weather loads
- Movement of seams and connections
- Overdue maintenance or previous emergency repairs
Moisture can damage insulation, interior, installations and business processes.
Een renovatie afgestemd op het gebouw van ondergrond, details, primer en doorlopend membraan.
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 →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.
- 01Substrate
With slope and stable details
- 02Primer
Attachment
- 03Root resistant membrane
Waterproofing according to approved variant
- 04Protective and drainage layer
Mechanical protection and drainage
- 05Green package
Substrate and planting
System profile
What this direction is rated for.
- Green roofs
- Large planters
- Landscaped roofs
- Seamless geometry
- Detail-oriented
- Hidden membrane
- Root resistant variants available
- Concrete
- Bitumen
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.
Other building parts only after additional validation.
- Wet or unstable surface
- Unknown layers without test adhesion
- Structural defect without repair
- Undocumented product combination
Beoordeling in de praktijk
Wanneer groendaken kansrijk is
Hidden waterproofing structure under greenery and soil packages, where root resistance, detailing and inspectability must be demonstrable.
Wanneer dit meestal past
Green roofs
De ondergrond en detaillering moeten deze systeemroute aantoonbaar toelaten.
Large planters
De ondergrond en detaillering moeten deze systeemroute aantoonbaar toelaten.
Landscaped roofs
De ondergrond en detaillering moeten deze systeemroute aantoonbaar toelaten.
Wat we eerst willen weten
- Root load
- Dispose of
- Emergency overflows
- Protective layers
- Future accessibility
Wanneer we een andere aanpak adviseren
Alleen met aantoonbare wortelweerstand Membraan vóór afdekking volledig controleren Geen scherpe belasting op membraan
01 / Inspect
We want to know this first.
- Root load
- Dispose of
- Emergency overflows
- Protective layers
- Future accessibility
02 / Limit
When we don't execute immediately.
- Only with demonstrable root resistance
- Completely check the membrane before covering
- No sharp load on membrane
03 / Substantiate
Which must be demonstrable.
- Root resistance per system variant
- Delivery check before covering
- Drainage design
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.
ETA/EAD
An ETA applies to the described system kit and its intended use. Document number and current system variant are checked before publication.
CE and declaration of performance
CE and DoP describe declared product performance; they are not a blanket endorsement of every roofing project.
BROOF classification
Only claimable for the exact tested roof structure, substrate, layer thickness and the stated test suffix, for example BROOF(t1).
Waterproofing
Test performance and application conditions must correspond to the selected membrane variant and project structure.
Crack bridging and movement
Class, temperature and layer thickness are taken from the current technical documentation.
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.
Material, condition, moisture, adhesion and existing layers.
Edges, bilges, drains, penetrations, seams and connections.
Water, UV, movement, traffic, use and operating conditions.
Accessibility, phasing, safety, planning and weather window.
Root-resistant system variant
Waterproof before the roof disappears from view.
With a green roof, the membrane must not only retain water. The chosen 2K variant must be demonstrably resistant to root penetration and must be fully checked before applying protection, drainage and substrate.
- 01Background and details
Repair and record slopes, drains, upstands, seams and penetrations in advance.
- 02Root-resistant membrane
Only use a variant for which the root resistance for the intended structure is demonstrable.
- 03Check before covering
Check layer structure, details and any repair points as long as the membrane is still accessible.
- 04Protection and drainage
Implement mechanical protection, water drainage and green package as one coordinated roof structure.
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.
Related expertise
From waterproofing system to application, evidence and project route.
These next steps are linked to application, substrate, risk and decision phase. This way you navigate from general information to technology, evidence and a useful project route.
Knowledge
Why use primer for roof coating?
Primer selection depends on the surface, preparation, moisture and adhesion route.
View this route →TechnologyPremium cold applied 2K polyurea
Complete quick waterproofing route with primer, details and UV resistant membrane.
View this route →TechnologyCentrale gids polyurea dakrenovatie
Van dakonderzoek en systeemopbouw tot vergelijking, grenzen, projectinformatie en zakelijke vervolgstap.
View this route →Application2K-polyurea dakrenovatie Amsterdam
Complete cold-applied 2K roof renovation for larger Amsterdam commercial roofs.
View this route →SolutionRenovate a commercial roof without complete demolition
Investigate conservation, local restoration and integral renovation as technical scenarios.
View this route →SolutionRenovating a bitumen roof in Rijswijk
Compare maintenance and replacement based on roof condition and usage horizon.
View this route →