PolyShield Cool Roof
A white roof is only strong if the system underneath it is right.
For larger commercial roofs, we combine reflection with waterproofing, substrate control, primer, detail reinforcement and a UV-resistant 2K polyurea membrane.
Cool Roof for commercial real estate
Lower sun absorption and a controllable renovation structure.
A light, reflective roof surface generally remains cooler under sun exposure than a dark roof. This can limit the heat flow through the roof, but the actual effect varies per building and usage situation.
That is why we do not sell a fixed savings percentage. We assess roof condition, insulation, slope, details, contamination risk and desired remaining useful life before a system direction is determined.
Existing stable roof structureSurface-specific primerDetail enhancement where necessaryWhite UV-resistant 2K membrane
Four checkpoints
The white layer is the visible result. Preparation determines reliability.
- 01Inspect and cleanRecord stability, moisture, adhesion, slope and critical details.
- 02Select primerMatch to bitumen, concrete, metal or an existing coating.
- 03Enhance detailsTreat transitions, bilges, seams, drains and penetrations in a targeted manner.
- 04Apply 2K membraneWhite waterproofing in controlled layers, with registration of consumption and conditions.
Objective comparison
Not “which coating is better?”, but which complete system suits this roof?
Features vary by manufacturer and system variant. The comparison below helps with the first selection; official documentation remains leading.
Selection criterionCold applied 2K polyureaSilicone roof coatingOther white PU/acrylate systems
System formationTwo components; reaction and layer build-up are planned in advance.Often one component and moisture curing; check product specification.One- or two-component; major differences per product family.
SubstratePrimer and preparation project specific; Widely applicable within documented structures.Primer requirements vary per substrate and system; never skip generic.Demonstrate compatibility and adhesion per existing roof layer.
Mechanical loadInteresting where high mechanical resistance and walkability are part of the selection.Often elastic, but comparing mechanical and walkable performance project-specifically.From light reflective layer to robust membrane; documentation sets the boundary.
Standing waterOnly claim for a demonstrably suitable system variant and detailing.Many specialized silicone systems are designed for this; check evidence per product.Not automatically suitable; slope and product documentation remain decisive.
ReflectionWhite documented variant can combine high initial SR/SRI values with waterproofing.White variants can have strong reflectance values; outdated values are preferred.Highly dependent on binder, pigment, contamination and maintenance.
Selection reasonComplete, mechanically robust renovation route with targeted primer and details.Suitable when silicone technology demonstrably matches the roof, details and maintenance.Suitable for specific budget, emission, processing or maintenance requirements.
PolyShield will not call a competing system defective without project-specific evidence. We make the selection criteria, substantiation and application limits visible.
Technical substantiation
Reflection claims that remain verifiable.
Solar reflectance
The proportion of incident solar radiation that the surface reflects. For the white reference variant, the current TDS mentions an initial SR of 84%.
Thermal emission
The ability to emit absorbed heat as infrared radiation. The TDS mentions 0.90 for white.
Solar Reflectance Index
Combined index for reflection and emission. The TDS lists an initial SRI of 106 for white and links this to LEED v4.1 Heat Island Reduction.
Documented lifespan class
The reference structure is classified in W3 according to ETA 24/1247, with an estimated useful life of 25 years within the described system structure and conditions.
PolyShield performs this
White waterproofing and Cool Roof renovation
Combine waterproofing with a light, sun-reflecting roof surface that can limit the heat load.
- 01Inspect roof structure, moisture and details
- 02Cleaning and repairing weak areas
- 03Apply primer and detail reinforcement
- 04Waterproof membrane delivered in a controlled manner
From damage picture to solution
Problem, cause and effect first visible.
A dark or outdated commercial roof combines waterproofing risk with strong heating due to solar radiation.
- UV and weather loads
- Movement of seams and connections
- Overdue maintenance or previous emergency repairs
In addition to leakage risk, a high roof temperature can contribute to comfort problems and cooling load; the actual effect remains building-specific.
Substrate inspection, primer, detail reinforcement and a white UV-resistant membrane layer as a complete structure.
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
Create an inspectable and locally recoverable system route.
RISK OF DELAY
Waiting can increase waterproofing defects and leaves a logical combined maintenance and reflection moment unused.
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 →Interactieve offertecheck
Is uw dak klaar voor een Cool Roof-screening?
Deze checklist is een intakehulpmiddel, geen technisch advies. Vink alleen aan wat u werkelijk weet; onbekende punten worden onderdeel van de inspectie.
0/6 punten bekendBegin met een dakopnameDefinitieve geschiktheid volgt pas na ondergrond-, vocht- en detailcontrole.
Work done
From outdated roof to white waterproofing.
From orientation to project data
Measure the roof, add photos and receive a technical pre-selection.
With Roof Intelligence you transfer address, roof surfaces, risks, details and photos to one project file. You do not have to re-enter information when requesting a quote.
01Roof measurement in the Netherlands & BelgiumDraw one or more roof surfaces and calculate the indicative surface area.02ROBBERY INTELLIGENCECombine measurement, photo file, markings and technical pre-selection.03Technische systeemvergelijkingVergelijk complete 2K-polyurea met siliconen en andere witte systemen.
Frequently asked questions
Choose business without marketing noise.
Is every white roof automatically a Cool Roof?+
No. A white color alone does not say enough. Reflection, emission, aging, contamination and the quality of the entire waterproofing structure determine the performance.
Is 2K polyurea always better than silicone?+
No. Both technologies have suitable applications. We choose 2K polyurea when the surface, mechanical load, detailing and desired system control suit it.
Can the system use bitumen?+
This can be done on technically suitable, stable and sufficiently dry bituminous membranes, with appropriate preparation and primer. Trial adhesion and moisture assessment may be required.
Does a white roof lower the indoor temperature?+
A reflective surface can limit solar heat to the roof. The effect indoors partly depends on insulation, ventilation, installations, building use and weather conditions.
VóórNa
Eigen projectbewijs
PS / TRANSFORMATION 01 · Vlaardingen · Circa 500 m²Van warmteabsorberend bitumen naar een licht dakvlak.
Bekijk op een eigen bedrijfsdak hoe de overgang naar een wit 2K-systeem het dakbeeld en de warmtelast-richting verandert.
- Ondergrond
- Verouderd bitumen
- Resultaat
- Een doorlopend licht dakoppervlak dat minder zonnewarmte absorbeert dan het oorspronkelijke donkere bitumen.
NEXT STEP
Have your commercial roof technically pre-selected.
We prefer to discuss by telephone what you already know and what project information is still missing.