Premium Performance. Built for Every Roof.

Oskorp Platina
Self-Adhesive

The Platina Underlayment sets the gold standard for weatherproofing. Engineered for long-term durability, airtight sealing, and effortless installation, Platina delivers professional-grade protection—whether you’re building new or renovating an existing roof.

Its self-adhesive backing makes installation faster, cleaner, and more reliable, while its robust 3-layer construction ensures long-term stability under extreme conditions.

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1 The Oskorp Platina
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2 Showcasing the different roof types the Platina supports.

Key Features

☀️ Superior Weather Resistance

Defends against rain, wind, snow, and UV exposure—delivering all-season protection that holds up in the harshest climates.

🧱 Exceptional Tear Strength & Handling

Tough, jobsite-tested construction that resists tearing—yet flexible enough for easy positioning and installation.

🔥 Temperature Resistance Up to 250°F

Platina performs in high-heat environments (e.g. under metal roofs or solar installs), handling up to 250°F without compromising its integrity.

🧲 Renovation-Ready

Can be installed directly over an existing underlayment in renovation projects—saving time, reducing tear-off waste, and simplifying upgrades. (Note: this may affect vapor permeability/perms—contact us for project-specific guidance.)

🔄 Self-Adhesive Simplicity

No mechanical fastening required. Just peel, place, and press—creating a strong bond and excellent airtight seal.

🌿 Sustainable by Design

Reduces jobsite waste, improves energy efficiency, and contributes to more sustainable, airtight roofing assemblies.

🧩 System-Compatible

Designed to work seamlessly with the ONE 4 ALL Tape for a complete roofing system performance.

📐 Technical Specifications

Property

Standard

Value

Construction

 -

3-layer with self-adhesive bottom

Weight

 -

210 g/m² base + 100 g/m² adhesive (≈ 0.63 lb/yd²)

Roll Size

 -

4.9 ft × 102 ft (500 sq ft coverage)

UV Resistance

 -

Up to 6 months (roof) / 9 months (façade)

Temperature Resistance

 -

-30°F to +250°F (-34°C to +120°C)

Florida product Approval, N°

 -

41789.1

Tear resistance, lbf

ASTM D4073

MD: 63, XMD: 58

Low temperature flexibility

ASTM D1970

No cracking at -20°F

Tensile strength, lbf/in

AC188 / AC48

MD: 39, XMD: 35

Water vapor transmission,
g/m2-24 hrs.

ASTM E96, Procedure B

86

Sealability around nails

ASTM D1970

No leakage

Ultraviolet Exposure (UVE)

AC 188 / AC48, 210 hours

No visible damage or delamination

Accelerated Aging (AA)

AC 188 / AC48, 25 cycles

No visible damage or delamination

 

Applications

  • Pitched roof systems (tile, shingle, metal)
  • Renovation over aged underlayments
  • Solar/PV roof prep (high-temp resistance)
  • Air- and watertight roofing layers
  • Facade sealing (in vertical use cases)