The #1 self-adhesive waterproofing membrane
- Self-adhesive underside coating
- Bitumen-free & solvent-free
- High adhesive strength
- Ideal for steep slope or curved roof areas
EVALON® VSK
Superior Self-Adhesive Waterproofing
EVALON® VSK membranes are based on our long-term proven alwitra® roofing system. The waterproofing membrane has both a polyester fleece-backing and a synthetic adhesive compound coating. After laying, the fleece-backing also reduces stress and strain on the system (vapour decompression, movement compensation, etc.). The coating is bitumen-free and solvent-free and covered with a protective film when delivered.
25 Year Guarantee
50 Year Service Life
BREEAM Accredited
Trusted by architects, roofing contractors & developers
Downloads
Download EVALON® VSK BrochureApplications
EVALON® VSK is suitable for:
- Steep sloped roofs
- Curved roofs
- Flat roofs
- Bridging expected cracks
Advantages
- Quick & Easy Install without additional adhesives
- Time and labour saving
- Clean install
- Solvent-free self-adhesive backing
- Direct laying onto bituminous materials
- Superior adhesion without a flame
Product Details Back to top
Product Specification
All EVALON® VSK standard rolls are individually wrapped and laid horizontally on pallets of up to 15 units, for transportation.
| Properties | Measurement |
|---|---|
| Effective thickness of waterproofing layer (mm) | 1.2 / 1.5 |
|
Width (m) |
1.05 1.05 |
| Lengths (m) | 20* / 25 |
| Specified lengths | on request |
| Standard colours | white / light grey / slate grey |
| Special colours | on request |
*Only available for EVALON® VSK 1.05mm, slate grey
Technical Drawings
Technical Data
| Properties | Testing Method | Unit | EVALON® VSK Results |
|---|---|---|---|
| Visible Defects | EN 1850-2 | passed | |
| Effective Thickness (eeff)of waterproofing layer | EN 1850-2 | mm | 1.2/1.5 |
| Water tightness | EN 1928 (B) | kPa | ≥ 400 |
| External Fire Performance | ENV 1187 CEN/TS 1187 | class BROOF (t1)+(t3)+(t4) confirmed by General Building Construction Supervision Test Certificates | |
| Reaction to Fire | EN 13501-1 | class E | |
| Joint Peel Resistance | EN 12316-2 | N/50mm | ≥ 150C |
| Joint Sheer Resistance | EN 12317-2 | N/50mm | ≥ 400C |
| Max. Tensile Force | EN 12311-2 (A) | N/50mm | ≥ 500 |
| Elongation at Max. Tensile Force | EN 12311-2 (A) | % | ≥ 60 |
| Resistance to Impact Load | EN 12691 (A) | mm | ≥ 300 |
| Resitance to Static Load | EN 12730 (B) | kg | ≥ 20 |
| Tear Resistance | EN 12310-1 | N | ≥ 300 |
| Tear Resistance | EN 12310-2 | N | ≥ 150C |
| Resistance to Root Penetration | EN 13948 | passedᵈ | |
| Dimensional Stability | EN 1107-2 | % | ≥ 1 |
| Low Temperature Flexibility | EN 495-5 | °C | ≥ -30 |
| Durability (UV Exposure, High Temperatures & Water | EN1297 | Visual Control | passed |
| Durability of Water Tightness Against Artificial Aging | EN 1296 EN 1928 | kPa | ≥ 60 |
| Durability of Water Tightness Against Chemicals incl. water | EN 1847 EN 1928 | kPa | ≥ 60 |
| Hail Resistance | EN 13583 | m/s | ≥ 30 |
| Water Vapour Permeability | EN 1931 | µ | approx. 20,000 |
| Bitumen Compatibility | EN 1548 | passed |
Quality
| Certifying body | Testing |
|---|---|
| State Material Testing Institute, Darmstadt, Germany | External quality control Certificate of conformity according to DIN EN 13956 and DIN EN 13967 |
| DEKRA Certification GmbH, Stuttgart | Comprehensive external quality control of the product system |
| Society for Materials Research and Testing Institute for the Leipzig construction industry Warringtonfire Gent (Belgium) Exova Warringtonfire (United Kingdom) |
Tests with General Building Construction Supervision Test Certificate (AbP) according to DIN 4102-7 (resistance to flying sparks and radiant heat) as well as DIN CEN/TS 1187; Test methods 1, 3 and 4 (external fire load) with classification according to DIN EN 13501-5 resp. AbP Tests according to DIN 4102-1 (building material class B2) and DIN EN ISO 11925-2 with classification according to DIN EN 13501-1 (class E) |
| Environmental Product Declaration | EPD‘s for various application methods and material thicknesses according to ISO 14025 and EN 15804 corresponding to the guidelines of the Institute Construction and Environment (IBU) |
| German Institute for Building Technology (DIBt), Berlin, Germany | European technical assessment ETA-08/0112 (ETAG 006) |
| Chamber of Agriculture Rhineland, teaching and research institute for Gardening and landscaping, Essen, Germany | Testing according to FLL 84 (root penetration resistance) |
| Research institute, Field of Landscaping, Geisenheim, Germany | Testing according to FLL 99 (root / rhizome penetration resistance) |
| British Board of Agrément (BBA), Garsten/Watford, UK | Tests according to Building Standards Regulations (England, Wales and Scotland), Certificate No. 96/3293 |
| Scientific and Technical Center for Building), Marne Valle, France | Avis Techniques CSTB 5.2/19-2641_V1, CSTB 5.2/19-2640_V1 |
| Factory Mutual / FM Global, Norwood, USA | FM-Approval, Class 4470 |
Sustainability
Alwitra was the first enterprise of the industry to introduce relevant Environmental Product Declarations of the Institute Construction and Environment (Institut Bauen und Umwelt e. V. - IBU) for the EVALON®® and EVALASTIC®® waterproofing membranes.
For certifications according to DGNB, LEED or BREEAM alwitra® provides appropriate product fact sheets.
Applications Back to top
Application Examples |
 Loose Laid with BallastGravel, roof garden, concrete paving slabs |
 Mechanically FastenedIn the seam overlap or with field fastening |
 BondedWith compatible adhesives |
 Self-AdheredWith compatible primer |
|---|---|---|---|---|
| non ventilated roofs (warm deck roofs) | No |
No |
No |
Yes |
| ventilated (two layer) roofs (cold deck roofs) | No |
No |
No |
Yes |
Substrate Quality
The substrate surface must be clean, dry and free of dust and grease.
Always prime with alwitra® Primer SK and ensure you use alwitra® Primer SK-L if applying at low temperatures as it takes less time to dry. Use at least 0.2 L / m2.
The supporting layer must be compatible with the membrane, solvent resistant, clean, dry and free of grease and dust.
Application
Installation works must be carried out only by trained alwitra® roofing contractors.
Would you like to become a dedicated alwitra® roofing contractor?
We can provide the necessary training on the installation of our products.
Case Studies Back to top
Hanham Mausoleum,
Sturminster Newton
EVALON® VSK, Standing Seam & Lead Roll Profiles
View Case StudyDocuments Back to top
EVALON® Waterproofing Membranes
Accessories Back to top
EVALON® V
Superior Single-Ply Waterproofing
Superior single ply waterproofing at its best.
- Bitumen-free & solvent-free
- UV Stable
- Root-resistant
- Fire load five times lower than that of a built-up felt roof
EVALON® VG
Superior Fire-Retarding Waterproofing
Superior Fire-Retarding Waterproofing
- Compatible with bitumen
- High thermal-mechanical resilience
- Root and rhizome-resistant
- High reflection of heat rays
EVALON® VGSK
Superior Fire-Retarding Self-Adhered Waterproofing
- Up to five times lower fire load compared to two-layer seals
- Optimal vapour pressure compensation function of the polyester fleece or glass/polyester fleece backing
- Self-adhesive underside coating
- With the integrated fire protection layer, for direct bonding on unbacked rigid EPS foam boards
