Sikaplan® G-18
Polymeric PVC membrane for mechanically fastened roof waterproofing
Sikaplan® G-18 (thickness 1,8 mm) is a polyester reinforced, multi-layer, synthetic roof waterproofing sheet based on polyvinyl chloride (PVC) containing ultraviolet light stabilisers and flame retardant according to EN 13956. It is hot air weldable and formulated for direct exposure and designed for use in all global climatic conditions.
- Resistant to UV exposure
- Resistant to permanent wind exposure
- Resistant to most common environmental influences
- Hot air weldable
- No open flame equipment required
- High water vapour permeability
Usage
Waterproofing membrane for:- Mechanically fastened roofing systems
Advantages
- Resistant to UV exposure
- Resistant to permanent wind exposure
- Resistant to most common environmental influences
- Hot air weldable
- No open flame equipment required
- High water vapour permeability
Packaging
| Packing unit | Refer to price list | Refer to price list |
| Roll length | 20,00 m | 15,00 m |
| Roll width | 1,54 m | 2,00 m |
| Roll weight | 67,70 kg | 66,00 kg |
Colour
| Surface | Matt |
| Colours | |
| Top surface | Light grey (nearest RAL 7047) |
| Bottom surface | Dark grey |
Top surface of sheet in other colours available on request, subject to minimum order quantities.
Product Details
ENVIRONMENTAL INFORMATION
- Conformity with LEED v4 SSc 5 (Option 1): Heat Island Reduction - Roof (only traffic white)
- Conformity with LEED v4 MRc 2 (Option 1): Building Product Disclosure and Optimization – Environmental Product Declarations
- Conformity with LEED v4 MRc 3 (Option 2): Building Product Disclosure and Optimization - Sourcing of Raw Materials
- IBU Environmental Product Declaration (EPD) available
APPROVALS / STANDARDS
- CE Marking and Declaration of Performance to EN 13956 - Polymeric sheets for roof waterproofing
- EN13501-5 Broof(t4) (as part of system).
- FM Approved, Certificate of Compliance, Sikaplan® G Approval Identification No. 4D3A9.AM
Product Declaration
EN 13956 - Polymeric sheets for roof waterproofing
Chemical Base
Polyvinyl chloride (PVC)
Shelf Life
5 years from date of production.
Storage Conditions
Product must be stored in dry conditions and temperatures between +5 °C and +30 °C. Store in a horizontal position. Do not stack pallets of the rolls on top of each other, or under pallets of any other materials during transport or storage. Always refer to packaging.
Visible Defects
| Pass | (EN 1850-2) |
Length
| 15 m / 20 m (-0 % / +5 %) | (EN 1848-2) |
Width
| 1,54 m / 2,00 m (-0,5 % / +1 %) | (EN 1848-2) |
Effective Thickness
| 1,8 mm (-5 % / +10 %) | (EN 1849-2) |
Straightness
| ≤ 30 mm | (EN 1848-2) |
Flatness
| ≤ 10 mm | (EN 1848-2) |
Mass per unit area
| 2,2 kg/m² (-5 % / +10 %) | (EN 1849-2) |
Compatibility
Not compatible with direct contact to other plastics, e.g. EPS, XPS, PUR, PIR or PF. Not resistant to tar, bitumen, oil and solvent containing materials. These materials could adversely affect the product properties.
Resistance to Impact
| hard substrate | ≥ 500 mm |
| soft substrate | ≥ 800 mm |
Hail Resistance
| rigid substrate | ≥ 27 m/s |
| flexible substrate | ≥ 32 m/s |
Tensile Strength
| longitudinal (md)1) | ≥ 1000 N/50 mm |
| transversal (cmd)2) | ≥ 900 N/50 mm |
1) md = machine direction
2) cmd = cross machine direction
Elongation
| longitudinal (md)1) | ≥ 15 % |
| transversal (cmd)2) | ≥ 15 % |
1) md = machine direction
2) cmd = cross machine direction
Tear Strength
| longitudinal (md)1) | ≥ 150 N |
| transversal (cmd)2) | ≥ 150 N |
1) md = machine direction
2) cmd = cross machine direction
Joint Peel Resistance
| Failure mode: C, no failure of the joint | (EN 12316-2) |
Joint Shear Resistance
| ≥ 600 N/50 mm | (EN 12317-2) |
Dimensional Stability
| longitudinal (md)1) | ≤ |0,5| % |
| transversal (cmd)2) | ≤ |0,5| % |
1) md = machine direction
2) cmd = cross machine direction
Foldability at Low Temperature
| ≤ -25 °C | (EN 495-5) |
Water Tightness
| Pass | (EN 1928) |
Effect of Liquid Chemicals, Including Water
| On request | (EN 1847) |
UV Exposure
| Pass (> 5000 h / grade 0) | (EN 1297) |
External Fire Performance
| BROOF(t4) ≤ 10° | (EN 13501-5) |
Reaction to Fire
| Class E | (EN ISO 11925-2, classification to EN 13501-1) |
Application
Ambient Air Temperature
Ambient temperature: -15 °C min. / +60 °C max.
Substrate Temperature
Substrate temperature: -25 °C min. / +60 °C max.
EQUIPMENT
Hot welding overlap seams
Electric hot air welding equipment, such as hand held manual hot air welding equipment and pressure rollers or automatic hot air welding machines with controlled hot air temperature capability of a minimum +600 °C.
Recommended type of equipment:
Manual: Leister Triac
Automatic: Leister Varimat or similar
Semi-automatic: Leister Triac Drive
SUBSTRATE QUALITY
The substrate surface must be uniform, smooth and free of any sharp protrusions or burrs, etc. Sikaplan® G-18 must be separated from any incompatible substrates / materials by an effective separation layer to prevent accelerated ageing. The supporting layer must be compatible to the membrane, solvent resistant, clean, dry and free of grease and dust. Metal sheets must be degreased with Sika® Trocal Cleaner-2000 before adhesive is applied.
APPLICATION
Installation procedure
Reference must be made to further documentation where applicable, such as project specification, application manual and installation or working instructions etc.
Fixing method – General
The waterproofing membrane is installed by loose laying (without stretching membrane or installing under tension) with mechanical fastening in seam overlaps or independent from overlaps. Overlap seams are hot welded using specialised hot air equipment.
Fixing method-Spot fastening
Sikaplan® G-18 must always be installed at right angles to the deck direction. Sikaplan® G-18 is fixed by fasteners and washers/tubes along the marked line, 10 mm from the edge of the membrane. Sikaplan® G-18 is overlapped by 100 mm. The spacing of the fasteners is in accordance with the project specific Sika calculations. At upstands and at all penetrations, the membrane must be secured by additional fasteners and washers/tubes. The fasteners and washers/tubes protect the Sikaplan® G-18 roof covering against tearing and peeling off by wind uplift.
Hot welding method
Overlap seams must be welded by electric hot welding equipment. Welding parameters including temperature, machine speed, air flow, pressure and machine settings must be evaluated, adapted and checked on site according to the type of equipment and the climatic conditions prior to welding.
Testing overlap seams
The seams must be mechanically tested with screw driver to ensure the integrity/completion of the weld. Any imperfections must be rectified by hot air welding.