Sarnavap®-500 E
Sarnavap®-500 E is an unsupported vapour control layer based on Polyethylen (PE).
- Ease and speed of installation.
- Stays flexible at low temperatures.
- Non-decaying.
- Constant vapour diffusion resistance.
- Recyclable.
Usage
- Vapour control layer (VCL) is applied over most common substrates. Substrates should be smooth, dry and strong enough to support foot traffic.
- If the substrate surface is rough (e.g. row concrete or sloped topping), install a levelling layer beneath Sarnavap®-500 E or use foam-backed Sarnavap®-3000 M.
- Sarnavap®-500 E vapour control layer is used for flat roofs (only for PVC roof systems)
Advantages
- Ease and speed of installation.
- Stays flexible at low temperatures.
- Non-decaying.
- Constant vapour diffusion resistance.
- Recyclable.
Packaging
| Packing unit: | see price list |
| Roll length: | 25.00 m |
| Roll width: | 5.00 m |
| Roll weight: | 18.125 kg |
Colour
| Surface: | smooth, PE-LD foil with Sarnavap® printed on it |
| Colour: | white |
Product Details
APPROVALS / STANDARDS
- CE marking according EN 13984.
- Reaction to fire according to EN 13 501-1.
- Quality management system EN ISO 9001/14001.
Chemical Base
Low density polyethylene (PE-LD) foil.
Shelf Life
5 years from date of production and according to defined storage conditions in unopened, undamaged, original packaging.
Storage Conditions
Rolls must be stored between +5 °C and +30 °C in a horizontal position on pallet, protected from direct sunlight, rain and snow. Do not stack pallets of rolls or any other material during transport or storage.
Product Declaration
EN 13984
Visible Defects
| Pass | (EN 1850-2) |
Length
| 25.00 m (± 2 %) | (EN 1848-2) |
Width
| 5.00 m (± 1 %) | (EN 1848-2) |
Effective Thickness
| 0.15 mm (± 20 %) | (EN 1849-2) |
Straightness
| Pass | (EN 1848-2) |
Mass per unit area
| 145 g/m² (± 15 %) | (EN 1849-2) |
System Structure
Ancillary, complementary products:
- Sarnavap® Tape F (for sealing overlap airtight)
- Sarnatape®-20 (for sealing flashing airtight, porous substrates must first be treated with Primer-130)
- Primer-130
Compatibility
Not applicable for permanent exposure to UV irradiation.
Resistance to Impact
| ≤ 100 mm | (EN 12691) |
Tensile Strength
| longitudinal | ≥ 130 N/50 mm |
| transversal | ≥ 130 N/50 mm |
Elongation
| longitudinal | ≥ 400 % |
| transversal | ≥ 400 % |
Tear Strength
| longitudinal | ≥ 60 N |
| transversal | ≥ 60 N |
Reaction to Fire
| Class E | (EN ISO 11925-2:2002) (EN 13501-1) |
Artificial Ageing
| Pass | (EN 1296) (EN 1931) |
Water Tightness
| Pass | (EN 1928) |
Application
Ambient Air Temperature
Ambient temperature: -20 °C min. / +60 °C max.
Substrate Temperature
Substrate temperature: -30 °C min. / +60 °C max.
SUBSTRATE QUALITY
Substrates should be smooth, dry and strong enough to support foot traffic.
SUBSTRATE PREPARATION
In case of rough substrate surface (e.g. raw concrete or sloped topping) install a levelling layer beneath Sarnavap®-500 E.
APPLICATION
- Unroll the Sarnavap®-500 E over the structural deck and temporarily weight in position.
- Unroll the next roll of Sarnavap®-500 E positioning so as to ensure a minimum 80 mm overlap.
- Fold back the top sheet of Sarnavap®-500 E and apply Sarnavap® Tape F (jointing tape) to the bottom sheet.
- Peel off release tape and carefully fold back the top sheet of Sarnavap®-500 E ensuring no wrinkles or creases are formed.
- Apply pressure to the top sheet of Sarnavap®-500 E with a welding roller ensuring good adhesion to the Sarnavap® Tape F. On metal decks the lap should be fully supported in order to apply the correct bonding pressure.
- At transverse joints an airtight bond is achieved by trimming the edge of the upper sheet at 45°.
- At perimeters and penetrations seal the Sarnavap®-500 E by turning up and sealing to a suitable smooth surfaced abutment with Sarnatape®-20. For sealing flashing airtight, porous substrates must first be treated with Primer-130.
Installation works shall be performed only by Sika instructed contractors for roofing.
Installation of some ancillary products, e.g. contact tapes and Primer is limited to temperatures above +5 °C. Please refer to the respective Product Data Sheets.
Special measures may be compulsory for installation below +5 °C ambient temperature due to safety requirements in accordance with national regulations.