Sarnavap®-500 E
Sarnavap®-500 E is an unsupported vapour control layer based on Polyethylene (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.
Product Declaration
EN 13984
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.
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 |
Water Tightness
Pass | (EN 1928) |
Artificial Ageing
Pass | (EN 1296) (EN 1931) |
Reaction to Fire
Class E | (EN ISO 11925-2:2002) (EN 13501-1) |
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.