A vapour control layer provides a method of meeting the mandatory requirements for the control of condensation, set out in BS 5250 Code of Practice for control of condensation in buildings. It can significantly contribute to the control of air leakage, an important facot under the Building Regulations document Part L (England & Wales) and the SBSA guidelines (Scotland). Sika Limited provide a range of Sarnafil vapour control layers, selected to suit a wide range of applications.

Sarnavap 1000E

Sarnavap 1000E is a 0.20mm thick polyethylene based vapour control layer, with a moisture vapour transmission rate of 800 MNs/g. Manufactured from special types of polyethylene, blended to produce a vapour control layer that is flexible when cold, resistant to chemicals and ageing and rot proof. Sarnavap 1000E is suitable for use in most mechanically fastened systems.


Product Data Sheets

Sarnavap 1000E

Sarnavap Tape F


Declaration Of Performance

Sarnavap 1000E

Sarnavap 1000E 1097

Sarnavap 500E

Sarnavap 500E is a 0.15mm thick polyethylene based vapour control layer, with a moisture vapour transmission rate of 450 MNs/g. Sarnavap 500E is suitable for use in most mechanically fastened systems.


Product Data Sheets

Sarnavap 500E

Sarnavap Tape F


Declaration Of Performance

Sarnavap 500E

Sarnavap 500E 1097

Sarnavap 2000E

Sarnavap 2000E is a 0.225mm thick high performance polyethylene based vapour control layer, with a moisture vapour transmission rate of 1500 MNs/g. Suitable for use in high internal humidity environments (when used in a loose laid system only), SarnaVert green roofing systems, loose laid ballasted warm roofing systems and all mechanically fastened systems.


Product Data Sheets

Sarnavap 2000E

Sarnavap Tape F


Declaration Of Performance

Sarnavap 2000E

Sarnavap 5000E SA

Sarnavap 5000E SA is a 0.60mm thick multi-layer self-adhesive vapour control layer, made of polymer modified bitumen with a glass-fibre mat reinforcement and an aluminium foil top layer. The laminated aluminium foil ensures a high moisture vapour resistance of >9000 MNs/g and a moisture vapour transmission rate of <0.04 g/m²/24hr, including green roofs and high humidity buildings, e.g swimming pools.


Product Data Sheets

Sarnavap 5000E SA

Primer 600


Declaration Of Performance

Sarnavap 5000E