Sepa light is alternative to 1F felt, Sepa Light is Klober's non-breathable roof underlay for traditional ventilation. This is highly resistant membrane and is strong and lightweight.

Benefits

Strong lightweight alternative to traditional 1F felt
Absorbent inner layer as recommended in BS 5250
High tensile and nail tear strength

Specifications

Technical Data

Colour - Grey

Material - Polypropylene

Wind zones BS5534 2014 Annex A - Zones 1-2

Fire Rating - E

Installation

Sepa Light should be laid in accordance with BS5534
An unsupported underlay should provide a drape between rafters sufficient to ensure that water will run away from the batten fixing nail penetrations allowing draining from the eaves gutter
Contact between the membrane and the roof covering should be avoided during and after installation
Should be laid with a maximum drape of 15mm
An underlay support tray should be used at eaves to avoid ponding behind the fascia board and to provide a drip into the guttering