Sisalkraft 40 Breather is recommended for use as a vapour - permeable, sheathing membrane which is water - resistant and water - repellent. It is used as a weatherproofing layer behind exterior cladding to provide an extra barrier.

Key Features

Traditional materials of proven performance.

Condensation - resistant, non - slip, non - glare finish.

Heavy duty grades incorporate a reinforced, bitumen core to assist sealing around fixings.

Designed to utilise materials from renewable resources.

Quality assured UK manufacture to British standards

Moisture vapour resistance 0.26 MNs/g.

Advantages

Water - resistant.

Easy to form, fix and seal without specialised tools or materials.

Meets BS4016: 1997 Class 2.

Sisalkraft 420 is a waterproof building paper meeting the requirements of BS 1521 A1F. It is used as a waterproofing/weatherproofing layer in building construction as a vapour check membrane and for temporary protection and separation where a tough, water - resistant material is needed. Sisalkraft 420 is a traditional waterproof building paper with two plies of wet - strength pure Kraft paper laminated together with bitumen and reinforced with glass fibre yarn.

Key Features

Meets BS 1521 A1F.

Moisture vapour resistance 41 MNs/g.

Traditional materials of proven performance.

Condensation - resistant, non - slip, non - glare finish

Heavy duty grades incorporate a reinforced bitumen core to assist sealing around fixings.

Designed to utilise materials from renewable resources.

Quality assured UK manufacture to British standards.

Advantages

Easy to form, fix and seal without specialised tools or material.

Can be folded and cut easily using a knife or scissors.

Sisalkraft 728 is a polythene - coated, waterproof building paper meeting the requirements of BS 1521 A1F. It is used as a waterproofing/ weatherproofing layer in building construction, and for temporary protection and separation where a tough, water - resistant material is needed. The black, polythene surface gives excellent water resistance and low adhesion to other building materials. It can be used as a separating layer and shuttering liner in concrete work.

Key Features

Meets BS1521 A1F.

Water resistance > 24 hours.

Traditional materials of proven performance.

Condensation - resistant, non - slip, non - glare finish.

Heavy duty grades incorporate a reinforced bitumen core to assist sealing around fixings.

Designed to utilise materials from renewable resources.

Quality assured UK manufacture to British standards.

Advantages

Easy to form, fix and seal without specialised tools or materials.

Flexible but tough material.

Sisalkraft 822 is an economical, lightweight, polyethylene - coated, wet - strength Kraft paper. It is manufactured to conform to BS 1521: Class B2 for temporary uses during construction. Sisalkraft 822 is used as a temporary separation layer, bondbreak and concrete liner and for protection of walls, floors (in lighter traffic areas) and decorative finishes during construction or refurbishment. It is a laminated structure of wet strength Kraft paper to matt black polyethylene to give a waterproof, non-staining barrier.

Key Features

Meets BS1521 B2.

Water resistance > 3 hours (> water transmission rate).

Designed to utilise materials from renewable resources.

Quality assured UK manufacture to British standards.

Advantages

Lightweight.

Easy to use.

Easy to form, fix and seal without specialised tools or materials.

Roofshield is a unique, three-layer, nonwoven, spunbonded, polypropylene breather membrane with a patented melt-blown core. It is intended for use as a pitched roof underlay and is fixed beneath tiles and slates. Roofshield provides a secondary barrier to the ingress of rain, wind and snow. It has a low vapour resistance and is air-permeable; additionally, it eliminates the incidence of interstitial condensation in pitched roofs.

The combination of low vapour resistance and air-permeability eliminates the need for low and high level ventilation. It also negates the need for a vapour control layer or air barrier fixed at ceiling level. This is a basic requirement with other inferior-performing products which are air impermeable and have a significantly higher vapour resistance.

The product provides the most cost - effective solution to controlling interstitial condensation in a pitched roof. The exclusion of ventilation and a vapour control layer eliminates the additional expense of buying extra components and paying for the labour to install them.

Key Features

Water resistant.

Low vapour resistance.

Air permeable.

UV resistant.

Hydrophobically treated.

Supplied in 1m x 50m rolls.

350mm tile batten spacing.

Advantages

BBA Approved.

No vapour control layer required.

Compatible with reputable UK timber treatments.

Warm & Cold roof applications.

Eliminates low & high level ventilation.

A cost - effective solution when complying with Building Regulations.