Lightweight waterproof building paper
Recommended for breathable wall construction
Accreditation : BS 1521 B1F

Sisalkraft 410 is a waterproof Building paper meeting the requirements of BS 1521 B1F. It is used as a temporary waterproofing/ weatherproofing layer in Building construction, as a lightweight vapour check membrane and for temporary protection and separation.

Construction

Sisalkraft 410 is a traditional waterproof building paper, with two plies of wet-strength pure kraft paper laminated together with bitumen, reinforced with glass fibre yarn.

Technical Data

Basis Weight (g/m2)	185 g
Wet Burst Strength	250 kN/m2
MVTR	5.0 g/m2/d
Vapour Resistance	41 MNs/g

Fixing/Sitework

Store rolls before use on end on a clean, dry surface protected from the weather. Material should not be unrolled if the temperature is below 5°C as the adhesive will become brittle and may crack. Depending on application, Sisalkraft 410 is laid over flat surfaces or fixed to studwork, formwork or similar. It may be stapled, nailed or fixed with self-adhesive tapes.

Sisalkraft 410 can be folded, and cut easily using a knife or scissors. Edges should be overlapped by at least 100mm, and if the installation is intended to be waterproof or water vapour-tight the seams should be welted or taped using a durable self-adhesive polymer tape.

Sisalkraft 410 is not intended as a primary weatherproofing layer and should be covered by other materials if wet or windy weather is expected.

Availability

Standard Roll Size	1250mm x 50m
Roll Weight	11.6 kg

All information given in good faith and is believed to be accurate. Technical data is based on laboratory testing and represents average values. Specific lots may vary above or below these values.