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Sisalkraft 420 is a waterproof thick gauge building paper, laminated with a bitumen core. 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.
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 420 is laid over flat surfaces or fixed to studwork, formwork or similar. It may be stapled, nailed or fixed with self-adhesive tapes.
Sisalkraft 420 can be folded, and cut easily using a knife or scissors. The bitumen adhesive will tend to seal around nails or other fixings to maintain a water and water vapour tight construction. 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.
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Manufacturer No Country of Origin Pack Size 25m Roll Product Information No