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Sisalkraft Building Papers - Sisalkraft 728

Insulation Products: Insulation Products for Floors > Accessories for Flooring Insulation Products

Product Code: 62015

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Sisalkraft 728.pdf

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Sisalkraft 728.pdf

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Product Description:

Product Description:

Sisalkraft 728 is a heavy duty DPM building paper
Accreditation : BS1521 A1F

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- can be used as a separating layer and shuttering liner in concrete work.


Sisalkraft 728 is a polythene coated waterproof building paper with two plies of kraft paper laminated together with bitumen reinforced with glass fibre yarn and coated on one face with black polyethylene.


Sisalkraft 728 is a flexible. tough material with one face of unbleached brown paper the other face coated with black polythene and reinforced with a regular grid pattern woven reinforcing.

Technical Data

Basis Weight g/m2

327 g

Tensile Strength
16.5 kN/m

9.0 kN/m


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 728 is laid over flat surfaces or fixed to studwork formwork or similar. It may be stapled nailed or fixed with self-adhesive tapes. Use the membrane with the black coated side exposed for improved water resistance or from release from concrete in shuttering lining.

Sisalkraft 728 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.

Sisalkraft 728 is not intended as a primary weatherproofing layer and should be covered by other materials if wet or windy weather is expected.


Standard Roll Size
1000mm x 25m

Roll Weight
8 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.

Click on the Sub Code for more details.

Sub Code
25000 mm
1000 mm
25m x 1000mm Roll

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