MB-BT-SBSSeries: Bitüra

Bitüra SBS −20 Elastomeric Membrane

High-elongation SBS membrane flexible down to −20 °C; for cold climates, moving decks and joints.

Coverage: 1,12 m²/m² (bindirme dahil)
Packaging: 10 m² roll (1 × 10 m)
Application: 0 °C / +35 °C

PDF documents are samples with a "DEMO" watermark.

Technical data

Coverage	1,12 m²/m² (bindirme dahil)
Curing	As soon as it cools
Application temperature	0 °C / +35 °C
Packaging	10 m² roll (1 × 10 m)
Colour	Black
Shelf life	12 months
Thickness	4 mm
Cold flexibility	−20 °C
Elongation at break	≥ %40 (taşıyıcıyla)

About the product

Bitüra SBS −20 keeps its flexibility at low temperatures thanks to elastomer-modified bitumen. It is preferred on roofs in Central and Eastern Anatolia, wide-span industrial decks and movement joints.

Its high elongation prevents structural movement from turning into stress cracks. Laps weld easily with a torch; it can be combined with a slate cap sheet.

Areas of use

Roofs in cold climate zones
Movement joints and active zones
Industrial flat roofs

Application steps

Sweep the deck, remove loose material and sharp edges; screed moisture must be below 4%.
Apply Astarix bitumen primer at about 0.3 kg/m² and let it dry completely.
Form fillets at upstands; pre-treat drains and penetrations with reinforcement pieces.
Torch-apply the rolls with 10 cm side laps and 15 cm end laps.
Check a 5–10 mm bitumen bleed at laps; lay the second layer offset by half a roll.
Turn the membrane at least 20 cm up the parapet and fix it with a termination bar and sealant.