SIGA Majvest 700 SOB - Rainproof Breathable Facade Membrane - 1.5m x 33.4m roll

SIGA Majvest 700 SOB - Rainproof Breathable Facade Membrane - 1.5m x 33.4m roll
SIGA Majvest 700 SOB - Rainproof Breathable Facade Membrane - 1.5m x 33.4m roll
Guide Price
SIGA Majvest 700 SOB - Rainproof Breathable Facade Membrane - 1.5m x 33.4m roll
SIGA Majvest 700 SOB - Rainproof Breathable Facade Membrane - 1.5m x 33.4m roll
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SIGA Majvest 700 SOB - Rainproof Breathable Facade Membrane - 1.5m x 33.4m roll
Guide Price: £315.68 (£378.82 inc VAT)
Price per m2: £6.30/m2 (£7.56 inc VAT)
  • Product Code: A1-7702
  • Delivery Time: 3 - 5 days
  • Brand: SIGA
  • Model: 1.5m x 33.4m - 50.1m2
  • Weight: 13.53kg
Our ratings on 11-11-2026:
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4.8 out of 5

SIGA Majvest 700 SOB - Rainproof Breathable Facade Membrane - 1.5m x 33.4m roll

Length: 33400mm
Width: 1500mm
Thickness: 0.6mm
Roll Coverage: 50.1m2
Weight/m2: 0.27kg
Weight: 13.53kg
Fire Rating (Reaction to Fire): E

SIGA Majvest 700 SOB is a windproof, rainproof and highly breathable facade membrane with integrated self‑adhesive strips (SOB) for fast, secure and wind‑tight installation behind ventilated facades. It provides long‑term weather protection, high vapour permeability, and excellent UV stability, making it ideal for modern timber and metal facade systems. SIGA Majvest 700 SOB is a diffusion‑open facade membrane engineered for installation behind ventilated cladding. With an sd‑value of approx. 0.15m, it allows moisture to escape safely from the wall build‑up while providing reliable protection against wind, driving rain and snow.

The membrane is extremely robust, UV‑stable, and tear‑resistant, ensuring long‑term performance even in demanding exterior conditions. Majvest 700 SOB is suitable for open‑joint facades up to 20mm, making it versatile for both traditional and contemporary architectural designs. Its wind‑tight construction helps maintain the thermal efficiency of the insulation layer, while its water‑tight functional film protects the structure during construction and throughout the building’s life. SIGA Majvest 700 SOB is a durable, breathable and weather‑resistant facade membrane designed for ventilated cladding systems requiring long‑term wind‑tightness, rain protection and safe moisture management. Its robust construction and UV stability make it ideal for modern architectural facades.

CHARACTERISTICS

  • Integrated adhesive strips - fast, wind‑tight sealing of overlaps.
  • Highly breathable facade membrane - sd ≈ 0.15m for safe moisture transport.
  • Windproof and rainproof - protects insulation and structure from weather exposure.
  • UV‑stable - suitable for open joints up to 20mm.
  • Robust 3‑layer construction - durable functional film with protective layers.
  • High tear resistance - ideal for demanding exterior installations.
  • Compatible with SIGA tapes - ensures reliable detailing around penetrations and junctions.
APPLICATION
  • Ventilated facade systems
  • Open‑joint cladding up to 20mm
  • Timber‑frame exterior walls
  • Metal facade constructions
  • High‑performance insulation systems

      

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