SIGA Majpell 25 - Diffusible Vapour Control Layer - 1.5m x 50m roll

SIGA Majpell 25 - Diffusible Vapour Control Layer - 1.5m x 50m roll
SIGA Majpell 25 - Diffusible Vapour Control Layer - 1.5m x 50m roll
Guide Price
SIGA Majpell 25 - Diffusible Vapour Control Layer - 1.5m x 50m roll
SIGA Majpell 25 - Diffusible Vapour Control Layer - 1.5m x 50m roll
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SIGA Majpell 25 - Diffusible Vapour Control Layer - 1.5m x 50m roll
Guide Price: £186.70 (£224.04 inc VAT)
Price per m2: £2.49/m2 (£2.99 inc VAT)
  • Product Code: A1-7624
  • Delivery Time: 3 - 5 days
  • Brand: SIGA
  • Model: 1.5m x 50m - 75m2
  • Weight: 9.08kg
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SIGA Majpell 25 - Diffusible Vapour Control Layer - 1.5m x 50m roll

Length: 50000mm
Width: 1500mm
Thickness: 0.4mm
Roll Coverage: 75m2
Weight/m2: 0.12kg
Weight: 9.08kg

SIGA Majpell 25 is a high‑performance, vapour‑control and airtightness membrane designed for the warm side of insulated building assemblies. It is diffusible, meaning it allows controlled drying towards the interior while preventing excessive moisture from entering the structure. Majpell 25 is used in timber‑frame, steel‑frame, and renovation projects to ensure long‑term moisture safety, airtightness, and energy efficiency. Majpell 5 is a robust, reinforced functional membrane engineered to regulate vapour movement and create a continuous airtight layer. Its sd‑value of approx. 2.5 m provides balanced vapour control suitable for modern insulated constructions.

The membrane is tear‑resistant, dimensionally stable, and designed for fast, reliable installation using SIGA’s airtightness tapes such as Sicrall and Rissan. Majpell 5 is ideal for new‑build and refurbishment, supporting high‑performance building standards including low‑energy and Passivhaus‑oriented designs. Majpell 25 offers balanced vapour control, excellent airtightness, and high durability, making it a dependable choice for modern insulated buildings. Its compatibility with SIGA tapes and its robust construction ensure long‑term performance and moisture protection.

CHARACTERISTICS

  • Diffusible vapour control - sd ≈ 2.5 m for safe moisture regulation.
  • Airtight layer - reduces heat loss and prevents uncontrolled air leakage.
  • High tear resistance - reinforced membrane for secure installation.
  • Stable and low‑stretch - ensures clean detailing and precise fitting.
  • Non‑toxic & solvent‑free - safe for installers and occupants.
  • Compatible with SIGA tapes - ensures durable, airtight joints.
  • Versatile application - suitable for roofs, walls, ceilings and loft conversions.

APPLICATION

  • Warm‑side vapour control in insulated roof and wall assemblies
  • Timber‑frame construction
  • Steel‑frame insulated walls
  • Ceilings and loft conversions
  • Energy‑efficient buildings requiring airtightness and moisture safety

                            

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