SIGA Majpell 5 - Diffusible Vapour Control Layer - 1.5m x 50m roll

SIGA Majpell 5 - Diffusible Vapour Control Layer - 1.5m x 50m roll
Guide Price
Rate this product
SIGA Majpell 5 - Diffusible Vapour Control Layer - 1.5m x 50m roll
Guide Price: £194.23 (£233.08 inc VAT)
Price per m2: £2.59/m2 (£3.11 inc VAT)
  • Product Code: A1-7621
  • Delivery Time: 3 - 5 days
  • Brand: SIGA
  • Model: 1.5m x 50m - 75m2
  • Weight: 9.00kg
Our ratings on 23-10-2026:
Google My Business Reviews
4.8 out of 5

SIGA Majpell 5 - Diffusible Vapour Control Layer - 1.5m x 50m roll

Length: 50000mm
Width: 1500mm
Thickness: 0.4mm
Roll Coverage: 75m2
Weight/m2: 0.12kg
Weight: 9kg

SIGA Majpell 5 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 5 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. 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 5 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 ≈ 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

                            

SIGA Sicrall 170 - Single‑Sided Airtight Sealing Tape - 170mm x 40m roll - Box of 1 roll
Guide Price
Brand: SIGA Model: 170mm x 40m roll - Box of 1 roll
Delivery Time: 3 - 5 days
SIGA Sicrall 170 - Single‑Sided Airtight Sealing Tape - 170mm x 40m roll - Box of 1 roll
SIGA Sicrall 170 is a high‑performance, single‑sided airtight sealing tape designed for large‑area bonding of vapour control layers, membranes and panel joints on the warm side of the building envelope. With its extra‑wide 170 mm format, Sicrall 170 provides secure, durable adhesion over broad overl..
Guide Price: £96.76
£116.11 inc VAT
SIGA Majpell 5 - Diffusible Vapour Control Layer - 1.5m x 50m roll
Guide Price
Brand: SIGA Model: 1.5m x 50m - 75m2
Delivery Time: 3 - 5 days
SIGA Majpell 5 - Diffusible Vapour Control Layer - 1.5m x 50m roll
SIGA Majpell 5 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 5 is used in..
Guide Price: £194.23
£233.08 inc VAT
SIGA Majrex 200 - Vapour Control Layer - 1.5m x 50m roll
Guide Price
Brand: SIGA Model: 1.5m x 50m - 75m2
Delivery Time: 3 - 5 days
SIGA Majrex 200 - Vapour Control Layer - 1.5m x 50m roll
Majrex 200 is SIGA’s high‑performance vapour control layer designed for warm‑side installation in roofs, walls and ceilings. Its directional vapour‑control technology (Hygrobrid®) allows moisture to move safely out of the structure while preventing moisture from entering, significantly reducing the ..
Guide Price: £316.51
£379.81 inc VAT
SIGA Majpell 5 - Diffusible Vapour Control Layer - 3m x 50m roll
Brand: SIGA Model: 3m x 50m - 150m2
Delivery Time: 3 - 5 days
SIGA Majpell 5 - Diffusible Vapour Control Layer - 3m x 50m roll
SIGA Majpell 5 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 5 is used in..
SIGA Sicrall 60 - Single‑Sided Airtight Sealing Tape - 60mm x 40m roll - Box of 10 rolls
Guide Price
Brand: SIGA Model: 60mm x 40m roll - Box of 10 rolls
Delivery Time: 3 - 5 days
SIGA Sicrall 60 - Single‑Sided Airtight Sealing Tape - 60mm x 40m roll - Box of 10 rolls
SIGA Sicrall 60 is high‑performance single‑sided adhesive tape designed for creating durable, airtight seals on vapour control layers, membranes, and panel joints on the warm side of the building envelope. It provides long‑term adhesion on smooth and slightly rough substrates, ensuring reliable airt..
Guide Price: £309.61
£371.53 inc VAT
SIGA Majpell 25 - Diffusible Vapour Control Layer - 1.5m x 50m roll
Brand: SIGA Model: 1.5m x 50m - 75m2
Delivery Time: 3 - 5 days
SIGA Majpell 25 - Diffusible Vapour Control Layer - 1.5m x 50m roll
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 ..
This product is listed in the following categories and systems (click to show).