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W400 Green Mineral

W400 Green Mineral
€31.37 Inc. VAT :  €25.50

Product Code:  W400GRMIN2


To order please call (+353) 01 621 5677

Special Offer:  Free Galvanised Nails 20mm 1kg when you order 1 item or more of this product.

W400 Green Mineral

10m x 1m roll

W400 mineral membranes are economical, glass fibre based waterproofing materials designed for use in traditional pour and roll multi-layer systems or as single layer on shed roofs.
Product Description
W400 is a glass fibre based, slate covered Cap sheet, saturated and coated with oxidised bitumen. The membrane carrier is a glass reinforcement, giving the material good dimensional stability. The upper layer is coated with slate protecting material from ultraviolet exposure and lower layer is finished with fine grained sand.

Product Features

  • Good low temperature flexibility at -5°C
  • Traditionally applied economical materials
  • Nail fixing, cold or hot mastic/bitumen application
  • Range of 5 mineral colours

W400 materials are generally used to cover sheds, garages and other garden building with overlaps fixed by nailing or glued over with mastic. When applied by traditional W400 should be installed in accordance with BS 8217: 2005 Code of Practice for Reinforced bitumen membranes for roofing, constantly observing TechnoNICOL installation recommendations and guidance. W400 membranes are applied on to previously installed base layer/underlay, clear of any debris or sharp projections.
Hot bitumen should be poured and spread in front of the roll ensuring a continuous coating for the full width. The Side and end laps must be maintained at minimum of 80 mm. The cap sheet should be offset 300 mm from the underlay to avoid side build up.

Harmonised standard
EN 13707:2004 + A2:2009

Health and Safety
Health and Safety should be observed at all times in accordance with HSE and Industry guidance. Specific Risk Assessments and Method Statements should be produced by contractors where necessary to ensure Working at Heights, Fire Safety and Manual Handling rules are compliant with current law and regulations. Health and safety data sheets are available for all materials on request from TechnoNICOL Technical Service Department.

Performance and Key Properties

Properties Test Method Declared Performance (W400)
Reinforcement type and weight   Glass Fibre, 90g/m2
Maximum tensile force L/T, N/50mm EN12311-1 400/400±100
Elongation, % EN12311-1 2.2/2.2±0.2
Resistance to tearing (nail shank), N EN12310-1 110/110±20
Flow resistance at elevated temp. oC EN1110 ≥ 70
Flexibility at low temp. oC EN1109 ≤ 5
Watertightness, kPa EN1928 10
Water vapour transmission properties EN1931 μ=20 000
Reaction to fire EN13501-5 Class E

Quality Assurance
W400 materials are manufactured following ISO 9001: 2008 Quality Management System and Environmental Management System approved to ISO 14001: 2004.

Technical Service and Other Products
Specialist advise and information on other compatible products is available on www.tn-europe.com


Products ordered from our online store are delivered from Monday - Friday each week, except for Bank Holidays. We aim to have all orders that leave our store delivered to you within 2 working days. Please note that some products may have specific lead times, which may affect the time it takes to receive your order.

We offer nationwide delivery anywhere in Ireland.


Small shipments

Parcel (Max 30kg):


Delivery Weight Nationwide Rates
Up to 30kg €5.00


Large shipments (pallets):


  Pallet Weight Nationwide Rates
Quarter Pallet (Max 250kg) €40.00
Half Pallet (Max 500kg) €45.00
Full Pallet (Max 1000kg) €50.00
2 x Full Pallets (Max 2000kg) €96.00
3 x Full Pallets (Max 3000kg) €138.00
4x Full Pallets (Max 4000kg) €176.00



Roof N Stop Ltd.


    Order online or call our Sales Team:
01 621 5677