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Protect VP400 Plus LR Breathable Membrane


£112.32 Incl. VAT
£93.60 Ex. VAT

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Estimated Delivery: 2-3 working days 


The Protect VP400 Plus is a high-performance breathable roofing membrane with the lowest vapour resistance of any type LR roofing underlay in its class. The water and airtight membrane is suitable for use in all cold and warm pitched roof installations, and can be used as a temporary roof covering during construction*. Ensure the ultimate protection for your roof structure with the VP400 Plus breathable membrane.

VP400’s triple ply composition is strong and durable. Offering impressive wind uplift resistance, it meets requirements for unrestricted use in zones 1-5 at 345mm batten gauge. At 170 grams per meter squared, the UKCA and CE marked Protect VP400 Plus is a premium underlay that is still lightweight enough to be easy to handle and install.  Roofing Supplies are pleased to offer the VP400 in two sizes, simply select the option that suits your breathable membrane needs from the dropdown box.

Why Choose this Protect VP400 Plus LR Breathable Membrane?

  • Highly vapour permeable
  • Suitable for cold & warm pitched roofs
  • Good wind uplift resistance
  • Strong & durable
  • Extremely water resistant
  • UKCA/CE marked

Product Specifications:

Size: 1m x 50m / 1.5m x 50m (select from dropdown)

Nominal Weight: 170 g/m²

Roll Weight: 9.68 kg (1m) / 14.81 kg (1.5m)

Total Area Coverage:  50m² (1m) / 75m² (1.5m)

Unaged Tensile Strength MD / CD:  325 / 305 N/50mm

Aged Tensile Strength MD / CD: 290 / 295 N/50mm

Resistance to Tearing MD / CD: 248 / 294 N

Resistance to Water Penetration: W1 Class

Water Vapour Resistance:  0.08 MNs/g / 0.016 Sd

Flexibility at Low Temperature: -40°C

UV Stability: 3 months

Please note: *Air and vapour permeable underlays are not a total waterproof barrier and if used as a temporary waterproof covering, some rain penetration may occur. In certain conditions, particularly if there is persistent heavy rainfall combined with subsequent freeze/thaw conditions, an underlay should not be exposed for more than a few days. In the event of severe weather conditions, the product should be covered with tarpaulin (referenced in BBA Bulletin No 2. “Guide to Good Site Practice”)

Deliveries are made on the basis the customer can accept the goods, or willingness to off load the goods, or having means of mechanical offload, this also applies to heavier items such as pallets etc. All deliveries are made ‘kerbside’ and often it can be at the discretion of the driver. A large majority of deliveries would be made on a large rigid tail-lift vehicle and off loaded via a pallet truck and only on to flat surfaces such as tarmac, concrete and pavers. If you do have restricted access, please contact us prior to placing your order. We will always try to accommodate your needs. If a delivery fails due to access, we reserve the right to make a re-delivery charge. All delivery charges are calculated when checking out. The delivery charges included are for the Mainland UK only and do not apply to the Scottish Highlands, or Isles off the Mainland. Additional charges may apply for deliveries that aren’t classed within the Mainland (this is classed by ourselves, suppliers and couriers) Please contact us on 01752 466151 or Due to the nature of our business model, this can mean your order will be sent via multiple deliveries. Whilst we will make every effort to deliver your goods within the stated/requested time frame, we cannot guarantee availability from the manufacturer or the manufacturer's delivery schedules, so we would recommend the end user not to start/schedule any work until the goods arrive. Due to logistics of various couriers and suppliers we are unable to give times of deliveries. However, please call or email us on the day of the delivery and we will try to get an approximate time. Deliveries can take place from as earlier as 07:30 right up to 18:00 depending on the courier/haulier and taking into account local traffic etc.
You have 14 days from receiving your item(s) to return them should you wish to do so. Please contact us should you wish to arrange a refund/return. Any bespoke items such as cut to size lead, cut to size sheets and coping stones are all made to order and are non-refundable.

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