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Powerlon UltraPerm Max Roof Breathable Membrane


£80.10 Incl. VAT
£66.75 Ex. VAT

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Estimated Delivery: 2-3 working days 


UltraPerm Max is the highest grade breathable membrane available from Powerlon's UltraPerm range. UltraPerm Max can be used in all pitched roof types, as well as walls in timber frame structures. It can also be used for cold and warm roofs, as well as supported and unsupported and ventilated and unventilated roofs. UltraPerm is BBA certified to the latest British Standards (BS 5534:2014 + A1:2015 zones 1-5), tough, durable and offers fantastic tear resistant and expectational water vapour permeability.

Why Choose Powerlon UltraPerm Max Roof Breathable Membrane?

  • One of 4 grades available
  • Breathable with high water vapour permeability
  • High tensile strength & nail tear resistance
  • BBA Certified & CE approved
  • Exceptional W1 water resistance
  • Pre-printed marking lines
  • Can be used on warm & cold roofs, supported and unsupported, ventilated and unventilated roofs
  • Independently tested for full compliance with BS 5534:2014 + A2:2018

Product Specifications:

Width: 1m and 1.5m

Length: 50m

Weight: 155 gsm

Roll Weight: 1m - 8.3kg, 1.5m - 12.2kg

Colour: Green

Nail Tear Resistance: MD140N XD 230 N

UV Resistance: 3 months

BS 5542 Compliance: Zones 1-5*

Tensile Strength: MD 320 XD 200

Water Tightness: W1

Water Vapour Transmission (Sd): 0.02

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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