Proctor
Proctor Air VPU Membrane - All Sizes
Proctor Air VPU Membrane - All Sizes
The option you have selected may be in short supply. To make an enquiry please call us on 020-3936-2839 or email us at sales@i4lgroup.co.uk.
SKU:A154020
Est Delivery between 6th Feb and
12th Feb.
How much will I need?
How much will I need?
We recommend adding 10% of additional product to the calculation to account for errors, damages, and obstacles in your project
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- Shipping protection for peace of mind
- Fast processing and delivery
- Flexible delivery options
Product Information
Proctor Air is a vapour and air permeable underlay (VPU) for pitched roof applications. While the majority of VPUs in use today utilise an airtight, vapour permeable, film layer to achieve their performance, Proctor Airs’ SMS (Spunbond Meltblown Spunbond) structure allows high levels of airflow in addition to the transport of moisture vapour, making the formation of condensation virtually impossible.
Independent studies of the effect of air permeability have confirmed that lofts using air permeable underlays have more consistent air-flow through the roof than those found in traditionally ventilated lofts, according to BS5250, so whatever side of the vents/no vents debate you sit on, Proctor Air has it covered. Its heavyweight 170gsm three-layer structure also containing a hydrophobic in every layer, gives a Class W1 rating under the latest EN13859-1 specifications.
Key Features:
Vapour Permeable: Proctor Air has an Sd-value of 0.02m and a vapour resistance of 0.1 MNs/g, making Proctor Air one of the highest performing vapour-permeable membranes on the market.
Fully Air Permeable: Air permeable membranes allow air movement through the roof, as well as allowing moisture to escape by diffusion. This means that condensation is far less likely to form on the membrane itself, and also allows the membrane to deal with much higher moisture levels within the building, for example during the drying out period.
Highly Water Resistant: Proctor Air is rated W1 under EN13859-1, and has a hydrophobic additive in all 3 layers. The membrane can be left exposed to provide temporary weather protection to the building envelope for up to four months (see FAQs, page14-15). Proctor Air has a Hydrostatic Head of water of over 1m as recommended by NFRC Technical Bulletin 6. It is good practice not to leave the underlay exposed longer than necessary
Wind Uplift Resistance Complies With BS5534: Based on fully independent 3rd party testing, Proctor Air can be utilised across the UK. This, in addition to no requirement for high level ventilation or the use of a vapour control layer, ensures Proctor Air remains the simplest and most cost effective method of achieving regulation compliance.
More Uniform Airflow Than Vents: The air permeability of Proctor Air means a non-ventilated roof fitted with Proctor Air allows a more consistent air flow through the roof than a roof ventilated as per BS5250, without expensive and time consuming ventilation hardware fitted to the roof.
No VCL Required: Installing Proctor Air will mean that a vapour control layer is not required for non-ventilated cold pitched roof constructions.
15 Year Warranty: Proctor Air’s 15-year warranty provides peace of mind on any project
Technical Specifications
| Brand | Proctor |
| Size | 1m x 50m (50m2) |
Delivery Information
Est Delivery between 6th Feb and
12th Feb.
Delivery will always take place on a weekday (Mon - Fri excl. public holidays).
An exact delivery charge will be calculated at checkout based on your order.
Frequently asked questions
How do I track my order?
As soon as your order is dispatched, you'll receive a dispatch email with delivery dates and details for your order.
If you require an update on your order, you can email customerservice@i4lgroup.co.uk with your order number for assistance.
Can I order now and pay later?
Yes, we offer a variety of flexible payment options to all our customers.
When checking out online, you'll be able to avail of multiple buy now, pay later options with Klarna or PayPal.
The flexible payment options available to you at checkout will be based on the total value of your order.
For B2B customers, you can apply for a 30-day trade credit account, and you'll also unlock:
- Dedicated trade pricing
- Loyalty points and rewards
- A dedicated account manager
Do you really have the best prices online?
Yes! We even have a price match guarantee.
We are so confident that we have the best prices out there that we will match the price of any other online or local retailer.
If you find the same product cheaper elsewhere, we will match the price — just send us the quote or website link.
Read more: Price Match Guarantee
I have a large-scale project, can I get a quote?
Yes, if you are carrying out a construction project that requires a large quantity of materials, email sales@i4lgroup.co.uk
with the following information and we will get back to you with your very own bespoke price quote:
- Delivery postcode and address
- Mobile number
- Company name
- A list of required materials and their quantities
Can I open a trade account?
Yes! Trade customers can open a B2B account to unlock bespoke pricing, B2B discounts, trade credit, loyalty points, and a dedicated personal account manager.
You can learn more here: Open a Trade Account
Can I cancel or amend my order after placing it?
Yes, if your order has not yet been processed for dispatch, cancellation/ amendments should be possible.
Our team works quickly to get your order delivered as soon as possible so it is likely that your order will be processed for dispatch within 2-3 hours of purchase.
Contact us immediately via customerservice@i4lgroup.co.uk or call 020 3936 2839 during opening hours.
If you wish to amend your order after it has been processed by our team, it will be treated as a return or a separate new order.
Read more: Returns
What is your returns policy?
Changed your mind about your order? no problem! we offer a 14 day returns period after your order is delivered.
To avail of this your order must be unused, in its original packaging, and suitable for resale.
Refunds are issued immediately after the goods are received and inspected by our team.
If an item arrives damaged or incorrect, you must notify us within 48 hours of delivery.
Prior approval is needed before returning any goods – do not return without authorization.
Special order items are exempt from returns.
Read more: Returns
Why Choose Us?
| Factors |
|
Other Stores |
|---|---|---|
| Customer service | Easy to reach, and eager to help | Difficult to contact |
| Shipping speed | Fast and organised | Unpredictable |
| Competitive pricing | Price match guarantee | What you see is what you get |
| Loyalty program | Points + exclusive deals | Basic discounts |
| Expert advice | Free 1-on-1 sessions | Self-service only |
| Trade accounts | Bespoke pricing, trade credit, and dedicated account manager | none available |
