Kingspan
Optim R Inverted Roofing System
Optim R Inverted Roofing System
This product 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:Optim-R E
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Product Information
The OPTIM-R E Inverted Roofing System is perfect for projects that require the lowest U-value or the thinnest roof build-up. It is ideal for where there is little space for installing new roof insulation. OPTIM-R E is encapsulated in a coating for increased robustness and easier handling on-site. The vacuum insulation panels are accompanied by rigid extruded polystyrene insulation infill panels which can be cut to fit around problem areas such as roof lights or ventilator kerbs.
Product Highlights
- Next generation insulation with a superior level of thermal efficiency
- Ideal for constructions where a lack of construction depth or space is an issue
- Protective coating for increased robustness and easier handling
- Compatible with green roof systems
Optimum performance insulation for protected membrane flat roofs.
OPTIM-R E panels are rigid vacuum insulation panels with a microporous core which is evacuated, encased and sealed in a thin, gas-tight envelope. OPTIM-R E panels are encapsulated in a coating for increased robustness and easier handling on-site.
The vacuum insulation panels are accompanied by rigid extruded polystyrene insulation strips. They can be used where the remaining dimension to infill is below 300 mm or can be cut to fit around problem areas such as roof lights, ventilator kerbs or drainage gutters.
OPTIM-R E panels achieve a thermal conductivity of 0.008 W/mK for panel sizes:
- 600 x 400 mm
- 600 x 600 mm
- 1200 x 400 mm
- 1200 x 600 mm
OPTIM-R E panels achieve a thermal conductivity of 0.009 W/mK for panel size:
- 1200 x 300 mm
NB: For inverted roofing applications, a design value thermal conductivity should be used. See the product brochure for further details.
Technical Specifications
Brand | Kingspan |
Delivery Information


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