The right fit. The right price.
Professional K-FLEX Pipe Insulation. Better Prices When You Buy More.
One length or the whole job. Genuine K-FLEX self-seal insulation for 15mm pipes, with volume savings you can see and UK delivery.
Product illustration · photograph to follow
Genuine K-FLEXSpecialist pipe insulation
More metres. Less per length.Automatic volume discounts
A UK business behind every orderOwned & fulfilled by Brand Direct Services
Small job or big project
Your quantity. Your better price.
No quote requests. No hidden trade prices. Choose the lengths you need and the right price applies automatically to every length.
All prices include VAT. Standard delivery £3.95, FREE on orders over £30.
| Lengths | Metres | Per length | You save |
|---|---|---|---|
| 1 | 2m | £3.19 | 0% |
| 2–4 | 4–8m | £3.03 | 5% |
| 5–9 | 10–18m | £2.87 | 10% |
| 10–19 | 20–38m | £2.71 | 15% |
| 20–49 | 40–98m | £2.62 | 18% |
| 50+ | 100m+ | £2.49 | 22% |
Savings compared with the single-length price. One tier applies to your entire quantity.
Ordering 200+ lengths or need a regular supply?Plumbers, installers and maintenance teams: ask us about trade quotes and accounts.
Request a trade quoteA simple choice for the job
Precisely sized.
Ready to fit.
Black closed-cell K-FLEX foam for 15mm pipework. Check your pipe's outside diameter before ordering: 15mm pipe is about 47mm around.
01 / Pipe fit
15mm
Internal bore, for 15mm outside-diameter pipe.
02 / Insulation
9mm
Wall thickness around the pipe.
03 / Length
2 metres
Each individual length. Order exactly the quantity you need.
04 / Closure
Self-seal
Pre-slit seam with self-adhesive strips for fitting around the pipe.
From length to fit
A straightforward installation.
Measure first. Work neatly.
Follow the manufacturer's instructions for your application.
- 01
Open the seam
Open the pre-slit insulation along its length.
- 02
Position
Place it around a clean, dry 15mm pipe.
- 03
Peel the backing
Remove the protective backing from the self-seal edges.
- 04
Press closed
Press the seam firmly together along its full length.
Illustrative fitting overview. Product suitability and any additional joint treatment should be checked against the K-FLEX product instructions.
Specialist products. Real people.
A UK business behind the box.
K-Flex Direct is an independent online retail store owned, operated and fulfilled by Brand Direct Services, a UK-based wholesale and distribution business in Stockton-on-Tees.
We keep things straightforward: genuine K-FLEX products, clear volume pricing without a trade quotation, and one business responsible for your order.
Meet Brand Direct ServicesWill it fit my pipe?
This insulation is for 15mm pipe, the standard size for most domestic hot and cold water and central heating pipework. The size refers to the outside diameter of the pipe. To check, measure across the pipe with callipers, or wrap a tape measure around it and divide by 3.14. A 15mm pipe measures about 47mm around.
How many lengths do I need?
Each length covers 2 metres of pipe. Measure the total run of pipe you want to insulate and divide by 2, rounding up. Or enter your metres in the calculator at the top of the page and it will work out the number of lengths for you.
How does volume pricing work?
The more lengths you order, the lower the price per length. The discount is applied automatically to every length in your basket, and you can see the exact price at every quantity in the table above. No trade account or quote is needed.
How much is delivery and how fast is it?
Standard delivery takes around 3 working days after dispatch and is free on orders over £30. Express delivery takes 1–2 working days. Orders placed by 1pm on a working day are dispatched the same day. You'll see the delivery charge in your basket before you pay. We deliver to UK mainland addresses.
Do you deliver to Northern Ireland, the Highlands or the islands?
We can't currently take online orders for Northern Ireland, the Scottish Highlands and Islands, the Isle of Man, the Channel Islands or the Isles of Scilly. Please contact us for a delivery quote.
How can I pay?
You can pay securely by debit or credit card, Apple Pay or Google Pay, or by bank transfer. We don't charge a fee for paying by card. Bank transfer orders are dispatched once your payment has been received.
Will I get a VAT receipt?
Yes. All prices include VAT, and your order confirmation email shows the VAT amount. You can view all your past orders in your account at any time.
Is this genuine K-FLEX?
Yes. We supply genuine K-FLEX ST/SK self-seal pipe insulation. K-Flex Direct is operated and fulfilled by Brand Direct Services, a UK wholesale and distribution business based in Stockton-on-Tees.
I need a large quantity. Can I get a quote?
Our volume prices apply automatically online for any quantity. If you need 200+ lengths, a regular supply or a trade account, please contact us and we'll be happy to help.
A question before you order?
Let's get the fit right.
For product, delivery or trade enquiries, our team at Brand Direct Services is happy to help.