OUR PRODUCTS

Standard Thermal Insulation Covers

Our standard range of removable thermal insulation covers is built for the most common applications in UK industrial and commercial sites. Valves, flanges, pipework sections, HVAC equipment: if it needs insulating and needs to stay accessible, this is where you start.

Every cover is manufactured in-house at our facility. We hold stock of core materials and offer fast turnaround on standard sizes, with nationwide delivery across the UK. Not sure if standard sizing will work for your application? Take a look at our bespoke thermal insulation jackets range or give us a call and we will advise you.

What is standard thermal insulation covers?

Standard thermal insulation covers, also referred to as removable insulation jackets, lagging jackets or thermal blankets, are pre-designed covers built to fit the most common valve, flange and pipework dimensions used across UK industry.

The key difference from hard lagging is simple. These can be removed by your maintenance team in seconds, without any specialist tools or training. The inspection or repair gets done, the cover goes back on, and your insulation is performing as it should. No stripping costs, no reinstatement delays, no covers left off and forgotten about.

What our standard covers are used for

Our standard range covers the most common applications on UK industrial and commercial sites:

Not sure which cover you need?

Call us on 07497 119 610, and our team will talk you through it.

Key features

Removable and reusable:

Designed for fast on-site removal without tools or specialist knowledge

Durable outer casing:

Silicone-coated glass fibre cloth, resistant to UV, chemicals and heat

High-performance insulation fill:

Mineral wool with aluminium foil facing as standard

Secure fastening:

Velcro, draw cords and clip systems for a tight, gap-free fit.

The business case for insulating your valves and flanges

An uninsulated valve loses the heat equivalent of several metres of bare pipe every single day. Across a plant room with dozens of exposed valves, that adds up to a significant and entirely avoidable energy cost. Fitting removable insulation covers is one of the fastest-payback energy efficiency investments available to building services and industrial operators, with many sites seeing payback in under twelve months.

Beyond energy savings, properly insulated valves bring surface temperatures down to safe levels, protecting your maintenance team from burns. They also guard against condensation and corrosion, which extends the service life of the equipment underneath.

For applications outside our standard range, including very high-temperature plants such as steam systems and boilers, see our high temperature insulation jackets

How it works

Our Ordering Process

Six straightforward steps from your first enquiry to a jacket fitted on site — built to order at our UK facility and delivered nationwide.

01. Communication

Contact us with your requirements and project details.

02. Email

Send us the valve or fitting type, nominal bore size, quantity and any relevant information.

03. Sketch / Drawing

Where possible, include a sketch or drawing. We’ll review and confirm the details.

04. Manufacture

We manufacture your insulation jackets to the highest standards.

05. Delivery

Your order is carefully packed and delivered to site on time.

06. Installation / Fit

Our team can install on site for a perfect fit and professional finish.

How to order

Contact us with the valve or fitting type, nominal bore size and quantity required. Where possible, include the valve manufacturer and model number. We can confirm availability and lead time quickly, and for anything outside the standard range, we will move straight to a bespoke solution

FAQ’s

Frequently Asked Questions

Lagflex’s standard range covers the most common valve and flange sizes used in UK industrial and HVAC installations, from 15mm nominal bore upwards. Contact us with your valve type and bore size, and we will confirm availability and lead time.
Our standard thermal insulation covers use a combination of Velcro straps, draw cords and clip fasteners. They can be removed and refitted quickly without tools, making them ideal for applications requiring regular maintenance access.

Our standard range is suitable for most HVAC and industrial heating applications. For steam systems, boilers and turbines, we recommend our high temperature insulation jackets range, which uses materials rated for extreme heat.

Yes. Our standard covers use a durable silicone-coated glass fibre outer casing with good resistance to UV and weathering. For demanding outdoor environments, a weatherproof specification is also available. Contact us for details.

Lead times depend on specification and quantity. Contact us with your requirements, and we will provide an accurate lead time and delivery estimate.