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9122 Reviews | 4.4/5 Stars Gold Trusted Service Award 2021
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Leister TRIAC ST - Roof Membrane Welding Kit With 120V Hot Air Gun

Reasons why homeowners choose this product:

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Special Price £687.26 Regular Price £773.17
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Estimated Delivery:1-2 Days


9122 Reviews

Gold Trusted Service Award 2021

Product Overview

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9122 Reviews

Gold Trusted Service Award 2021

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Lead Time1-2 Days

complete kit for your welding project, this excellent set comes with everything you will need to weld your roof membranes successfully for a great, professional-looking finish. At the centrepiece of this outstanding collection is the TRIAC ST 120V hot air gun. 

Designed to both weld and fabricate plastic materials, this hot air gun is the perfect choice for those looking for a tool that comes packed with a range of features to help streamline and simplify the process without compromising any of the excellent results.  

This particular model is a 120V piece, and can reach temperatures of up to 700 degrees, more than powerful enough for the majority of plastic and membrane-related projects. 

Overview of the TRIAC ST - Roof Membrane Welding Kit with 120V Hot Air Gun 

  • Complete kit – carry out your welding effectively and efficiently 

  • Ideal for on-site work  designed to function in a range of different construction environments 

  • Manual temperature adjustments  - full control over heat levels up to 700 degrees 

  • Extremely durable – able to withstand a range of situations and environments 

  • Lightweight and easy to use – weighs only 1kg, can be operated with ease 
  • Compatible with different nozzles  - works with a wide range of nozzle types 

Common Questions About This Roof Membrane Welding Kit

What does this kit contain? 

This kit contains everything you will need to carry out your welding project, including: 

  •     Leister TRIAC ST 120v – The excellent and innovative hot air gun that allows for manual control over the temperature, this product boasts all the latest features and remains a firm favourite amongst professionals 
  •     Leister 40mm Slot Nozzle – a nozzle that concentrates the hot air flow through a 40mm slot, it is great for covering more specific areas on your project and controlling the flow of air effectively 
  •     Leister 20mm Slot Nozzle – a 20mm alternative to the 40mm nozzle, it concentrates the hot air even further through a smaller, more precise slot. 
  •     Leister 40mm Silicone Roller – this roller is ideal for applying gentle pressure to areas that need smoothing or flattening out, as well as areas that require additional pressure during or after the welding process. 
  •     Leister Penny Roller – a roller designed for small areas such as cracks, corners and gaps, the brass penny roller has been designed to be used as effectively as its larger counterparts. 
  •     Seam Inspection Probe – Efficiently inspect the strength and security of your welded seams with this excellent probe piece 
  •     Roofing Shears – an excellent pair of shears that can be used to carry out a variety of roofing tasks 
  •     Wire Brush – a brush for the cleaning and maintenance of your nozzles. Keep them looking neat and tidy, as well as fully functional, with this durable brush  

What are the main benefits of the Hot Air Gun? 

This gun has been designed to aid in the joining of plastic sheets and surfaces, in order to make for a more secure bond that will vastly improve the sturdiness of the plastic, eliminating potential areas in which leaks and dirt ingress can occur. 

This particular hot air gun is eligible for use onsite, increasing its versatility considerably. Extremely light in weight at around 1 kilogram, it is very portable, and can be used easily for a range of different tasks. 

This tool can also be used with various different nozzles from the range (sold separately). These nozzles with help to make your hot air gun even more versatile, with a range of styles and specialities to help aid the tool when in use. 

What is this kit suitable for? 

This hot air gun is ideal for various tasks involving the melting of plastic material. It can be used to add, solidify or remove, as well as to join two separate pieces of plastic together. It is very easy to life and thanks to the specifically placed handles extremely simple to manoeuvre, meaning you can get into all of the tight corners and edges and avoid leaving gaps. 

How durable is this 120V Air Gun? 

This tool has been designed for use on a busy construction site, and as such is a very durable product. It possesses a very robust design, meaning it is resistant to knocks and lurches as you attempt to work on those hard-to-reach areas. This tool also benefits from automatic carbon stop, as well as a heat element protection system.  

Have More Questions About This Roof Membrane Welding Kit? 

If you have any questions, don’t hesitate to get in touch with our award-winning team. They’ll help you pick the ideal product for your project, whether you’re revitalising an existing property or are tacking a larger new build. You can get in touch by calling 01295 565 565 or using our online live chat. 

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Lead Time1-2 Days
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With the festive break approaching, we're aim to keep you informed about any impact this may have on your delivery. You will therefore find additional information about when orders placed over during this break will be processed below the 'Add to Basket' button on most products. If you still have questions, please call our friendly team on 01295 565 565.


We understand that ordering products online can be daunting, especially when ordering roofing materials. It is for this reason that we make our delivery processes as simple as possible for you. However, there are a few things to know about our delivery processes. These include:

  • When placing an order, you’ll see a breakdown of your delivery charge in your shopping cart. These charges are for the UK mainland only, and additional charges may apply for Northern Ireland, the Scottish Highlands and other regions.

  • Deliveries only take place on working days (Mon - Fri) and do not take place on Bank Holidays. 

  • You’ll find an estimated delivery on the majority of product pages below the 'Add to Basket' button. Whilst we aim to deliver your items within the estimated delivery, it is only an estimate. 

  • You're able to select a preferred delivery date in your shopping basket. Whilst we aim to deliver your items on this date, it is not guaranteed.
  • Orders placed after 12pm, during the weekend, and on a bank holiday will not be processed until the next working day. Please consider this when placing your order as it may impact your delivery date.

  • After you’ve placed your order, you’ll receive an order confirmation by email outlining the details of your order. Please check your order confirmation email and inform us of any mistakes or errors immediately.

  • Shortly after receiving your order confirmation you’ll receive a separate email confirming the planned delivery date.

  • We can only provide a delivery date and are not able to confirm the time delivery will be attempted. Therefore, we ask that somebody is able to accept and sign for your items throughout the started delivery date.

  • If you are unable to accept and sign for an order, it can be left in a safe location in most circumstances. Please email if you would like an item to be left without a signature. 

  • Whilst we aim to hold the majority of our products in stock, due to the vast number of products we offer this is not always possible. Because of this we are required to send your items directly from the manufacturer on a small number of occasions, at which point a different delivery charge may apply as standard.  

  • On occasions the items ordered may be shipped from different depots, which could result in seperate deliveries taking place.

If you have more questions about our products or delivery, please contact our team online or by telephone.

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We understand mistakes can be made and we therefore keep our cancellation and returns policy as simple as possible. However, there are a few things to know about cancelling an order or returning an item. These include:

Items Not Required

Should you no longer require an item, you have the right to cancel within 14 days of delivery unless the items are custom made. You needn’t give us reason for cancelling your order but will be required to notify us by email. Once notified we will provide an address for the items to be returned to and arrange the necessary refund.

Faulty or Damaged Items

On the rare occasion that an item is delivered faulty or damaged, we will exchange it or provide a refund. We must be notified by email as soon as possible and may require images. To avoid such an issue, we ask that customers do not sign for damaged goods.

Custom Made Items

A handful of items are ‘Custom Made’. This means they are typically manufactured to the specifications provided by you and are therefore non-refundable. This is unless they are deemed to be faulty or damaged at the time of delivery, at which point you should notify us by email as soon as possible.

Further Information

For further information on cancellations, returns and refunds please read our full policy by clicking here. This confirms any other requirements to consider (i.e. packaging), fees that may be charged (i.e. admin charges) and our policy for businesses.