Duralead Multyfilm


Columbus House, Altrincham Road
Manchester, M22 9AF

Tel:  (+44) 0161 946 1164

Fax: (+44) 0161 946 1033

Email: sales@regalead.co.uk

Frequently Asked Questions

If you were asked to describe the products of Dura Lead and Multyfilm, how would you describe them?

Dura Lead self adhesive lead overlay and Multyfilm coloured film can be described as the two major products that are required to create spectacular overlay stained glass windows. Brought together, these two majestic products bring out the warmth and beauty into your home or work environment while providing more flexibility, safety and affordability than of a traditional stained glass window.

Using Dura Lead Overlay together with Multyfilm colour, the glass crafter is able to create breathtaking works of art, using this individual process of permanently bonding Lead overlay and coloured films to a single pane of clear glass, resulting in a jointless, one-piece construction that cannot be attained with traditional stained glass.

Where are Dura Lead and Multyfilm used?

Duralead and Multyfilm are used primarily by insulated glass unit manufacturers who wish to create traditional leaded window designs onto insulated glass sealed units. This cannot be achieved with the traditional method of stained glass making. These two products are also used by stained glass artisans and D.I.Y enthusiasts. Virtually any glass surface can be converted using this sensational process. Take a walk through the home and see how many windows have possibilities for this process. Entrance doors, side windows, kitchen cabinet doors, mirror surfaces, dividing room windows, shower doors, sidelights, roof lights, table surfaces and a multitude of other applications. All provide colourful opportunities for personal expression.

How does the Overlay process compare to traditional stained glass?

Traditional stained glass is something special, but has limited applications. It would also take many years to learn the art of stained glass making and to become a true craftsman. On the other hand, the Overlay process is much easier and can be learnt within weeks. In fact, to teach a competent person the overlay skills could take less than a month. Using overlay you are able to create stunning works of art that are compatible with true Traditional stained glass, but with the benefits that Overlay offers.

  • Jointless structure offers more strength than traditional cut stained glass. Overlay projects are watertight and do not leak like traditional stained glass. They neither sag nor require any support rods.
  • A better design option and no need for complicated, costly tools that are required to create traditional stained glass projects.
  • No need to replace windows or glass. Overlay can be applied directly on to existing vertical or horizontal glass surfaces.
  • Reduces UV exposure when applied to glass surfaces.
  • Multyfilm Overlay together with Dura Lead are incredibly strong and flexible and can be processed through automatic glass washers.
  • Overlay increases the strength of the glass and prevents it from shattering.
  • Overlay is an alternative product that can be used in areas where traditional stained glass cannot.

How does Multyfilm Overlay compare to painted glass?

Painted glass is not permanent and will fade, crack and peel with age. Lighter colours may fade or disappear in less than 12 months. For professional applications, we would never recommend painted colours. Multyfilm Overlays have incorporated UV inhibitors that prevent colour fade. They also have a scratch resistant coating that prevents oxidization, assuring you of a window that will last for years.

Will Dura Lead and Multyfilm Overlay be permanent once they are applied?

Dura Lead self adhesive Lead strip and Multyfilm coloured overlay are of professional standards and when applied in the correct manner, will be a permanent fixture.

Can I use Dura Lead Self Adhesive Lead Strip on both sides of the glass?

It is not always necessary to apply Overlay to both sides of the glass, but to make a professional looking window that truly resembles traditional stained glass, we would recommend the application to both sides. If your project is on a budget there is no reason why Overlay cannot be applied to one side of the glass. Also there will be applications where it is not possible to apply Overlay to both sides.

Which side of the glass should I apply the Multyfilm Overlay?

Multyfilm Overlay should always be applied to the inside of the glass panel. If this is not possible and you wish to apply the overlay to an exterior project, it will not be covered by guarantees.

In which order should I apply Dura Lead Self Adhesive Lead Strip and Multyfilm Overlay Colour?

You will always be following a template when creating your overlay glass project. It is not set in stone, but we recommend that when working in your home you should begin by applying the lead overlay to the outside of your house window. If you are applying overlay on a work bench, apply the lead to one side of the glass first and make sure it is well pressed down.

On the opposite side of the glass apply the Multyfilm Overlay colour. For glass with rough surfaces like shower doors or ceiling boxes, use the smooth side of the glass it works better. Once you have applied the overlay film to the required areas, begin the lead work and cover all the joints of the overlay film. If you have applied the overlay film with application liquid you will need to let it dry out before applying the lead overlay. The recommended drying time is 4 to 24 hours. The warmer the room temperature the faster the film will dry. You could speed this process up by carefully blowing warm air over the film.

How can I choose a design for my new Stained Glass project?

Dura Lead offers a large range of designs and patterns as well as design books. If you have something special that you like, we can draw it for you. Choose your pattern, let us have the size and we will create the template for you. Choosing the colour can be more difficult, so please take your time. If you'd like a stained glass kit complete with pattern template and tools, just go to our retail section.

How do I use my template once I have chosen one?

You can begin your project by laying the design on a flat bench or table. Carefully position your glass or window panel over the design. This will only apply to new applications. For windows in the home, apply the template to the inside of the window. Use small pieces of adhesive tape to hold the pattern in place. You should now be in a position to evaluate the project at hand. Imagine the template to be a map. Certain strips of lead must be applied before others. Each strip of lead overlay must be covered by another strip, this will prevent the loose Dura Lead Strips coming away later. If you don't get it right you can tuck them under afterwards. We recommend that 6mm (1/8in) and 4mm (3/16in) be used to create most colourful panels. The narrower the lead profiles, the easier it is to bend and curve.

Where do I get a full set of application instructions?

The complete guide to applying Overlay can be found in our application section.

What are the specifications for the Dura Lead and Overlay Multyfilm with respect to temperature, UV resistance?


Multyfilm overlays conform to every British standard requirement, as well as meeting all the relevant American standards. Spec sheet available.

Multyfilm Overlays are available in more that 320 colours and textures and are formulated from ink containing built-in UV stabilizers. Multyfilm also has a scratch resistant covering that prevents oxidization. It has successfully been applied to glass and polycarbonate sheet, with no lead peeling away. Multyfilm Overlay is resistant to water, mild acids, salt, alkalis, petroleum based greases, oils, and aliphatic solvents. Minimum application temperature for film is 40°F.


All Duralead Overlay products are self adhesive and are crafted from refined lead with a controlled addition of other metals to produce the unique properties that Duralead requires. Dura Lead self adhesive lead strip has a high initial tack, with excellent shear and peel strength and is suitable for processing through automatic glass washers. Resistance to UV is good with no discoloration or degradation. Application temperature for lead range from 50° to 122° F. Meets all the relevant British Standard 5713/ EN1279 requirements. Spec sheet available

I've noticed that my silver lead has spots and the once shiny silver surface has dulled, what causes this and how can I prevent this from happening?

Lead undergoes a natural process called oxidization. As there are no protective barriers on the lead surface, it is very difficult to prevent discolouration. Oxidization occurs when lead is exposed to oxygen for a period of time. Temperature and humidity affect the amount of oxidization that can accumulate on the metal surface. Our ready aged and coloured leads have a protective barrier which prevents oxidization. The down side of this product is the price and it is not really recommended for external use.

Patina or acid can be used to darken the surface of regular lead, but this will not prevent oxidization. However a light coat of patination oil can be applied to prevent uneven colouring. It is much better to leave the lead to the natural elements and the overlay will eventually age to a grey metal colour. There are a few things that you can do to silver lead to ensure that a more uniform oxidization takes place.

1. Don't let untreated lead sit around for too long. Complete your work as soon as possible, as oxidization begins immediately when exposed to air.
2. Clean your project and remove any excess moisture; a simple rinse and blotting will do.
3. If your work has oxidized to the point where white powder or undesirable dulling of the lead has occurred, you can use a mild abrasive action to remove the oxidization. A fine steel wool pad (grade 000 or 0000) can be used. A scotch brite pad can and will scratch the glass. This will not restore the original sheen of the lead, but it will remove the undesired oxidization.
4. You may also want to use a mixture of baking soda and water to clean the metal surface. Make sure to rinse thoroughly before applying any patina as any residue left behind may compromise the effectiveness of the chemicals. Also, if using steel wool, make sure there are no steel hairs left behind as this will cause red rust spots on the lead and glass if left to oxidize on their own.

I live in an area where weather can be pretty extreme. How will the film and lead hold up if it's exposed to the elements?

Multyfilm Overlay and Duralead products have been used very successfully for years in both hot and cold climates. From the coldest areas of Russia to the hot spots of Thailand. Each year, Thousands of tonnes of overlay leads are used throughout the United Kingdom and Europe, as well as the United States. Multyfilm and Duralead are two outstanding products and when applied correctly will withstand most temperature ranges. Our overlay lead and film will withstand ranges from-50°F to 275°F.

I have a large window in my home and I would love to apply Overlay Stained Glass on to it. The only thing that has previously prevented me from doing so is the concerns I have about my children around lead. Is there something else I can use?

As we are all aware, there are many places you would not wish to use lead. One in particular would be where children have access. In 2002 we received requests from a number of overseas customers who had this exact concern. Architects were unable to incorporate stained glass into their developments because of the lead factor. In 2003 we developed and created what we know to be the Architects Tin Zinc overlay. This product is 100% lead free and can be applied anywhere.

How can I pay when I order?

Duralead accept most forms of payment. Credit Cards, Wire Transfers, and International Money Orders.