Professional
Leather Care.

Instructions

How to Use LeTech Vinyl & Leather Weld

LeTech Vinyl & Leather Weld is a professional heat-activated repair compound.

The product must be cured using a suitable heat gun or leather repair iron. It will not cure by air drying.

Correct temperature control is essential to achieve a durable, flexible repair without damaging the surrounding material.

Step 1 – Clean and Prepare the Surface

Thoroughly clean the damaged area using LeTech Leather Ultimate Cleaner.

Where necessary, use LeTech Leather Alcohol Cleaner or Leather Liquid Degreaser to remove grease, oils and other contamination that could interfere with adhesion.

Allow the surface to dry completely before proceeding.

Step 2 – Prepare the Damaged Area

Inspect the damage and remove loose or deteriorated material.

Carefully straighten any raised or distorted edges.

For holes or larger tears, reinforce the underside using a suitable backing material to provide additional support.

Ensure the damaged area is stable before applying the repair compound.

Step 3 – Apply Vinyl & Leather Weld

Apply a thin layer of Vinyl & Leather Weld directly to the damaged area.

For deeper damage, initially fill approximately 50% of the depth, leaving sufficient space for additional layers and final texture replication.

Spread the compound evenly using a suitable repair spatula or palette knife.

Avoid applying excessively thick layers, as these can prevent the compound from curing correctly.

Step 4 – Activate the Repair with Heat

Using a suitable leather repair iron or hot-air gun, carefully heat the repair.

The repair compound should reach approximately 180°C to activate curing.

Typical curing time is approximately 40–180 seconds, depending on the thickness of the application, temperature and working conditions.

As the compound cures, the surface will become slightly glossy.

Use controlled heat application to avoid scorching, melting or distorting the surrounding leather or vinyl.

Step 5 – Allow the Repair to Cool

Once the compound has been correctly heated, allow the repaired area to cool completely.

A LeTech Chill-Bar may be used to accelerate cooling.

When correctly cured and cooled, the compound should feel firm rather than sticky or tacky.

Step 6 – Build Additional Layers

For deeper repairs, apply further thin layers of Vinyl & Leather Weld as required.

Each layer must be individually heat-cured and allowed to cool before the next layer is applied.

Continue until the damaged area has been sufficiently filled, leaving the final layer ready for texture replication.

Step 7 – Reproduce the Original Grain

For a more natural-looking repair, use LeTech Leather Grain Copier to reproduce the surrounding surface texture.

First, create a grain impression from an undamaged area with a matching texture.

Apply the final layer of Vinyl & Leather Weld to the repair.

Position the prepared grain impression over the repair and apply heat through the appropriate protective paper using a suitable repair iron.

The heat activates the compound while the grain impression transfers the original surface texture.

Allow the repair to cool completely before carefully removing the impression.

Important: Ensure the grain impression and protective materials are suitable for the temperature required. Do not apply an uncontrolled heat source directly to the impression or surrounding upholstery.

Step 8 – Complete the Restoration

Once the repair has fully cured and cooled, inspect the surface.

If necessary, carry out any final preparation before recolouring.

Apply LeTech Leather Colourant to match the surrounding material, followed by the appropriate LeTech Leather Top Coat.

Follow the individual product instructions for application and drying.

Troubleshooting – If the Repair Remains Tacky

Vinyl & Leather Weld should become firm after correct heat curing and cooling.

If the compound remains sticky or tacky, consider the following:

Insufficient Heat

The compound may not have reached the required curing temperature of approximately 180°C.

Check the heating method and ensure sufficient heat reaches the repair.

Excessive Application Thickness

Thick layers can prevent heat from penetrating throughout the compound.

Where necessary, remove excess material and rebuild the repair using thinner layers.

Heat Loss Through the Material

Thick or heavy materials, including certain convertible hood fabrics, can absorb and dissipate heat.

A more concentrated heat source or longer controlled heating period may be required.

Surface Contamination

Residual oils, grease or other contaminants may interfere with adhesion and repair performance.

Ensure the surface has been thoroughly cleaned and prepared before application.

Important Information

• Vinyl & Leather Weld is a heat-activated product and will not cure through air drying.
• A suitable heat gun or leather repair iron is required.
• The compound must reach approximately 180°C for effective curing.
• Avoid overheating or damaging the surrounding material.
• Apply thin layers and cure each layer individually.
• Allow the repair to cool completely before handling.
• Always test compatibility on an inconspicuous area.
• Work in a well-ventilated environment and avoid inhaling fumes produced during heating.
• Wear appropriate protective equipment when working with heated tools and materials.
• Keep out of reach of children.

Storage Information

Store in tightly closed containers in a cool, dry and well-ventilated area, protected from direct sunlight.

Storage temperature: 5–35°C

Shelf life: Not specified in the existing eBay product information.