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    Car Fillers & Auto Body Fillers

    Achieving a perfectly flat surface is the most critical stage of vehicle repair. Whether you are dealing with a significant dent or a minor surface imperfection, the choice of filler dictates the final look of the paintwork. At Nebula Paints, we stock a wide range of professional grade auto body filler solutions designed to provide superior adhesion, easy sanding, and a perfect contour every time.

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    On saleRelo Super 2K Polyester Universal Putty Including Hardener (1kg)
    N30 Nitrocombi Stopper 0.25 Kg in a tube for automotive refinishing, superior adhesion and quick drying.
    2 Sizes Available
    On saleAiro Nautic Epoxy Filler (Light Grey) Including Hardener
    2 Sizes Available
    On saleP51 1Kg Glass Fibre Filler Incl. Hardener (1KG) in a tin container by Mipa, green polyester filler for automotive repairs.
    3 Sizes Available
    On saleP85 FIller 0.25 Kg - Mipa Fine White Filler canister for automotive refinishing and repairs.
    3 Sizes Available
    Save 49%Airo Nautic Ultra Light Epoxy Filler Including Hardener
    2 Sizes Available
    On saleRelo Polyester High Build Bodyfiller Including Hardener (250g)
    On saleMipa Spray Putty Grey (400ML) aerosol can next to round mirror for surface smoothing and scratch repair.
    On saleMipa Etch Filler High Build Spray (500ml)
    2 Colours Available
    Save 25%Mipa P60S Grey Polyester Spray Filler with Hardener 1Ltr in canister, ideal for automotive and industrial filling applications.
    On saleRelo Glass Fibre Bodyfiller Including Hardener (500g)
    On saleMonofil Bridging Filler inc Hardener - Glass Fibre Reinforced Putty for Automotive & Marine Repairs
    2 Sizes Available
    On saleMipa Fast Filler Spray (400ML) alongside a filled circular can, showcasing high-performance filler.
    Millaco AC 815 2K Filler (5L) With AC820 HS Extra Fast Hardener (1L) Kit
    3 Colours Available
    On saleRelo 4+1 2K HS Acrylic Filler (Grey)
    2 Sizes Available
    Relo

    Relo 4+1 2K HS Acrylic Filler (Grey)

    Sale priceFrom £8.33 Regular price£16.94
    MP Premium Putty Board (100 sheets)

    Car Fillers & Auto Body Fillers Frequently Asked Questions

    Can body filler be applied over paint?

    For a permanent and professional repair, the answer is no. Body filler must be applied directly to a properly prepared bare metal surface. Paint provides a weak, unstable foundation that will prevent the filler from bonding securely to the steel or aluminium underneath. Applying filler over paint will almost certainly lead to future peeling, bubbling, or cracking as the paint itself lifts away from the metal.

    The correct procedure is to always sand the area down to clean, bare metal. We recommend using 80-grit sandpaper to remove all paint and create a coarse, scratched surface that gives the filler a strong mechanical grip for maximum adhesion and a truly durable, long-lasting repair.

    Can body filler be applied over primer?

    Body filler should not be applied over primer. The correct and essential order of operations for a lasting repair is Metal > Body Filler > Primer > Paint.

    Think of it this way: the filler’s job is to shape the repair on the bare metal, while the primer’s job is to seal the porous filler and the surrounding metal, creating a perfect, non-absorbent surface for the topcoat of paint to adhere to. Applying filler on top of primer reverses this process, creating a weak foundation. For tiny pinholes or minor scratches in the primer itself, a very thin layer of glazing putty is the correct product, but for all standard shaping and dent repair, the filler must go on the bare metal first.

    How do I prevent pinholes when applying car filler?

    Pinholes are usually caused by trapped air or overworking the material. To minimise this, mix your filler thoroughly but carefully to avoid whipping air into the paste. When applying the product, use firm pressure with your spreader to ensure it is pressed fully into the surface. If you do encounter minor pinholes, a thin layer of finishing auto putty filler will easily bridge these imperfections before you apply your primer.

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