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To perfect the building or construction of a dwelling requires a perfect finish. The best way to achieve a perfect finish is to ensure all holes, gaps and cracks are filled with products that are suited to a specific task.

Bostik fillers are specifically designed to help you achieve the best possible finish that will eliminate unsightly gaps or appearances between building materials, eliminate draughts to create a more energy efficient dwelling as well as prevent the invasion of insects and pests.

Our products include solutions for interior and exterior applications for domestic and commercial applications.

Product lines featured in our fillers range include:

  • Flexible Fillers
  • Polyurethane Foam Fillers
  • Fire Rated Polyurethane Foam Fillers

Our fillers are created using high quality materials to deliver a range of products that can fill holes or gaps in even the most challenging places and environments. Regardless of task or construction at hand, our products are developed to achieve the best finish possible


Changes in weather and temperature can cause surfaces to naturally expand and contract which causes a variation in the size of a gap. This is particularly common around window and door frames, skirting boards and architraves.

Bostik flexible fillers are specifically designed to expand and contract between surfaces while still ensuring the gap or crack remains sealed at all times. They are extremely versatile and can be used in interior and exterior applications. Once completely cured, the filler can be painted over with an acrylic paint of your choice. Depending on the flexible filler you have selected, you can choose to leave the filler as it is due to the popular colour choices available in Bostik Fill-A-Gap® or if you are using Bostik Tradesman's Filler, you can sand it smooth and paint it over for a smooth finish.


Large, irregular or hard to reach gaps or cavities can cause a range of problems around a dwelling. 

Bostik polyurethane foam fillers are the perfect solution to quickly and easily reduce noise, dust and draughts as well as block access to cavities by rodents and other pests that can quickly invade an open space. If fire rated protection is required; Bostik have a range of fire rated polyurethane foam fillers.

Fillers are great insulators against the weather and protect dwellings from the heat and cold while bonding to a variety of building materials to ensure large gaps are filled in the most difficult to reach locations. Once cured, it can be sanded to a smooth finish and painted over for a discrete appearance.


Cavities or gaps in building materials and structures pose a significant fire, smoke and gas risk that can take hold of a dwelling in mere seconds. Having the right level of protection not only reduces the rate at which fire can take hold but also gives the occupants a greater chance to escape to safety.

Bostik fire rated polyurethane foams have been formulated to be fire retardant and seal connections between walls, floors, ceilings, partition walls, windows and door frames against smoke and gas. This ensures that all Bostik fire rated polyurethane foam fillers meet AS1530.4-2014 (Fire resistance of elements of construction). If your structure does not require a fire rated seal; you can discover more from the Bostik range of polyurethane foam fillers.

Bostik fire rated polyurethane foam fillers have the benefits of regular polyurethane foam fillers with the addition of fire rated protection for up to 4 hours as well as acting as a smoke and gas retardant sealer. Once cured, it can be sanded smooth and painted over to provide the dwelling with discreet fire protection all year round.

For more information, call us today on 0508 222 777 or email our team here.



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