From wood to masonry: How fillers can be used for a wide range of exterior repairs
July 2025

With better weather upon us, and 21st June marking the official first day of summer, trade professionals across the country will no doubt find themselves taking on more and more work outdoors, as home and business owners look to smarten up the exterior of their properties.

Exposed to the elements, whether it’s wood or masonry, exterior surfaces can take a beating. So, work typically involves repair and restoration. And fillers can play a big role in carrying out these works. Far from just filling holes, fillers can be used to shape and repair, skim and smooth entire surfaces and even be used to tackle more tricky jobs, like damp or reoccurring cracks.

Whilst being able to resolve the many different problems faced on exteriors, fillers also respond to the way a professional prefers to work, as well as to assist in creating the ideal finish that’s needed. For example, they can come in different colours, produce different levels of finish and are available in either powder or ready to use form.

Toupret understands all these different requirements, and offers the largest range of exterior fillers on the market, as well as products to assist in preparation and problem surfaces, and for exterior wood, ensuring that professionals can choose the right filler for the job.

For filling and repair work, Toupret offers three exterior powder products and a lightweight ready to use filler. And for wood, there’s a powder or a ready to use product, available in a white, off-white or natural wood colour.

The powder products are perfect for shaping and repairing broken or damaged wood and masonry, such as window ledges or decorative features, all without the need for formwork. Simply build up the rough shape, leave it to set, and then, after about an hour, cut away the excess and neaten it up. The beauty of the powder products is that they can also fill to any depth, though they do have their own distinct features too. For example, Masonry Repair Filler is grey in colour and can be applied to damp surfaces. Rock Solid Repair Filler is white in colour and rich is resin, giving it the added strength required for more hard-wearing repairs. Tough Multi-Filler is strong, but easy to sand. And with a 40-minute working time, it can also be used for localised skimming.

Wood Repair Filler can be used in much the same way as a two-part filler, but with a much longer working time of 40 minutes, a choice of colour and no fiddly or nasty-smelling hardener. It’s also ready to paint in just 3 hours.

For general filling, a ready mixed product may be the preferred option, with Wood Filler available in both off-white and natural wood, capable of filling to a depth of 10mm, and Quick Fill being a preferred choice for masonry surfaces; with no depth limit, it’s light grey and ready to paint in just 1 hour.

Skimming and smoothing fillers can produce a clean, high-quality finish and can be a lifesaver when tackling render repair. For example, Toupret’s Skimcoat Filler is available in both powder and ready to use form, giving you either 6 hours or an unlimited working time to smooth over wide areas and patch up localised, damaged render without needing to first remove it. Where the finish really needs to make an impact, a product like Fine Finish Wood Filler can lift the appearance of paintwork, bringing a vibrant mirror-like finish to doors, windows and decorative features.

Finally, showcasing the versatility and problem-solving solution in fillers, there are products designed to alleviate the difficulty of trickier jobs. Fill-Flex is a flexible filler, compatible with all other Toupret fillers, that moves with the substrate to resist cracking and tackle moving surfaces, a common issue in render. Similarly, Skim-Flex is a flexible smoothing filler for levelling and finishing surfaces that is again designed to move with the substrate to resist cracking.