Exterior Surfaces
Can I apply exterior filler onto damp walls?

MASONRY REPAIR FILLER is very good for deep masonry repairs, can be shaped, and can be applied to damp masonry. You can use it to fill big defects in the substrate and you can also skim with it. It's paintable after 48 to 72 hours.

Can I skim with exterior filler?

Yes! Our EXTERIOR SKIMCOAT FILLER comes in powder or ready mixed version. It is designed for smoothing old or damaged render and can also be used to skim over masonry locally.

Rock Solid Repair Filler vs. Masonry Repair Filler: Which should I use?

For bare masonry, damp or dry, apply MASONRY REPAIR FILLER. For all other dry substrates, including glass and glazed tiles, use ROCK SOLID REPAIR FILLER.
Due to the strong properties of ROCK SOLID REPAIR FILLER, it will need to be shaped and sanded before it sets. MASONRY REPAIR FILLER, on the other hand, can be sanded with ease.
If you’re looking to paint over the filler, consider that MASONRY REPAIR FILLER is cement-based and therefore requires pH levels to drop back before you are able to do so.
This will take between 48 and 72 hours. ROCK SOLID REPAIR FILLER can be painted over in 24 hours, regardless of the depth to which it has been applied. 


We've designed our skimcoat products for smoothing over large areas of masonry and render, allowing for traditional render repairs and eliminating the need to completely strip back old render. It’s designed to be applied thinly (up to 5mm). For deeper filling and repairs, use one of our exterior filling products first.

How long does exterior filler take to dry?

We state a drying time of at least 24 hours on all our exterior products to be absolutely sure that they’re ready for the next stage of your process in unpredictable weather. This can of course be quicker in the right conditions.

Interior Surfaces
Can INTERIOR FILLER be used on wood as well?

INTERIOR FILLER isn’t suitable for wood but WOOD REPAIR FILLER will be perfect. You will be able to paint or stain it in 3 hours.

When skimming, my filler sagged, didn’t cover well and didn’t dry as quickly as it should. What’s going wrong?

When using powder fillers, make sure you are using the correct mixing rate of water to powder. If you use too much water the filler will be ‘loose’. The mixing rate is stated on the packaging. For a smooth mix, don’t forget to add the powder to the water. Not the other way round!

Do you have a skim filler that can be applied with a roller?

Yes, all of our skimming products can be applied with a roller assuming you will smooth over with a trowel or knife afterwards. This is important because some fillers may crack if the coat is too thick.

What should I use for hairline cracks?

Our FINE SURFACE FILLER is perfect for this. Rake the crack out to open it up a bit before filling.

Joint Skim and Fill
What’s the difference between JOINT, SKIM & FILL: QUICK DRY and PATCH & REPAIR FILLER: QUICK DRY?

There are a couple of important differences between these products, which are designed to complement each other. JOINT SKIM & FILL is designed for doing large areas of jointing and skimming, PATCH & REPAIR for smaller holes and cracks. First, the adhesion on JOINT, SKIM & FILL powder conforms to European Standard EN 13963 which concerns reaction to fire and flexural strength for jointing products. For this reason, we proudly bear the CE logo on the jointing products in the range. This is the standard that’s required for commercial jointing, so you can be sure the product will stand up to the job. Secondly, PATCH & REPAIR powder is a bit harder than JOINT SKIM & FILL  powder when dry. Because JOINT SKIM & FILL is primarily designed for smoothing over larger surface areas, the formula helps to make the job of sanding over large areas easier and more comfortable! But sanding is still easy when using PATCH & REPAIR to fill smaller holes and cracks.

What is the difference between JOINT & SKIM READY TO USE and RENOVATION SKIMCOAT?

The JOINT & SKIM product is very fine and is designed mainly for taping and jointing and fine skimming on plasterboard. The RENOVATION SKIMCOAT is especially good for levelling surfaces and thicker applications, such as covering textures (but can also happily be used for taping and jointing).

Can Joint, Skim and Fill skim cover Artex® and have a long-lasting, hard finish?

Our Joint, Skim and Fill ready mixed and powder products will both do the job depending on the depth of the Artex. If it’s been de-nibbed, either would be fine and will be just as hard as plaster, dry wall and other fillers.

How does this compare to plaster?

We love questions like this! We’re finding that more and more decorators, drywall specialists and builders are choosing to use fillers (such as our Joint, Skim & Fill range, for example!) as an alternative to plastering for some jobs. Not only do skimming fillers give a durable finish, but they’re breathable, don’t need to be sealed before decorating and dry white. They’re also very convenient to work with, being really easy to spread and with an open time of 45 minutes (rather than about 15 with plaster) yet they are dry in hours, rather than days, and are easy to sand for a perfect finish. Better and faster – win win!

Preparation of the substrate
When you say no need to spot prime and will not flash, is that for all paints regardless of sheen level?

Yes. Any paint is fine. Just make sure the filler is completely dry before you start painting.

Do your fillers still allow the walls to breathe if a large area is covered?

Yes, they do. Our fillers are moisture vapour-permeable so your wall will be able to breathe, even if a large area is covered.

Can I mix powder filler with paint?

For best results, we do not recommend mixing our fillers with any other additives. 

Are Toupret products suitable for use on lime render?

Yes, all our products are suitable for use on lime render, and we advise undercoating before filling. For individual application specifications, refer to the product technical data sheet.

Which filler should I use for levelling the surface of an exterior wall made of various materials and locally covered with paint?

First of all, make sure that the paint on the base substrate is not a plastic-based coating. This can’t be covered by any filler and needs to be stripped beforehand. Then, after scraping away non-cohesive areas and checking the moisture rate of your substrate, you can apply ROCK SOLID REPAIR FILLER or TOUGH MULTI-FILLER to fill holes, cracks and various gaps. Once your localised filling is dry, you can apply EXTERIOR SKIMCOAT or TOUGH MULTI-FILLER as a skim coat (up to 5mm) to achieve a really smooth and even wall. Once these filler coats are dry, you can apply your final coat.

Can I mix filler with paint or tint?

We advise against putting any additives into our products because this may affect the performance or the chemical composition.

Do your fillers set chemically or atmospherically?

Our powder fillers set chemically and then dry atmospherically. In fact, all powder fillers containing plaster or cement work this way. The plaster or cement reacts with the water first to set to a solid crystal lattice. That structure is then fixed while the water evaporates until it becomes fully dry. Our ready-mixed fillers dry atmospherically - they lose moisture through the substrate and in the air. This is because there is no chemical reaction in this formula. Again, this is the case for most ready-mixed fillers.

Problem Surfaces
Which filler would you recommend to treat damp walls?

ANTI-DAMP RENDER is treatment filler dedicated to interior of exterior damp masonry. It applies on raw substrates, either into light coats by brush or into thick coats with a trowel or a blade. It enables to level the irregularities. It applies into a crisscross pattern. Whatever the application tools (brush or trowel or blade) a coat thickness of minimum 2 mm is required. ANTI-DAMP RENDER only applies on raw and non-dripping substrates [refer to the technical datasheet]. It will stand as a barrier against the residual water contained in your substrate while enabling the water vapour evaporation thanks to its high water vapour permeability. This is the reason why it is absolutely necessary to ensure that the over coating paint should be water vapour permeable too.

What is the maximum depth for Anti-Damp Render?

ANTI-DAMP RENDER is best applied to damp substrates to a depth of up to 1cm. Any deeper, and the breathable barrier created by the filler may be compromised, blocking the water flow to such an extent that it may force its way through the filler, causing it to peel off.

Is ANTI DAMP RENDER a filler or a render?

It’s a filler with high cement content that does a rendering job on masonry substrates. The added ingredients provide anti-damp properties that allow it to act as a barrier to water penetration while still letting the substrate breathe. ANTI-DAMP RENDER is best applied to damp substrates to a depth of up to 1cm. Any deeper, and the breathable barrier created by the filler may be compromised.

Can you apply a finishing filler over FILL FLEX?

Yes, it’s a really good idea to finish with either SKIM FLEX (flexible skim-coat) or FINE SURFACE FILLER. All Toupret products will adhere to FILL FLEX once it is fully dried.

Where to buy ?
Can I buy direct from Toupret?

Unfortunately, we don’t sell direct, but you can find your nearest distributer on the Find a Distributer page of our website. Or if you’d like to Contact Us we can ask your local Toupret sales/technical representative to get in touch.

Does Toupret have any stockists in Ireland?

We distribute via Relay Global in Ireland. You can find stockists on their website.

Can you send me a sample?

Unfortunately, we can’t offer free samples, but if you would like your local sales rep to contact you for some product advice or to direct you to a local stockist, please Contact Us.

Wood Surfaces
How does WOOD REPAIR FILLER perform versus a 2-part wood filler?

There are several advantages of using our WOOD REPAIR FILLER over a 2-part wood filler. It has a longer working time of around 30 minutes, great for perfecting tricky fill and repair jobs without rushing. It doesn’t flash, is very easy to sand, yet it’s as durable as a 2-part and can take drilling & screwing. It has almost no odour, so great for using on jobs indoors as well as outside. And you can get your tools clean afterwards with just water, rather than using solvents.