For Exterior

Masonry Filler


Our Weatherproof Smooth Masonry Filler’s long lasting formula utilises water and mould resistant ingredients to create a high performance, exterior filler which will not shrink or crack. It is manufactured using fine fillers and resins to provide a smoother consistency for easy application!

  • Water and mould resistant
  • Touch dry in 1-2 hours
  • Easy to sand for a smooth finish
  • Free applicator included
  • Fills holes up to 20mm
  • Won’t shrink or crack
  • Mould and water resistant
  • Touch dry in 1-2 hours
  • Easy to sand for a smoother finish
Can be used on the following surfaces
  • Masonry
  • Brick
  • Interior & Exterior stone & concrete
    Interior & Exterior stone & concrete

1 colour available including:


How do I use it?

Number of coats

1 coat for 20mm gaps, more coats needed if gap is deeper


For holes up to 20mm deep


Comes with a free applicator

How to use our Smooth Masonry Filler

Before you start

Ensure surface and cracks are clean, dry and free from dust, grease and other contamination using our Masonry Fungicidal Wash.


Pack the filler well into the area of repair, ensuring the filler is slightly proud of the surface being filled. For deeper repairs above 20mm, build the filler up in layers, ensuring the filler has dried between applications. Smooth over filler with the Ronseal applicator or a wet knife prior to drying. If necessary, sand to a smooth finish once dried hard. Avoid the inhalation of dust and wear a suitable face mask when sanding. Drying time approximately 1-2 hours depending on size and depth of hole. Cold and damp conditions may extend dry time.


To prevent product from drying out, ensure the plastic film is pushed firmly onto the surface of the filler and lid is tightly closed. Tools should be washed in warm water immediately after use. Remove excess product from the tools prior to cleaning. Store away from areas of extreme temperatures and protect from frost.


Technical Specification


Suitable for use outdoors on either masonry, concrete or brickwork


Fills holes 20mm deep

Dry time: 1-2 hours
Number of coats: 1
Colours: Grey
Finish: Smooth

Apply with free applicator

Sizes: 1.2kg & 500g
VOC: Minimal