Tetrion ‘Hard as Rock’ Masonry Repair Filler is a super tough, ready-mixed formula for all exterio...Tetrion ‘Hard as Rock’ Masonry Repair Filler is a super tough, ready-mixed formula for all exterior filling jobs. It is touch dry in 2 hours and accepts screws & bolts without shrinking or cracking. Suitable for multi-surface exterior application on plaster, stone, concrete, masonry, and wood. This water-based paste offers minimal sag and high strength, being polymer re-enforced and over-paintable. It can fill up to 10mm depth in one application. Ensure surfaces are dry and free of loose material before application. Work the tube well between fingers, then squeeze filler directly into the gap and tool flush with a wet spreader. For deeper gaps (>10mm), apply in layers, allowing the filler to dry between applications. Sand smooth when dry (surface dry in 4-6 hours). It can be overpainted once fully dry and cured (approx. 24 hours). For external use, over-paint with an oil-based paint. When over-painting with a water-based paint externally, prime with a suitable sealer first. After use, replace the cap to ensure the filler stays in good condition and store away from frost. Do not use in wet or damp conditions or on surfaces regularly under water. Do not sandwich between layers of paint and/or sealants.
This guide is for anyone using Tetrion 'Hard as Rock' Masonry Repair Filler to fill exterior gaps and repair surfaces. The primary benefit is its super-tough, ready-mixed formula that provides durable, long-lasting repairs. However, remember to avoid using it in wet or damp conditions for optimal performance.
All features
Model Part Number
TEF330
Brand
Tetrion
Extended Product Information
FAQs
How long does it take for the filler to dry?
The filler is touch dry in approximately 2 hours. Allow 4-6 hours for surface drying before sanding, and approximately 24 hours to fully dry and cure before over-painting.
Can I use this filler indoors?
Yes, but it is specifically designed for exterior use.
What surfaces can I use this on?
This filler is suitable for use on plaster, stone, concrete, masonry, and wood.
Can I apply this filler in wet conditions?
No, do not use in wet or damp conditions. Ensure the surface is completely dry before application.
How should I store the filler?
Replace the cap tightly after use. Store in a cool, dry place away from frost.
Can I use water-based paint over this filler?
Yes, but prime the surface with a suitable sealer before applying water-based paint for external use.
How deep can I fill in one application?
You can fill up to 10mm deep in one application. For deeper gaps, apply in layers, allowing each layer to dry.
Do I need to sand the filler?
Yes, sand the filler smooth when it is dry to achieve a professional finish.
Troubleshooting
Filler is not adhering to the surface.
Ensure the surface is clean, dry, and free of loose material. Consider lightly sanding the surface for better adhesion.
Filler is cracking after drying.
Ensure the filler is not applied too thickly in a single layer. For gaps deeper than 10mm, apply in layers, allowing each layer to dry completely.
Filler is taking longer than expected to dry.
Check the surrounding environmental conditions; ensure it's not damp or cold. Allow additional drying time if needed.
Difficulty in smoothing the filler.
Use a wet spreader to smooth the filler. Wetting the spreader will prevent the filler from sticking and allow for a smoother finish.
Pros and Cons
Pros
Ready-mixed for convenience and ease of use.
Suitable for a wide range of exterior surfaces.
Dries quickly, reducing project completion time.
Provides a strong and durable repair.
Can be easily overpainted to match existing surfaces.
Offers minimal sag during application
Cons
Not suitable for use in wet or damp conditions.
Requires application in layers for gaps deeper than 10mm.
External use with water-based paint requires priming.
Surface must be completely dry before application.
Cannot be used on surfaces regularly under water.
Setup, Compatibility & Care
Setup
Ensure the surface is completely dry and free of loose material before application.
Work the tube well between your fingers to ensure the filler is consistent.
Squeeze the filler directly into the gap or crack.
Tool the filler flush with a wet spreader.
Compatibility
Suitable for: Plaster, stone, concrete, masonry, and wood.
Over-painting: Compatible with oil-based paints for external use. For water-based paints, prime the surface first.
Care
Replace the cap tightly after use to prevent the filler from drying out.