RENO C950 QUICK
KEY BENEFITS
- Versatile application up to 50mm
- Moisture tolerance
- 1-5mm vertical skimcoat on walls and risers
- Available on 10 or 25 kg
CHARACTERISTICS
- Color: grey
- Mechanical performance: C30/F6
- Coverage: 1.6 kg/mm/m²
- Application thickness: 1-50mm
- Working time: approx. 15min
- Walk on time: after 45min
- Shelf life: 9 months
- Curing time:
- Tiles: 1 to 3 hours
- PVC, carpet: 2 to 5 hours
- Parquet, rubber, floor paint: 12 to 24 hours
Versatile screed and concrete repair applications
This screed repair mortar is suitable for a wide range of substrates and applications. It can be applied from 1 mm up to 50 mm in a single layer, making it appropriate for both surface corrections and deeper repairs.
Typical uses include:
- Filling holes and damaged areas
- Reprofiling stairs
- Creating or reshaping slopes
- Repairing uneven concrete and screeds
Its versatility ensures consistent results across different repair scenarios.
Wall repair mortar for vertical applications
RENO C950 QUICK also functions as a wall repair mortar, allowing vertical applications between 1–5 mm for skim coating walls and risers. This makes it suitable for both horizontal and vertical repair work within the same system.
Concrete repair product for multiple substrates
As a multi-purpose concrete repair product, it is compatible with a broad range of substrates, including:
- Cementitious screeds and concrete
- Calcium sulphate screeds
- Wooden boards
- Sanded asphalt screeds
- Magnesia and xylolite screeds
- Existing tiles, adhesive residues and painted surfaces
It is also suitable for use over heated concrete and screeds, supporting modern construction requirements.
Application process: RENO C950 QUICK
Quick Application Steps (On-Site Guide)
- Prepare: Check substrate is firm, clean, dry and suitably primed
- Mix: Combine 5–6 L water with 25 kg bag, mix to a smooth mortar
- Apply: Install between 1–50 mm in a single pass
- Wait: Allow foot traffic after approximately 45 minutes
- Cover: Apply finishes from 1 hour up to 24 hours depending on system
1. Subfloor preparation
Surface preparation underpins system performance:
- Ensure substrates are structurally stable, dry and free from grease, dust or contaminants
- Eliminate weak surface layers, coatings, adhesives and laitance by mechanical means
- Remove loose particles thoroughly using industrial vacuum equipment
- Confirm tiles are well bonded; repair or remove defective areas
- Smooth or impervious surfaces must be mechanically abraded and cleaned
- Repair cracks and joints with compatible systems before application
- Apply a suitable primer in accordance with substrate requirements
All substrates should comply with relevant standards and site conditions prior to installation.
2. Mixing
- Measure 5 to 6 litres of clean water into a mixing container
- Add the powder gradually while mixing with a mechanical paddle
- Mix continuously for around 2 minutes until a consistent, lump-free blend is formed
- No standing time is required before use
- Pot life: approximately 15–20 minutes
Important: Excess water addition will reduce strength and compromise performance.
3. Application
- Apply in one layer from 1 mm up to 50 mm thickness
- Deposit the material onto the prepared area and distribute evenly with a trowel
- Press firmly into repairs, voids or damaged zones to ensure full contact
- Finish and refine the surface within 10–15 minutes before stiffening occurs
- For greater depths, bulk out with suitable aggregate where required
- Additional layers can be applied once the initial application has cured, with re-priming if necessary
Suitable for repairs, reprofiling and forming gradients on both floors and walls.
4. Drying & curing
- Working time: ~15–20 minutes
- Walk-on time: ~45 minutes
Protect freshly applied material from rapid drying caused by airflow or direct sunlight.
Typical covering times:
- Ceramic tiles: ~1–3 hours
- PVC / carpet: ~2–5 hours
- Wood, rubber, coatings: ~12–24 hours
5. Underfloor heating
- Switch off heating systems 48 hours before, during, and for at least 48 hours after installation
- Gradually recommission heating once the material has cured
Common mistakes to avoid
- Overdosing water, leading to reduced mechanical performance
- Mixing excessive quantities despite limited working time (~15–20 minutes)
- Applying onto contaminated or inadequately prepared substrates
- Skipping primer selection for difficult or non-absorbent surfaces
- Exceeding thickness limits without using aggregate
- Applying outside recommended temperature range (+5°C to +30°C)
- Allowing rapid moisture loss due to draughts or solar exposure
A versatile concrete, floor and wall repair mortar
Combining the functionality of a concrete repair mortar, screed repair mortar, and wall repair mortar, RENO C950 QUICK offers a comprehensive solution for professional repair work across a wide range of substrates and conditions.
Frequently Asked Questions
Damaged mortar, holes and surface imperfections can be repaired with different products depending on the repair depth and finish required. RENO C715 EASY FLASH is described as a rapid drying patching and smoothing compound for internal repairs on walls and floors. RENO G905 ALPHA ST is recommended for repair, patching and smoothing surface imperfections. RENO C950 QUICK and RENO C920 ST are recommended for deep or large repairs in a single layer.
Application thickness varies by product. RENO C715 EASY FLASH is suitable from feather edge up to 15 mm. RENO G905 ALPHA ST is 1 to 10 mm. RENO C950 QUICK is 1 to 50 mm in one layer. RENO C920 ST is 1 to 50 mm unextended and 50 to 100 mm extended. RENO C970 PLUS is 1 to 100 mm.
For repairing damaged areas or filling holes, use a repair mortar such as RENO C950 QUICK or RENO C920 ST. These products are suitable for applications from approximately 1 to 50 mm (or up to 100 mm depending on the product and extension), depending on substrate condition and preparation.
Repair mortar is applied onto a prepared surface using a trowel. Pour or place the mixed mortar into the damaged area, spread evenly to the desired thickness, and smooth the surface before the material starts to set. Products such as RENO C950 QUICK and RENO C920 ST allow shaping, filling and reprofiling of surfaces.
RENO C950 QUICK is a fast-setting repair mortar suitable for applications up to 50 mm and is walkable after about 45 minutes. RENO C920 ST can be applied up to 100 mm when extended and has a faster walk-on time of about 30 minutes. RENO C920 ST is better suited for deeper or more demanding repairs.
Holes and damaged areas can be filled with repair mortars according to the required build. RENO C950 QUICK is recommended for deep or large repairs in a single layer with an application thickness of 1 to 50 mm. RENO C920 ST is recommended for deep or large repairs with an application thickness of 1 to 50 mm unextended and 50 to 100 mm extended. For minor internal repairs and smoothing, RENO C715 EASY FLASH is a rapid drying patching and smoothing compound suitable from feather edge.
Repair mortars are used to restore damaged concrete or masonry surfaces. They provide strength, durability and a smooth finish, and allow professionals to fill cracks, level surfaces and reinforce structures.
Repair mortars can be used for stair repair, shaping slopes, chase filling, crack bridging and concrete repair. They can also be used for filling holes, reprofiling stairs, reshaping slopes and surface levelling, depending on product.
Repair mortars provide strength, durability and a smooth finish. In renovation, they are positioned to restore damaged surfaces and support long-lasting performance.
Repair mortars must be mixed with clean water using the ratios specified per product. RENO C950 QUICK uses 5 to 6 litres of water per 25 kg bag, RENO C920 ST uses 5.5 to 7 litres per 25 kg bag, and RENO G905 ALPHA ST uses 8 litres per 20 kg bag. Mix using an electric drill and paddle until a smooth, lump-free consistency is achieved.
Drying time depends on the product and thickness. RENO C950 QUICK is walkable after 45 minutes, with floor coverings from 1 to 24 hours depending on type. RENO C920 ST is walkable after 30 minutes, with coverings from 1 to 24 hours. RENO G905 ALPHA ST is walkable after 2 to 3 hours, with full curing from 24 hours depending on thickness.
Before installing floor coverings, damaged or uneven substrates can be repaired and smoothed with products selected to suit the defect. RENO G905 ALPHA ST is recommended for repair, patching and smoothing surface imperfections. RENO C715 EASY FLASH is recommended for patching and smoothing minor surface imperfections prior to installation of most floor coverings. RENO C950 QUICK and RENO C970 PLUS are recommended for deeper repairs, levelling, profiling or reshaping where higher build is needed.
Consumption depends on the product and thickness. RENO G905 ALPHA ST uses approximately 1.1 kg per mm per square metre. RENO C950 QUICK and RENO C920 ST use approximately 1.6 kg per mm per square metre. RENO C970 PLUS uses approximately 1.5 kg per mm per square metre.
A damaged subfloor can be repaired using repair mortars and reinforcement systems. RENO G905 ALPHA ST is suitable for patching and levelling imperfections. RENO C950 QUICK or RENO C920 ST can be used to fill holes, reshape surfaces and restore the subfloor. For weak subfloors, RENO U550 REINFORCE helps stabilise and distribute loads.
Walk-on time depends on the product. RENO P520 EASY is walkable after about 30 minutes. RENO C920 ST is walkable after about 30 minutes. RENO C950 QUICK is walkable after about 45 minutes. RENO G905 ALPHA ST is walkable after about 2 to 3 hours.
Drying time depends on the product used. RENO P520 EASY is walkable after about 30 minutes and cures in about 45 minutes. RENO E742 STRUCTURE cures in about 24 hours. RENO C950 QUICK is walkable after about 45 minutes, with floor covering possible within hours depending on the finish.
