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Siroflex SX Trade Strength Mortar Repair Cement: Quick repairs for pointing and damaged masonry

SX Trade Strength Cement Grey Mortar Repair Cement 300ml - Ready to use repair mortar for Pointing jobs & Damaged Masonry Joints - Adheres without primer on Damp Surfaces - Interior & Exterior
4.6
[Ready-to-Use Mortar]  Pre-mixed repair mortar eliminates mixing—ideal for small pointing jobs and saves time.
[No Primer Needed]  Provides strong adhesion to most surfaces without primer, simplifying surface preparation.
[Easy Cartridge Application]  Pre-cut V-nozzle fits standard guns; precise control for neat, professional repairs.
[Temperature & Curing]  Use above 5°C; apply in dry conditions and keep surface dry for at least 5 hours.
[Easy Water Cleanup]  Tools and hands rinse clean with water for fast, convenient cleanup.
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Home improvement mortar aimed at fast pointing and small masonry repairs, supplied ready to use for convenience. Neat, durable patches are achievable even when time is tight, with Siroflex SX Trade Strength Mortar Repair Cement. Is a 300ml cartridge the right size for the tasks you have lined up?

⚡ At a Glance
  • Application Ease: Pre-cut V-notched nozzle, best applied with a quality applicator gun
  • Best for: Small pointing jobs and DIY masonry patching
  • Not ideal for: Major structural repairs or extensive re-pointing projects

Ready-to-use 300ml mortar for interior and exterior repairs. Cartridge dispenses through a pre-cut V-notch nozzle and requires the surface to remain dry for at least five hours after application.


Quick pointing repairs, with ready-to-use mortar

Pre-mixed 300ml cartridge removes the need to mix sand and cement on site; cut the cartridge seal and attach the pre-cut V-notched nozzle for controlled dispensing. Material can be stiff from the cartridge so a high-quality applicator gun is recommended for smooth, even application.

Saves preparation time and reduces mess, ideal for small patches where mixing would be overkill and speed matters.

Strong bond on damp substrates, with no-primer adhesion

Formulation is designed to adhere to most surfaces without a primer and is stated to bond on damp surfaces. Both the product and the substrate should be above 5°C for optimal performance.

Handy when surfaces cannot be perfectly dry before repair, while the temperature requirement means avoid use in colder conditions.

Easy application and cleanup, with water-washable finish

Tools and hands clean up easily with water, removing the need for solvents. Follow application guidance to apply in dry weather and keep the surface dry for at least five hours to allow proper curing.

Keeps site tidy and reduces post-job cleaning time, while water cleanup is safer and simpler for DIYers and tradespeople.

✨ The 4 Key Reasons for Siroflex SX Trade Strength Mortar Repair Cement
  1. Ready-mixed cartridge – Saves time by eliminating site mixing and measuring.
  2. No primer required – Bonds to most surfaces, useful when priming is impractical.
  3. Generous 300ml tube – Covers several small joints without needing multiple packs.
  4. Water cleanup – Tools and hands wash clean with water, avoiding solvents.
📋 Technical Details at a Glance
  • Category: Home Improvement
  • Brand: Siroflex
  • Product type: Mortar repair cement
  • Colour: Grey
  • Capacity: 300ml cartridge
❓ Frequently Asked Questions

Q: Can it be applied to damp surfaces?

A: Yes, the formulation is described as adhering without primer to most surfaces, including damp substrates, but application should still be carried out in dry weather and the surface must be kept dry for at least five hours after application.

Q: Do I need to use a primer first?

A: No primer is required for most surfaces, the material is intended to give good adhesion without a separate priming step.

Q: How should the mortar be applied and cleaned up?

A: Cut the cartridge seal and attach the pre-cut V-notched nozzle, using a high-quality applicator gun as the material can be stiff; tools and hands clean up easily with water.

🏆 Our Verdict

Suitable for DIYers and tradespeople tackling small pointing jobs and damaged masonry where a quick, neat repair is needed. Ready-to-use formulation that bonds without primer and cleans up with water makes repairs faster and less messy. Offers good value and practical long-term results due to quick hardening and a generous 300ml cartridge.