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SX Siroflex Mortar Repair Cement Buff is a 300ml ready-to-use, high-viscosity mortar paste designed for quick and durable masonry repairs. Its water-resistant formula adheres well to damp surfaces without primer, setting rock hard for professional-grade results. Ideal for small pointing jobs, it offers easy application and cleanup, making it a must-have for efficient, long-lasting repairs.






| ASIN | B0CN3LC8QM |
| Best Sellers Rank | 1,191 in DIY & Tools ( See Top 100 in DIY & Tools ) 4 in Cement |
| Brand | Siroflex |
| Colour | Buff |
| Compatible Material | Concrete |
| Container Type | Cartridge |
| Customer Reviews | 4.1 out of 5 stars 1,351 Reviews |
| Included Components | 1 x SX Buff Mortar Repair Cement 300ml |
| Item Form | Paste |
| Item Package Quantity | 1 |
| Item Type Name | Siroflex Mortar Repair Cement Buff 300ml |
| Item Volume | 300 Millilitres |
| Item form | Paste |
| Manufacturer | Siroflex Lte |
| Manufacturer Part Number | SXMORTRC300BU |
| Material | Mortar, Cement |
| Model Number | SXMORTRC300BU |
| Number of Pieces | 1 |
| Other Special Features of the Product | Strong, Water Resistant |
| Special feature | Strong, Water Resistant |
| Specific Uses For Product | Masonry Repair |
| Specific uses for product | Masonry Repair |
| Unit Count | 300.0 millilitre |
| Viscosity Level | High |
| Water Resistance Level | Water Resistant |
D**K
Works well and easy to apply
Some other customers in the reviews said that the contents of the tube didn't come out through the nozzle very well. I didn't have that problem, it came out okay, and it's nice and easy to apply and it's sticks well and it sets rock hard so I found it very good
M**N
Good but runs out quickly
This is easy to use and saves time trying to get right mixture doing it yourself. Drawback we had to use rechargeable gun as thick. Biggest issue is it doesn’t cover much area. I was doing between my slabs and one tube only did two and a half so beware how much you need.
C**R
Good idea but tricky to use
The idea is good and once it dries is solid and good! But application is a bit of a pain, not cheap either
B**N
Easy to use and solid quality, but colour match is critical
I bought this SX Trade Strength mortar repair to do some repointing work around my brick house. Application was easy and the mortar itself feels good quality once applied. It sets well and is ideal for small repair jobs where you don’t want to mix up a full batch of mortar. The main thing to be aware of is the colour. It’s quite a light grey, and in my case it didn’t match the existing mortar on my house. The repair stands out more than I’d like, and I’ll need to find a darker option in the future to blend it in better. Overall, the quality of the product itself emphasizes reliability, but matching the existing mortar colour is essential for cosmetic repairs. Good for structural or functional fixes, but be careful if appearance matters.
D**N
Wouldn’t buy again
I was disappointed with this - it did not come out of the gun easily (in fact, it broke the gun, I had to apply so much pressure). It also didn’t stay where I applied it, it sort of dragged behind the tube as I moved along, meaning I had to use my finger to keep it where I wanted it. It’s a nice idea and would have been great if it had worked but I’m grateful I only bought two tubes as it was ultimately rubbish and a waste of money.
R**M
Good price and product for small repairs.
I bought two tubes, it was easy to use although it was a little hard to squeeze out at first. Before starting you need to ensure any loose material is cleared out of the gaps to be filled otherwise the filler can fall out. The colour is a light grey which blended well with my cement which is around 30yrs old, I’m happy with the results. Like the Bruce Willis film it Dries Hard. I know!
C**J
Just OK
Bought to fill drill holes in brick work, with the help of some brick dust to match the colour. First half of tube came out ok but stiffened up significantly towards the end, so much so I had to cut it open.
D**E
It's does what it says
It does what's it's meant to. Used it to fill some holes in a new concrete floor. Obviously the guys who laid it were partially sighted. Worked a treat, just follow the instructions.
Trustpilot
3 days ago
1 month ago