Fast-Repair Patching Mortar - Brick, Stone, & Concrete
Fast-Repair Patching Mortar - Brick, Stone, & ConcreteNot sure of the color? Pick the Quart – Sample & Small Project Size to test it at home before the full order.
Couldn't load pickup availability
Not sure which to pick?
Not sure which to pick?
Tell us about your project and the year your home was built, and we'll suggest a good place to start. Ask us here.
Pick Fast-Repair for steps and similar high-wear brick, stone or concrete masonry, where a patch needs to set in minutes.
| Product | Best for |
|---|---|
| Fast-Repair (this one) | Steps and similar high-wear masonry areas; sets in minutes |
| High Strength Concrete Patch | Concrete flatwork repair, gray or buff |
| High Build (lime) | Soft, breathable patches on historic walls, not steps or flatwork |
Concrete flatwork? Use High Strength Concrete Patch. Historic wall that needs a breathable lime repair? Use High Build.
- Fastest patch in our lineup - begins setting in minutes.
- Thick or thin - 1/2 in. to 6 in., with multiple lifts in a short time.
- Made for steps and high-wear areas - plus vertical and overhead repairs.
- Five colors - Light Buff, Dark Buff, Dark Red, Gray or Natural Off-White/Gray.
How the job goes
- 1. Prepare. Clean the surface and dampen it with water.
- 2. Mix small. Mix Fast-Repair with the amount of water required for a workable consistency, only what you can use in a few minutes; don't re-temper.
- 3. Place and finish. Trowel it on and sponge, tool or brush as it sets.
Sizes
- Quart (sample and small projects)
- Gallon (standard size)
Safety: wear gloves and eye protection when mixing and handling.
More about Fast-Repair
Some repairs can't wait for a slow cure: a chipped step, a broken brick edge, a spalled patch of concrete. Fast-Repair is a single-component mortar that begins setting within minutes, so you can patch, shape and move on.
Clean and dampen the surface, then add water and mix only as much as you can use in a few minutes. Don't add more water once it starts to stiffen. Place it with a trowel from 1/2 inch up to 6 inches thick, and add further lifts in a short time, scarifying each one so the next keys in. We recommend working when it's above 40°F, and protecting fresh work from freezing while it cures.
As it sets you can sponge, tool, brush, carve or texture-stamp the surface to match what's around it, or cast it into shapes and release it quickly. Water-based stain or paint, such as our Masonry Stain, can go on after 1 to 4 hours. It is not for thin overlays.
Fast-Repair is the patch to use on steps and other high-wear masonry, where our pure lime patches are generally too soft. For concrete flatwork, use High Strength Concrete Patch. For soft or historic masonry where breathability matters most, High Build lime is the gentler choice.
Share

Let customers speak for us
from 202 reviewsWe are using this mortar for our stone wall restoration project, and so far we are very happy with the results. The mortar is easy to work with, and the color blends nicely with the existing stonework. Good quality product!
After visiting the shop and talking to the team i got the right mortar to repoint my stone foundation and brick work with powered dyes. The softer and natural tone compared to using bigbox type N grey mortar product keeps the integrity of my 110yr home without looking like a bad diy patch job.
Came out beautiful and better than I had hoped
Shipped quickly. Arrived quickly. It mixed easily and adhered to my spalling bricks. So far so good.
The perfect mortar for 126 year old bricks (granite boulder and brick foundation built in 1900). Very happy with the mortar and clear instructions. Thank you ProMason!
Worked perfectly. Stain changed color of existing brick to the tone I was expecting giving it new life and blends with other new finishes.
I haven't had a chance to mix and use the mortar yet. However, the customer service is great. They immediately sent a replacement package of colorant since the original had leaked.
Our project turned out wonderful! What an amazing difference. It completely changed the look of the house!!
Easier to apply than I anticipated.
My first time staining brick and I was nervous on how it might turn out because I was going from dark brown tone bricks to gray tone (before and after photo submitted)Blended my own color combo and It looks amazing.
The stain covers well and a quart did a good amount of surface area. The perfect shade was achieved by mixing 2 colors. It looks great and is a nice brick border update!
The masonry sealer worked great. It was easy to apply and dried perfectly.
So far, so good. It will take time.
I just tried the mortar out. Need to learn a little more about using it as what I applies turned white. Yes it was sunny and hot. I tried keeping it spritzed and ended up shading the work with tarps, but too late. I’ll try again next week since I see a cloudy day in the forecast. Marie
We took down the Wood pan line in our old home. Built in 1880. All the room is red brick. Except for this one spot that it looks like they ran out. Using pro Mason stains, I was able to make coordinate better with the rest of the room. Very happy with the results! It would have been impossible to achieve without being able to dilute and combine the stains to make multiple colors to match the variants in the original bricks.
Working out great so far