DAP Ready-To-Use Concrete Patch 1 Gallon, Gray, Fiber Reinforced
What It Is For
- Filling holes, cracks, dents and chips in concrete and masonry.
- Repairing breaks and spalls where a surface has flaked or broken away.
- Rejoining broken pieces of concrete or brick.
- Tuck pointing masonry and brickwork with deteriorated joints.
- Feather edging, since it can be smoothed out to nothing at the edge.
The Limitation Printed in Capitals
DAP states it in capital letters, so we will repeat it plainly: do not use this as a skim coat. It is a patching compound for discrete repairs, not a resurfacer for spreading thinly across a whole slab. If you want to renew a worn surface over a large area, a cement based resurfacer is the product for that job and we stock one. Using a patch compound as a skim coat is how people end up with a floor that debonds in sheets.
Specifications
| Manufacturer name | DAP Ready-To-Use Concrete Patch |
| DAP item number | 31090 for the 1 gallon |
| Type | Latex emulsion compound with fibre reinforcement |
| Coverage | About 8 sq ft per gallon at 1/8 inch |
| Application thickness | 1/8 inch, maximum 1 inch depth |
| Layering | Build in 1/4 inch layers, with drying between layers over 1/2 inch |
| Set time | 3 to 5 hours at 1/4 inch depth |
| Full cure | 48 hours at 1/4 inch depth |
| Application temperature | 50 F to 90 F |
| VOC | 26 g/L |
| Solids | 79.6 percent |
| Shelf life | 12 months unopened |
| Colour | Gray |
| Compressive strength | Not published by DAP |
Where DAP Says Not to Use It
- Not as a skim coat. Discrete repairs only.
- Not for repairs deeper than 1 inch.
- Not on surfaces taking vehicle traffic.
- Not where there is prolonged water exposure or full submersion. That rules out pool and pond repairs.
Getting a Repair That Lasts
- Clean the repair out. Loose material left in the hole is what the patch will fail against.
- Do not thin it. It is formulated ready to use and thinning weakens it.
- For anything deeper than half an inch, build up in quarter inch layers and let each dry.
- Allow overnight drying for surface patching, and longer for deep fills.
- Work between 50 F and 90 F. Outside that range the latex will not form a proper film.
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