fast set
fast set

Complete your concrete project in just hours! Use SAKRETE Fast Set, a rapid-setting, high quality, concrete mix designed for same-day construction. Available in 30 KG bags. Go with SAKRETE, The Pro’s Choice since 1936.

Product Codes: 11507130, 21507130

• Premium quality for consistent strength and durability
• Ideal for new concrete construction projects, concrete overlays and repairs
• Construct footings, sidewalks, slabs, steps and patios; set deck posts, fence posts and poles
• Designed for applications requiring a thickness of more than 2 inches (5 cm)
• Ideal for cold weather application (for temperatures above -5 °C or 23 °F), as well as Spring or Fall projects
• Open to foot traffic in approximately 3 hours


• Fast-setting
• Ideal for cold weather applications
• Walk-on in hours


For new concrete construction projects, concrete overlays and concrete repairs. Use to construct footings, sidewalks, slabs, step and patios, or to set deck posts, fence posts and poles.


Mix and substrate temperatures should be maintained between 5 ºC and 30 ºC (40 ºF and 86 ºF) for at least 24 hours prior to and 48 hours after.

Mixing: Empty contents of bag into mortar box, wheelbarrow or mechanical mixer. When mixing by hand, form a crater for adding water. Add approximately 2.3 L (2.4 qts) of clean water per 30 KG (66 lb) bag, or enough to achieve a workable mix. Avoid a soupy mix. Excess water reduces strength and durability and can cause cracking. In cold weather, use warm water to accelerate the set. In hot weather, use cold water to slow the set.


CONCRETE REPAIRS – Concrete overlays, concrete repairs, etc.

Surface Preparation: Surfaces to be repaired must be sound and clean. Remove all delaminated or unsound concrete by chipping with a hammer and chisel or using a stiff wire brush. Clean the area to be repaired with potable water, leaving the concrete saturated but free of standing water. Some very porous concretes may require several applications of water to ensure complete saturation. For best results, apply SAKRETE Concrete Adhesive to the existing substrate before pouring.

Placing: After mixing the concrete, place and consolidate inside the repair area. Level concrete moving a straight-edged board in a sawing motion across concrete removing any excess and filling low areas. Allow freshly placed concrete to set or until the surface bleed water evaporates before finishing. Time will vary with weather conditions. Finishing: After bleed water evapourates, finish as desired. It is recommended, especially for air-entrained concrete (i.e. SAKRETE PSI 6000), to use a wood, magnesium or aluminium float trowel for a smooth surface. For a textured surface, use a broom or brush. If the repair overlay is placed over an existing concrete joint or break, it is important to tool a joint into the soft mix over the existing joint or break. Use a jointer tool to form a joint half the depth of the repair. NOTE: Finishing cementitious materials too early, or over-working the materials can cause dusting, cracking, scaling and a weak surface.

Curing: See below.


Excavating: Dig hole with auger or shovel, to required depth. Allow 2 inches (5 cm) clearance on each side of post. Brace post if necessary.

Placing: Position post in hole. Fill with SAKRETE Fast Set and water simultaneously (2.3 L per 30 KG bag) until hole is full. Align the post. Use a level and check vertical position of post. When hole is full, lightly tamp or trowel top of concrete to consolidate. Smooth and slope the surface to allow water to drain away. If necessary, sprinkle a small amount of water on the surface to aid with finishing. Be sure post is aligned as required. SAKRETE Fast Set will stiffen in 30 minutes. NOTE: For deck supports, SAKRETE Fast Set must be premixed as detailed under procedures above.

Curing: See below.

NEW CONSTRUCTION – Making concrete slabs, walks, etc.

Planning: Position layout stakes aligned with the project borders. Place corner stakes 12 inches (30 cm) outside the finished slab area. Join stakes together with string, the corners should overlap. String lines will show the planned layout and provide the height form boards are to be set at.

Excavating: The total depth of an excavation that is approximately 5 inches to 6 inches (13 cm to 15 cm) long, should be determined by allowing for a minimum of 2 inches (5 cm) of compacted crushed stone under 3 inches to 4 inches (8 cm to 10 cm) of concrete. Excavate 6 inches (15 cm) beyond string lines to allow room for forms. Spread crushed stone evenly throughout the excavation and compact well using a portable vibrator, roller or hand tamper.

Forming: Using straight 2 inch x 4 inch (5 cm x 10 cm) lumber, cut forms to length, then position so inside edges are below the string line. Drive pointed 2 inch x 4 inch (5 cm x 10 cm) stakes into ground at 3 feet (1 m) spacing to support forms. Screw together all forms, braces and corners from outside the work area. NOTE: Adjust forms before securing to direct rainwater run-off; slope approximately 1/8 inch (3 mm) per foot.

Curves: Create curves by attaching 1/8 inch (3 mm) hardboard to inside corners of forms. Drive support stakes behind the curved form. Place expansion joint board against adjoining surfaces to allow independent movement. Treat the insides of the forms with a commercial release agent or vegetable oil prior to pouring.

Placing: After mixing the concrete, place and consolidate inside the forms, slightly overfilling and roughly leveled. Work a pointed trowel along inside edges of the forms removing trapped air pockets. Tap the forms with a hammer for smoother sides. NOTE: Mixing, placing and finishing should be timed to make sure concrete does not harden before finishing.

Leveling: Level concrete by moving a straight-edged board, overlapping the forms in a sawing motion across concrete removing any excess and filling low areas. Then float the concrete smooth using a wood, magnesium or aluminium float trowel. Stop floating when bleed water accumulates on surface.

Finishing: After bleed water evapourates, finish as desired. It is recommended, especially for air-entrained concrete (i.e. SAKRETE PSI 6000), to use a wood, magnesium or aluminum float trowel for a smooth surface. For a textured surface use a broom or brush. Use an edger tool to finish edges. NOTE: Finishing cementitious materials too early, or over-working the materials can cause dusting, cracking, scaling and a weak surface.

Jointing: Stress control joints are placed to control where slabs crack, along a pre-determined path. Use either a hand jointer while the mix is soft or saw cut 6-18 hours after hardening. Joints should be 1/5 of the full thickness of the slab and placed every 8 ft (2.4 m) in both directions. Adjust down for appearances (centering).

Curing: See below.


SAKRETE Fast Set can be used successfully in cold weather, providing that the following precautions are taken:

1. SAKRETE Fast Set must be maintained at room temperature for 24 hours prior to use.

2. Do not use if temperatures will fall below -5 ºC (23 ºF) within 24 hours of placing concrete.

3. Clean, warm tap water should be used for mixing.

4. Placed concrete must be protected from freezing for at least 24 hours after application. A blanket of insulation will assist in proper setting of concrete.


Curing means maintaining proper moisture and temperature. Allow newly placed material to set until surface is hard to the touch. Then cover SAKRETE Fast Set concrete with plastic to prevent evaporation of mixing water. New concrete can be opened to foot traffic in approximately 3 hours.


Initial Set: Approximately 20-40 minutes

Compressive Strength: 

1 Day 10 MPa (1450 psi)
7 Day 19 MPa (2755 psi)
28 Day 27.5 MPa (4000 psi)


Exceeds strength requirements of ASTM C 387 when used as directed.


Concrete must be fully cured (approximately 28 days) and dry before painting. Refer to paint manufacturer directions for application instructions.


30 kg (66 lb) yields approximately 0.014 m³ (1/2 ft³).

Slab Calculator

Dimensions in metres (m)
__ Length (cm) x __ Width (cm) x __ Depth (cm)
= ___ cm3 ÷ 100
= ___ m3 ÷ 0.014
= ___ of 30 KG bags required

Dimensions in feet (ft)
__ Length (in) x __ Width (in) x __ Depth (in)
= ___ in3 ÷ 12
= ___ ft3 x 2
= ___ of 30 KG bags required


Material should be stored in a dry covered area protected from the elements. Unopened bags have a shelf life of 12 months.


CAUSES BURNS. Do not swallow. Do not get in eyes. Do not get on skin or clothing. Do not breathe fumes. Handle with care. Keep out of reach of children. Wear safety glasses, protective clothing and dust mask. Use only in a well-ventilated area.

FIRST AID TREATMENT: Contains cement, when wet forms a calcium hydroxide solution. If swallowed call a poison control center or doctor immediately. Do not induce vomiting. If in eyes, rinse with water for at least 15 minutes. If on skin, rinse well with water. If on clothes remove
clothes. If breathed in, move person to fresh air.


This product is designed to meet the performance specifications outlined in this product data sheet. If the product is used in conditions for which it was not intended, or applied in a manner contrary to the written recommendations contained in the product data sheet, the product may not reach such performance specifications. The foregoing is in lieu of any other warranties, representations or conditions, expressed or implied, including, but not limited to, implied warranties or conditions of merchantable quality or fitness for particular purposes, and those arising by statute or otherwise in law or from a course of dealing or usage of trade.

fast set
fast set

Complete your concrete project in just hours! Use SAKRETE Fast Set, a rapid-setting, high quality, concrete mix designed for same-day construction. Available in 30 KG bags. Go with SAKRETE, The Pro’s Choice since 1936.

Product Codes: 11507130, 21507130

• Premium quality for consistent strength and durability
• Ideal for new concrete construction projects, concrete overlays and repairs
• Construct footings, sidewalks, slabs, steps and patios; set deck posts, fence posts and poles
• Designed for applications requiring a thickness of more than 2 inches (5 cm)
• Ideal for cold weather application (for temperatures above -5 °C or 23 °F), as well as Spring or Fall projects
• Open to foot traffic in approximately 3 hours


Product Identifier Cement Mixes
Other Means of Identification Cement Mixes
Other Identification SAKRETE Fast Set, SAKRETE Sand Mix, HOMECRETE Sand Mix, SAKRETE Parging Mix, KING Parging Mix, SAKRETE Mortar Mix, SAKRETE Mortar Mix-Type N, SAKRETE Mortar Mix-Type S, HOMECRETE Mortar Mix, SAKRETE Concrete Mix, HOMECRETE Concrete Mix, SAKRETE RAPID POST, SAKRETE PSI 6000, KING White Mortar Mix, CASTLE Concrete Mix
Product Family KING Home Improvement Products
Recommended Use Various product uses including but not limited to specific description of use. Please see product packaging.
Restrictions on Use None known.
Manufacturer King Packaged Materials Company, 3385 Harvester Road, Burlington, Ontario, L7R 3Y5,
Emergency Phone No. King Packaged Materials Company, (800) 461-0566, 8:30am-4:30pm, Chemtrec, (800) 424-9300, 24 hours/7 days a week
SDS No. 0157
Date of Preparation October 4, 2016


Skin irritation – Category 2; Serious eye damage – Category 1; Skin sensitization – Category 1; Carcinogenicity – Category 1A; Specific target organ toxicity (single exposure) – Category 3; Specific target organ toxicity (repeated exposure) – Category 1

Label Elements

Signal Word:

Hazard Statement(s):
Causes skin irritation.
Causes serious eye damage.
May cause an allergic skin reaction.
May cause cancer.
May cause respiratory irritation.
Causes damage to organs (lungs) through prolonged or repeated exposure.

Precautionary Statement(s):
Obtain special instructions before use.
Do not handle until all safety precautions have been read and understood.
Wash hands thoroughly after handling.
Contaminated work clothing must not be allowed out of the workplace.
Wear protective gloves/protective clothing/eye protection/face protection.
Use only outdoors or in a well-ventilated area.
Do not breathe dust/fume/gas/mist/vapours/spray.
Do not eat, drink or smoke when using this product.

IF exposed or concerned: Get medical advice/attention.
IF ON SKIN: Wash with plenty of water.
Take off contaminated clothing and wash it before reuse.
If skin irritation or rash occurs: Get medical advice/attention.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTRE or doctor.
IF INHALED: Remove person to fresh air and keep comfortable for breathing.

Call a POISON CENTRE or doctor if you feel unwell.
Store locked up.
Store in a well-ventilated place. Keep container tightly closed.
Dispose of contents and container in accordance with local, regional, national and international regulations.
30% of the mixture consists of ingredient(s) of unknown acute toxicity.

Other Hazards
None known.




Chemical Name CAS Registry No. Concentration % Other Identifiers
Silica, total quartz 14808-60-7 60-100% Not applicable
Portland cement 65997-15-1 30-60% Not applicable


The exact percentage (concentration) of composition has been withheld as a trade secret in accordance with paragraph (i) of §1910.1200.



First-Aid Measures

Move to fresh air. Keep at rest in a position comfortable for breathing. Call a Poison Centre or doctor if you feel unwell.
Skin Contact
Rinse with lukewarm, gently flowing water for 5 minutes. Take off immediately contaminated clothing, shoes and leather goods (e.g. watchbands, belts). Thoroughly clean clothing, shoes and leather goods before reuse or dispose of safely. If skin irritation or a rash occurs, get medical advice or attention.
Eye Contact
Immediately rinse the contaminated eye(s) with lukewarm, gently flowing water for 15-20 minutes, while holding the eyelid(s) open. Remove contact lenses, if present and easy to do. Immediately call a Poison Centre or doctor.
Never give anything by mouth if person is rapidly losing consciousness, or is unconscious or convulsing. Do not induce vomiting. Get medical advice or attention if you feel unwell or are concerned.

Most Important Symptoms and Effects, Acute and Delayed
If inhaled: can irritate the nose and throat. Can cause lung injury. If on skin: skin sensitizer. May cause an allergic skin reaction in some people. May cause moderate to severe irritation. If in eyes: causes moderate to severe irritation. Symptoms include sore, red eyes, and tearing. If swallowed: can irritate the mouth, throat and stomach. Symptoms may include nausea, vomiting, stomach cramps and diarrhea.

Immediate Medical Attention and Special Treatment

Special Instructions
Not applicable.


Extinguishing Media

Suitable Extinguishing Media
Not combustible. Use extinguishing agent suitable for surrounding fire.
Unsuitable Extinguishing Media
None known.

Specific Hazards Arising from the Product
This product presents no unusual hazards in a fire situation.

Special Protective Equipment and Precautions for Fire-fighters
Approach fire from upwind to avoid hazardous vapours or gases. Fire-fighters may enter the area if positive pressure SCBA and full Bunker Gear is worn.


Personal Precautions, Protective Equipment, and Emergency Procedures
Use the personal protective equipment recommended in Section 8 of this safety data sheet. Evacuate the area immediately. Isolate the hazard area. Keep out unnecessary and unprotected personnel.

Environmental Precautions
It is good practice to prevent releases into the environment. Do not allow into any sewer, on the ground or into any waterway.

Methods and Materials for Containment and Cleaning Up
Collect using shovel/scoop or approved HEPA vacuum and place in a suitable container for disposal. Avoid generating dust.


Precautions for Safe Handling
Avoid repeated or prolonged skin contact. Do not swallow. Do not breathe in this product. Avoid generating dusts. Keep containers tightly closed when not in use or empty. Do NOT eat, drink or store food in work areas.

Conditions for Safe Storage
Store in the original, labelled, shipping container. Store in an area that is: dry, well-ventilated. Protect product from contact with water, including humidity. Prevent rainwater and ground water from reaching storage area.


Control Parameters




Chemical Name





8-hr TWA


Portland cement

1 mg/m3
(R) A4

5 mg/m3

Silica, total quartz

0.05 mg/m3
(R) A2

0.1 mg/m3


Appropriate Engineering Controls
Use local exhaust ventilation, if general ventilation is not adequate to control amount in the air.

Individual Protection Measures

Eye/Face Protection
Wear chemical safety goggles and face shield when contact is possible.
Skin Protection
Wear chemical protective clothing e.g. gloves, aprons, boots.
Respiratory Protection
Wear a NIOSH approved particulate respiratory equipped with an N95, R95, or P95 filter.



Basic Physical and Chemical Properties

Appearance Grey powder
Odour Odourless
Odour Threshold Not available
pH Not available
Melting Point/Freezing Point Not available (melting); not available (freezing)
Initial Boiling Point/Range Not available
Flash Point Not available
Evapouration Rate Not available
Flammability (solid, gas) Not applicable
Upper/Lower Flammability or Explosive Limit Not available (upper); not available (lower)
Vapour Pressure Not available
Vapour Density (air = 1) Not available
Relative Density (water = 1) 2.5
Solubility Not available (in water); not available (in other liquids)
Partition Coefficient, n-Octanol/Water (Log Kow) Not available
Auto-ignition Temperature Not available
Decomposition Temperature  Not available
Viscosity Not available (kinematic); Not available (dynamic)
Physical State Solid


Not reactive under normal conditions of use.

Chemical Stability
Normally stable.

Possibility of Hazardous Reactions
None expected under normal conditions of storage and use.

Conditions to Avoid
Water, moisture or humidity.

Incompatible Materials
None known.

Hazardous Decomposition Products
Under normal conditions of storage and use, hazardous decomposition products should not be produced.


Likely Routes of Exposure
Inhalation; skin contact; eye contact; ingestion.

Acute Toxicity

Chemical Name LC50 LD50 (oral) LD50 (dermal)
Silica, total quartz 500 mg/kg (rat)


Skin Corrosion/Irritation
May cause moderate or severe irritation based on information for closely related materials.
Serious Eye Damage/Irritation
May cause serious eye damage based on information for closely related materials.

STOT (Specific Target Organ Toxicity) – Single Exposure

May cause severe nose and throat irritation, severe lung injury.
Skin Absorption
No information was located.
May be harmful based on information for closely related materials.

Aspiration Hazard
Can cause lung damage if aspirated based on human experience.

STOT (Specific Target Organ Toxicity) – Repeated Exposure
Causes irritation of the respiratory system. Respiratory tract injury has been observed. Respirable crystalline silica in the form of quartz or cristobalite from occupational sources is listed by the International Agency for Research on Cancer (IARC) and National Toxicology Program (NTP) as a lung carcinogen. Prolonged exposure to respirable crystalline silica has been known to cause silicosis, a lung disease, which may be disabling. While there may be a factor of individual susceptibility to a given exposure to respirable silica dust, the risk of contracting silicosis and the severity of the disease is clearly related to the amount of dust exposure and the length of time (usually years) of exposure.

Respiratory and/or Skin Sensitization
May cause an allergic reaction (skin sensitization) based on information for closely related chemicals.


Silica, total quartz Group 1 A2 Known carcinogen


May cause cancer.

Reproductive Toxicity

Development of Offspring
No information was located.
Sexual Function and Fertility
No information was located.
Effects on or via Lactation
No information was located.
Germ Cell Mutagenicity
No information was located.
Interactive Effects
No information was located.


May cause long lasting harmful effects to aquatic life.

Persistence and Degradability
No information was located.

Bioaccumulative Potential
No information was located.

Mobility in Soil
No information was located.

Other Adverse Effects
There is no information available.


Disposal Methods
Contact local environmental authorities for approved disposal or recycling methods in your jurisdiction.


Not regulated under US DOT Regulations.

Environmental Hazards
Not applicable
Special Precautions
Not applicable

Transport in Bulk According to Annex II of MARPOL 73/78 and the IBC Code
Not applicable


Safety, Health and Environmental Regulations

WHMIS 1988 Classification

Class D2A, Class E
D2A – Very Toxic (Chronic toxicity; Carcinogenicity); E – Corrosive

This product has been classified in accordance with the hazard criteria of the Controlled Products Regulations and the SDS contains all of the information required by the Controlled Products Regulations.


Toxic Substances Control Act (TSCA) Section 8(b)
All ingredients are on the TSCA Inventory or are exempt from TSCA Inventory requirements under 40 CFR 720.

Additional USA Regulatory Lists
This product contains a chemical known to the State of California to cause cancer.


SDS Prepared By King Packaged Materials Company
Phone No. 905-639-2993
Date of Preparation October 4, 2016




To the best of our knowledge, the information contained herein is accurate. However, neither KPM Industries Ltd., nor any of its subsidiaries, assumes any liability whatsoever for the accuracy or completeness of the information contained herein. Final determination of suitability of any material is the sole responsibility of the user. All materials may present unknown hazards and should be used with caution. Although certain hazards are described herein, we cannot guarantee that these are the only hazards that exist.

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More Information

Did you know that the standard depth for a concrete slab is 4 inches thick? Learn how to construct a slab or walk using SAKRETE Fast Set, by watching the how-to video or reading the how-to instructions.