Hard Rock Concrete Supplies carries a full range of supplies for the concrete industry. Our range of products includes; Sealers, Cure & Seals, Rebar (Steel and GFRC), Insulation, Support Brackets, Weeping Tile, Patching and Repair Materials; as well as hand and power tools.
Our team prides itself on our customer service, product knowledge, and wide range of quality products and would love the opportunity to talk with you about all of your concrete needs. 

Planitop 18 TG 50lb.

SKU: 275844
Regular price $37.49

The number of units will automatically be added to your cart. This product is sold by the unit. The quantity added to the Cart will reflect the square footage of the number of units that are required for your project.

Very Rapid-Hardening, Trowel-Grade, High-Early-Strength Repair Mortar

Planitop 18 TG is a one-component, shrinkage-compensated, very rapid-hardening, trowel-grade, cementitious repair mortar with a corrosion inhibitor. Planitop 18 TG gains strength rapidly and is particularly suited for all horizontal concrete repairs from 1/2" to 2" (12 mm to 5 cm) thickness when applied neat and up to 8" (20 cm) when extended with aggregate.

• Very rapid-hardening with more than 15 minutes of working time
• Easy to use, requiring only the addition of potable mixing water
• Easily placed and finished by screed or float
• If applied at 73°F (23°C), Planitop 18 TG can be opened to vehicular traffic within 2 hours of application.
• Can be extended up to 80% by weight with 3/8" (10 mm) pea gravel for thicknesses up to 8" (20 cm)

• Meets or exceeds requirements for ASTM C928 R3 mortar

• For interior and exterior, horizontal concrete repairs
• For traffic-bearing surfaces
Consult MAPEI's Technical Services Department for installation recommendations regarding uses not listed.

• Use at ambient temperatures at between 32°F and 95°F (0°C and 35°C). For temperatures above 85°F (29°C), use hot-weather guidelines from the American Concrete Institute (ACI). For temperatures below 40°F (4°C), use the ACI’s guidelines for cold-weather applications.
• For applications over 8" (20 cm) thickness, contact MAPEI’s Technical Services Department.
• Do not use Planibond ® 3C as a bonding agent for Planitop 18 TG.

• Properly prepared, structurally sound, fully cured concrete substrates (at least 28 days old)

• Concrete surface must be clean, sound and free of loose particles, efflorescence, paints, tars, grease, asphaltic materials, bond breakers, curing compounds, wax, and any foreign substance or any conditions
that may affect proper bonding of the product and result in cracking, discoloration or changes in overall product performance. Mechanically profile and prepare concrete surfaces by engineer-approved methods, allowing a minimum clearance of 3/4" (19 mm) behind reinforcing steel. For acceptable profile height, reference International Concrete Repair Institute (ICRI) Technical Guideline #310.2R concrete surface profile (CSP) #5 and greater.
• Ensure that the concrete substrate is saturated surface-dry (SSD) before installation of Planitop 18 TG. The concrete surface should be free of any standing water.
• Reference ICRI Technical Guideline #310.1R-2013 and ACI RAP Bulletin 7 for repair geometry, surface
preparation and material application details.

Before product use, take appropriate safety precautions. Refer to the Safety Data Sheet for details.
1. Into a clean mixing container, pour 3/4 of the quantity of 2.8 U.S. qts. (2.65 L) of cool, clean potable water per 50-lb. (22.7-kg) bag. Add the remaining water as needed to achieve the desired consistency.
2. For best results, mix Planitop 18 TG by drill mixing or in a mortar mixer. Slowly add Planitop 18 TG to water while mixing. For drill mixing, use a low-speed drill and a Jiffy mixer. Mix for 2 to 3 minutes to a smooth, homogenous consistency.
3. For an extended mix, add up to 80% by weight (40 lbs. [18.1 kg]) of clean, washed, SSD 3/8"
(10 mm) pea gravel per 50-lb. (22.7-kg) bag.

Read all installation instructions thoroughly before installation.
1. Apply a scrubcoat of Planitop 18 TG directly over the SSD prepared surface.
2. Place Planitop 18 TG immediately over the scrubcoat and finish it to the surrounding concrete texture by float or screed. Application times will vary depending on climatic conditions.

• Wash hands and tools promptly with water before material hardens. Cured material must be mechanically removed. 

• During curing, protect Planitop 18 TG from high wind conditions and keep ambient temperatures at between 45°F and 85°F (7°C and 29°C).
• An ASTM C309 curing compound or an ASTM C1315 cure and seal can be utilized.
• Protect from freezing for 12 hours after application.

Product Performance Properties

Laboratory Tests


Compressive strength – ASTM C109 (CAN/CSA-A5)

   1 hour

> 2,030 psi (14 MPa)

   2 hours

> 5,080 psi (35.0 MPa)

   1 day

> 7,800 psi (53.8 MPa)

   28 days

> 9,400 psi (64.8 MPa)

Compressive strength – ASTM C39 (CAN/CSA- A23.2-9C) with 80% extension (pea gravel)

   1 hour

> 2,030 psi (14 MPa)

   1 day

> 6,450 psi (44.5 MPa)

   28 days

> 8,560 psi (59.0 MPa)

Flexural strength – ASTM C348 (CAN/CSA-A23.2- 8C)

   1 day

> 730 psi (5.03 MPa)

   28 days

> 870 psi (6 MPa)

Modulus of elasticity – ASTM C469

   28 days

> 5.08 x 10 6 psi (35.02 GPa)

Slant/shear bond strength – ASTM C882

   1 day

> 2,400 psi (16.6 MPa)

   28 days

> 3,000 psi (20.7 MPa)

Length change – ASTM C157 (modified per ASTM C928), typical value

   28 days, dry-cured


   28 days, wet-cured


Freeze/thaw resistance – ASTM C666-A (CAN/CSA A23.2-9B)

   300 cycles

100% durability factor

Resistance to de-icing salts – ASTM C672 (CAN/CSA A23.2-16C)

0 rating, no scaling (50 cycles)

Permeability to chlorides – ASTM C1202 (AASHTO T277)

Very low – in the range of 100 to 1,000 coulombs

VOCs (Rule #1168 of California’s SCAQMD)

0 g per L

Shelf Life and Product Characteristics before mixing

Shelf life

1 year when stored in original, unopened packaging in a dry and covered place at 73°F (23°C)

Physical state




Protect containers from freezing in transit and storage. Provide for heated storage on site and deliver all materials at least 24 hours before work begins.

Application Properties at 73°F (23°C)

Mixing ratio

Up to 2.8 U.S. qts. (2.65 L) per 50-lb. (22.7-kg) bag

Pot life

About 15 minutes

Initial set

> 15 minutes

Final set

< 40 minutes

Open to vehicular traffic

< 2 hours

Thickness per lift

1/2" to 2" (12 mm to 5 cm) neat; 8" (20 cm) extended


Meets or exceeds R3 requirements

CSI Division Classifications

Cast-in-Place Concrete


Cementitious Decks and Underlayment


Concrete Restoration and Cleaning


Size - Bag: 50 lbs. (22.7 kg)

Approximate Coverage* per 50 lbs. (22.7 kg)
Mixture Yield
Neat  - 0.41 cu. ft. (0.0116 m 3 )
Extended with 40 lbs. (18.1 kg) of 3/8" (10 mm) pea gravel - 0.58 cu. ft. (0.0164 m 3 )
* Coverage shown is for estimating purposes only. Actual jobsite coverage may vary according to climate and substrate conditions.


Planitop 18TG TDS

Planitop 18TG SDS