SURFACE CONDITION
For best project results, the concrete should be in sound physical condition, free of extensive cracking, pitting and spalling. The surface must also be dry and clean and free of dust, dirt, efflorescence, oil, chemicals, pevious flaking coatings and other contaminants which may block effective long-term adhesion.

REPAIRS
For best visual results and long-term performance, cracks, holes and significant surface pitting should be filled with a cement patch material and allowed to cure as directed before proceeding.

EXPANSION JOINTS
Expansion joints in the concrete slab serve an important purpose, guarding against cracking in the slab due to movement — and should NOT be filled. If covering the expansion joints is still preferred, joints should first be treated with ElastoLock Exterior Membrane and Elastolock seam mesh to minimize the chance of any cracking in the finish later due to slab movement.

SMOOTH SURFACES
Very smooth or "power troweled concrete" lacks optimal surface profile for most effective bond. In such cases, etching the concrete is recommended to ensure good penetration and "grab" of the coating. Etching will also remove efflorescence from the surface. If etching is required, see the surface preparation section for instructions on etching.

WASHING THE SURFACE
Removing all dirt, debris and other contaminants is key for ensuring long term beauty and performance. For easiest and best results cleaning with a pressure washer is highly recommended.

MASKING / DROP SHEET USE
Protect adjoining walls and other objects prior to starting work.

Good surface preparation is easy if performed with attention to a few key details. For best results, follow written product instructions. For detailed preparation information, a visit to the surface preparation section is also recommended.

PROCEED WITH APPLICATION OF YOUR DESIRED FINISH ONLY WHEN PREPARATION STEPS ABOVE HAVE BEEN COMPLETED.

Exterior Concrete Preparation

FlexRock® Application by Roller

 

 

FlexRock® (by roller) is a three-part application that you can apply as a seamless finish or with a "grout" line pattern to make the surface look like stone tile or flagstone. FlexRock takes a little bit more work — but the decorative effects can be quite spectacular and unique.

STEP ONE: Roll on a uniform coat of Beauti-Tone Textured Primer which will grab onto the concrete and serve as an ideal bonding surface for the FlexRock finish. After the Textured Primer has dried for 1 - 2 hours (longer in cool or humid conditions) — FlexRock can be applied.

STEP TWO: Using a 1/2" paint roller, apply a uniform coat of FlexRock Floor Coating (at a coverage rate of about 60 sq.ft. per gallon or about 1/16" - 1/8" wet thickness) over the dry primer. If you wish, lightly roll over the wet FlexRock texture with a dry foam roller to soften any peaks of the texture before it dries. Continue until the surface is covered. Allow it to dry for 2 - 4 hours, or until it will support your weight.

Decorative Highlight Coat: Use the HardRock/FlexRock Texture Roller to apply the corresponding highlight color over the dry base coat. This process is fast and easy. Use medium roller pressure, to leave a uniform "dappled" finish. Apply in a uniform "X" pattern. See the full method here. (Let everything cure for 24 hours.)

Sanding: (If stencil tape was used, peel it up before sanding.) Use a pole sander — or a floor buffer for larger areas — loaded with 60 grit sandpaper to soften texture as desired, then vacuum ALL sanding dust.

STEP THREE: Apply two coats of HardRock Clear Coat Sealer a few hours apart for final durability, salt, stain and chemical resistance.

*** OPTIONAL GROUT LINE & MORTAR JOINT EFFECTS: If a tile or flagstone effect is desired, a uniform coat of Beauti-Tone Textured Primer must be applied first in your desired "grout line / mortar joint" color. When Primer is dry, lay down a pattern as desired onto the dry primer using Beauti-Tone Grout Line or Flagstone Stencil Tape. Brush some textured primer over the tape to lock it down before FlexRock application as detailed above. (Leave the ends of the stencil tape free so you can pull it up later.) After FlexRock has cured for 24 hours, PEEL UP THE STENCIL TAPE to reveal the pattern and sweep up any debris before application of sealer/clear coat.

Visit the FlexRock product page
for additional details and videos.


READ AND FOLLOW ALL ENCLOSED DIRECTIONS AND PRECAUTIONS THAT COME WITH THE PRODUCT PRIOR TO BEGINING YOUR PROJECT.

If you have any questions — before or during your project — be sure to contact us at info@techstone.ca or call 1-877-279-0694. We are here to help you achieve great results!