Product Variants
Method of Application
A comprehensive, sequential procedural view designed for engineers and site applicators to attain faultless surface integration using LX-7 adhesive compounds.
Installation Instructions

Before you begin
- Ensure all surfaces are between 50°F (10°C) and 100°F (38°C).
- Verify the surface is structurally sound, clean, and free of dirt, oil, grease, paint, laitance, concrete sealers, or curing compounds.
- For very large format tiles: Remove any demolding wax powder on the back of the tile and any fiber mesh present.
Before you begin
- Ensure all surfaces are between 50°F (10°C) and 100°F (38°C).
- Verify the surface is structurally sound, clean, and free of dirt, oil, grease, paint, laitance, concrete sealers, or curing compounds.
- For very large format tiles: Remove any demolding wax powder on the back of the tile and any fiber mesh present.
Surface preparation
- Floors: The substrate should not have a variation exceeding 1/8" in 10 feet (3 mm in 3.05 m) or 1/16" in 24 inches (2 mm in 600 mm) when measured from high points.
- Walls: The prepared substrates should not have a variation exceeding 1/8" in 10 feet (3 mm in 3.05m) when measured from high points.
- Dampen dry, dusty concrete slabs or masonry and sweep off excess water before installation.
- New concrete slabs must be damp cured and at least 28 days old before installation.
Suitable bonding surfaces
- Concrete or plaster that fully cured and absorbs water (tested by sprinkling water).
- Properly cured lightweight cementitious systems that are dry and meet manufacturer specifications.
- Cutback adhesive residue must be removed by wet scraping before installation.
Movement joints
- Install movement joints around the perimeter and other plane changes.
- Expansion joints in the substrate must be continued through the tile work.
Mixing gresbond lx-7
- Use clean water and GRESBOND LX-7 S1 powder in a ratio of 5.0-5.5 L water per 20 kg powder.
- Mix with a low-speed drill mixer until a smooth, paste-like consistency is achieved.
- Let the mixture stand for 03-05 minutes, then stir again before use.
- The mixture should hold troweled ridges without slumping when properly mixed.
Applying gresbond lx-7
- Suitable Trowel: Use a properly sized notch trowel to ensure complete tile coverage.
- Tile/Stone Application:
- Apply a skim coat of mortar to the surface using the flat side of the trowel.
- With the notched trowel held at a 45° angle, comb additional mortar onto the surface in one direction.
- Press the tile firmly into the mortar, moving back and forth to flatten ridges and ensure maximum coverage.
- Adhesive mortar should not be used to fill low spots in the flooring. The mortar thickness should not exceed the specified range.
- Back-buttering is mandatory for all large format tiles.
- Glass Mosaic Tiles:
- Apply the adhesive with a scraping motion using a notched trowel with 4mm notches for a 1.5-2 mm bed thickness.
- Setthe tiles and gently tap them with a mallet to ensure full bedding.
- After the tiles are firm, dampen the face of the mosaic sheets and remove the paper backing.
- Wood Substrates: Use GRESBOND EA-100 for tile or stone installations.
Additional tips
- Use a mechanical edge-leveling system to minimize lippage during installation.
- Lightly tap the tile surface with a rubber mallet to ensure good contact with the mortar bed.
- Clean tools with water before the material dries.
- Store GRESBOND LX-7 S1 in a cool, dry area.
Grouting
- Grout installation should commence after a minimum of 24 hours of curing time at 70°F (21°C).
- Use Gresbond Unsanded Grout mixed with Gresbond Grout Admix-KGA-01.
- For maximum stain resistance of internal spacer joints applications, use Gresbond KE-100 Stainfree Grout.
Suitable Substrates
Note: Surfaces must be thoroughly cleaned and roughened before the installation of tiles or stones to secure dynamic mechanical integration.
Download technical data sheets for all Gresbond products.
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