Stone veneer installation detail

How to Install Stone Veneer

Deco Rock veneer goes on much like ceramic tile: over clean, cured render, with a suitable adhesive mortar. The details below are what separates a wall that lasts from one that does not.

1. Prepare the surface

The substrate must be cured, clean, sound and flat. Render (repello) is ideal. Remove dust, laitance, form oil and any loose material. A dusty wall is the most common cause of a failed bond.

2. Choose the adhesive

Use Bondex or Deco Rock mortar. Mix to a workable consistency and do not over-water — added water reduces bond strength.

3. Start with the corners

Always fit the corner pieces first, then work along the flats towards them. This is what produces the continuous wrap that makes the wall read as solid stone.

Alternate piece lengths and avoid lining up joints, so no visible pattern repeats.

4. Grout, or deliberately none

No grout: QuickFit, FastFit, ThinStone, FossilRock — pieces butt together. Faster, and nothing to stain later.

Grout required: Hackett, IrishStone.

Brick styles: optional, but grouting is recommended to avoid open gaps.

On natural stone, consider dry-stacking a rectangular format. Grout is where staining and algae start, especially in tight joints.

5. Sealing

Manufactured veneer does not need sealing. Porous natural stone — coralina, mollejón — needs a penetrating sealer as a base and then a topping sealer to close the surface pores. See the maintenance guide.

6. Ordering the right quantity

Flats are quoted by the square metre and corner pieces by the linear metre — they are ordered separately. Measure the wall area for flats and the total corner length for corners, and allow a small waste margin for cutting.

Frequently asked questions

What do I stick stone veneer onto?

Clean, cured render (repello) or another sound, flat substrate, using Bondex or Deco Rock mortar. Dust and loose material are the main causes of bond failure.

Do I install the corner pieces first?

Yes, always. Fit the corners, then work along the flats towards them — that is what makes the wall wrap the corner with no visible seam.

Which Deco Rock lines need grout?

Hackett and IrishStone require grout. QuickFit, FastFit, ThinStone and FossilRock install with no grout. Brick styles are optional but grouting is recommended.

Does manufactured stone veneer need sealing?

No. Porous natural stone does — a penetrating sealer first, then a topping sealer.

How do I calculate quantities?

Wall area in square metres for flats, and total corner length in linear metres for corner pieces. Send us the measurements and we will do it with you.

In short

How to install manufactured stone veneer and natural stone in Costa Rica: surface prep, mortar, corner pieces first, grout or dry-stack, and curing.

Installer questions?

Send us a photo of the substrate and we will tell you what it needs.