Tile Adhesive vs Cement-Sand Mortar
Which Should Your Tiler Use? (2026)

Two ways to stick a tile down

Every tile sits on something. For decades the usual answer in Malaysia was a bed of cement and sand mixed on site, with the tile pressed into it, sometimes with a cement paste on the back. Today most tile shops also sell bagged tile adhesive: a factory-made cement mix with polymers and additives that is mixed with water and spread thinly with a notched trowel.

Both are cement-based, which is why people treat them as the same thing. They are not. They are designed for different jobs, and using the wrong one is a common reason tiles sound hollow a year later.

Side by side

Why porcelain needs adhesive

Cement mortar holds a tile partly by soaking into its back. Traditional ceramic tiles are porous enough for that to work. Porcelain and homogeneous tiles are made to absorb very little water, which is what makes them hard-wearing and suitable for wet and outdoor areas, but it also leaves plain cement little to grip. ClickBina's floor tile replacement guide describes porcelain as having very low water absorption.

The polymers in a tile adhesive bond to that smooth, dense back. That is why the change to porcelain and large formats in Malaysian homes has gone hand in hand with the change to adhesive.

Thick bed or screed plus thin bed

A thick mortar bed is tempting because one step does two jobs: it levels the floor and holds the tile. The trouble is that a thick, uneven bed shrinks as it dries, rarely fills the back of every tile, and leaves voids. Those voids are where hollow, cracked and lifted tiles start, as ClickBina's popped and hollow floor tiles guide explains.

The method most good tilers now follow splits the jobs. A cement-sand screed corrects the level and forms the falls; it is left to cure; then the tiles go down on a thin, even bed of adhesive with full cover. The ClickBina floor screed guide explains when a floor needs a screed or a levelling compound before tiling.

Reading the adhesive bag: C1, C2, T, E and S

Many adhesive bags carry a short class code from the European and ISO tile adhesive standards. It tells you more than the brand name does:

A code such as C2TE S1 reads as improved, non-slip, extended open time and deformable. Ask the tiler which class they plan to use and check the bag on site.

Which to use where

• Living rooms and bedrooms, porcelain or homogeneous: screed if needed, then an improved adhesive with full cover.
• Bathrooms and wet kitchens: screed to falls, waterproofing, then an improved adhesive suitable for wet areas.
• Walls: adhesive with a non-slip grade; mortar-fixed wall tiles are a common source of loose tiles.
• Car porch, balcony and outdoors: an improved, deformable adhesive; heat and rain move the tiles more.
• Tiling over old tiles: an adhesive made for the purpose, on a sound, cleaned surface; never a mortar bed.
• Old ceramic floors being patched: matching the existing mortar bed can make sense for a few replacement tiles.

Full cover, whichever you choose

No bedding material helps if it only touches part of the tile. Spot fixing, with a few lumps of mortar or adhesive on the back, is the shortcut behind most hollow tiles. With adhesive, the right notched trowel, back-buttering of large tiles and lifting a tile now and then to check the cover are what good practice looks like. The large-format tile guide describes the method for big tiles.

What it costs

The bedding method is part of the tiling rate rather than a separate line. These figures are already published on ClickBina's tiling guides (indicative 2026, Klang Valley):

A cheaper quotation sometimes saves money by skipping the screed and laying tiles on a thick bed of mortar. Ask how the floor will be levelled and what the tiles will be fixed with, so two quotations can be compared fairly.

What the quotation should say

1. Whether the floor will be screeded or levelled first, and where.
2. The bedding method: adhesive with full cover, or mortar bed.
3. The adhesive class for each area, for example improved and deformable outdoors.
4. How falls will be formed in wet areas, and where the waterproofing goes.
5. Movement joints at the edges and over structural joints.

ClickBina's tiling contractor guide lists the rest of what a tiling quotation should itemise and how to check the finished floor before you pay.

How ClickBina can help

We do floor and wall tiling as part of renovation work, from one bathroom to a whole house, levelling the floor first where it needs it and fixing tiles on adhesive with full cover. WhatsApp us your job details for a quote: your area, the property type, which rooms, their rough size in sq ft, the tile type and whether old tiles have to be hacked.

ClickBina is an experienced KL & Selangor contractor for whole-house refurbishment and trade coordination. We reply within the hour, and the price we agree is a flat price with no hidden charges.

Sources & methodology

• ClickBina floor tile replacement guide — supply-and-lay, levelling and hacking rates; porcelain water absorption.
• ClickBina tiling contractor guide — porcelain and large-format rates; the tiling build-up and quotation items.
• ClickBina popped and hollow floor tiles guide, floor screed guide and large-format tile guide — voids, screeds and full adhesive cover.
• European and ISO tile adhesive classification — the meaning of the C, 1/2, T, E and S1/S2 codes printed on adhesive bags.

How we estimated prices: every RM figure on this page is quoted unchanged from the ClickBina guides named above; they are indicative Klang Valley ranges for 2026, not fixed rates.