SPC Flooring: Pros, Cons and Installation Explained

SPC flooring, short for stone plastic composite or stone polymer composite, has become one of the most common choices for HDB and condominium renovations. It is often laid directly over existing tiles, goes down quickly with little dust, and copes with water far better than timber-based laminate. Those advantages are real. So are its limits, and most disappointments with SPC come from treating it as a material that needs no preparation at all.

This article explains how SPC planks are made, what they do well and badly, how they compare with other resilient floors, and what a sound installation looks like. It is written for homeowners who want to understand what they are buying and what to check on site.

What SPC flooring is made of

An SPC plank is a layered product. From the bottom up, a typical construction includes:

An underlay, often a thin foam or cork-like layer attached to the plank, which helps with sound and minor surface irregularities.
A rigid core made from a mix of powdered limestone, polyvinyl chloride (PVC) and stabilisers, extruded into a dense, stiff board.
A printed decor film carrying the timber, stone or concrete pattern.
A clear wear layer that protects the print from scuffs and abrasion, sometimes with a further surface coating.

The rigid core is what distinguishes SPC from older flexible vinyl. Because it is stiff, it bridges small hollows and grout lines in the subfloor rather than telegraphing them through, and it supports a click-lock joint so planks interlock without glue. The high mineral content makes it dense and dimensionally more stable than flexible vinyl, though it is still a plastic composite and still moves with temperature.

Where SPC flooring performs well

Water tolerance. The core does not absorb water and swell the way HDF-cored laminate does, so spills and mopping are not a threat to the planks themselves.
Overlay renovation. SPC can often be floated over existing, sound, flat tiles, avoiding hacking and the noise, dust and time it brings.
Speed and cleanliness. Click-lock planks go down quickly and can be walked on immediately.
Comfort and acoustics. It feels warmer and slightly softer underfoot than tile, and the underlay reduces impact noise compared with a hard tile floor.
Repairability. Individual damaged planks can be replaced, though it usually means unclicking from the nearest wall.

The limitations to understand

SPC is water-resistant at the plank, but the floor as a whole is not a waterproof barrier. Water that runs through the joints or around the edges can sit beneath the planks on the old tiles or screed, where it dries slowly and can encourage odour and mould. It is not a substitute for proper wet-area construction, and most installers advise against SPC inside showers and other areas that are routinely flooded.

Other limitations are worth weighing:

Thermal movement. Prolonged direct sun through floor-to-ceiling glazing can heat planks and cause expansion, gapping or, in poor installations, peaking at joints. Blinds and correct expansion gaps help.
Scratches and dents. The wear layer resists everyday scuffs, but sharp grit, dragged furniture and heavy point loads can mark it. Felt pads and mats matter.
Hollow sound. Floating floors can sound slightly hollow or clicky underfoot compared with a bonded floor.
Refinishing. Unlike solid or engineered timber, a worn SPC surface cannot be sanded and refinished.
Material. It is a PVC-based product. Those who prefer to limit plastics indoors may lean towards timber or tile.

Our article on vinyl versus laminate flooring compares SPC’s family with laminate in more detail, and types of flooring in Singapore sets it against tiles, timber and stone.

Preparing the subfloor

A rigid core is tolerant of small irregularities, but it is not tolerant of a bad floor. Manufacturers specify maximum flatness deviations over a given length, and those limits should be checked rather than assumed. Over existing tiles, the installer should check:

That tiles are firmly bonded. Hollow, loose or popping tiles beneath a floating floor will keep moving and can crack or lift later.
That the floor is flat across rooms, not just between adjacent tiles. Dips and humps cause click joints to flex and eventually open or break.
That the floor is dry. A damp screed or a slow leak beneath will be trapped under the new floor.
That door clearances and the junction with other floors will work at the new, higher level.

Where the existing floor is badly out of level, a self-levelling compound or a new screed may be needed first; our guide to floor screeding in Singapore explains the options. Whether to overlay or remove old tiles altogether is discussed in tile overlay versus hacking.

Installation details that matter

SPC is laid as a floating floor: the planks click to each other but are not fixed to the subfloor. That means the perimeter must be left free. An expansion gap is left at walls, columns, door frames and fixed cabinetry, and covered by skirting or a perimeter trim fixed to the wall, not to the floor. Heavy fixed items, such as kitchen islands or built-in wardrobes, should ideally stand on the subfloor with the SPC laid up to them, rather than pinning the floor down.

Very long or wide runs, or floors that continue through several rooms, may need transition joints at doorways depending on the manufacturer’s limits. Planks should be acclimatised in the room before laying, joints staggered, and the floor laid in the direction that suits the light and the longest wall. At wet-area doorways, the junction should be detailed so water from the bathroom cannot run under the planks.

Care and maintenance

Sweep or vacuum grit regularly, mop with a damp rather than flooding mop, and use a pH-neutral cleaner. Avoid steam mops unless the manufacturer allows them, and avoid abrasive pads. Put felt pads under furniture and use mats at entrances. Wipe up standing water so it does not track into joints.

Frequently asked questions

Is SPC flooring waterproof?

The planks themselves are highly water-resistant and will not swell like timber-based laminate. The floor as a whole is not a waterproof barrier, because water can pass through joints and edges and sit underneath. It suits kitchens and living areas but is not a replacement for proper bathroom waterproofing.

Can SPC flooring be laid over existing tiles?

Often yes, provided the tiles are firmly bonded, dry and flat within the manufacturer’s tolerance. Loose, hollow or uneven tiles should be fixed or levelled first, otherwise the click joints may flex and fail over time.

Why are my SPC planks separating or peaking?

Gapping and peaking usually come from an uneven subfloor, a missing expansion gap, the floor being pinned by fixed furniture or skirting, or strong heat from direct sunlight. The cause should be identified before planks are reset.

Is SPC flooring better than vinyl or laminate?

SPC is more rigid than flexible vinyl and more water-tolerant than HDF-cored laminate, which makes it a practical all-rounder for Singapore homes. Laminate can offer a harder, more timber-like surface, and glue-down vinyl can sound more solid. The best choice depends on the room and the subfloor.

Dealing with popping tiles, an uneven slab or a leak beneath your floor before new flooring goes down? Talk to our consultancy or get in touch.