Liquid Screed vs Traditional Sand and Cement Screed

Liquid screed is pumped into place as a flowing mix and levels itself across the floor. Traditional sand and cement screed is a stiffer mix that is spread, compacted and levelled by hand. Both create a base for your floor finish, and the right choice depends on the project, the floor build-up, whether underfloor heating is involved and the area being screeded.

Cotswold Flow Screed specialises in pump-applied liquid screed across Gloucestershire, Worcestershire, Warwickshire and the Cotswolds from our base in Evesham. This guide explains how the two compare, including when traditional screed may suit your project better.

What liquid screed is and how it is laid

Liquid screed arrives on site ready-mixed and is pumped through a hose into the building. As it is poured, it flows across the floor, around any underfloor heating pipes and into corners, and levels itself. Levels are checked as it is placed.

There are two main types. Gyvlon is an anhydrite screed with a calcium sulphate binder, and Cemfloor is a cement-based liquid screed. Our guide to Gyvlon vs Cemfloor explains how they differ.

What traditional sand and cement screed is

Traditional screed is a mix of sand, cement and water, usually kept fairly dry so it holds its shape. It is mixed on site or delivered ready to use, then barrowed into place, compacted and levelled by hand using screed rails and a straight edge.

It is a long-established method that many builders are familiar with, and it can be laid bonded to a slab, unbonded on a membrane or floating over insulation.

Liquid and traditional screed side by side

How it is mixed and delivered

• Liquid screed: ready-mixed and delivered to site, then pumped
• Traditional screed: mixed on site or delivered as a semi-dry mix

How it is laid

• Liquid screed: pumped through a hose and poured across the floor
• Traditional screed: barrowed in, spread and compacted by hand

How it is levelled

• Liquid screed: self-levelling, with levels checked during the pour
• Traditional screed: levelled by hand with rails and a straight edge

Underfloor heating

• Liquid screed: flows around the pipes as it is poured
• Traditional screed: compacted around the pipes by hand

Floors that need a fall

• Liquid screed: not normally used, because it levels itself
• Traditional screed: can be laid to a fall towards a drain

Typical projects

• Liquid screed: extensions, new builds, renovations and larger floor areas
• Traditional screed: small areas, patch repairs and floors laid to falls

Projects where liquid screed is often chosen

Liquid screed is commonly chosen for:

• Floors with underfloor heating, because it flows around the pipework. See our guide to liquid screed for underfloor heating.
• Extensions and new builds, where a whole floor can be poured in one visit.
• Larger or open-plan areas, where pumping avoids barrowing material through the building.
• Renovations with limited height, where a liquid screed such as Cemfloor Level Plus can often be laid thinner than traditional screed.

When traditional screed may still be the better fit

Liquid screed does not suit every floor. Traditional sand and cement screed is often the better option for:

• Very small areas or patch repairs, where setting up a pumped pour may not be practical.
• Floors that need a fall, such as level-access showers and some wet rooms.
• External areas, which liquid screeds are not normally used for.
• Projects where it is specified by an architect or engineer for a particular reason.

If part of your project falls into one of these, mention it when you enquire. The team can advise which areas suit liquid screed and which may need a different approach.

What to ask before you decide

These questions will help you, your builder and the screed contractor agree the right approach:

1. Is underfloor heating being installed?
2. How large is the floor area, and is it one space or several rooms?
3. How much depth is available to the finished floor level?
4. Does any area need to fall towards a drain?
5. What floor finish will go down, and when?
6. Can a delivery vehicle and pump get close to the building?

Cost depends on all of these. Our guide to how much liquid screed costs explains what makes up a quote.

Get a quote for liquid screed

Cotswold Flow Screed covers Gloucestershire, Worcestershire, Warwickshire and the Cotswolds from Evesham. Send your location, floor area, screed depth if known, and whether underfloor heating is involved, and the team will advise whether liquid screed suits your project and come back with a quote. Request a quote online or call 01386 577010.