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CES Floor Screed Range

CES Quarry Products Ltd specialises in a wide range of floor screeds to offer you the best solution for your project, whether that is speed, ease of application, or price, or somewhere in between. Whatever the requirement, CES will has a quality floor screed solution for you and CES floor screed experts whom will guide you to the best product solution required.

CES CEMENT BASED LIQUID SCREED

Description

Description

There are 3 different products available in this range:

  • C16/F3 - for domestic non underfloor heating
  • C20/F4 - for domestic and underfloor heating
  • C25/F5 - for commercial use

Tile on after only 4 days (if no underfloor heating) using a green screed adhesive!

Cement based screeds are very responsive to underfloor heating; due to the fact that they can be laid in very thin sections and have a high thermal conductivity of up to 2.9w/mk.

Since this product is a cement based screed; floor coverings can be applied much faster than calcium sulphate screeds which require a final moisture content of 0.5% which can delay floor finishing’s by months.

Whereas CES cement based screed can be tiled at a final moisture content of 5% and timber floors can be installed at a final moisture content of 2.8%; speeding up the entire build process.

Compared with other liquid screeds which generally need to be forced dried with underfloor heating; cement based screeds can be used in non-heated floors as it doesn’t require force drying to remove moisture.

KEY BENEFITS

  • Thinner sections compared to traditional screeds. 25mm above underfloor heating pipes.
  • Larger floor area without joints (up to 150m2).
  • Exceptional Thermal Conductivity (up to 2.9W/m.k).
  • Reduced drying times: 5 days for tiling and 28 days for wooden floors in non-heated floors, in heated floors 14 days for tiling and 21 days for wooden floors. This is dependent on drying conditions or “after suitable moisture test.
  • Self-compacting – no voids around under floor heating pipes.
  • All floor coverings can be applied with no need for surface sanding.
  • More thermal insulation can be used in floors, compared to traditional sand cement screed which leads to a better u value for your building.
  • Minimal Drying Shrinkage (<0.05%).
  • Foot traffic after 24 hours.
  • Can be applied in wet areas.
  • Can be forced dried after 7 days.
  • Compatible with all cement based tile adhesive, no priming of surface required.
  • No Surface Laitance (Dust) after curing.
  • Easy Installation; up to 1000m2 per day (Reduces time & costs).
  • Lower Running costs for underfloor heating systems when using Cemfloor. This is due to the exceptional thermal conductivity of up to 2.9W/mk and the ability to lay thinner screeds over the underfloor heating pipes.

SUBSTRATE

CES cement based screed is designed for use as a bonded thick levelling screed on concrete, as a floating screed over thermal or acoustic insulation, or as an unbonded screed on top of a plastic membrane.

FLOOR COVERING

Is compatible with all floor coverings and cementitious adhesives and floor levellers.

APPLICATION

Should be used in accordance with BS 8204-7:2003 ‘Code of Practice for Pumpable Self-Smoothing Screeds’.

To ensure a high quality screed it is recommended that application is carried out by a specialist screeding contractor. The freshly poured screed will need to be levelled using a dappling bar, ensuring to dapple the surface in two passes at 90 degrees.

TECHNICAL INFORMATION

CES cement based liquid screed produced in an ISO 9001 quality-controlled environment. And meets the requirements of EN 13813:2002 ‘Screed Material for Floor Screeds’.

Screed SpecificationEN 13813:2002
Compressive Strength >20 N/mm2
Flexural Strength >5 N/mm2
Minimum Thickness

Bonded: 20mm

Unbonded: 30mm

Domestic:35mm

Commercial: 40mm

Over underfloor heating pipes: 25mm above pipes

Shrinkage (28 Days) <0.05%
Flow Rate 220-250mm
Thermal Conductivity up to 2.9W/mk
Fire Rating non-combustable
Drying Time (5% MC) 10-15 Days (can be force dried after 7 days)
Open to Light Foot Traffic 24 Hours
Wear resistance "BCA" see website
uValue Calculator

Liquid Screed u Value Calculator

Perimeter = (Length A + Width A + Length A + Width A) + (Length B + Width B + Length A + Width B)

Area = (Length A x Width A) + (Length B x Width B)
















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Preparation

Preparation

Before the screed can be installed the building should have the roof on, external doors and windows in place and be completely draught free and weather-tight.

Subfloor Preparation

Make sure the subfloor is laid flat and at the correct level to accommodate the insulation, liquid screed and the floor coverings. To help prevent leaks when the liquid screed is being poured, make sure all gaps and holes have been completely sealed. Remove all debris from the subfloor so that the insulation sheets can be laid flat.

Installing Insulation

Cut the first layer of the insulation around service pipes and fill in the gaps between the insulation and the pipes with a low strength sand & cement mortar. Place the second layer of insulation perpendicular to the first. When you walk on the second layer of insulation there should be no movement between the two layers and the surface should remain flat.

Edging Strip

The edge strips should be as recommended by building control. Install the edging strip to the perimeter of all walls, abutments and columns, ensuring it is tightly secured. Pay special attention to the corners.

Plastic Tanking Sheet

Before the liquid screed is poured a water proof tank must be created on top of the insulation sheets. Lay 500 gauge polythene, without creases, on top of the insulation, with the polythene sheet joints overlapped by at least 100mm and secured with the appropriate tape. Tape the polythene sheet to the edging strip. Check all the joints are watertight and all protruding pipes are securely sealed to the polythene sheet.

Underfloor Heating Pipes

Once the tanking sheet is in place install the underfloor heating pipes, clipping them down every 300mm on straights and every 200mm on bends. Fill the heating pipes with water.

Expansion Strips & Reinforcing

All joints should reflect structural joints in the substrate and take into account the joint requirements in finished floor coverings. Place expansion joints across doorways between independently controlled heating circuits, between heated and unheated areas and in areas of high thermal gain. See our ‘Design Data’ sheet for the full guide to recommended bay sizes. Keep the expansion strips 5mm below the planned level of finished screed. Place and secure reinforcement fabric at external corners.

Hot Weather Protection

During a period of hot weather the windows should be blanked out to prevent excessive heat building up in the building prior to, during and after the liquid screed installation.

Final Checks

Pressure test the underfloor heating system and check for water leaks. Examine the polythene for tears and check all joints are properly taped. Confirm that all the areas prepared for the liquid screed are in a fit condition to accept the liquid screed, without leaking. Remove all loose material that could float to the surface of the liquid screed and spoil the floor finish.

 

RAPID DRYING SCREED

CES Quarry Products Ltd specialises in, and stocks a wide range of floor screeds. Providing you the best solution for your project, whether that is a need for speed, ease of application, or price. CES employ floor screed experts that will guide you in selecting the right floor screed solution for your project. And we also offer a second-to-none supply and lay service option, which means we take care of all your floor screed needs. Enquire today to speak with one of our floor screed experts.

Description

Description

Ideal for projects on a tight deadline, or just to speed things up.

  • Rapid drying, tile in as little as 2-5 days
  • Timber flooring in 2-3 weeks
  • Batch mixed to allow constancy of both the product and performance
  • Only installed by approved layers in Northern Ireland
  • 25 year Bal/Ardex Guarantee available
  • 10 year Dunlop guarantee

 

CES Traditional Screed

Description

Description

Our traditional screed is manufactured to BS EN 13813 and made from a blend of sands, CEMII cement and retarding agent as standard, which makes for a screed that is easy to level and finish, providing a level base for the follow on trades.

Heavy Duty Screed

This is a higher strength screed and incorporates a fine aggregate to increase impact and abrasion resistance necessary, in heavily trafficked areas.

Fibre Screed

This is a traditional screed, with the addition of polypropylene fibres, which can be used as a replacement for non-structural steel mesh. The introduction of fibre into the screed reduces plastic shrinkage, increases the screed bond and increases the impact and abrasion resistance.

Fast Drying Screed

We can offer a plant batched fast drying screed with drying times from 14 days upwards depending on depth, ambient temperature and relative humidity. This fast drying screed allows jobs to be fast tracked and allows floor coverings to be applied long before standard screed.

Download CES Traditional Screed Brochure

Technical Specs

Technical Specs

Screed
Description
Min Depth
Unbonded
Min Depth
Floating
Min Depth
UFH
Drying
Rate*
Days to dry
Floating Floor
Thermal
Conductivity
STANDARD SAND : CEMENT SCREED 80mm 100mm 100mm 1mm/day (1st 40mm the 0.5mm/day 160 Days 1.1W/mK
HEAVY DUTY SAND : CEMENT 80mm 100mm 100mm 1mm/day (1st 40mm the 0.5mm/day 160 Days 1.1W/mK
FIBRE REINFORCED SAND : CEMENT 65mm 75mm 75mm 1mm/day (1st 40mm the 0.5mm/day 110 Days 1.1W/mK
QUICK DRYING SAND : CEMENT 75mm 75mm 75mm 3.5mm/day 21 Days 1.1W/mK

*Drying rates are based on temp of 20 degrees Celsius and RH 60%.

Deliveries / Collection

Deliveries / Collections

Deliveries are made mostly by tipper truck and service the greater Belfast area and the majority of counties including Down, Antrim and Armagh. As per concrete collection, no prior notice is required as we have a pan mixer dedicated to screed.

For further information or advice on your floor screed needs please give us a call on 028 9751 9494. Alternatively see our Supply & Lay flyer or our CES Liquid Screed flyer for further products and services available from CES.