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SURFACE REGULARITY

The class of regularity should be selected from the table below depending on the final use of the floor.  The class is determined by the type of finished flooring to be applied.

Surface Regularity Table –

ClassMaximum Permissible Departure from a 2m Straight Edge (mm)Application
SR13mmHigh standard floors, for special use
SR25mmNormal standard floors, for use in commercial and industrial buildings
SR310mmUtility standard floors, where surface regularity is less critical

As specified by the Construction Industry Research and Association (CIRIA), direct impairment includes immediate problems such as:

  • Trip hazards to pedestrians
  • Excessive sway or wear and tear on wheeled traffic
  • Difficulty in installation of specified equipment on the floor
  • Ponding in wet areas
  • Aesthetic effects at skirting

Assessment of surface regularity of screed using a straightedge –

According to British Standards, Surface Regularity is defined as the deviation in height of the surface of a flooring layer over short distances in a local area. In simpler terms, it is the ‘flatness’ or ‘measure of waviness’ of the screeded surface. To facilitate easy assessment of the flatness of the floor screed, the extent of surface regularity of the screed is generally expressed in terms of permissible departure from the underside of a 2m straightedge on legs laid in contact with the screed.

Indirect impairment includes long term problems such as:

  • Quicker degradation of floor due to increased wear
  • Impact at high spots
  • Lipped Joints

It is therefore important to confine these deviations within reasonable limits so as to ensure adequate serviceability depending on the intended use of the floor.

At CSC, we generally install floor screeds to SR2 specification. We also cater to projects that require SR1. However, it should be noted that SR1 specifications usually dictate a higher cost structure, as is documented in BS8204.

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Screed Systems

There are many products on the market and CSC have reached a high industry standard by fully understanding the science behind the installation and associated processes. We have worked very closely with our supply chain to ensure that only the best quality materials are used on all of our sites across the UK.

Live News

 THE SCREEDER’S JOURNAL

@CSCScreeding

These screed pumps are a mobile representation of our business. That’s why it’s so important that everything is clean and maintained to only the highest of standards. When you engage with CSC, you know exactly what to expect. #highstandards #dotherightthing #qualityandvalue #ukconstruction #constructionuk #cscscreeding ...

Over 2,600m2 of Isocrete K Screed on M Bond with a mechanically prepared concrete base for the H&M store in Milton Keynes. Due to site restrictions and the requirement for a narrow footprint along the rear service road, we are supplying the sand via grab loader and contained in a roll on, roll off skip. This methodology works perfectly with our Mörtel Meister screed pumps with hydraulic skip and remote control shovel. Well done team! Great work #cscscreeding #isocrete #cpguk #screedingmiltonkeynes #shoppingcentre #ukconstruction #constructionuk ...

Nearly there for this project. Traditional Fibrescreed with a pan float finish using one of our Mörtel Meister Supertrowel’s. #cscscreeding #mortelmeisteruk #supertrowel ...

First floor completed at the Meadows project in Cambridge. Bar a couple of small rooms on the ground floor, two of the four blocks are complete. #cscscreeding #screed #communitycentre #screedingcambridge ...

This is so right, in every way. #integrity #culture #dotherighthing ...

Mbond delivered and ready for redistribution to a new project in Oxford. We’ll be mechanically preparing the existing concrete slab, applying M Bond Extra and screeding with Isocrete Fast K. The area is circa 1800m2 and has a built in moveable racking system that will be used to archive documents produced in the college environment. Thank you to Morgan Sindall for entrusting CSC to deliver the project. #cscscreeding #cpguk #isocrete #approvedcontractor #flowcrete #screed #screeding #screedingoxford ...

Organisation is key to working in the screed business. Lots of bulk materials arriving to site, just in time. We always keep a reasonable level of stock to ensure we can top up as and when required. Keeping the operatives working with the minimum of downtime is the name of the game. ...

PP Fibres and Isocrete K Screed always at the ready for the CSC screed teams. It’s so important that we are prepared for all eventualities and that’s why we are always ready for work. #readyforwork #isocrete #cscscreeding #cscscreedteam #ppfibres ...

The team at CSC always carry stock of 1200g DPM and 500g separating membranes. We use these materials almost everyday of the week, so we’re always ready for work. #dpm #readyforwork #cscprepteam ...

We welcome Jacqueline to the accounts team. Having worked with Amanda for the last three months, Jacqueline is ready for the next chapter. Here’s to wishing you every success. 🎉🎉 ...

End of an era! Amanda’s last official day at CSC Screeding after 14 years. Enjoy your retirement and we wish you health and happiness. Thanks for everything, Amanda. Best wishes x ...

Service and annual vessel pressure test for three of our Mörtel Meister screed pumps. All certified and a clean bill of health. We go again….. #cscscreeding #screedcontractor #screeding #screed #mortelmeisteruk #service #certified ...

Construction Accreditations

CSC Screeding are members of Constructionline, CHAS and Builders Profile where a predefined Health & Safety questionnaire is pre-completed and our clients have direct access to the information. Documents contained in the pre-qualification system are updated throughout the year, ensuring continued compliance. We have focused on developing the business through constant innovation, implementation and collaboration. We are now ready for the business to grow with the increasing demand.