A properly level screed is essential for a durable floor finish. When screed is uneven, it can lead to problems such as cracked tiles, uneven flooring, or trip hazards. Screed is designed to create a flat base before the final flooring is installed.
UK standards measure flatness using Surface Regularity (SR):
- SR1 – maximum 3mm deviation
- SR2 – maximum 5mm deviation
- SR3 – maximum 10mm deviation
Liquid screed installations often achieve SR2 or better, while traditional screeds may fall closer to SR3.
Why flatness matters
Uneven screed can damage flooring materials, create wear points, introduce safety risks, reduce heating efficiency, and lead to warranty issues if tolerances are exceeded.
Common causes
Common causes include poor preparation, incorrect mixing ratios, rushed installation, lack of rolling, and unsuitable environmental conditions during installation.
Fixing uneven screed
Grinding or applying levelling compounds can correct minor deviations. More serious cases may require removal and replacement of the screed.
Why choose Floor Screeding Essex?
Floor Screeding Essex delivers professional screeding services across Essex with a focus on accurate installation and reliable results.