Anhydrite grades for Stamford plots and apartments
Calcium sulphate screeds are graded with a CA code. In that code C gives compressive and F gives flexural strength, each in N/mm2, following the European screed standard. For lightly used rooms at home the grade is CA-C20-F4, for the bulk of houses, flats and offices it is CA-C25-F5, and CA-C30-F6 goes where wear is heavier. On Stamford North, Stamford East and the Bellway plots north of Uffington Road, the developer's engineer sets the grade, and we pour what the drawings name. Some drawings call up an alpha hemihydrate product instead, picked for quicker drying or a thinner floor. Each of those has its own product sheet, and depths and drying times follow that sheet rather than the general rules that apply to standard grades. What makes the material useful in practice is how little it shrinks. Bays can be big with only a few joints, which works for open ground floors and for flats alike. Around 10% of Stamford's homes are purpose-built flats, and a block's floors are well suited to calcium sulphate: large areas poured in a single visit, over insulation and often over heating. Some joints are still required, at certain doorways and where heating zones meet, so the layout is drawn up before pouring. Our guide anhydrite screed explained covers how the material behaves.
Before flooring goes down on Stamford anhydrite
Looking dry does not mean a calcium sulphate floor can take flooring yet. As the screed cures, laitance, a thin and weak skin, forms on the surface. It must be sanded off, or adhesive grips the crust rather than the screed and the finish can fail, sometimes months after the fitter has left. Once sanded, it gets a primer made for calcium sulphate. Moisture limits are stricter than many expect. Flooring makers often want calcium sulphate drier than cement, so our readings come from a hygrometer, not a count of days. If heating pipes are in the floor, forced drying can normally start after about 7 days. There is one firm rule. It must not go where a floor could stay wet, so a shower room or a utility that might flood takes a cement based flowing screed or a hand-laid cement screed for wet rooms. If an older base needs work first, see floor preparation. For a project in Oakham, about 10 miles away, see anhydrite screed in Oakham.
Anhydrite & Flow Screed prices in Stamford
Liquid flowing screed (which includes anhydrite): £24 to £31 per m² supplied and laid (MyJobQuote, August 2026), so £960 to £1,240 for 40 m². MyJobQuote does not say whether these figures include VAT. See our floor screeding cost guide or screed calculator.
Who lays your anhydrite and flow screed in Stamford
K & B Screeding’s own team, led by director Donatas Bardisevicius. Founded 2019, company 12298780.
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Anhydrite & Flow Screed from Slough to Stamford
Stamford is about 77.7 miles north of our Slough base as the crow flies, with postcodes including PE9. The nearest towns to it are Oakham (10.5 miles), Peterborough (11.4 miles), Corby (14.7 miles) and Whittlesey (16.3 miles).
More on anhydrite screed, part of our screeding services.