Analyse Before You Finalise
The Flooring Group brings you yet another interesting article about the moisture containment in different screeds, how to “test the waters” and how to find out when it’s good-to-go. Our London flooring professionals are going to discuss the moisture contained in anhydrite, calcium sulphate and gyvlon type screeds.
We present you with the typical scenario, imagine an open-plan commercial building with plank, beam or instu cast and a leveling screed has been recently poured over. The customer asks our London flooring technicians and wants to know immediately when they can move their equipment in and start their business in the facility. That’s probably the best scenario for the main contractor, as when installed correctly, leveled and smoothened out and the thickness is between 25-35mm. The drying time is significantly smaller and the client can move in after 24 hours. This can be installed with ease both in commercial and domestic properties.
The development of the screed hasn’t ended there, the manufacturers of an underfloor wet heating system took interest and made a combined product that complies with the screed flawlessly, as it distributes evenly and efficiently over the whole surface. The only cons, being that the screed gained some thickness, sometimes more than 70mm. This resulted in a major drying time increase. Anhydrite screeds dry from the bottom, forcing mobile moisture upwards. As the top surface is very important in order to proceed work.
London flooring experts highly suggest the most optimal method – Hygrometer boxes, make sure the meter stays high, once it has dropped it is good-to-go. Don’t take the risk and lay floors promptly as some areas might not be dry yet, using electronic radio frequency type meter might come in handy in the later stages.
The Flooring Group can add that in the conventional sand and cement screed there is a protection system preventing from moisture, such systems have been developed for anhydrite screed but we have not yet developed a professional view on those. For more helpful articles make sure to visit our archive!