Which screed is right for you?
There is a wide variety of screeds available and choosing the correct type for your project can get confusing. Here we will try and simplify and give you some examples to help you get an idea of which screed would be correct for you.
Free flowing, self leveling Anhydrite screed.
This product is rapidly growing and is now the most commonly used. Here at Mitchell Plastering we would advise to use this product for projects such as houses and extensions, nursing homes, care homes, apartments, shops, offices and many more.
Anhydrite screed can be layed at a minimum of 25mm to an existing concrete slab and a minimum of 40mm is required if layed onto insulation.
There are a few different methods used while using this screed:
a primer or bonding agent is applied directly to the subfloor then screed will be layed.
his method is commonly used if the required depth is under 40mm.
this method is achieved by using a polythene layer to separate the existing concrete and the screed. If a depth of 40mm or greater is required then this method would be advised.
this term is used if screed is to be placed onto insulation. A damp proof membrane (dpm) would normally be layed before insulation then another polythene separating layer before the screed is applied. This method is most commonly used in residential builds to achieve the required thermal conductivity.
Anhydrite screed is also the best product to use with underfloor heating. Further information on this is displayed on our underfloor heating page.