Basic Advice When Installing Resin & Cementious Floors
Steve Price, building product manager at Mapei, looks at the essential considerations when installing resin and cementitious flooring:
IN recent years, the popularity of cementitious and resin flooring has risen massively due to the products’ strength and versatility.
Often utilised for industrial flooring, the main benefit of cementitious and resin flooring systems is that they can be locked both mechanically and chemically into the substrate, thus becoming an integral part of the structure and providing a long lasting, hard wearing surface.
When planning a new resin or cementitious industrial floor there are key questions that determine product choice and type of installation. For example, a cementitious floor system can have a natural look and feel, often suited to inhabited spaces, domestically and commercially. However, this natural look can cause concern when a uniform appearance is required, in which case a synthetic resin floor is a good alternative.
Loads on the floor also determine the final choice. If an excessive load is anticipated a cementitious system may prevail over resin due to its inherent high abrasion resistance. That said, cementitious binders can be combined with polyurethane to produce very tough wearing floors.
When considering the substrate, it must be sufficiently robust, clean and dry to accept the flooring finish, whether cementitious or synthetic resin. The minimum substrate compressive strength should normally be over 20N/sq mm whilst the pull off strength should be over 1.5N/sq mm. The moisture content should
generally be below 4% by weight. These values can only be determined by tests which should be part of the initial site survey.
Application planning is vital. Primers, intermediate layers and protective coatings must all be allowed to cure correctly and remain uncontaminated during this period, therefore complete areas are normally isolated from site traffic until the floors are finished and protected.
Guides to selection of appropriate type of flooring and on specification and installation are available from FeRFA, Resin Flooring Association. Mapei is a FeRFA member and offers support in terms of training, site visits, specification advice and supply of both finished samples and products.
This article has been reproduced from the Contract Flooring Journal website. You can find them at www.contractflooringjournal.co.uk.