A multi-component, water-based coloured polyurethane hybrid screed with self-smoothing properties. It has a smooth, matt, impervious, hard wearing surface and is typically installed at 3 - 6 mm thickness.
Professional use only - from the 24th August 2023, adequate training is required before industrial or professional use of this product.
Should you require training, visit - https://www.safeusediisocyanates.eu/
Professional use only - from the 24th August 2023, adequate training is required before industrial or professional use of this product.
Should you require training, visit - https://www.safeusediisocyanates.eu/
Medium to heavy duty self-smoothing polyurethane screed.
Substrate Quality / Pre-Treatment
The surface must be clean, dry and free of all contaminants such as dirt, oil, grease, coatings and surface treatments, etc. All dust, loose and friable material must be completely removed from all surfaces before application of the product, preferably by vacuum. Pull of strength shall not be less than 1.5 N/mm2. If in doubt apply a test area first.
Mixing
Premix part A with a low speed electric stirrer and then add part B and mix for 30 seconds. For the colourpack version, premix part A neutral with a low speed electric stirrer and add part D to it. Mix until a uniform colour is achieved. Ad part B and mix for 30 seconds. Use a double paddle (axis) mixer and gradually add part C (aggregate) to the mixed resin. Allow part C to blend for further 2 minutes minimum, to ensure complete mixing and a uniform moist mix is obtained. During the operations, scrape down the sides and bottom of the container with a flat or straight edge trowel at least once (parts A+B+C) to ensure complete mixing. Mixing Tools Use a low speed electric stirrer (300 - 400 rpm) for mixing parts A and B. For preparation of the mortar mix use a double paddle mixer.
Application
Prior to application, confirm substrate moisture content, relative humidity and dew point. As a scratch coat Sikafloor-21 PurCem can be applied using a steel trowel. As a body coat Sikafloor-21 PurCem can be applied using a toothed trowel or pin screed, to the desired thickness, or a steel trowel. Remove air with a spike roller. For further details please refer to the related system data sheet.
Cleaning of tools
Clean all tools and application equipment with Thinner C immediately after use. Hardened / cured material can only be mechanically removed.
Do not apply to PCC (polymer modified cement mortars) that may expand due to moisture when sealed with an impervious resin.
Always ensure good ventilation when using Sikafloor- 21 PurCem in a confined space, to prevent excessive ambient humidity.
Freshly applied Sikafloor-21 PurCem, must be protected from damp, condensation and direct water contact (rain) for at least 24 hours.
Protect the substrate during application from condensation from pipes or any overhead leaks. Do not apply to cracked or unsound substrates.
Always allow a minimum of 48 hours after product application prior to placing into service in proximity with food stuffs.
Products of the Sikafloor-PurCem product range are subject to discolouration when exposed to UV radiation. Extend depends on colour. There are no measurable losses of any properties when this occurs and it is a purely aesthetical matter.
Products can be used outside provided the change in appearance is acceptable by the customer. In some slow curing conditions, soiling of the surface may occur when opened to foot traffic, even though mechanical properties have been achieved. It is advised to remove dirt using a dry mop or cloth.
Avoid scrubbing with water for the first three days.
Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.
Sikafloor 21 PurCem is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.
Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.
Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.
All delivery costs below are excluding VAT
Sika Thinner C is a specially formulated blend of solvents designed to mix with its compatible Sika products to create an optimal consistancy for application whether it be for brush, roller or spray. It can also be used for the cleaning of some surfaces prior to application of the coating and/or cleaning of the application tools such as...
£54.38 (incl. VAT)
£45.32 (ex. VAT)
