About this product
weber.floor 4635 design ground stone is a pump able cementitious screed material from maxit with dark hard aggregate granules added to the compound. After curing the topsurface can be grinded and polished to a high gloss by using HTC diamond grinding equipment. The grinding is performed until 1 3 mm dark granules appear to a lighter background. The background colour can be pigmented. The finished surrface resembles to grinded and polished natural stone.
Field of application
weber.floor 4635 design ground stone is primarily dedicated to be used in localities with foot traffic as shops, exhibitions halls, light industry etc. The substrate is concrete or similar material. After installation, grinding and impregnation, the material forms a jointfree easily mantained floor, friendly to walk on.
Technical data
Pre-treatment
For treating and cleaning flat substrates grinding with HTC diamond grinding equipment is recommended. With this equipment the substrate is cleaned and smoothed (levelled). When cleaning uneven substrates alternative methods as scrabbling, vacuum blasting or high pressure cleaning can be used. For levelling and smoothing at smaller levelling requirements weber.floor 4160 fine flow rapid is recommended. For greater levelling requirements weber.floor 4600 industry base or weber.floor 4360 base flow rapid is recommended. Weak substrates is compensated by stabilizing the substrate under duro stone. A reinforcement net with steel 5 mm steel rods and 150 mm mesh which is installed on the substrate. The net is covered with 15 20 mm levelling compound weber.floor 4600 industry base or weber.floor 4360 base flow rapid. Priming: A fully covering thin primer film is wanted. The priming is done in two steps. Step 1: dilution 1 : 10 The primer is spread affluently, the excess primer is scraped away by a rubber scrape or a soft brush. Step 2. Dilution 1:3 The surface is moistened over the whole surface with a short haired mop, rubber scrape or soft brush. The temperature of the substrate must be at least 10 degree celcius.
Substrate
The screed is meant to be applied to concrete substrate or similar material. The surface strength shall be at least 1,5 MPa. Be observant on movement joints, cracks in the substrate. For example is there an dilatation joint in the substrate, the same must be arranged for in the screed. Uneven substrates shall always be levelled. The substrate of the screed shall both be flat and even in detail. It is not enough that the substrate is flat, it must be so even in detail that it is possible during the installationt to control the thickness with a precision of + 1 mm
Preparation and priming
The substrate should be clean, free from dust, cement , grease or other impurities that might prevent adhesion. The substrate should be primed twice using weber.floor 4716. The first priming should be diluted 1:5, the second 1:3 (on weber.floor 4600 industry base, 1:10, 1:3). The primer should be dry and have formed a film before laying with weber.floor 4650 design colour. The temperature of the substrate during application should exceed +10°C.
Mixing
The assessment of correct consistency(correct watercontent) must be done before the start of installation. Do always have sufficient containers to dispose failed material. Equip the hose with a static postmixer at the end of the hose. The room temperature skall not lie under 10 and not above 25 degree celsius. Massan is installed in strips in the same way as an ordinary levelling compound. The compound have very little flow (flowrate 190 200 mm with the ring 35 x 68 according to maxit standard). During the installation the compound is raked with leafrake with soft strokes perpendicular to the laying strips in order to distribute the hard aggregate as evenly as possible. The screed layer thickness (10 12 mm is recommended) is controlled continually during the installation with a folding rule. At the right water content the topsurface is flat but has a rough structure from the hard aggregate granules. If the compound is installed with too a high water content, this not only means a lower strength but one have to grind away more material to reach the hard aggregate. The floor also becomes more difficult to grind. The concentration of fine material and polymer make the material difficult to grind.
Mixing Equipment
Mixing and pumping equipment i under consideration. Here is the latest experience recorded. Mtec Duomix 2000 40 m hose length, hose diameter 32 mm. Static post mixer, leafrake, specific pumptruck. The hose shall always be well lubricated before the pumping and shall always use a cleaning ball when the recidue compound is pressed out of the hose at the cleaning procedure after the pumping. The fresh compound must not come in direct contact with the cleaning water. The cleaning water can wash out fine material out of the compound and remaining coarse aggregate may form agglomerates that plug the hose.
After Treatment
At room temperature 20 degree celsius the grinding of the top surface can be started 24 hours after the installation of compound. At 10 degree one have to calculate with a curing time of 3 days.
Drying time
Foot traffic 3-5 hours
Forklift wheeled traffic after 24 hours
Full traffic after 7 days
The floor coating/sealer can be installed after 24 hours depending on the layer thickness, drying conditions and product to be us
Storage and Shelf life
Storage time in dry conditions and closed packages is 6 months. For deliveries in bulk the store time is 3 months.
Practical Advice
Colour variations in the finished surface can occur due to a number of factors such as
(i) the product is formulated from cementitious binders with mineral pigments and colour variations can result due to differing ambient conditions during application,
(ii) the method of installation can occasionally result in hose lines in the finished surface,
(iii) Any future repairs to the surface may result in variations in colour and texture.
Health and Safety
Hazardous – contains cement, which is alkaline when wet and can cause skin irritation. Use eye protection, gloves and barrier cream and avoid prolonged skin contact. Avoid inhalation of dust.Wash skin contamination away with warm, soapy water. Remove splashes to the eyes by prolonged irrigation and consult a doctor. Do not ingest. Refer to Health and Safety Data Sheet.
Technical services
Weber's Customer Services Department has a team of experienced advisors available to provide on-site advice both at the specification stage and during application. Detailed specifications can be provided for specific projects or more general works. Site visits and on-site demonstrations can be arranged on request.
Technical helpline
Tel: (01525) 722110
Fax: (01525) 718988
Sales Contact
Weber products are distributed throughout the UK through selected stockists and distributors. For UK sales enquiries and overseas projects, contact Weber's Sales office.
Sales office
Tel: 08703 330070 (Press 1 for Sales) Fax: (01525) 718988
