webermineral TF

Prepare

To ensure colour consistency, the material required for complete and adjoining panels should be of the same batch number or be thoroughly mixed together before use.

Agree an acceptable finish appearance on a sample area with architect or supervising officer before proceeding with large-scale application.

Prime the prepared surface with weber PR310 applied by brush or spray. Ensure complete coverage of wall to reduce suction of the background. weber PR310 is of low viscosity and easily applied. Check batch numbers and colours of the material required to complete working area. Stir well in bucket and if required, make minor adjustments to workability with a small splash of water, thoroughly mixed in.

Mix

Water addition: 3.40 – 4.40 litres/20 kg bag. Clean potable water – no other additives.

Mix the webermineral TF with a paddle mixer. Do not over-mix. If the material has been allowed to stand for 5-10 minutes, it may be necessary to remix (do not add water) immediately prior to application.

Apply

Apply webermineral TF with a steel float and hawk to work area. Use a thin plastic float to finish webermineral TF. Evenness of cover and texture are of paramount importance. Maintain a steady flow of application and keep a wet edge on all incomplete edges.

webermineral TF will set and gain hardness in a similar manner to all conventional mineral renders and in common with all other mineral renders, newly applied render must not be allowed to dry out too quickly i.e they must be allowed to cure and fully hydrate. Therefore in extreme hot weather conditions it may be necessary to protect the newly applied render from the sun and drying winds.

Refer to BS EN 13914-1:2005 Design, preparation and application of external renders and internal plastering.

The workability characteristics of the product specifically relating to setting will be reflected by the local ambient climatic conditions. Consideration should be given to a shorter working open time in temperatures leading up to 20°C and beyond, this will diminish further if combined with a drying cross wind during application. Working in warm direct sunlight should be avoided at all times, as the ability to maintain a flowing edge and a consistent texture will become progressively harder.

If these types of conditions are anticipated we would suggest that the intended works are assessed to create manageable sized working panels and/or the number of available operatives is increased to carry out the application effectively. Alternatively please select another decorative finish from the Weber portfolio.