This website uses cookies to ensure that we give you the best experience on our website.
By continuing to browse the site you are agreeing to our use of cookies. To find out more click here

Weber Saint-Gobain - Official website of the company

weberfloor 4655 industry flow rapid

weberfloor 4655 industry flow rapid
weberfloor 4655 industry flow rapid

Product Benefits

● Industrial floor applications ● New and refurbishment projects ● Levels and smooths in-situ and precast concrete ● Can be used on a wide range of substrates including new and old concrete

A fast drying, self-smoothing, industrial floor screed and resin base (cover after 1 day)

Product Features

About this Product

weberfloor 4655 industry flow rapid is a cement-based pumpable selflevelling screed for use as a surface layer on industrial flooring applications. It is supplied as a pre-blended, dry powder for application of a thickness of between 4 - 15 mm

weberfloor 4655 industry flow rapid is designed as a rapid drying, levelling layer which is also suitable for the application of epoxy and polyurethane coatings in industrial applications on both new and old concrete for new and refurbishment projects. It can be used to level and smooth a wide range of substrates, including in-situ and pre-cast concrete.

Features and Benefits

▲ Pumpable - rapid and ergonomic application ▲ Rapid hardening - enables quick installation ▲ Flat floors - minimises wear ▲ High durability towarads mechanical stress - long lifetime ▲ Resin base - adaptable to different environments ▲ Low alkalinity ▲ Casein free ▲ Low natural emissions

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


weberfloor 4655 industry flow rapid is designed primarily for use on concrete substrates. If the substrate is suitably dry, the resin finish can be laid after 24 hours (for a 10 mm layer in good drying conditions). The substrate should have a surface tensile strength of at least 1.5 N/ mm2.


Send or download the documents

You can either send the documents to an email address, or download it

Preparation & Application



weberfloor 4655 industry flow rapid is designed primarily for use on concrete substrates. If the substrate is suitably dry, the resin finish can be laid after 24 hours (for a 10 mm layer in good drying conditions). The substrate should have a surface tensile strength of at least 1.5 N/mm².

Preparation and priming

The surface to be treated must be hard, sound and free from surface contamination. Laitance, old coatings and contaminants should be removed mechanically, by enclosed shot blasting or scarification. All dust and debris should be vacuumed from the surface. Shrinkage in newly cast concrete should have stopped, as reflective cracking could otherwise occur.

weberfloor 4716 primer should be applied to the prepared surface using a soft brush or a primer pump, avoiding ponding, and allowed to become touch dry (3 - 4 hours under good conditions or overnight dependent upon conditions).

After application, and whilst the primer is still fresh, it should be lightly brushed to ensure a complete uniform film has been applied. The function of the primer is to improve adhesion to the sub-floor, to prevent air bubbles and to prevent de-watering of the floor compound before hardening.


weberfloor 4655 industry flow rapid should be applied using a mixer pump approved by Weber.

The material is mixed with 21% water, which corresponds to approx. 5.25 litres per 25 kg bag. Do not use excess water, because the strength of the underlayment will be reduced. Ensure that the material is correctly mixed and free from separation. The temperature of the mix should ideally be between +15°C and +20°C.

For hand application, mix the material thoroughly for 1 - 2 minutes using a powerful mixer tool.


Light ventilation in the work area is necessary but windows and openings must be closed sufficiently to avoid draughts during and after application. Indoor and floor temperature must exceed +10°C during and after application and for one week after that. The relative humidity of the concrete floor must not exceed 95%. Dehumidifiers must not be used for the first 72 hours.

The maximum width of the pumpable area varies from 6 - 8 metres depending on the pump capacity and application thickness. Wider areas can be temporarily divided with stop-ends. Pumping is carried out in sections so that a new section is pumped as quickly as possible in order to maintain a wet edge. A wide spatula or spiked roller should be used to assist the self levelling process.

Drying Time

The screed can receive foot traffic after a drying time of 1 - 2 hours at an ambient temperature of +20°C. The floor covering can be installed after 24 hours depending on the layer thickness and drying conditions. High humidity of the substrate and poor drying conditions prolong the setting time.

Packaging, Health & Safety


weberfloor 4655 industry flow rapid is packed in 25 kg bags on a plastic-wrapped pallet.

Storage and Shelf Life

When stored unopened in a cool, dry place at temperatures above 5°C shelf life is 12 months from date of manufacture.

Health and Safety

Contains cement (Contains chromium (VI). May produce an allergic reaction). Harmful by inhalation. Irritating to eyes and skin. Keep out of the reach of children. In case of contact with eyes, rinse immediately with plenty of water and seek medical help. After contact with skin, wash immediately with plenty of soap and water. Wear suitable protective clothing, gloves and eye/face protection.

For further information, please request the Material Safety Data Sheet for this product.

Health and Safety

Low alkalinity

Recyclable raw materials

Low emissions

Casein free

Low natural emissions