Keim Lotexan
Application

Suitable for use on unpainted surfaces.

Description

A siloxane-based, clear, dust suppressant and water repellent treatment for use on alkaline mineral substrates such as concrete, render, brickwork and natural stone. Keim Lotexan N was developed as a dedicated generic variant of Keim Lotexan for mineral substrates having a lower alkalinity, such as weathered natural stone.

Features:

  • Acts as a water repellent and dust suppresser.
  • Longevity.
  • Clear: Absorbs into the surface.
  • Invisible: Does not darken the surface.
  • Highly water repellent.

Surface preparation:

  • Any algae growth should be wire brushed to remove all growths and treated with Keim Algicid, brush applied, undiluted and allowed to remain undisturbed for three hours before thoroughly washing off. All gaps, cracks and holes in the substrate must be filled prior to any treatment.
  • Any suspect mortar jointing should be raked out and re-instated where necessary.
  • Any new/ repaired surfaces should be left for a minimum period of 15 days prior to any treatment taking place.

Application:

Suitable for use on unpainted surfaces.

General information

Features

Acts as a water repellent and dust suppresser

Longevity

Clear: Absorbs into the surface

Invisible: Does not darken the surface

Highly water repellent

Uniclass 2015

Pr_35_31_68_97 Water repellentsPrimary

CAWS

M60/18 Special coating

M60/195 Special coating

Specification data - Water repellents

Product Reference

Lotexan

For concrete, render, brick and other alkaline substrates.

Lotexan N

For weathered stone and substrates with lower alkalinity.

Standard product features

Composition:

Siloxane.

Application:

  • Apply as two wet-on-wet flood coats with ten minutes between.
  • Suitable for brush, roller or low-pressure spray.

Consumption:

0.2–0.4 L/m² for two coats on a smooth surface.

Colour:

Clear, does not darken the substrate when dry.

Water vapour permeability:

Sd: <0.05 m.

Product Options

Product reference:

- Lotexan:

Apply the first coat of Keim Lotexan by low-pressure spray, working from the bottom of the substrate upwards, firstly in a horizontal manner. After a period of approximately 10 minutes, a further coat should be applied again from bottom to top in a vertical manner, thus ensuring that all facets of the substrate are well coated. It is important that Keim Lotexan is only applied to a dry surface and care is taken to avoid runs, as the material is thin.

- Lotexan N:

Keim Lotexan-N is optimized for application onto pH neutral surfaces. Apply the first coat of Keim Lotexan-N by low-pressure spray, working from the bottom of the substrate upwards, firstly in a horizontal manner. After a period of approximately 10 minutes, a further coat should be applied, again from bottom to top, this time in a vertical manner, thus ensuring that all facets of the substrate are well coated. It is important that Keim Lotexan-N is only applied to a dry surface and care is taken to avoid runs, as the material is thin.

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