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To provide a galvanic protection on iron and steel. It can be
used as a self-finish or as a durable rust inhibiting primer
beneath selected top coats. It is recommended for the
protection of structural steelwork, agricultural and
construction plant and machinery, gates, railings, iron
pipework and guttering, and the rust prevention of in-situ
welding work.
Advantages
n Protects ferrous metals against rust
n Suitable as a primer or self-finish
n Prevents rust creep
n Easily applied by brush or roller
Description
Galvafroid zinc rich coating is formulated as an easily
applied, cold galvanising protection against corrosion on all
ferrous metals. Galvafroid has a mid-grey, matt finish.
Technical support
Fosroc offers a comprehensive range of high performance,
high quality repair, maintenance and construction products.
In addition, Fosroc offers a technical support service to
specifiers, end-users and contractors as well as on-site
technical assistance.
Design criteria
Galvafroid should be applied in two coats when employed
as a self-finish and one coat when used as a primer. To
achieve the correct protection, Galvafroid must be applied
on the substrate at the coverage rate recommended.
Properties
Volume solids: 40%
Solids by weight: 80%
Zinc content by volume on dry film: 61%
Zinc content by weight on dry film: 90%
Drying times at 20°C —
touch dry: 2 hours
hard dry: 24 hours
recoating time: 24 hours minimum
Specification clause
The anti-corrosive primer shall be Galvafroid, a zinc rich
material specifically designed to provide a rust inhibiting
protection to ferrous metalwork.
Application instructions
Preparation
All ferrous surfaces must be clean and free from oil, grease,
mill scale, rust and existing coatings. This is best achieved
by grit blasting, although thorough wire brushing can be
sufficient. Some rust removers based on phosphoric acid
tend to leave an electrically insulating film on ferrous metals
and must not be used.
Mixing
Galvafroid must be thoroughly stirred to give a uniform
product prior to application. It is recommended that the
contents are stirred periodically during application to avoid
settlement.
Galvafroid is supplied at the correct consistency for direct
application from the tin but, should it be found necessary to
thin, only Fosroc Thinner/Cleaner should be added, at a rate
not exceeding 1 litre of thinners to 8 litres of Galvafroid.
Application
In order to obtain the protective properties of Galvafroid, it
is important that the correct rate of application is achieved.
The minimum application temperature is 5°C.
All prepared surfaces should be treated with one or more
coats of Galvafroid. The material should be liberally applied
without any attempt to brush or roll out. The required
thickness of coating may be built up by successive
applications of Galvafroid when the previous coat is
completely dry.
Overcoating
Where required, Galvafroid may be painted to improve
durability or to enhance appearance. The Galvafroid coating
should not be rubbed down to obtain a smooth surface for
finishing paints, but it should be given a generous coat of a
suitable filling primer and this, when thoroughly dry, should
be sanded to a smooth surface. For general purposes, a
good oil bound or alkyd paint should be used. Where the
work is subject to corrosive and marine conditions,
however, a non-saponifiable finishing paint should be used,
i.e. Chlorinated rubber paint. It is advisable to allow the
Galvafroid coating to weather for at least 3 days before
applying the finishing coat. Cellulose and bituminous
paints are not generally suitable for over-painting
Galvafroid.
Cleaning
Galvafroid should be removed from tools and equipment
with Fosroc Thinner/Cleaner immediately after use. Dried
material can only be removed mechanically.
Limitations
Galvafroid is formulated for application to clean ferrous
substrates and should not be used on rusty, corroded
surfaces.
Galvafroid should not be applied over existing coatings.
Galvafroid should not be used on surfaces in contact with
drinking water.
Galvafroid should not be used on surfaces exposed to soft
water at temperatures above 60°C.
Galvafroid should not be used on surfaces treated with
phosphoric acid based rust removers.
Galvafroid should not be overcoated with materials
containing strong solvents such as chlorinated and
aromatic hydrocarbons, esters and ethers.
Estimating
Supply
Galvafroid: Pack of 6 x 200 ml tins
Pack of 6 x 400 ml tins
Pack of 4 x 800 ml tins
1.9 litre tin
Fosroc Thinner/Cleaner: 0.5 litre tins
Coverage
Galvafroid: 16 m2/litre when used as a primer
8 m2/litre when used as a self-finish
Storage
Galvafroid has a shelf life of 12 months if kept in a dry store
between 5°C and 20°C in the original, unopened container.
Precautions
Health and safety
Galvafroid and Fosroc Thinner/Cleaner should not come in
contact with the skin and eyes or be swallowed. Ensure
adequate ventilation and avoid inhalation of vapours. Some
people are sensitive to resins, hardeners and solvents. Wear
suitable gloves and eye protection. If working in a confined
area, suitable respiratory protective equipment must be
used. The use of barrier creams provides additional skin
protection. In case of contact with skin, rinse with plenty of
clean water, then cleanse with soap and water. Do not use
solvent. In case of contact with eyes, rinse immediately with
plenty of clean water and seek medical advice. If swallowed,
seek medical attention immediately — do not induce
vomiting.
Fire
Galvafroid and Fosroc Thinner/Cleaner are flammable. Keep
away from sources of ignition. No smoking. In the event of
fire, extinguish with CO2 or foam. Do not use a water jet.
Flash points
Galvafroid: 41°C
Fosroc Thinner/Cleaner: 41°C
For further information, refer to the Product Safety Data
Sheet.
Galvafroid is the trade mark of Fosroc International Limited
Important note
Fosroc products are guaranteed against defective materials and manufacture and are sold subject to its standard Conditions for the Supply of Goods and Services,
copies of which may be obtained on request. Whilst Fosroc endeavours to ensure that any advice, recommendation, specification or information it may give
is accurate and correct, it cannot, because it has no direct or continuous control over where or how its products are applied, accept any liability either directly
or indirectly arising from the use of its products, whether or not in accordance with any advice, specification, recommendation or information given by it. |
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