Non Darkening Sealer - Application Guide
The purpose of this document is to give guidance to approved contractors and suppliers who are engaged in graffiti removal using Astro Bare Surface Graffiti Remover (BSGR).
Non Darkening Sealer
Used as a transparent sealer for porous surfaces prior to application of Anti Graffiti Paint. Also used as a non darkening sealer for concrete and concrete products such as cement render, mortars and grouts, fibro cement, etc.
Designed for application on to a wide variety of porous surfaces such as, brick, mortar, concrete, render, porous stone and bare timber. Not required over sealed or previously painted surfaces.
Effective on brickwork where Anti Graffiti Paint often has no darkening effect on the brick but can ‘darken’ the mortar course.
Apply one good coat of Non Darkening Sealer over a clean, dry substrate
- first ensuring that any brick acid/etch cleaner used has been thoroughly
For Non Darkening Sealer to work it is important that it be allowed to dry fully before applying any Anti Graffiti Paint finishing coats. Allow at least 4 hours under good drying conditions, but preferably overnight.
To test the effectiveness of Non Darkening Sealer we strongly recommend a small discrete trial application be carried out.
Important: Avoid using a paint brush when applying Non Darkening Sealer to surfaces subjected to efflorescence (i.e. salt deposits on cement substrates).
Efflorescence can be difficult to detect on light coloured surfaces and will produce a milky effect on a clear finish if disturbed during application (i.e. by shear action of using a brush). Roller or spray application is recommended where efflorescence may be present.
As part of our policy of ongoing improvements, we reserve the right to modify, alter or change product specifications without giving notice. Product illustrations are representations only. All information contained in this document is provided for guidance only, and as ASTROFLAME FIRESEALS LTD has no control over the installation methods of the products, or of the prevailing site conditions, no warranties expressed or implied are intended to be given as to the actual performance of the products mentioned or referred to, and no liability whatsoever will be accepted for any loss, damage or injury arising from the use of the information given of products mentioned or referred to herein.
The above information
to the best of our knowledge is true and accurate and based upon current
test data and is supplied for your guidance only. Customers should