copperbed application guidelines
preparation:As is common with all epoxy coatings, it is important that the substrate to be coated is well prepared.
All surfaces must be must be cleaned of all contaminates, including dirt, dust, grease, rust or loose paint.
Two-pack epoxy coatings, such as Copperbed, must be applied to sound and permanent substrates – consequently all surfaces must be cleaned of any previously applied single-pack paint coatings or varnishes.
The best way to achieve this is to abrade the surface to provide a good key for the epoxy coating. The most efficient method is to use a random orbital electric sander, with 60 to 120 grade discs and paper. Remove the resulting dust using a soft brush or dry cloth before proceeding with the Copperbed application.
For porous surfaces (e.g. soft wood, terracotta pots etc) it advisable to apply one or two coats of pure resin (Pack A + Pack B but with NO copper) as described below before continuing to apply the full Copperbed product (i.e. Pack A + Pack B + the copper). NB "Primer Only" packs , i.e. just Pack A and Pack B, can be supplied.
Under no circumstances clean the surface with any solvents or oil-based products (such as Acetone).
Wood, Iron, Steel, Aluminium and Cement can be equally successfully coated with Copperbed.
mixing:Copperbed is supplied in three parts; Pack A (resin), Pack B (hardener), and a bag of fine copper powder. Diligently mix Pack A with Pack B in an appropriately sized container, then continue to mix while carefully adding the copper powder. Only make up enough product for one coat at a time - equal parts by volume of all three components.
Stir until a fully homogeneous mix is obtained, with all the copper held in suspension. Note: during the mixed pot life the copper may settle to the bottom of the mixing container – consequently ensure to stir the product regularly to maintain the copper suspension.
pot life:The mixed pot life of Copperbed is 60 minutes at 10 degrees Centigrade, 45 minutes at 20 degrees Centigrade and 30 minutes at 30 degrees Centigrade. Never mix more product than can easily be applied within the time available. We recommend that Copperbed be mixed in no greater quantity than one litre unit at a time.
environmental conditions:Do not attempt to apply Copperbed if the ambient or surface temperatures are below 8 degrees Centigrade. With the epoxy being water miscible until cured, protect the surface from rain for at least 48 hours. (The cure rate is dependent on temperature).
application:The product should always be applied directly after mixing. Do not attempt to apply Copperbed by brush. For application by roller, short-pile simulated mohair or high quality neoprene foam sleeves should be used (but not light duty cardboard-backed foam rollers).
Under normal circumstances a minimum of three coats are required. Second and third coats should be applied as soon as the previous coat allows – i.e. after approximately one hour at 20 degrees Centigrade.
To ensure a satisfactory chemical bond between coats, all the required coats should be applied consecutively in a single day.
If any product is left over after three coats have been applied, continue the application until it is all used – this will ensure that the maximum depth of copper is present. Never attempt to apply a coat too thickly as this will result in sagging and runs. Although the full cure is obtained after 5 days, at reasonable temperature the coated surfaces may be sufficiently cured to be touched and moved within 24 hours if necessary.
Treated areas will benefit from having the cured Copperbed surface lightly burnished with fine “wet and dry” paper or sanding pad– this will expose the copper powder and increase the immediate availability of the copper. This process is particularly beneficial were you are looking to achieve a faster weathering or in deterrent to slugs and snails.
coverage rate:The effective coverage rate for a finished 3 coat application is 5 square metres per litre - that is 5 square meters coated 3 times.
shelf life:12 months in sealed pots at 20 degrees Centigrade. Shelf life will be shortened if stored in warmer conditions. Keep protected from frost.
tool cleaning:If the epoxy has not yet cured, equipment can be cleaned in warm water. Do NOT use white spirit, or other thinners.
maintenance:When correctly applied Copperbed will stay as an active copper layer for 10+ years.
Damaged areas can be touched-up as required. If, over the years, a slight accumulation of dirt or algal growth does appear, this can be removed by washing or brushing.
An annual wash or brush is recommended. Eventually, after several years, the surface may need to be lightly abraded with a fine grade of “wet and dry” paper or a sanding pad to expose fresh copper (if that is the visual effect you are looking for or you want to maintain the best deterrent for slugs and snails).
precautions:Follow usual good hygiene practices and wash skin free of any product immediately, before it cures, using soap and warm water. Any splashes to the eyes should be washed immediately with plenty of clean water and medical advice sought. Read the hazard labels. If you are in any doubt over the use or application of Copperbed, please contact us for further advice and information.