Gel Coat resin has an approximate coverage of 450gm², a 1kg tin should give you just under 2 square metres.

As a general rule you should go by the ratio of 2 to 1 by weight; for example when using light chopped stran mat (300gm²) you will need around 600 grams of resin to wet it through.

For a true colour - our range of Polyurethane Pigments can be used. You could also use the Acrylic Paints, but the colour produced will not be strong but more of a pastel shade. No product is suitable for colouring RTV-101.

Extra layers added to the mould should be applied when the first layer is still just slightly tacky.

If kept wrapped in damp cloths and sealed in a plastic bag, moulds will normally keep for 2 to 3 days. Ideally though, Alginate moulds should be used as soon as possible as they will begin to shrink and distort as the water dries.

You can try painting a solution of water and Sodium Bicarbonate (Baking Soda) onto the set Alginate before adding additional layers.

Our Earth Colours are ideal for this.

The 23¾ carat; the higher the gold content, the better.

Normally, it will make up to two face moulds.

No, not really; it will not last well at all. However, if you use Basic Alpha with our Plaster Polymer it will be very weather resistant and should last several years.