We recommend OSB3 (Oriented Strand Board) in 2400x600x18mm sheets and Tongue & Groove OSB3 in 2400x600x18mm sheets.
Standard 18mm Plywood can be used but it must be a good quality exterior grade with at least one good face.
Note: If square edged boards are used, bandaging of joints will be required.
See Page 10 of our Installation Manual for more detailed information.
Base Coat & Top Coat – Both products can be stored for 6 months from the date on the batch label on the side of the can.
Catalyst – This
has an indefinite shelf life
Each can contains 1.5kg of pigment and represents 10% of the weight of the clear topcoat (15kg).
The entire 1.5kg can of pigment should be added to the 15kg can of clear topcoat and mixed thoroughly to ensure the pigment is evenly distributed.
If pigmenting more than one can of topcoat – consider
mixing all cans together, once pigmented to ensure uniformity of colour.
One bag will cover 10m².
You should always order extra as you need to saturate your
roof area with chippings and then sweep away the excess once cured.
Traditionally, GRP waterproofing products are applied to timber substrates and will not need primers as long as the timber surface is dry and clean.
TuffStuff can be applied to some plastics if the surface is abraded to give a ‘key’ i.e. rainwater goods.
Other materials that TuffStuff will bond to with a primer
applied, include concrete, stone, brick and some metals. If using TuffStuff for
any of these materials please contact us prior to your installation taking
place.
Yes.
Both are polyester resins and require catalyst to cure.
See Page 37 of our Installation Manual for the exact quantities.
Basecoat – 15kg =10m²
5kg = 3.3m²
Topcoat – 15kg =30m²
5kg =10m²
Chippings are applied by hand, progressively across the roof as the topcoat is applied.
Always ensure a good coverage of non-slip chippings to
avoid ‘bare patches’. When cured, sweep away the excess.