Tools and Calculators Unit Convertor reset form Select unit mm cm m inches ft yard to Select unit mm cm m inches ft yard GFTK Calculator reset form Choose Jointing Compound Select Product GFTK 800 - 25 kg GFTK 815 - 10 kg GFTK 840 - 25 kg GFTK 850 - 25 kg Paved Area m² Paving Dimensions (average) Joint Dimensions (average) Width mm x Length mm Width mm x Depth mm