Welcome to the PGR Materials Calculators. These calculators can be used to estimate quantities of building materials. Please bear in mind that these are for guidance only and we cannot therefore accept any liability for the quantities given. Brick Block CalculatorPlease use our brick/bloc... Concrete CalculatorPlease use our concrete m... Decking CalculatorPlease use our decking ca... Patio Mortar CalculatorPlease use our patio mort... Paving CalculatorPlease use our Paving cal...