| Pointing Trowel: | Shaped as a Brick Trowel but only 75mm to 125mm in length. Used in conjunction with a Hawk its main ... | |
| Polished Porcelain | A finish applied to highly vitrified ceramic tiles by abrasive polishing... | |
| Porcelain | Description increasingly given to highly vitrified, dense dust pressed, impervious, fine grained cer... | |
| Porosity | In ceramic material it expresses the relationship of open pore space to bulk volume as a percentage.... | |
| Portland Cement | Made from crushed limestone (or chalk) and clay then mixed with water to produce a slurry. The slurr... | |
| Portland Cement | Used in screeds, renders, adhesives and grouts to comply with BS EN 197-1 Cement Composition, specif... | |
| Pourable Thickbed | Cement based tile adhesive, with additives, used in thicknesses up to 25 mm and applied by pouring r... | |
| Pricking up Coat | First or backing coat of a render or plaster.... | |
| Priming | The action of applying an acrylic or latex polymer primer to a porous or unstable background to assi... | |
| Quarry Tile | A traditional wet plastic clay product produced by pressing and then firing. Later production was ma... | |
| Queen Closer: | Formed by cutting a brick, on the centre line, along its length to produce a 56mm closer. The Q.C. i... | |
| Quoin: | The external angle of a building. The accuracy of the building depends on the building of the Quoins... | |
| Racking Back: | When a section of the brickwork has to be delayed for some reason, as when building the Quoins, each... | |
| Ramp Test | One of the standard laboratory methods of testing slip resistance Ð see also pendulum test. Germ... | |
| Ranging Lines: | Heavy duty lines that are used for the initial setting out, at ground level, to mark the trench line... | |
| Rat-Trap Bond: | Used to construct low cost walls by laying the bricks on edge where strength or appearance is not im... | |
| Reaction Resin | Resin involving two or more components including synthetic resin and mineral fillers which requires ... | |
| Rectified | A process in which tile edges are sawn or ground to ensure all within a batch are exactly the same s... | |
| Reference Lines | Two lines, intersecting at 90 degrees, marked on wall or floor substrates during setting out, to est... | |
| Reinforcement | Mild steel mesh to BS 4483 with 2.5 mm diameter wire in mesh sizes 50 x 50 or 100 x 100 mm used in f... | |
