A Plastering Glossary

Need to complete a plastering DIY job but have absolutely no idea where to start? Considering a career change to plastering but lack the expertise to make it happen? Fear not, Access Training is on hand to help prepare you for whatever it is that lies ahead. Like with all trades, the first step is to take a look at exactly what it is and understand some of the terms and definitions you'll come across. To assist with this, we've put together a brief list of some of the common plastering definitions to get you started;

Accelerator: A material that shortens the setting time of plasters and other cement-like materials.

Admixture: Any substance added to a plaster component or plaster mortar for the purpose of modifying its properties.

Aggregate: Granular material that does not contribute to the hardening reaction of the mortar.

Bonding Mortar: A mortar to produce a first bonding coat in a multicoat system. Usually applied in a thin coat.

Correction Time: The maximum time interval during which adjustment is possible without significant loss of final strength. This may be also referred to as adjustability.

Dot and Dab: A technique used to attach plasterboard to walls using small lumps of adhesive.

Float: A tool or procedure used to straighten and level the finish coat, to correct surface irregularities prodDouced by other tools, or to bestow a distinctive surface texture.

Grout:  A mortar or paste for filling crevices, esp. the gaps between wall or floor tiles

Hawk: A tool used by plasterers to hold and carry plaster.

Mortar: A plastic mixture composed of water and a cementitious material, which may be machine or hand applied, and which hardens in place.

Screed: To level or straighten a plaster coat application with a rod, darby or other similar tool

Setting Time: The time after which the mortar begins to harden. After this time the mortar is normally stable in the presence of water.

Substrate: Immediate surface to which the mortar is to be applied. In the case of a coating to be applied to an existing render, the render would be the coating's substrate.

Unsound: This refers to the condition of plaster where the hardened mass has lost internal strength, exhibiting cracking/spalling/delamination/etc. This general state may be contributed to by excessive aggregate addition, water damage, poor drying conditions, overwatering and other factors.

Now that you know some of the definitions you may come across when plastering, its time to have a go at the real thing. However attempting a job without proper training could not only prove expensive, but you might end up doing lasting damage to the wall or surface you're working on. To get the most rounded plastering experience the best option is a comprehensive plastering course from Access Training. With a variety of different courses for different skill levels, our experienced teaching staff will either fully prepare you for future DIY work or help you attain the vital qualifications needed to gain employment as a professional plasterer. With our courses open to people of all ages and backgrounds, you could just be a phonecall away from gaining a valuable new skill that will stay with you for the rest of your life. To find out more please take a look at our courses page or call us on 0800 345 7492.