Flushing
This process is known my many names and varies even from city to city, it's finish can also vary but mostly between countries and usually follows an industry standard. Also known as Plastering, Stopping, Finishing, Jointing or Mudding, this process is the art of sealing and finishing walls and ceilings to a smooth and uniform finish ready for paint and if you've ever tried this yourself, you'll know that this process truly is an art form
Flushing generally uses a 3 coat system using a combination of gypsum based initial coats and a finishing layer of silica based top coat, the amount of coats of each times differs between joint types, finishes and preference of the worker. There are 3 types of finishes when it comes to flushing which are referred to as a certain "level" or "Class", these are:
Level 3: For use in areas that do not require a finish, such as above ceilings and inside service shafts and other inaccessible spaces. All joints are to be taped with two applications of compound and all fastener heads are to be covered. Compound is to be finished smooth, such as by scraping ridges etc. with a trowel.
Level 4: This is the generally accepted level of finish for residential construction. Joints are to follow a three coat system, consisting of; a tape coat plus two subsequent coats applied over the tape coat and fastener heads. All joint compounds should be sanded to a smooth finish free of tool marks and ridges. A flat, matt or low sheen, light coloured paint finish is recommended.
Level 5:
This level of finish should be used wherever:
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critical light conditions occur such as from windows, skylights, or silhouette and spot lighting
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gloss or semi-gloss paints are to be used
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where paint is mid or dark coloured
A Level 5 finish requires a high level of frame alignment to ensure a smoother surface. All joint compound should be sanded to a smooth finish free of tool marks and ridges. This should be followed by the application of a skim coat to remove differential surface textures and porosity.
Skim coating is a term used to describe a thin finish coat, rolled, trowelled or airless sprayed and then possibly sanded, to achieve a smooth and even finish. It is normally less than 1mm in thickness and is applied over the entire plasterboard surface to conceal imperfections in the joint work, smooth the paper texture and provide a uniform surface for decorating.
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It is extremely important to select the right level of finish for your project and that each person handling each stage of development knows and understands the level of finish required for each area as this has major consequences once painted and finished. Be sure to know what finish you're looking to achieve BEFORE any work has commenced. It's beneficial to know where light comes in at certain times of the day and what type of artificial lighting will be used to avoid glancing light issues.
Choosing the right finish can be quite difficult but it doesn't need to be, we're here to help. At VIP Interiors, we are experts in our field and can help you decide which finish is best for every area of your project and can also sight the relevant industry standards and manufacturer specifications.
Get in touch today for your free quote!