Metalwork preparation

It is important to eliminate all traces of mill scale and corrosion prior to the application of paints. Here are several methods to clean the surface of rust and scale.

CHIPPING: Chipping and wire brushing, (not suitable for preparation of substrates to be coated with high performance paint systems such as 2 Pack Epoxy High Build Coatings.)

FLAME CLEANING: Flame Cleaning can be used to remove scale however not rust.

WIRE BRUSHING: Wire brushing, usually carried out with rotating or hand wire brushes. Not suitable for the removal of mill scale. The wire brushed surfaces aren’t completely free of corrosion. They can be polished and contaminated with oil, which decreases the adhesion of the primer coat. Disc sanding is usually required to complete the preparation.

SWEEP OR LIGHT BLAST CLEANING: Sweep / light blast cleaning to remove any light rust and surface contamination from a painted steel surface.

BLAST CLEANING: Blast cleaning involves forcing a stream of abrasive particles at speed against the surface to be prepared. It can either be hand operated or automatic. This is the best method of preparation. Commonly two types are used, “Shot” where the particles are mostly spherical and should contain only a minimum of irregular shapes. And “Grit”, where the particles show angularity of form and have shape cutting edges.

After steel is prepared a suitable paint system should be applied. The primer coat needs to be applied as soon as possible to prevent further corrosion of the metal surface.

Painting and decorating tips

  •  Painting is all in the preparation work. If you’re working on doors or walls which are in poor condition, take sufficient time to fill nail holes, rub down, and most importantly, caulk all the gaps in between woodwork or tile and the wall surfaces.
  •   Don’t skimp on the priming of bare substrates! Primers make the job easier and improve the finish of the job.
  •   If you’re painting large areas it may be easier to use an airless sprayer.  Commercial painters carrying out large scale jobs go for this method on a regular basis.
  •   Choose good quality brushes for the job. Purdy and Hamilton synthetic brushes make the job much easier and produce a better finish. For broard areas of doors try using a radiator roller to apply the paint then lay it off with a brush. Store oil based brushes in water to keep them overnight. Old carrier bags are a useful method for temporarily storing water based rollers and brushes after use. After cleaning the brush or roller simply place it in a bag and tie the ends. Once the job is finished clean the brushes out with water or white spirit.
  •  If you’re painting  a knotty wooden surface, Zinsser B-I-N which is made with shellac and it will seal the knots and  primes the surface.
  •  When painting frames with glass panels and don’t like cutting in, avoid getting paint on the glass by cutting lengths of white copier paper and soaking them in water. These can be  placed on the glass. They’ll stick straight to the pane and you can move them into place far easier than tape.
  •  When working from a ladder use a kettle hook to hold the paint kettle. This will let you keep 3 points of contact with the ladder, as per the HSE’s recommendations.

Industrial Painting and Surface Preparation

Over time industrial coatings deteriorate and become defective, often rusting flaking and blistering.

Surface Preparation
One of the things that make industrial painting different from regular painting is the amount of surface preparation required. Good preparation is key to a high quality, long lasting paint job, and this is especially true when the finished work will be up against weathering, chemicals and pollutants.
Ways in which industrial painters prepare a surface-
High pressure water jets to wash away dirt and grit
Abrasive methods to remove defective coatings, such as mechanical grinding and vacu blasting-

While both are highly effective, abrasive surface preparation methods will leave the area in better condition. Rust will be reduced, as will any dirt that has accumulated on the building or surface.
Painting-
Most tanks, containers or industrial surfaces will have a coat of paint on them already. To ensure the next coat has sufficient adhesion, the defective areas of this first coat will often need to be removed. Sometimes the existing coating will need to be completely removed then primed using the appropiate metal primer. If the metal is galvanized it is best left unpainted. The galvanized surface will resist corrosion. If it is necessary to paint the galvanized surface, it will need a specialist primer or mordens solution prior to painting.
Qualified professionals will be able to do this in a variety of ways, depending on which way will best suit the job at hand. Application by roller and brush is an option, or for large surfaces spray coatings can be more cost effective and speed up the painting process.

Industrial floor coatings

Factors to consider

 

Floor paint & type of traffic-

Floor paints come in single pack and two pack applications. Single pack are more economical, but not suitable for vehicle traffic. Two pack are more suited to commercial and industrial settings and can withstand vehicle traffic and chemical spills.

industrial floor paint

Floor paint & volume of traffic-
High traffic areas are best suited to a two pack heavy duty floor coating, additional coats may be applied to high traffic areas to ensure the finish will last for longer.
Preparation of existing floor to give a lasting finish-
The most important aspect of painting a floor is the preparation. Any areas of existing defective floor paint need to be removed. If the area is large, a mechanical grinder is the most practical method to prepare the floor. If existing floor is sound it will just need a degrease.

New concrete screed- sufficient drying time-

For new floors, sufficient drying time should be allowed before some two pack paints are applied. A new concrete screed of 50mm should be given around 6 weeks to dry sufficiently. There are some 2 pack water based paints, Rawlins ‘Durafloor plus’ that can be applied once the screed has partially dried and will allow the screed to continue to dry.

floor paint

Warranty period-

Floor paints do not come with a warranty from the manufacturer, instead they give a typical lifespan for their products. Industrial Floor painting companies will give a warranty for their completed jobs of 12 or 24 months. Should you require a longer warranty period this should be negotiated with your painting contractor prior to start of the work.

 

 

 

 

Planning your painting and decorating project

Before you start your painting and decorating project, you need to prepare. This will make sure that the job matches your needs, works with your tastes and will fit within your DIY budget. Here are three important considerations to make before starting.

 

 painting and decorating

 

What Is Your Budget?

 

 

 

The first thing you need to do is determine the amount of money you have to spend. With a big enough budget, you can save yourself a lot of time and hassle by hiring painters and decorators to do the work for you. You will still need to do some planning and help them with the decisions but you do not need to stay in a house full of paint fumes while they work.

 

 

If you do not have the budget to hire someone, then you will need to consider the money you have and the way that you will spend it. You will need various types of materials, including paint or wallpaper, shelving units and the tools needed to do the job. You may have to sacrifice the Dulux paint to afford other areas if you have a tight budget.

 

 

Paint vs. Wallpaper

 

 

There are pros and cons to both options and you need to run through all of them. Consider the room that is being decorated to determine whether wallpaper or paint is the best option. When it comes to living rooms and bedrooms, it may be worth adding some pattern with wallpaper, even if it is just one wall or a border around the room.

 

wallpaper

 

For businesses, commercial painting and industrial painting are often the better option. These will last longer, take less time to complete and cost less in the long term. You can also get the neutral colours that are often needed for the style of office or room.

 

 

Choosing Your Colours

 

 

It is worth asking for chips of the paint for samples instead of the colours on fabric. This gives you a better idea of how the colours will look on the wall and whether they stand out the way you expected. The last thing you want is to buy one colour, finish the room and realise that it is too dark/light for your needs.

 

 

Take your time when it comes to redecoration. This helps you save money and find something that will suit your tastes perfectly.