Monthly Archives: September 2014

Airless spraying

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Airless spray painting can save time and money when painting large areas. Here are some great tips on airless spraying

airless sprayer• Keep the gun in a position that is square to the surface.
• Have the gun at an equal distance to the surface, moving the gun across or up and down the surface steadily.
• Keep moving the gun at a consistent speed to conserve paint and give even coverage. Also helps avoid runs and sags in the paint.
• Move the gun in a flowing fashion movement without hesitation.
• Spray alternately from right to left and left to right.
• Begin movement of the gun before pressing the trigger.
• Release the trigger before movement of the gun ceases.
• Hold the gun closer to the surface to deposit more paint on the surface and produce a narrower spray pattern. Hold the gun farther from the surface to produce a thinner coat and a wider spray pattern.
• If  excessive paint and runs occur, change to a spray tip with a smaller aperture. If  coverage looks thin or you wish to spray faster change to a tip with a larger aperture.
• For best results apply at least two coats. Don’t try and get it perfect first time round.
• Overlap each stroke. When spraying horizontally, aim for the bottom edge of the previous stroke so as to overlap.
• On a corner or edge, split the center of the spray pattern. Spray vertically so adjoining sections have even amounts of paint.
• Avoid holding the gun at an angle, to avoid uneven coverage.
• On exteriors, work from ground to roof. Do not spray if the wind is excessive.
• Always be mindful of any surrounding objects which may be damaged by over spray. Nearby vehicles should be moved or covered and windows need to be thoroughly masked.

Repairing concrete

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Concrete will expand and contract due to temperature changes and shifts in the weight distribution of the building. This movement can cause cracks in the concrete flooring.

concrete crack

  • General Repairs Use a repair mortar for repairs over 3mm wide and 5mm deep.
  • Fine Cracks < 3mm wide Use a fine crack repair mortar to fill
  • Surface Levelling  a self leveling repair screed will make a surface more even
  • Vertical Repairs Use a light weight vertical repair mortar to minimize sagging.

 

Surface preparation
Read the directions prior to use on all products. First, remove all loose material and rake out with a bolster or scraper to create an area that will take filling more easily. Make sure the surface is dry, if necessary prime surface before application of repair product.