FLOORING FLAWLESS Tracey Glew, MD of The Preparation Group, talks us through some common problem
The preparation of sub-floors is critical to ensure the success of the finished flooring system, coating, resin or screed. An incorrectly prepared surface will impact on the application, aesthetic result and durability of the floor finish and can be costly to remedy.
When new coatings, resins or screeds are applied to floors, they need a suitably clean, dry and textured surface or ‘profile’, otherwise there is no ‘grip’ between the floor and the material.
When finishes that have been applied to new concrete fail it is usually due to the laitance, commonly termed ‘fat’, on the surface of the concrete that wasn’t properly removed to create the required textured surface, or the floor
hadn’t fully cured before the material was installed. On old concrete there may have been old coatings, residual contaminants or dust, or the surface was damp.
Floors often need to be replaced as part of a refurbishment project and it is important that they are removed effectively and a sufficient bond achieved for the new floor to properly adhere.
These case studies carried out by The Preparation Group’s contracting division, PPC, are projects where the finished system had failed due to incorrect sub-floor preparation, the surface or flooring material being replaced or where there were special restrictions.
LEVELLING ROUGH CONCRETE READY FOR A SCREED
The Problem A 300m2
tamped concrete slab had been laid for a
new office building but badly finished off, with visible raised areas. It needed levelling for the application of a screed, followed by tiles.
The Solution
A 320 Planer was employed to reduce the concrete, removing the high spots and levelling the area. The 320 is a three phase self-propelled planning machine with variable speed control and an adjustable cutting depth to remove most stubborn materials including, thermoplastic lines, roof chippings, screeds and self- levellers. The surface was then flattened and smoothed using a 250 Grinder.
The Outcome
The finished result was a flat profile ready for application of the screed and new floor covering.
52 | TOMORROW’S FM
twitter.com/TomorrowsFM
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74
