Polyurethane flooring execution specification Denber Gloss 100%

Polyurethane flooring execution specification Denber Gloss 100% Floor

Polyurethane flooring execution specification Denber Gloss 100% Floor www.denber-paints.co.il

Area preparation:

If there is light grease on an existing epoxy coating and the grease has not penetrated the concrete – dissolve with degreaser Z by rubbing (road sweeper or machine) and washing with water, after drying – start polishing.
If there is grease penetration into the concrete – spreading an emulsifier into N oil “for absorbing the grease” and washing with water until foam stops coming out. After drying – start polishing.
And if there is a layer of grease/hardened soot – spread carbon cleaner and rub until fully dissolved/softening and mechanical scraping until you get concrete free of oil/hardened soot, spread into N oil and rinse with water. After drying – start polishing.
It should be checked while washing with water when the floor is wet, this PH acidity level should be neutral = 7-8. If it is higher, the casting date must be postponed until at least 28 days from the casting day if it is new concrete. If the concrete is older and still has a high level of acidity. Neutralize with a diluted caustic soda solution and rinse and check again. until getting a 7-8 result

Polishing:

On an old coating layer – for renewal – polishing with paper sander No. 26 until a matte surface is obtained.
On concrete – diamond polishing with a double helicopter machine with 6 diamond discs or a large diamond disc “7-“9 for small areas. While polishing, the machine must be connected to a vacuum system. And the polishing worker must wear protective glasses and a dust mask.
Before proceeding with the application of the primer layer, the strength of the concrete must be tested. Pull-off test with a device that meets the ASTM-D4541 standard. Pull-off strength must be greater than 1.5 MPa. Weaker concrete will crumble in the future under pressure together with the coating. In this case, you should not continue without the customer’s written confirmation that he is aware of the problem and insists on continuing the coating work at his own risk .

Concrete moisture test:

Method 1 – Moisture tester. With penetrating spikes: result required less than 3% moisture. The test will be done on every 50 square meters of the area.
Method 2 – gluing a 46×46 cm transparent nylon/polyethylene sheet, with 5 cm wide adhesive paper all around for complete sealing. After at least 16 hours – lifting the sheet and manually checking that there is no moisture on the concrete and the lower part of the sheet that was in contact with it. The test will be done on every 50 square meters of the area.

Primer layer:

Mix part A + part B well with an electric stirrer until you get a uniform solution.
Applying a layer of epoxy flour primer 1 liter per 5 square meters of concrete. By spraying/spraying. For a damp floor – epoxy flour primer 450
On an old existing coating layer there is no requirement for a primer and provided that there are no gaps in the coating exposing the concrete. Even then, primer can only be applied to bald spots. High-quality polishing of every surface in the coating is mandatory before applying a renewal layer.
If there is no other choice (it is recommended to dry it with a burner) pour on small damp parts, use ” Epoxide Fluor Primer 450 ” designed for damp areas.

Grout casting:

If there are “bald areas” in the floor/large holes, height differences must be filled with epoxy grout.
Preparing the epoxy grout mixture : mix part A + part B and while mixing add quartz part C into the bucket until you get a thick mixture like concrete.
The mixture should be poured immediately into the clearings/holes and leveled two and a half times with grout until full compaction is obtained and leveled to “zero” height.

Mix well part A 10 liters + part B 5 liters and together 15 liters and add quartz up to 18 liters. Pour into another bucket and mix again – a must. All this within up to 10 minutes to prevent heating and spoilage of the material.
Immediately pour the entire mixture in the corner of the surface to be coated and level with a toothed ruler to the required thickness. Add and continue pouring sections until you complete about 2 meters of pouring strip from the wall.
Go with a spiked roller to remove bubbles on the cast surface.
Continue casting another area and again with the roller and so on until the entire casting is finished. Be sure to work quickly and intensively without breaks to maintain the casting sequence until the end.

Concrete repairs and concrete restoration damaged floors:

Sealing cracks, gaps and spaces in concrete:

Fractures and cracks larger than 0.5 mm will be opened with a disk and filled as required. Vacuum the dust thoroughly and apply a quick-drying transparent primer of the ” Polyplex Transparent Primer ” type, and fill with an elastomeric mixture ” Polyplex Putty 225 ” up to the height of “zero” .

Concrete and rebar repairs:

In the places where the feed iron is exposed, excavation must be carried out to a depth until the rusted iron is fully exposed, at least 3 cm in its entire circumference, as well as 5 cm from its sides to expose rust-free iron. The iron must be polished well on all sides with a sharpener/steel brush/sandpaper to obtain a white and clean iron. The dust must be vacuumed. Apply a thin layer of ” Zinkot ” for cold galvanizing to stop rusting. Apply a layer of ” epoxydan sulcot ” for barrier protection, (this epoxy attaches well to fresh concrete that is poured on it). If the excavated area is smaller than 20 cm, epoxy grout can be poured for filling and leveling, the grout will be an integral part of the epoxy/polyurethane casting that will be performed on the floor. If the excavated area is larger than 20 cm, concrete can be poured and smoothed to “zero” height (the problem that the concrete will be lasts up to 28 days and will delay the casting of the floor covering),

You built roller coasters:

Rollers – the rollers must be made in all floor-to-wall connections and this before starting the process of casting the floor with Dunberglas Floor. The customer will define in advance the size and shape of the roller. Standard rollers 5×5 cm triangular profile at a 45 degree angle. Both larger and rounded rollers can be made.
The roller is applied with a thick epoxy material ” Epoxidan putty ” which is hard with slight flexibility. Prepare a base mixture + hardener and mix well with a large professional electric stirrer. Spread with a suitable size spatula. To receive the required size roller or with a rounded flange for rollers to receive rounded rollers. You must wait up to 24 hours before starting casting for a final coating of the reel.
If there are drainage canals in the area, roller blinds must be made in the vertical and horizontal corners of the canals as well. Channels where the slope is incorrect or insufficient. A suitable gradient for the drainage openings must be made with epoxy grout.