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CLEANING AND MAINTENANCE
PORTABLE FLOORS

G 10.0

 

G 10.0

GENERAL DESCRIPTION

This guide is intended for those responsible for cleaning and maintaining portable floors.

The guide comprises recommendations for:

  1. The room's relative humidity and operating temperature.
  2. Surface protection before use.
  3. Procedure for light surface refreshing/protection before use.
  4. Procedure for full surface restoration with lacquer and paint.
  5. The right tools for dismantling the floor.
  6. When to disassemble a newly lacquered floor.
  7. Cleaning of the floor

The purpose of this guide is to ensure that the floor stays in great shape and functions optimally for many years, while preventing damage of the floor.

1. THE ROOM'S RELATIVE HUMIDITY AND OPERATING TEMPERATURE

We recommend maintaining a humidity level of 35-65 % RH and an air temperature of 16-22 °C. In newly constructed buildings, it may be necessary to run the heating and ventilation systems at higher capacity to remove any residual moisture.

During the summer months, it is advisable to ventilate in the evening or at night to prevent high humidity levels from building up. In winter, ventilation should only be used to ensure a supply of fresh air.

Do not seal the room for long periods without sufficient ventilation, as this will affect the moisture content of the wooden floor. This is particularly important in the new buildings or buildings which remain unoccupied for long periods of time.

2. SURFACE PROTECTION BEFORE USE

To ensure that the floor retains its quality and functionality, it is important to consider whether the surface needs extra protection before use. Our recommendations depend on the expected cleaning intensity and whether the floor has been delivered with standard factory lacquer, full court printing or only selected panels have been printed.

Standard factory lacquer/Full court printing
If you have opted for a standard factory lacquer or a full court factory-printed floor, no additional surface treatment is required before use. However, if the floor is expected to be subjected to frequent use of a scrubber-dryer machine and resin remover, we always recommend applying an additional coat of HP800 Sport before use.

Printing of selected panels
If you have opted for a floor with only selected panels factory-printed, we always recommend applying one coat of HP800 Sport. This ensures a uniform gloss level across the entire floor.

 

3. PROCEDURE FOR LIGHT SURFACE REFRESHING/PROTECTION BEFORE USE

BEFORE YOU BEGIN

  • New floors:
  • To minimize the risk of leaving a surface that is not completely dry before the application of lacquer, new floors should not be cleaned with a scrubber dryer machine before the lacquer is applied.
  • Instead, clean the floor manually using a flat mop.
     
  • Floors in use:
  • The surface must be completely clean and free of residues from soap, adhesive, wax, resin and polish.
  • Residue from tape adhesive, wax from dance activities or resin from handball requires extra attention.
  • If any residues remain, the lacquer may have difficulty adhering to the substrate.
  • Polish-treated floors are not suitable for light refreshment as polish is not compatible with lacquer.
  • If you are unsure about how to prepare the surface before lacquering, contact Junckers technical department.

DEGREASING, SANDING AND LACQUERING

  • To create the basis for optimal adhesion, the floor should first be cleaned with Junckers Neutralizer.
  • Dosage: 2 dl per 10 liters of water (3 oz to 1 gallon of water).
  • Then sand the surface using a floor sanding machine equipped with a sanding net, grit 150-180.
  • Remove sanding dust by vacuuming and wipe the floor with a flat mop wrung out in clean water.
  • Prepare the right tools and familiarize yourself with the procedure for lacquering. See the section 'How to prevent glue effect/side bonding."
  • Apply one coat of HP800 Sport, approx. 12 m²/liter (130 sq.ft per litre) (490 sq.ft per gallon) and allow the lacquer to dry.

AREAS WHERE THE LACQUER HAS WORN THROUGH
If there are areas on the floor where the lacquer has completely worn off, these should be sanded and then spot-repaired with HP800 Sport and, if necessary, line marking paint, before the entire floor is sealed.

DRYING TIME, HP800 SPORT

  • At 20 °C and 50 % relative humidity, the floor is ready for light traffic after 8 hours.
  • The floor can withstand full load and be cleaned after 72 hours.

4. PROCEDURE FOR FULL SURFACE RESTORATION WITH LACQUER AND PAINT

BEFORE YOU BEGIN
Always follow the instructions in the data sheets for the individual lacquer and paint products. For a portable floor, it is particularly important to use the recommended tools mentioned in these instructions and ensure that no more lacquer is applied than specified. The surface must be sanded down to bare wood and completely free of dust and contaminants.

RECOMMENDED SYSTEM BUILD-UP OF PRIMER, LACQUER AND PAINT

Step 1

One coat of WB Primer, approx. 8 m²/litre (86 sq.ft per litre) (325 sq.ft per gallon).

Step 2

One coat of HP800 Sport, approx. 12 m²/litre (130 sq.ft per litre) (490 sq.ft per gallon).

Step 3

Application of HP Sport Linemarking inside the tape masked areas:

  • Painting standard court game lines: One coat, 6-8 m²/litre. (65-86 sq.ft per litre) (245-345 sq.ft per gallon)
  • Painting larger areas such as the key area around a basketball hoop or the floors outer perimeter: Two coats, approx. 12 m²/litre. (130 sq.ft per litre) (490 sq.ft per gallon).

Step 4 

One protective coat of HP800 Sport on the full floor area, approx.12 m²/litre. (130 sq.ft per litre) (490 sq.ft per gallon).

Find recommendations for intermediate sanding and drying times in the data sheets for the individual products.

NEVER COMPROMISE ON THE USE OF PRIMER
A primer helps to prevent glue effect between the panels. In worst case, a glue effect can cause the tongue and groove joints to split during panel disassembly.

HOW TO PREVENT GLUE EFFECT/SIDE BONDING
When lacquering and painting a portable floor, it is important to prevent the product from seeping into the joints. Through the joints, lacquer can penetrate the tongue and groove causing a glue effect and locking of the panels. It is not entirely possible to avoid lacquer seeping into the joints, but the problem can be prevented with a few precautions.

  • Do not use more lacquer or paint than recommended.
  • Do not pour lacquer directly onto the floor.
  • Never use an applicator – this tool makes it difficult to control the amount applied.
  • Pour the lacquer into a smaller roller tray that is easy to carry around the floor.
  • Regularly monitor lacquer consumption.
  • Use appropriate lacquer rollers.
    • For larger areas, it is recommended to use a 45 cm wide microfibre lacquer roller. The pile length of the roller must be sufficient to ensure the recommended amount of lacquer.
    • For standard court markings, choose a roller width that suits the surface to be painted.
  • Avoid pressing the panels together too tightly to minimize lacquer and paint penetration. There is a fixed spacing tolerance built in between the floor panels - corresponding to the spacing between the boards in the panel.

There must be enough space to release the panels from each other with a knife during disassembly. Too tight a joint, leaves no room for the knife and increases the risk of it slipping and damaging the floor. Therefore, respect the built-in spacing - also when renovating and recoating.

​5. THE RIGHT TOOLS FOR DISMANTLING THE FLOOR

 

Utility knife for cutting

  • Use a utility knife to cut along all edges of each panel before lifting the panel out of the metal brackets and removing the loose tongue.
  • This will prevent the lacquer from fraying and damaging the surface.

 

Tip:

  • If the joints are difficult to see due to many layers of lacquer and paint, tilt the panel 30-45° to improve visibility.

Extraction hook

  • Use the extraction hook to remove the loose tongue.

Water pump pliers

  • If the tongue is locked a water pump pliers can help to gently loosen it.
  • For stuck joints, it may be necessary to dismantle two panels at the same time and break the tongue free.

​6. WHEN TO DISASSEMBLE A NEWLY LACQUERED FLOOR

  • The lacquer must be sufficient cured before newly lacquered panels can be cut free and the floor dismantled.
  • If the floor is dismantled too early, the lacquer may fray along the edges of the panels as the adhesion is not sufficiently stabilized.
  • Room temperature and relative air humidity is an important factor in relation to dismantling time.
  • At 20 °C and 50 % RH, dismantling should take place within 72 hours after the last coat of lacquer.

 

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