Oil treatment can be done on hardwood floors of European and North American origin, eg. oak and ash. The treatment can be done with either a clear oil that emphasizes and preserves the natural color of the wood, or with white-pigmented oil, which highlights and maintains the whitish appearance of the light wood species. The white pigmented oils are supplied in several tones depending on the supplier and requirements.
Oil treatment is often the only useful treatment on tropical tree species due to the natural oil content of the tree species. Normally, a clear oil must always be used, which emphasizes the structure of the wood and gives the wood a slightly darker tone depending on the type of oil and possibly added color pigment.
Oiling of coniferous floors, e.g. lighthouse and douglas, primarily as a seal in connection with lye and soap-treated floors, see TRÆfakta 09 Wooden floors, lath treatment.
Before treatment, it is advisable to consult with the floor supplier for the choice of the correct oil type and color, as well as in TRÆ 63 Wood floors - Selection and maintenance.
Wooden floors are either oiled from the factory or untreated for grinding and oil treatment after the floor is laid.
The building must be closed, dry, heated and free of building moisture. The room temperature should be between 18 and 25 ° C. The humidity must be between 30 and 65% RH, but best approx. 50%. The wood moisture should not exceed 12% for coniferous floors and 8-10% for hardwood floors, see also the section on oak floors.
The floor must be clean, dry and free from dust, wax, grease, polish etc. Lacquered or soap-treated floors must be abraded to clean wood before oiling. Older oiled floors should be cleaned with trees or abraded when renovating.
Before oiling, the oil should be agitated / agitated so that it is completely smooth and it should be repeated in connection with the oiling. This is especially true for white pigmented oils to ensure even distribution of the pigments in the oil. Oiling should be avoided on sun-drenched floor areas.
Before oil treatment, the floor heating must be switched off and the surface temperature must not exceed 20 ° C.
Some vendors recommend wetting oak floors before oiling to improve oil uptake, as well as careful oiling to fully saturate the surface to prevent tanning dye staining during use. Therefore, follow the supplier's instructions for oil treatment of oak floors.
If the floor is oiled, the supplier's instructions for commissioning and maintaining the floor should always be followed.
After laying the floor and before any possible finishing, the floor should be uncovered if there is a need for traffic or work in the room, see the section Temporary cover.
Normally, it is advisable to finish the floor with an oil care product or a thin oiling and polishing with a cotton cloth on the polisher before use until the floor is saturated. The floor should be vacuumed carefully, cleaned with the trees or finely sanded before finishing with oil. The method of final treatment is stated in the supplier's instructions.
Finishing should be done immediately before commissioning.
After laying untreated floors, there may be minor differences in level between the individual boards / rods. The floor must therefore be sanded to a flat surface before oiling, and the grinding must always take place in the longitudinal direction of the boards. Edges, corner and connection to pipes and bushings are sanded with edge grinder in combination with e.g. a delta grinder, see TRÆfakta 10 Wooden floors - Grinding.
The basic treatment consists of 2 layers of oil which are applied wet in wet with approx. 30 minutes apart to saturate the wood surface. The floor is polished after approx. 30 minutes with polisher attached to cotton cloth. The polishing should be done before the oil dries on the surface and until the floor appears saturated and uniformly silk.
Finishing can be done 24-36 hours at the earliest when the oil is hardened. During this time, the floor must not be walked on and must be uncovered if necessary, if there is a need for traffic or work in the room, see the section Temporary cover.
Before finishing, the floor is sanded with a polishing machine attached to a green or black polishing pad, and the floor is carefully vacuumed. The finish oiling consists of 1 layer of oil applied with a polisher attached to an oil-saturated cotton cloth until the floor is saturated.
The floor is polished after approx. 30 minutes, and before the oil dries on the surface, with a polisher attached to a cotton cloth until the floor appears saturated and uniform silk mat.
The floor should dry for at least 24-36 hours and only achieve its durability after 3 days.
Temporary cover should as far as possible be avoided. If there is a need for traffic or work in the room after the basic oiling or finishing, a temporary cover can be established with a diffusion-open material, e.g. flooring and wood fiber boards, but no earlier than 1-2 days after final polishing.
The floor drawer must be taped and folded up on the skirting boards / walls to prevent dirt from penetrating under the cover. The cover must not be taped to the oiled floor as it deposits marks on the surface. Cover should be inspected and lifted for any removal of dirt during the cover period
In case of prolonged coverage, there will be a risk of damage and staining in the oil ring, which may necessitate a re-treatment.
The oil can be applied with short-haired roller, applicator or polisher with white polishing pad (approx. 150 rpm).
For polishing dry oil, polisher (150-300 rpm) can be used. It is recommended to use a high round pressure corresponding to a machine weight of 35-50 kg.
Excess oil is removed with lint-free cotton cloths, best on the polishing pad.
Application should be in well-ventilated rooms, and gloves and respirators must be used in accordance with the Danish Working Environment Authority's instructions for the type of oil used, see MAL code on the packaging and further information on environmental conditions and labeling rules in WOOD 57 Wood protection.
There is always a fire risk associated with oiling. All oil cloths and application rollers can self-ignite and should therefore be stored in water for at least 24 hours or burned after use. Even polishing discs can ignite. All smoking during oiling should not occur.
Maintenance of new oiled floors should be started immediately after they have been put into use and no later than 1 month after delivery to ensure continued oil saturation of the surface.
It is recommended to prepare a maintenance plan to ensure that the oil treatment is maintained in time in relation to load and wear on the floor.
First maintenance oil treatment should often be carried out immediately after moving in, possibly in connection with alignment of physical damage to the floor. Damage to oil-treated floors often occurs when moving in the form of wear, physical damage, dirt or wetting from wet footwear, and should be repaired before commissioning.
Damage to occupancy can advantageously be prevented with partial covers, especially at entrance areas.