How to put linoleum on OSB correctly
Every time it comes to the next repair, and it is necessary to lay the linoleum coating, there are concerns about how justified it is to lay linoleum on OSB slabs. There seem to be no serious problems in order not to apply OSB, but there are doubts whether the installation of roll material will damage the wood base, for example, it can begin to rot, as is often the case with a plank floor. Let's see if it is possible to lay linoleum on OSB.
The most ardent opponents of the use of chipboard give such arguments against its use as a substrate for linoleum:
- The material will not provide reliable insulation against the formation of condensation that forms under the floor covering. As a result, sawdust of the pressed type will begin to overheat, and the surface will begin to crumble.
- The structure of OSB is highly porous, and it, like a sponge, absorbs moisture, and therefore an aroma will appear, maybe mold with all the ensuing consequences.
This problem is usually associated with the fact that linoleum is a vapor-proof coating based on PVC, polyester film and polyurethane. But here it is not even a matter of the structure or qualities of linoleum / OSB, the problem is to assemble everything in compliance with the technology and the use of the right materials. Such slabs on the floor for laying linoleum are perfect. When compared with a base made of boards, fiberboard or chipboard, OSB will be much more reliable and better.
It is much easier to lay linoleum on an OSB slab than on a concrete or boardwalk floor. The parameters and structure of the plate made of pressed saws are such that, subject to the laying technique, this method will guarantee 2 main and weighty arguments:
This will mean that the coating will not experience bending and shear loads, which means that after a decade of operation, there will be no faults and cracks on the surface. With regard to poor resistance to water vapor and condensed moisture, this problem can be solved either by double-sided treatment with special impregnations for wood, or by applying a water-resistant modification, which is known as OSB 3 .
In its composition there are no harmful formaldehydes or phenols, as in the case of chipboard, and at the same time the material is able to withstand direct contact with water and can be used indoors, and it is also laid on a covered terrace or veranda.
The only tangible drawback of this material is the rather high price. It makes sense to use the third version of OSB if linoleum is required to be laid directly on the concrete floor. The chip-oriented board plays the role of a thermal insulator and a vapor barrier, like 2 in 1. In other cases, you can lay linoleum on OSB 2 without fear.
Naturally, the wood-based panel backing material must be prepared in advance. As a minimum, it is important to ensure that there is no damage and perfect surface geometry. If the material is stored improperly, the sheets begin to bend, because under the influence of the sun and air, the pressed shavings quickly begin to age and crumble. A high-quality slab for the floor for laying linoleum should be perfectly flat and sharp angles of 90 degrees. OSB manufacturing technology is such that one of the sides is necessarily smooth.
If the web of rolled material is planned to be laid on an adhesive composition, then treat OSB under linoleum on a wooden floor with a protective compound only from the back side. Otherwise, we recommend varnishing or coating with linseed oil in full.
Good advice! Laying linoleum on OSB can be done without varnishing and processing with linseed oil, if you are 100% sure of the quality of the wooden floor.
Excellent ventilation of the underfloor space guarantees reliable preservation of both floorboards and joists, as well as OSB boards themselves. Separately, attention should be paid to the preparatory stage of the slab material for flooring on a concrete floor without insulation.
For example, if you plan to lay the material in a summer kitchen, or on a veranda, hallway, where there is no expanded clay or expanded polystyrene under the screed. Modern types of adhesives help to glue fiberboard, chipboard and OSB directly onto concrete without any problems. But the cold surface of the cement, even with waterproofing, can become a source of condensation. It is important to fight with this, and therefore wooden slats are sewn on the back of OSB panels, which are treated with varnish or oil impregnation. The air gap will provide additional thermal insulation and at the same time effectively remove water vapor from under the rough OSB layer.
The most difficult task will be leveling the base for the future linoleum coating. If you plan to lay boards directly on a wooden floor, then the surface of the floorboards will be milled or sanded to increase the contact area and level the base horizontally. The gaps between the floorboards do not need to be repaired; if there are "weak" boards, they need to be stitched crosswise with nails.The situation will be more difficult when there are destroyed or rotten logs under the wood floor. In this case, it is required to remove the floorboards, sew the bars onto the supporting beams and put the material back.
Before laying linoleum, the joints must be filled with sealant. On uneven concrete substrates, it is most often required to lay a self-leveling layer; it is extremely difficult to adjust the surface to a horizontal state using a conventional concrete screed.
The linoleum coating is usually laid on the slab without the use of an adhesive, only if it is necessary to replace the floor in a small area. In this case, only the joint lines between the OSB boards are glued. For gluing, you can use acrylic water-based adhesive compositions, both foreign and domestic production.
For example, there is a wonderful Soviet glue PVA-M, or "POVISOL PROBOND". The best solution will be polyurethane adhesives, for example, "EcoSimr", "Basf Fast 3000" or "Legnorol 2000". It should be noted that the strength of such glue compositions is so great that it will be impossible to tear off the incorrectly glued linoleum from the plate. It is important to lay linoleum in the direction of the exit, because you need to roll and squeeze out bubbles.
It is possible to determine how smoothly such a panel lies on the black coating only by the fact of fitting OSB.
For this reason, the sheets must be brought into the room in advance and laid on the floor without fastening. So you can determine the place of the closest fit of OSB to the floor, the presence of height differences at the seams between the sheets, mark the cutting lines and cut the material. Sometimes it is required to load the panels laid "idle" in order to slightly align and press the material to the base before the OSB is fixed to the rough base by means of self-tapping screws or glue.
Mark and number the sheets in order not to be confused during the final installation. Installation of OSB boards on the surface of concrete can be done with glue and self-tapping screws with dowels.
If you plan to lay the material in the back room, then both linoleum and OSB can be glued using waterproofing mastic.
If there is a layer of insulation under the concrete screed, it must be laid on an adhesive basis. The adhesive is a thixotropic, viscous mixture that is applied to concrete with a notched trowel. After the mixture hardens for a couple of days, and therefore it is required to plan the work and lay the sheets so as not to step on the laid segments.
Further, it remains only to close up the tile joints and lay linoleum.
Manufacturers suggest using it for laying the canvas. If customers are not confused by the cost of the material of German origin, then it will be possible to lay on the branded adhesive without paying attention to the structure of the floor. One of the styling options is shown in the video.
Despite the fact that now there are very effective , strong and safe adhesives, in the case of OSB laying under linoleum falls on the floorboards, it is better to limit the use of glue.
It is believed that OSB sheets and linoleum need to be fixed point-wise on a plank floor, leaving most of the area free.
This makes it possible to maintain the system of beams and lags.
Moreover, laying materials is not the most difficult thing; it is important to think over how to remove it in the future during major repairs.
The idea of laying linoleum on the surface of a wood board in practice turns out to be quite justified and successful, even if the price of the rough base is higher than fiberboard or chipboard. The parameters of the particle board are the best suited for using it as a lining material, and can be used under a laminate or parquet.
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