Wood bleach - which is better, how to use it correctly
Quite often with long-term use wood floor or other wood coatings begin to lose their former attractiveness - they turn blue and even blacken.
This happens if you do not regularly treat surfaces with special products that help protect the tree from fungus.
To remedy the situation, you can use certain methods and means. You will need to buy wood bleach and use it strictly according to the instructions.
Unevenly colored and darkened wood begins to spoil the appearance of the coating or buildings.
Usually, the very first sign of an emerging problem is blue specks, which gradually grow and merge with each other. If measures are not taken in time, black and even greenish stains will begin to appear - mold will actively multiply on the wood. Fungi that change the color of the wood will not only impair the aesthetics, but also damage the structure of the material. They make wood more susceptible to the work of wood-destroying fungi, which are not at all easy to destroy.
Bleaching will be an effective way to combat microscopic organisms, and it is usually carried out for the following reasons:
Whitening can help with blackness, because all the products used are antiseptics to some extent and remove mold, bio-damage, decay, and darkening. Usually, bleaches are very effective against fungi, bacteria and insects. And yet, bleached wood will be etched only superficially - up to 0.5 cm, but most of the funds do not penetrate inside at all, and therefore, to prevent blackening, it is better to start using fungicidal compositions on time.
Wood is an organic material that is very attractive to microbes, pests and fungi.
Usually, the reproduction of such microscopic organisms begins if the humidity level rises and the air temperature rises. In special cases, moss or lichen may even appear on the surface of the wood floor. Most often, black spots affect the wood of the baths, where the ideal conditions for the reproduction of fungal colonies.
It also happens that the wood turns blue or black for other reasons:
Mold and mildew can appear on absolutely every material, regardless of the type of wood. Even non-glued timber, despite the chemical impregnation carried out at the plant, microbes can settle, and even imitation of timber! The color of the material can change in different ways, and the breed will be of great importance here. So, the oak gets "gilded", and the birch begins to turn blue in spots, the dark ash brightens at all, and the nut acquires a bright red color.
Learning how to bleach wood should be done at the early stages of fungal infection, because otherwise the problem will not be completely eliminated.
So, which wood bleach to choose? Please note that bleach is a specific chemical and can lighten wood. Naturally, such solutions are not ways to give a perfect white color, but they are quite capable of removing all stains that are caused by mold or the rays of the sun. The whitening effect is made possible by the oxidation of chemicals and their effect on the wood pigment. Moreover, the presence of antiseptic additives will make it possible to destroy fungi that have already spread throughout the material.
There are many products on the market for whitening lumber at home. Experienced wood craftsmen recommend choosing quality products for indoor or outdoor use that work safely and without damaging the wood structure. Before starting work, you should carefully read the instructions - certain compositions will help only at the initial stages of fungal infection, and the rest successfully help even with a strong blue discoloration of the wood. Which remedy is better? most of the compositions that are sold in the store have a similar composition, and
the main groups can be distinguished:
- With hydrogen peroxide.
- With chlorine.
Both types of compositions can be attributed to the second class of hazard. Peroxide-based products can be considered safer, although they cannot be called 100% harmless. In any case, the chemical process begins in the uppermost layers of the wood, and you can also see the release of fumes into the environment. Chlorine-type bleaches contain dilute alkali from chlorine, and those made on the basis of hydrogen peroxide will also include weak acids or alkali as additives. The best remedies are described below.
Such a composition for whitening , like Neomid, is used not only to improve the shade of the material, but also for disinfection. The solution can be used to improve the appearance of the material in the interior of the room, as well as for work outdoors. Neomid 500 will restore the natural shade of wood, increase its grade, and at the same time will not change its properties and texture.The product can also be used to treat fuel pellets in order to increase the shelf life, because it easily removes all microbes and fungi. The advantages include low cost, excellent quality, safety and ease of application, suitability for all types of wood and the availability of various packaging on sale.
This product is best used to bleach wood that has lost color due to exposure to ultraviolet rays. In addition, the product is suitable for treating wood against stains, if the cause of their appearance is fungus or even exposure to atmospheric factors. Senezh perfectly copes with layers of fungus with any degree of complexity, up to deep damage to the material (up to 0.5 cm). It is also suitable for chopped, solid, planed lumber, as well as for combined finishing coatings.
It is only important that the wood is not coated with paints and varnishes before applying the bleach. The product is made on the basis of hydrogen peroxide and
has the following advantages:
In addition, the product is safe in terms of the risk of fire.
This hypochlorite wood bleach from the Finnish manufacturer "Tikkurila" is used to remove mold from wood substrates. The composition contains excellent components - sodium hypochlorite and sodium hydroxide.
Substances are quite aggressive, caustic, and require incredible care during work. In addition to unpainted and painted wood, this
bleach will work against mold on this surface:
- Fiber cement.
The product perfectly removes blue if it did not have time to get into the deepest layers. The composition has a jelly-like consistency, and therefore, before use, you will need to dilute everything with clean water about 1 to 3, which will significantly reduce consumption. You can apply the ready-made solution with your own hand using a sponge, spray and brush.
This bleach is suitable for removing stains from wood outside and inside the premises. It can be used on all types of sawn timber as well as solid wood.
The solution will remove various types of darkening - from long-term use, being in direct sunlight or in the rain. In addition, Sagus will destroy any fungi, microbes and insect larvae that love to settle in wood.The composition will penetrate deep into the wood structure, highly effective, does not lose its properties when frozen, does not damage wood, and also meets all fire safety requirements. It is sold in small packages and large cans (up to 10 liters).
The composition is made in Russia, but according to French technologies, which is why the quality is at a height.
It is used for preventive maintenance to protect wood from diseases and fungi, to remove mold, as well as to eliminate areas of blue discoloration, darkening, and yellowing.In addition, the drug is used to destroy lichen, moss, bacteria and insects inside and outside the room.According to reviews, this tool copes well with even the most stubborn dirt, and therefore, despite the high cost, the composition is very popular.
Bleach is perfect for working against mold and mildew on such materials:
After application, the composition creates a strong film that will protect the wood for at least a couple of years. Moreover, the composition increases the adhesion of wood, and after it, paints, as well as other materials will lie down l better and will last much longer.
Despite the large assortment of professional formulations, many people try to save money and use home remedies as a complete bleach for wood. In the photo you can see that the result is not always good, and often the material turns out to be completely spoiled, and also bleached unevenly.
And yet, for insignificant surfaces, you can use folk remedies, which should be pre-tested on inconspicuous areas.
Means for bleaching with chlorine content
Before applying chlorine or together with the main stage, treat the base with soda ash or even potassium carbonate. This helps to remove resinous substances and start preparing the material for further processing.
The order of work is as follows:
- Pour 5 liters of water into the container.
- Dissolve 1 kg of bleach in water, as well as 0.
15 kg of soda ash (soda ash).
- Stir and let sit.
- Drain the solution and apply to the wood.
- After 5 minutes, wipe the surface with 9% vinegar.
Usually the wood becomes lighter after 15 minutes, but for very dark material it is worth doing twice.
It is better to place the products in the most neglected form in the solution for half an hour, and before painting the wood should be washed with soapy water.
Bleaching with hydrogen peroxide
The simplest pharmacy hydrogen peroxide is not suitable for wood treatment, and a concentrated solution of perhydrol is required.In its pure form, it should be applied to the products with a sponge for washing dishes, and after 20 minutes, a neutralization reaction should be carried out with 4% vinegar. Pre-moisten the base with water, and then apply a 10% ammonia solution. Do not use this method on oak surfaces as they may turn green.
Peroxide is ideal for birch, beech and walnut.
Clarifying wood with oxalic acid
This acid is perfect for clarifying maple, poplar, linden and birch. You should take 5 ml of acid, dilute everything in 100 ml of water, and then apply to the wood surface. If you need a faster and more powerful bleaching, then prepare a solution of equal parts sulfuric and oxalic acid, and then add sodium peroxide (you need 2.5 mg per 5 ml of both acids).
When the desired color is obtained, neutralization is required. To do this, dilute 15 grams of chlorine type lime in 100 ml of water, as well as 3 grams of soda ash. First, add soda to hot water, and after cooling, add lime. Apply everything to the surface of the wood, and after an hour rinse off with clean water.
To carry out the work, you need the bleach itself (purchased or made by yourself), gloves, clean water, a container for diluting the product, brushes and sponges for application.
You can also use a spray gun to irrigate wood with a solution.
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