The brand Krass is registered by Lacra, a well-known manufacturer of paints and varnishes, construction products. Very popular among professionals and ordinary users is Krass sealant, or rather, a whole line of sealing compounds for the installation and repair of various structures and structures.
- Classification and scope of sealants
- Professional sealants
- Household products
- Ultraseal Series
- Assortment and features of wood sealants
- Household wood sealant
- Professional sealant "Thermo Barrier"
- Characteristics of a heater "Thermo Barrier"
- Texture and composition
- Drying time and conditions of use
- Consumption
- Life time
- Fire hazard
- Application Instructions
- Can I seal myself
- Warming of wooden houses: the opinion of professionals
Classification and scope of sealants
All sealants produced under this brand can be divided into three lines: for domestic and professional use, as well as the Ultrasil line.
Professional sealants
The professional sealant group includes several acrylic and silicone based products:
- Universal Silicone Sealant. Universal compound with silicone, designed for the installation of balconies, loggias, greenhouses, suitable for electrical insulation, is widely used in the automotive industry, shipbuilding.
- Sanitary Silione. It also has a silicone base, it has a high concentration of antiseptics, as it is designed for wet rooms, repair and laying of water supply pipes, sewers.
- Neutral Silione. Acid-free silicone compound (neutral). Suitable for working with metal, does not cause corrosion. Able to seal joints between parts of stone, concrete and any porous substrates.
- Thermo Barrier. Sealant containing acrylic resins. Designed to work with wood, timber, can be used in the technology of "warm seam". The tool is allowed to work on brick, concrete, plastic, plaster.
- Adryl Sealant. Also includes acrylic in the composition, designed to seal any cracks and cracks in non-deformable substrates. With it, you can install doors, mount windows.
Household products
In the Crassus line for domestic purposes there is a whole list of compounds that are very popular in homework, construction and repair:
- For the kitchen and bath. Silicone compound for movable and fixed joints, for exterior and interior use. Suitable for bathrooms, showers, kitchens, baths, can seal the gaps around sinks, plumbing, pools, stoves. It has a high degree of adhesion to glass, ceramics, plastic, metal, enamel, and contains high-quality fungicide. The sealant is resistant to the effects of chlorine, detergents, hot water, withstands heating up to +100 degrees.
- For aquariums. It allows you to harden and mount aquariums, terrariums, as well as glass cabinets, display cases. Withstands high loads, suitable for glass, ceramics, metal. Not toxic to living organisms, elastic, does not shrink.
- For concrete, natural stone. Designed for exterior, interior use, closes cracks in concrete, brick, granite, any other stones.It is usually used to eliminate cracks in the facades of the building, between the wall and the windowsill. Not afraid of water, ultraviolet, does not shrink.
- For metal. It is necessary for the installation and repair of metal products, for tin works, has high adhesion to iron, steel, aluminum, zinc and alloys. It does not darken over time, does not shrink, does not deform, withstands up to +80 degrees of heating.
- For stoves, fireplaces. It has excellent heat resistance (up to +1250 degrees), therefore it is widely used when installing fireplaces, stoves, chimneys. Suitable for brick, stone, concrete, metal.
- For interior work. Easily closes any gaps in the most popular building materials, suitable for mounting doors, window sills, drywall structures. It is eco-friendly, safe, does not provoke corrosion, is easily painted with any kind of paint.
- For wood. It is used in the arrangement of floors from laminate, parquet, boards, for fixing plinths, wooden elements on the walls. Helps strengthen door frames. After drying, the seam remains elastic, so sealants are suitable for deformable substrates. The joint does not darken, does not emit an unpleasant odor, it can be varnished and painted. The sealant is available in different colors - wenge, mahogany, oak and others.
- For roofs and roofs. It allows you to fill in the gaps during the installation of roofs, seams in roofing material, seals gutters, pipes, insulation. Waterproof, does not spread, does not shrink, can be applied even on damp substrates.
Ultraseal Series
This series includes three sealants that have excellent technical characteristics and good adhesion to different substrates. They are available in small tubes of 260 ml:
- Silicone Universal. It is used for sealing building structures, joints, expansion joints, it is used for glazing, installation of shop windows, sewers, cable channels, ceramic tiles. Helps to carry out minor home repairs. Due to the acid composition, it is not suitable for concrete, iron, marble, copper.
- Silicone Sanitary. Designed for rooms with high humidity, sealing water supply systems, sewers, ventilation, cold rooms, for filling joints between tiles. Resistant to mold, mildew, easy to apply, does not crack and does not deform over time. Acid, therefore, can spoil metal and delicate bases.
- Acrylic. Fills cracks in the walls - concrete, plastered, brick, wooden. It is used for mounting doors, windows, window sills, drywall, panels, for closing up any defects before painting surfaces. It has thixotropy, does not contain solvents. Not suitable for wet substrates and products in contact with water.
Assortment and features of wood sealants
When arranging wooden structures, two types of sealants can be used - from the professional line and from the group of household products.
Household wood sealant
This sealant can strengthen any cracks, gaps, defects during the installation of floor coverings and other structures. Also suitable for working with wooden windows on the inside. High elasticity of the composition allows it not to crack on deformable substrates and withstand shifts of up to 7%. Sealant advantages are:
- no toxins, odorless;
- moisture resistant;
- does not darken, does not turn yellow;
- easily smoothed out;
- quickly forms a seam of the right size;
- withstands heating up to +80 degrees;
- can be applied on concrete, brick, painted substrates;
- lightfast.
Professional sealant "Thermo Barrier"
With the help of such a sealant, the interventional seams are closed during internal and external works, they fill the cracks at the ends, eliminate the cracks in the doors, window frames. The tool is adapted to weather changes, withstands temperature extremes. It has the highest elasticity (elongation to break - up to 350%).
The advantages of the composition are as follows:
- vapor permeable, does not violate the microclimate in the house;
- well adheres to all types of wood;
- does not pass moisture;
- improves thermal insulation, reduces heat loss by 70%;
- easy to use, easily formed by the size of the seam;
- suitable for horizontal, vertical, inclined bases;
- It is realized in a white, colorless version, as well as in different tones of wood.
Characteristics of a heater "Thermo Barrier"
Sealant "Thermo Barrier" is widely used in the technology of "warm seam", it has suitable characteristics and is convenient to use.
Texture and composition
This tool is a pasty mass with good thixotropy. Sealant "Thermo Barrier" is one-component, is implemented in a ready-to-use form. It cures upon evaporation of moisture, resulting in a durable but flexible seam.
The tool is based on polyacrylic resins, it also includes improving and modifying additives. The sealant does not contain solvents, toxic substances, ozone-depleting components, therefore it is ideal for indoor use.
Drying time and conditions of use
Under standard conditions (temperature about +23 degrees, humidity 50%), the seam dries at a speed of 1.5-2 mm / day. It is best to apply the product at a temperature within + 5 ... + 35 degrees, but in winter you can work with it at –10 degrees. In the latter case, the drying time of the product will increase, and the period of its possible use may decrease.
to contents ↑The sealant can withstand 7 cycles of freezing and thawing within 24 hours, or a single freeze for 1 week. The minimum temperature that the seam can withstand is –18 degrees. You can not use the product with a moisture content of more than 90% and less than 50%.
Consumption
The sealant is available in 600 ml file packages, 310 ml tubes. The average consumption with a weld thickness of 3 mm and a width of 5 mm is 50 g per linear meter. If the parameters of the seam change by 5 mm and 10 mm, respectively, the consumption will increase to 100 g. A large package lasts about 6-12 linear meters.
Life time
The sealant has been used for at least 20 years with the correct application and compliance with the conditions of use of the product. During the entire period of work, it retains the properties declared by the manufacturer.
Fire hazard
The sealant belongs to the low fire hazard class KM1, because it does not contain combustible components, flammable solvents. Sealing improves the fire resistance of wooden structures, because the tool eliminates drafts and prevents the burning of fire. Under the influence of fire, the sealant:
- does not emit toxins;
- does not form smoke;
- promotes self-extinguishing of fire;
- retains properties (with a short contact).
Application Instructions
Before starting work, it is important to thoroughly prepare the foundation. To do this, the surface is cleaned of dust, dirt, any stains, degreased. Strongly absorbent wood must be primed 2-3 times with special primers on wood. If work is carried out in hot weather, the base is slightly sprayed with water.
A special polyethylene or polypropylene cord is laid in the seams between the timber and logs, which reduces the size of the hole and eliminates the contact of the sealant with the base. This is especially important if work is carried out on deformable structures. The sealant is applied over the cord in an even layer, gently smoothed.
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Can I seal myself
Work with Crassus sealants requires certain skills and experience. The instruction describes the process in detail, but to get the perfect result you need to know all the subtleties, nuances, why you need to be a professional. Beginners often make mistakes, as a result of which the service life of the seams is reduced, as well as their quality.
Each construction object has many features that simply cannot be indicated in full in the instructions. For example, wet wood requires drying, and too dry requires moisture, but not everyone can accurately determine the condition of a tree. Also, a layman is not always able to choose the right sealant that will optimally suit the material, type and size of cracks, crevices.
Warming of wooden houses: the opinion of professionals
When carrying out small housework, it is quite possible to deal with them yourself. If you need to perform the sealing of a log house or other serious structures, apply the “warm seam” technology, it is worth contacting specialists for help. This ensures the best choice of sealing compound, depending on the climate and specific conditions, and carrying out work in strict compliance with the methodology. The result will be high-quality seams that will last more than a dozen years!
