Frequently Asked Questions

HekimBoard Frequently Asked Questions

Fiber cement plates are produced from which raw materials?
Fiber cement plates produced in completely natural raw materials. It embodies cellulosic fiber, cement and mainly micronized granulated quartz. It is durable as well as extremely light. It is easy to carry and assemble.
Are there any substance hazardous to man or environment in the structure of fiber cement plates?
Fiber cement plate is a man and environment-friendly material. There is no substance hazardous to man or environment in its structure. It does not have any gas emission in time or subject to atmospheric conditions.
How is the resistance of fiber cement products against chemical substances?
Fiber cement plates are not resistant to anti-limescale because of the lime it comprises. They are highly resistant to chemicals other than this. They are especially extremely resistant to alkaline.
Do fiber cement plates contain asbestos?
Absolutely NOT. This has been the most popular question since the day fiber cement plates were started to be produced. In fact, fiber cement plates are developed due to prohibition of asbestos use and they are certainly environment-friendly. A particular, imported cellulose kind obtained from pine trees is used as a bonding element instead of asbestos.
How will fiber cement plates react in a possible fire?
Fiber cement plates is definitely incombustible (A1 class incombustible building material according to EN 13501-1) due to materials in its structure. Only microcracks were observed on plates during sudden cooling after being exposed to 500 degrees of temperature for 2 hours. Therefore, there is no risk of fire and its spreading in buildings produced with fiber cement plates, because fiber cement plates will not burn even if they will be in direct contact with flames in high temperature. Important note: Insuring buildings against fire is very important today, as is known. Many insurance companies do not insure buildings in which combustible products, products which accelerate fire or which emit poisonous or health threatening gases in high temperatures are used or insure them against very high premium. For this reason, fiber cement plates are now preferred especially under roofing material instead of wooden plates.
How long is its physical life?
Fiber cement plates are very long-lasting due to the materials in its structure. There is no stipulated life for both cement and quartz. The plates have a structure resistant to the toughest conditions as they are produced under high temperature and pressure.
What kind of paints should be used in fiber cement plates?
Plates can be painted with acrylic or polyurethane exterior paints and plastic based interior paints applied in regular buildings, on condition these are water based paints, as the plates have cement and silica in their system. Grease based paints should not be used in fiber cement plates.
How many kinds do HekimBoard and TurkSiding plates have according to their surface appearances?
Both plate groups can be produced in both plain and wood pattern. A pattern in the appearance of cedar tree is used as wood pattern. Different patterns for decorative purposes are planned to be produced in near future. Wooden pattern fiber cement plates are better than wooden plates due to their superior features as well as their warm appearances.
Are fiber cement plates affected from seawater and UV rays?
Affect of moisture originating from seawater is out of the question. Thus, they can be used confidently on the exteriors of the buildings in coastal and extremely sunny regions.
Are fiber cement plates permeable?
They have approximately 25% water absorption rate, but they definitely do not permeate water. Their water absorption rates are less compared to reinforced concrete buildings. Please examine the section where tests are applied to fiber cement plates to receive more information.
Is there any need for special tools in application and cutting?
Fiber cement plates are very durable due to the quartz in their structure. Thus, they cannot be processed with cutting tools used in processing of wood or soft materials. Diamond tipped drill should be used for drilling. Dia edge saws or diamond tipped granite shearing knives developed specially for cutting work should be used. Detailed information can be received from Sales and Marketing department of Hekim Yapi.
Does a building built with fiber cement plate require plaster as well? What kind of putty is used in the joints of the plates?
Fiber cement plates do not require additional plaster as their surfaces are extremely smooth. You can apply lining or finishing paint directly. It ensures saving thanks to this advantage. Polyurethane or acrylic based putty can be used in the joints according to application type. Polyurethane based putties are generally more elastic and have higher adhesion specification. Acrylic based putties are easier to sand. It is more suitable to use polyurethane based putty on the exteriors and acrylic based putty on the interiors. You can receive detailed information from sales and marketing department regarding putty application.
How resistant are fiber cement plates against impacts?
Fiber cement plates are flexible due to homogenously distributed cellulose fibers in its structure. It is pretty resistant to blows and impacts. They are not affected by objects swept by the wind.
Do fiber cement plates produce hazardous gases during fire?
Absolutely not. Fiber cement plates are naturally odorless. They do not produce any hazardous gases or substances which affects human health during fire. They can used securely in places involving fire hazards due to this specification. Vinyl based materials which are allegedly incombustible will at least melt and emit poisonous gases during fire. Unfortunately many people have died due to these materials which melt or emit poisonous gases, despite not being affected of fire.
Do fiber cement plates provide sound and thermal insulation?
In essence fiber cement plates certainly are not insulation material. However, they have very good heating value and insulation values. Very good heat and sound insulation is achieved when they are used together with materials which have high insulation values.
Are fiber cement plates resistant to pests?
Yes, they are resistant to all kinds of pests which can affect wood. It does not accommodate pests.
How durable are the fiber cement plates to atmospheric conditions?
They are very durable to atmospheric conditions due to the raw materials in their structure and being autoclaved. The plates which are burned in 200 degrees of temperature and under high pressure for 20 hours become durable to the toughest atmospheric conditions. Most of the tests within the scope of the standards (TS EN 12467) it is subject to are already regarding resistance of the plates to tough environmental conditions.
Are they used safely in humid environment?
The water imbibition value (maximum 0,5 mm/m when imbibed in water for 24 hours) of fiber cement plates is very low. They are absolutely not affected from water and humidity and there is no structural deterioration observed in plates kept in 60 Co water for 60 days. For this reason, they can be used securely in humid environments and climates.
What are the most common areas of utilization of fiber cement plates?
They are especially used as interior and exterior wall, ceiling and flooring elements in the production of prefabricated buildings as well as under tile material in wet areas. They are not used as roofing material. They can only be used as lower support material (as material under roof tile, shingle or bituminous plate) in roofing. Fiber cement products which are used in different application areas more and more, are used as wall members in prefabricated pool application and as flooring member in poultry and cattle farms due to the fact that they are resistant to animal waste.
Are fiber cement plates compatible with other insulation materials?
Yes, they can be used with all of the known insulation materials. Extremely practical ready-made wall panels can be produced especially with EPS (expanded polystyrene), with adhesion method.
What are the differences of the interior and exterior plates shown in the product list?
They have no differences in terms of raw materials in their structures. However, the plates used on the exteriors have some additive agents in their structures for the purpose of reducing operating value to minimum against temperature differences as they will be used in environments in which they will be exposed to atmospheric conditions directly. If they will be used in environments where temperature differences in short periods of time are not high, interior plates can certainly be used even if they will be applied on the exteriors. Patterned plates and Turksidings are produced with exterior plate formulations.
What is the average life time of paints applied on fiber cement plates?
This is one of the most frequently asked questions. Unfortunately the life of the paint is related to the quality of paint and place of application more so than quality of fiber cement. There are many kinds of paints in the market ranging from very cheap to very expensive. Producing companies are giving 2-5 years of resistance and colorfastness to some paints developed to be applied on fiber cement plates. One other condition for the paint to remain intact for a long period of time is that there should not be any contact with moisture or water at the back side of the plates. There is a risk of blistering for the paint applied on the front surface in case plates are moistened or become wet on the back surface due to their water absorption features. For this reason water insulation is important in application with fiber cement plates. There will not be a problem with the paint for many years to come in the event mentioned precautions are taken in both fiber cement plate and paint applications.
Is there any data about insulation values ensured by your products when they are used singly? Is there any data that they do not cause any condensation? If they are not sufficient singly, can we apply insulation boarding on them? What can we use underneath as insulation provider?
Coefficient of thermal conduction is approximately 0,2 W/mK when the material is used singly. Thermal calculations can be calculated from this value. Styrofoam, glass wool or rock wool can be applied for insulation on bottom. Condensation is out of the question as our products have 25% water absorption rate. However, there may be condensation on the paint on the painted side. Insulation boarding can easily be applied on our products. Adhesion will be much stronger as this surface is rougher.
Is there a special screw required for the mounting of the plates or which screw we should use?
Countersunk self-tipped screws which can open their own countersink are suitable for mounting the plates. In case these kinds of screws are not found countersunk and self-drilling screws for metal sheet can be used. In this case countersink slot of screw head should be opened beforehand. Detailed information on this subject can be obtained from our application guideline.
Are mounting screws in plain plates and clapboards the same?
Same type of screw is used in both plates. Only screw lengths should be selected correctly for the sub-construction applied.
What are your comments and solutions for screw faults, if fiber cement will be applied in single layer?
The only thing to do is to ensure that the sub-construction which will be mounted forms a smooth surface. The plates do not form ineptitude by themselves.
Which materials will be required to cover the joint places to obtain a smooth surface which will not cause any problems in the long term?
Polyurethane based mastic should be used on joints. Problem usually only consists of cracking of paint. Let’s not forget that expansions or contractions occur on the joints due to different operation coefficients of materials which have different thermal expansion values. For this reason, water-based paints should be preferred to minimize cracks on the surface.
How long after material application maintenance or repair will be required?
The material does not require any special maintenance or repair. Maintenance or repair requirement usually changes directly proportional to the life of the paint used. Detailed information regarding this time should be received from the paint company. (There are paint companies in the market which give warranty up to 20 years).
What are the layers required to make ready the surface on which fiber cement will be assembled? (for light steel buildings)
Ready-made presses panels (fiber cement+styrofoam+fiber cement) can be used as walls in steel buildings or fiber cement plate is screwed on one side of the steel carcass constructed. Then moisture barrier and insulation material assembly is performed optionally and fiber cement plate mounting is performed on it and putty is applied on screw and joint places. After these procedures lining and paint is applied to conclude covering.