Knauf plasterboard fire rating

An established name for gypsum products and accessories within the building industry, Knauf Nigeria is the brand of choice for contractors, engineers, and project developers. With 75 years experience in the field, Knauf has expanded to share German expertise and quality in over locations in 37 countries.

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Our colleagues are available to support you via your favorite remote channel. Welcome to Knauf Nigeria Build for the world we live in An established name for gypsum products and accessories within the building industry, Knauf Nigeria is the brand of choice for contractors, engineers, and project developers. Lagos State governor promises land for Knauf group. KNAUF group to invest also in the building of training center. Contact Us. Knauf Partners.There are various ways in which plasterboard can get wet.

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It may be due to direct contact with water, such as flooding or a leak, or condensation forming on the surface of the plasterboard. Plasterboard can also become wet due to conditions where it will absorb large amounts of moisture from the air. This can include constant high humidity caused by environmental conditions, or possibly from standing water close by, combined with poor ventilation.

Whatever the cause, left for a period of time moisture can damage the plasterboard and result in costly repairs. When plasterboard is exposed to elevated levels of moisture for an extended period, it may affect the integrity of the plasterboard and its ability to perform its intended function. Plasterboard acts like a sponge and can absorb a large amount of moisture. This can lead to sagging, bulging and discolouration of the board and turn it into the perfect breeding ground for unsightly and unhealthy mould.

Usually the paint on the surface of the drywall will protect it against small leaks and spilled water, but the problem occurs when the water gets to areas that are not protected by paint, such as the back of the plasterboard and at the floor or ceiling. Plasterboard that has become wet during its service life must be assessed for damage and then either repaired or replaced. In all circumstances it is recommended to ask a plasterer for a professional evaluation of the water damage, who will be able to advise if repair or replacement is required.

Knauf always recommend replacing the affected area if any doubt exists regarding the integrity of the installation. Also read our blog Getting back in shape after flood damage. When there is active flooding in a building, always make safety the first priority.

15mm Fire Panel (formerly known as Fireshield) Plasterboard - Wall Board Knauf

First turn off all electricity to avoid the risk of electric shock. Identifying and removing the source of water or moisture is the next step in addressing the problem. The earlier the source of water or moisture is found and removed, the better the chance that the integrity of the plasterboard will be maintained. It is recommended to remove water from ceilings by drilling a hole to let accumulated water escape, but take care: A sagging or saturated ceiling may collapse and temporary props are recommended.

When plasterboard has been exposed to moisture, there is always the risk of mould. Given the right circumstances mould can grow on any surface — including glass! Plasterboard is no exception. Before an assessment can be made about the integrity of the plasterboard, it must be allowed to dry completely.

The affected area must be checked to ensure water is not still present in the wall and ceiling cavities.

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All insulation should be removed to allow the board to dry out. Insulation that cannot be readily removed, such as in a wall cavity, may prevent the cavity from drying at all. If condensation has formed on a plasterboard surface or the plasterboard is absorbing moisture from the air, the area must be ventilated to reduce humidity. Fans should be used to generate air flow and increase ventilation. All windows and doors of the dwelling should be opened to reduce the humidity and speed up drying.

A moisture meter will provide an accurate reading of the moisture content of plasterboard, but a screwdriver poked into the board will also be able to tell you if the board is wet or not. It is not possible to give a definitive answer on whether plasterboard can be salvaged once it has become wet. It depends on the individual situation and factors such as:.

Generally, plasterboard may be salvaged if adequate drying conditions are achieved, but if any of the following signs of water damage are present then the plasterboard may lose the ability to perform its intended function and may therefore need replacing:.

Plasterboard swells when wet and may pull away from fasteners and remain insecure even after drying. The fixing system used for the plasterboard, including fasteners, adhesive and also the frame, must therefore be inspected and assessed by a professional for damage. With fire rated plasterboard and other specialty application products, some or all of the properties can be compromised once the product has been damaged.

How to Fit Plasterboard to Ceilings. The Easy Way To Hang and Attach Drywall / Ceiling Boards

For these specialty products, Knauf cannot validate performance after any water damage has occurred. When replacing plasterboard in a fire resistance or sound rated system, care must be taken to ensure that all repairs are consistent with the specific fire or sound rated design initially constructed.

TruRock HD i ncorporates enhanced impact, water and fire performance, sound insulation properties and has the added benefits of mould resistance. Call Us.We manufacture standard and high performance boards for all drylining requirements and applications.

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knauf plasterboard fire rating

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We are one of the UK's leading manufacturers of plaster, plasterboard and drywall systems, but we make more than just drywall. Take a look at our comprehensive product range which includes ceiling, flooring and exterior products. Contact us Find a stockist. Main Content Home Systems and Products. Systems and Products. Systems We know that finding the best solution for your project is paramount and our systems give you a leading edge, through simplicity of construction, performance and value for money.

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Email address. I consent to receiving information about Knauf news, events and other updates by email. I agree to Knauf's privacy policy.Knauf InterHome is a separating wall system that contains a central fire barrier built between timber or steel house frames. This central barrier is composed of one layer of 25 mm ShaftLiner or InterShieldwhich offers robust fire and sound insulation performance.

The only difference between ShaftLiner and InterShield is the mould and water resistance offered by InterShield, which can help to prevent mould from forming on interstitial structures during construction.

Compared to other separating wall systems, InterHome offers easier installation because it allows non-fire rated installation of internal linings and non-fire rated penetrations of the wall linings during construction. ShaftLiner and InterShield are also much lighter in weight than other similar products and preferred by contractors and builders. InterHome is available for both low-rise projects e. Need assistance selecting the right Knauf products?

Find a Store. Find a Local Distributor. InterHome Systems. Filter product results Filter. InterHome Systems Classic Cove Cornice Cement Decorative Cornice Linings for curved walls and ceilings Linings for exterior applications Linings for fire and wet area rated applications Linings for fire rated applications Linings for glancing light applications Linings for impact rated applications Linings for sound rated applications Linings for walls and ceiling applications Linings for wet area applications Linings for X-Ray shielding applications Advanced Search Reset.

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knauf plasterboard fire rating

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knauf plasterboard fire rating

Something went wrong. Please contact administrator. Knauf InterHome. Knauf InterHome High-Rise.What is an FRL and why are there three numbers?

What are Fire Hazard Properties? What is Insipient Spread of Flame? What is the difference between load-bearing and non-load bearing, and how does this relate to fire resistance? In this article we explain what each one means and how it relates to selecting a wall or ceiling system. Usually a building surveyor or certifier will specify the required FRL. The FRL is the ability of a building element to withstand a fire under test conditions for a certain period of time and consists of the three criteria listed below:.

This means that if a building element were exposed to a standard fire test, it would not be expected to fail for 60 minutes in each of the three criteria. These FRLs can be many combinations of the three criteria, eg.

A dash in the FRL means there is no requirement for that criterion. There are many ways in which an FRL can be determined.

They are listed and detailed in BCA Schedule 5 and include the following:. FRLs are about how well a system of components contains a fire.


Fire trying to spread along a concrete corridor would do so more easily if it were lined with flammable materials. Ceilings with a Resistance to the Incipient Spread of Fire state the ability of a ceiling to limit the temperature rise in the ceiling cavity [shown below].

Ceilings with 60 minutes of RISF are specified by the BCA and are appropriate where the ceiling is the primary fire barrier that limits fire spread by way of the ceiling void.

An example of where this type of ceiling is required is a Class 2 residential building which has several apartments on the top floor. The apartments have fire resisting separating walls between them which finish at the ceiling under a shared roof space. The RISF 60 ceiling prevents fire spread from one apartment, up into the roof space and then down into a neighbouring apartment.

Therefore walls such as those holding up a floor or roof above are load bearing.This article has been written to explain the differences in classification and examines the new legislation released by Civil Defence in Dubai. Descriptions commonly used by building material manufacturers to describe their products include terms like noncombustible, non-flammable, ignition resistant, Class A rated, fire-resistant and fire safe.

Whilst Fire Safe is not a defined standard and is purely marketing nomenclature, all the other terms relate to the description of the relative combustibility of materials. The only materials that will not burn in a fire or contribute to a fire are non-combustible materials.

In insulation, this means using glass or rock mineral wool. All other materials will burn and, in high rise buildings, where the control of fire spread is critical, best practice is to use nothing but non-combustible materials to prevent the loss of lives in the event of a fire. The objective of this article is to describe how building codes and associated standards have defined and used these terms, and to provide ways to evaluate differences between combustible materials.

Building codes and test standards have provided definitions for some terms commonly used to describe how a given material or assembly will perform in a fire.

Terms that have been defined include:. Combustible and noncombustible refer to the performance of a material e. Fire-resistant can refer to a material or an assembly e. Ignition resistant can refer to a material or an assembly e. Definitions of these terms have been developed by a number of groups. Combustible materials are those that readily ignite and burn. Many common construction materials are combustible, including wood and wood-plastic composite and petrochemical based plastic and rubber products.

A number of tests have been developed that evaluate the fire performance of combustible materials. Two key properties are helpful in characterizing the relative combustibility of different materials — flame spread index and heat release rate.

The flame spread rating of a material is determined by subjecting material placed in a horizontal tunnel to a gas flame. A material rated as Class A would have a lower flame spread, and therefore a better performance rating, than a Class C material.

The results of the flame spread test results in a numeric rating.