Ceilings, Floors & Roofs
Promat Systems for Ceilings, Floors & Roofs.
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What can Promat offer for fire protection to engineered timber joist floors?
Due to the high number of variations in the construction of engineered timber joists, where each manufacturer offers a different profile, it is not possible to provide a generic solution. We recommend that you contact the manufacturer of the engineered joists who should have relevant test reports and assessments. These solutions will often include
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Can SUPALUX® be installed in a permanently semi-exposed environment?
SUPALUX® can be installed in permanently semi-exposed environments providing the boards are not subject to wind-driven rain. When installed in a soffit applications it is expected to have a sufficient drip-edge detail or downstand included to ensure no-wind driven rain tracks along the underside of the ceiling construction. When installing SUPALUX
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What solutions can Promat offer for Swimming Pools?
Promat do not offer a solution to form swimming pool ceilings and wall linings because we no longer manufacture a rebated edge board which was a requirement for this system.
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What is the difference between the Promat SUPALUX® and Promat MASTERBOARD®?
Promat SUPALUX® and Promat MASTERBOARD® are high-performance Calcium Silicate derived building boards formulated without inorganic fibres and do not contain formaldehyde. Promat SUPALUX® is A1 non-combustible (EN13501-1), has a higher fire performance and is suitable for use in a wide range of internal and semi-exposed applications. Promat SUPALUX®
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How do I fire protect Timber Floors?
Promat have solutions which can provide up to 120 minutes protection to the underside of timber floors. Please see Chapter 4 of the Promat Fire Protection Handbook. Promat MASTERBOARD® and SUPALUX® are Calcium silicate boards, and are suitable for use in unheated or semi exposed applications.
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Which board should I use to provide 60 minutes fire protection?
A board in itself has no inherent fire resistance value, only a reaction to fire classification in accordance with EN13501-1, noting that all of Promat's calcium silicate passive fire protection boards achieve the highest rating of A1 non-combustible. It's only when a board is incorporated into a tested system that the system can be given a resistan
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I have a car park below my building and need to improve the thermal performance of the floor, what can I do?
Promat TLFR Board® is a composite panel comprising of a non-combustible facing board bonded to non-combustible stone wool insulation. It is installed on the underside of concrete floors to improve the thermal performance. It is possible to achieve a U-Value of 0.20 W/m2K using standard product and stainless steel fixings.
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Can DURASTEEL® be used to build a loadbearing construction?
DURASTEEL® can be used to build walls required to withstand wind or crowd loading, as well as the creation of load bearing floors. Please e-mail in your requirements to our Technical Services Team who can investigate and help further.
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I have a historic building or pub where the ceiling is listed, do you have a solution for upgrading the fire performance for 30 minutes which can be fitted from above?
When upgrading an existing ceiling in an historic building, pub or flats where the ceiling below cannot be accessed, 6mm thick SUPALUX® boards on 75mm deep support strips fixed to the sides of the joists can provide up to 30 minutes of fire resistance (fire integrity and fire insulation). The system can be applied for applications where the fire r
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I have a historic building or pub where the ceiling is listed, do you have a solution for upgrading the fire performance for 60 minutes which can be fitted from above?
When upgrading an existing ceiling in an historic building, pub or flats where there is no access to the ceiling from the room below; a combination of 12mm thick SUPALUX® board and 75mm deep support strips fixed to the sides of the joists, along with minimum 80mm thick x 23kg/m3 stone wool insulation can provide up to 60 minutes of fire resistance
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Do you have a solution for upgrading an existing lath and plaster ceiling for 60 minutes where I can leave it in place?
When upgrading an existing lath and plaster or an existing plasterboard ceiling from below; a layer of 12mm thick Supalux® board can be used to provide up to 60 minutes fire resistance without removing the existing ceiling. For details, please see page 113 (Fig 4.20.2) Chapter 4: Ceiling, Floors and Roofs for more details.
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Is DURASTEEL® required in a UKPN substation?
DURASTEEL® is specified for use by UKPN to provide fire and blast protection to the substation chambers. Please e-mail our Technical Services Team for more information: technical@promat.co.uk
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Can I fix the SUPALUX® self-supporting ceiling membrane system to drylined walls?
No, as the standard requirement for the perimeter of any of the SUPALUX® passive fire protection systems is that they must be fixed back to a solid, load-bearing element of the construction of equal or greater fire performance. This would include a concrete or masonry wall. The system can also be fixed to structural steel which has been fire protec
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Can I use Promat Moisture Resistant Ready-Mixed Joint Filler® in a semi-exposed environment?
Promat Moisture Resistant Ready-Mixed Joint Filler® is suitable for both interior applications, and is also specially formulated for use in semi exposed and high-humidity environments as a joint and screw filler for Promat MASTERBOARD® or SUPALUX® for lining the underside of a carport, undercroft, etc. When used in a semi exposed location, a final
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I don't have space to apply the additional 4.8mm hardboard above the line of my existing square-edged flooring within a Supalux® timber joisted floor construction. Is there an alternative?
If the installation of 4.8mm thick hardboard flooring above the line of existing flooring within a SUPALUX® timber joisted floor system isn't practical, our suggested solution would be to apply it below the line of the existing flooring. It should be mechanically fixed, tightly between the joists, and sealed with a bead of FSi PRYOCOUSTIC® fire resi
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Do you have a 60 minutes solution for Supalux® board under timber joists within unheated plant room areas?
Yes we have two 60 minute timber joist new ceiling lining systems:- Fig 4.10.5 below uses 9mm SUPALUX ® board with 80mm wide cover strips, the minimum joist size must be 130mm x 38mm at maximum 610 c/c, with minimum 19mm T&G flooring above. Fig 4.10.6 below uses 12mm thick SUPALUX ® board, the minimum joists size must be 150mm x 50mm at maximu
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Do Promat have systems for loadbearing steel joisted mezzanine floors which require either 30 or 60 minutes protection?
A mezzanine floor system which is protected using a single layer of 15mm thick PROMATECT®-250 will provide 30 or 60 minutes loadbearing capacity, fire integrity and fire insulation. The 15mm thick board will also provide fire protection to the hot rolled steel beams supporting the cold rolled joists, depending on the section factor (A/V) value of th
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Do Promat have systems for loadbearing steel joisted mezzanine floors which require either 90 or 120 minutes protection?
A mezzanine floor system which is protected using a double layer of 2 x 15mm thick PROMATECT®-250 will provide 90 or 120 minutes loadbearing capacity, fire integrity and fire insulation. The 2 x 15mm thick boards will also provide fire protection to the hot rolled steel beams supporting the cold rolled joists, depending on the section factor (A/V) v
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Can I suspend a secondary ceiling below a SUPALUX® suspended membrane ceiling?
It is possible to suspend a secondary ceiling below a SUPALUX® suspended membrane ceiling, providing that the grid and hanger system has been designed specifically to bear the load of the additional ceiling fixed below the grid. The hangers for the secondary ceiling should be fixed through the SUPALUX® board and into the grid above. We recommend usi
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How can I upgrade the fire and thermal performance of a timber joisted floor?
Our recommended solution would be the use of a Promat Supalux® ceiling system, for fire ratings of up to 120 minutes load-bearing capacity, integrity and insulation. The fully tested and certified arrangements for most variants of the system include the use of non-combustible stone wool type insulation above the line of the Supalux® ceiling lining b
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Can I upgrade the thermal performance of a Promat Supalux® 60 or 120 minute suspended membrane ceiling system without compromising the fire performance?
The fully tested and certified arrangements for 60 & 120 minute membrane systems includes the use of non-combustible stone wool type insulation above the line of the Supalux® ceiling lining boards, with a stated minimum density and thickness required for the fire performance element of each. To improve overall thermal performance through the cei
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How do I calculate alternative thicknesses and densities of non-combustible stone wool insulation within tested Promat ceiling systems?
When considering the specification of the insulation element of Promat's ceiling systems, the following statement is given the within the Promat SUPALUX ® independent 3rd party certificate, Certifire CF420: “Alternative thicknesses and densities of stone wool insulation may be fitted provided that the weight per square metre is at least that specifi
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Can you use Promatect®-250 mezzanine floor system, if the steel joists do not meet the minimum depth requirement of 172mm?
The minimum depth of the galvanised steel channel joists is 172mm, to comply with our testing and certification. Smaller joists are not acceptable and should not be specified. Where the existing galvanised steel channel joists do-not meet the minimum requirement, it would be necessary to fit joists alongside the existing ones which comply with the m
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Can I use Intumescent Paint to protect the structural steelwork supporting your PROMATECT®-250 Mezzanine Floor system?
Our recommendation for the structural steel beams supporting the mezzanine floor would be to use boarded protection, as per the details within our Technical Data Sheet TDS038 30 & 60 minute & TDS039 90 & 120 minute PROMATECT®-250 steel joisted mezzanine floor. Intumescent Paint does not provide full insulation protection therefore this e
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What is the expected service life of PROMAT Durasteel®?
Etex Building Performance Limited's passive fire protection products and associated components, when supplied by our Company and designed and installed in accordance with the conditions and procedures in the Promat Fire Protection Handbook, Promat technical literature, specification documents, associated CAD drawings and any specific technical recom
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Can I fix the Promat Masterboard® directly to timber joists for a Swimming Pool?
No. Masterboard® is not suitable to be fixed directly to the underside of the existing timber joists as the timber would potentially expand or shrink with the changing humidity around a swimming pool environment. There is a risk that the joints of the finished system may crack.
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When specifying a Supalux® timber joist floors, if the joist depth does not meet the minimum depth required can you add additional timbers to the underside of existing timber joists to make up the remaining depth for the minimum required?
Unfortunately this is not achievable because the timber joist element is a load bearing part of the construction, we have no testing and certification to prove this will work in a fire situation as the timbers are prone to twisting. Timber chars at a rate of 0.6mm per minute, therefore the minimum depth and width are critical. A possible solution wo
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Where can I source the metal framing for Supalux® suspended membrane ceilings?
Where there is a requirement to source the metal framing grid system, including all hangers and connectors, for Supalux® suspended membrane ceilings, there are two sources known to Promat within the UK: Protektor UK Limited and European Steel Profiles Ltd. Contact details for these companies are listed below: Protektor UK Limited: Paul Lodge | Techn
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Can I install a Supalux® timber joisted roof void detail to a sloping roof?
This type of ceiling system is only intended for use on horizontal timber roof joist elements and not for sloping roofs. The testing and certification we have for these systems, rated at 30, 60 and 120 minutes integrity and insulation, does not include installation at an angle and doesn't readily lend itself to the dimensions normally associated wit
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How do I prime Promat boards before applying a plaster finish?
All Promat boards tend to have a high suction and therefore it is generally difficult to apply gypsum plaster. Traditionally PVA has been used, apply a number of sealing coats of diluted universal primer/PVA (e.g. 1 part PVA and 5 parts water). Sealing coats should be allowed to dry thoroughly (approximately 24 hours). Then apply a bonding coat (3 p
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Can the SUPALUX® Suspended Membrane Ceiling be fixed into a stud partition at the perimeter?
The tested construction, includes perimeter angles for the SUPALUX® Suspended Membrane Ceiling that are fixed into a solid, loadbearing element of the building construction that's of equal or greater fire performance to the ceiling system, on all four sides. This is typically a concrete/blockwork/brickwork/masonry wall, but can also be suitably fire
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How do I firestop metal sprinkler pipes penetrating the SUPALUX® Suspended Membrane Ceiling?
Where metal sprinkler pipes pass through the SUPALUX® ceiling boards, the boards should be cut to a tight fit around the pipes and sealed with FSi Promat Pyrocoustic® Sealant. Above the ceiling, the pipes should be wrapped in 40mm thick x 40kg/m3 stone wool insulation for a 500mm length above the ceiling. This is to help mitigate the loss of fire in
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Can the SUPALUX® Self-supporting Membrane Ceiling be fixed into a stud partition at the perimeter?
A SUPALUX® Self-supporting Ceiling cannot be fixed into a stud partition at the perimeter. The perimeter channels for the SUPALUX® Self-supporting Ceiling should be fixed back into a solid, load-bearing element of the building construction that’s of equal or greater fire performance to the ceiling system, on all four sides. This is typically a conc
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Is there any ISO14001 Certificate available for TLFR® board?
Yes. Please get in touch with our Promat Technical Support Team for the relevant ISO 14001 certificates: Email: technical@promat.co.uk Phone: +44 (0)800 373 636 (Monday - Friday, 9 am to 1 pm) Promat TLFR® Board is created by combining Promat calcium silicate facing board and stone wool insulation, with AIM Ltd being responsible for manufacturing th
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When specifying the PROMATECT®-250 mezzanine floor system, are there any remedial actions that can be taken if my galvanised steel floor joists are less than the minimum 172mm as stated in your technical data sheet?
It is not possible to specify PROMATECT®-250 for a mezzanine floor where the joists are less than 172mm because of the size of the joists used to complete the test and the fire assessment following the test. Our solution would be to install a SUPALUX® Suspended Membrane Ceiling attached by hangers to the galvanised steel joists to form a fire rated