08 | 2012
A subfloor system and an underfloor heating system – together an optimal, nice warm solution for new constructions, structural alterations and renovation work.
Granab Subfloor System The best features are always out of sight
The subfloor system
The underfloor heating system
The combination
Granab manufactures subfloor systems for residential properties, offices, schools and public buildings. Steel floor joists with damping elements for effective impact sound and airborne sound insulation. The Granab Subfloor System is patented and type-approved with regard to its sound-damping properties, dynamic loads, strength and resilience. More than two million square metres of the Granab Subfloor System have been installed as part of various projects.
Uponor manufactures underfloor heating systems for all types of building. Underfloor heating systems are supplied complete with room regulation for an optimum indoor climate. Since 1972, Uponor has manufactured over 1,500,000,000 metres of PEX piping. Much of that has been supplied for underfloor heating systems installed all over the world. Uponor Underfloor Heating Systems feature jointless installation, which ensures a more reliable system.
The two systems have been developed to work effortlessly together. This combination guarantees you an optimum subfloor system with safe and comfortable underfloor heating. Efficient installation reduces the build time and helps to keep the overall cost down.
Our system enables you to walk barefoot on a warm bathroom floor
The system does not restrict the architecture or furnishing
You can choose a surface finish that adds to both the function and design
2 Granab Subfloor System and Uponor Underfloor Heating System
Uponor Underfloor Heating Systems Nothing warms as well as genuine underfloor heating
Benefits of a subfloor system • Effective impact sound damping and airborne sound insulation • Dry installation method. Can be installed directly on untreated concrete floors without the need for wet screeding • The system has an environmental friendly product declaration • Consists entirely of inorganic material and is not affected by moisture or temperature fluctuations
Benefits of an underfloor heating system • Underfloor heating systems are covered by a building product declaration • Quick response • Individual room control • The underfloor heating pipes (Wirsbo-pePEX pipes) are made of polyethylene and are converted to water on combustion • Unlimited choice of heat source
• Makes floors more comfortable for a better living and working environment
• Smaller electrical installations for wireless room regulation
• Type-approved
• No impact on the position of windows and other architectural features
• Adjustable in height 30 - 420 mm. • Free mounting of electrical cables, ventilation, water and sewage installation
• No impact on furnishing Common properties • Comfortable environmentally friendly floors
• Designed and tested as a total concept • Faster, more flexible and simpler construction method • Unlimited choice of flooring/surface • Easy to work with in the event of future structural alterations or renovation work • Contributes to a healthy home and environmentally-friendly residential properties, schools and public buildings • A well-thought out and efficient construction process. • Step sound reduction • Adjustable in height • Dry installation, gives minimal moisture • No uncontrolled heat from supply pipes
• Flexible pipe-laying and electrical wiring that is separate from the building design Granab Subfloor System and Uponor Underfloor Heating System 3
The best of both worlds A complete subfloor and underfloor heating system
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4 Granab Subfloor System and Uponor Underfloor Heating System
To date, Granab’s patented and typeapproved floor joists systems have been installed in more than four million square metres of floor in residential properties, offices, schools, shops and public buildings. The Granab Subfloor System is typeapproved. It has been tested and certified by the Swedish National Testing and Research Institute (SP) with regard to its sound-damping properties, dynamic loads, strength and resilience. The stable galvanised steel joists are extremely strong and are not affected by moisture or temperature fluctuations. Other incorporated components are made of moisture-resistant materials. The subfloor system’s inbuilt impact-damping properties ensure comfortable and silent floors. A lot of people are looking to reduce their electricity consumption for heating and are switching instead to district heating or another energy source. Uponor Underfloor Heating Systems can be connected to all types of heat source. It is not uncommon for houses under construction or being renovated to be fitted with underfloor heating. By letting the warmth rise from the floor, heat is distributed evenly throughout the room. Optimum comfort is achieved using a room thermostat and individual regulation of all rooms. With warm floors, the room temperature can be reduced a few degrees. This benefits both your wallet and your wellbeing, as the feet are the body’s own thermostat.
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Cellular floor
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Granab Subfloor System
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Uponor UFH Chip board
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Uponor Heat emission plates
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Uponor Underfloor heating pipes
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Plastic film
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Renovation gypsum board 6-13 mm
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Parquet flooring in free direction.
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Granab Subfloor System and Uponor Underfloor Heating System 5
Decorate any way you want Open up to creative architecture
The combination of a Granab Subfloor System and Uponor Underfloor Heating System does not simply mean being able to climb out of bed in the morning without the soles of your feet encountering a freezing cold floor. A silent, warm and comfortable floor also encourages greater freedom when it comes to decorating and furnishing your home. Underfloor heating allows you to use every square metre of floor surface. And think how easy it will be to paint and wallpaper the walls. No radiators or pipes that collect dust to ruin your decorating dreams. If you want to move the sofa or your favourite armchair under the window, then why not? This form of heating works well no matter how the furniture is arranged.
Being able to choose whichever surface finish you want encourages creative architecture
6 Granab Subfloor System and Uponor Underfloor Heating System
Quick and easy installation Complete documentation
The customer, installation engineer and builder all benefit financially
Both the Granab Subfloor System and Uponor Underfloor Heating System are well documented. You can download product information and installation instructions from our websites, www.granab.se and www.uponor.se.
Different installation alternative of Uponor Underfloor Heating System Uponor Underfloor Heating Systems can be combined with the Granab Subfloor System with different laying methods. You can choose between laying Uponor UFH Chipboards, groo-
ved 17, over the joists, joists mounting the Uponor UFH Cassette 20 with insulation between the floor joists, or Underfloor Heating on a self-carrying floor on top of the joists
Uponor UFH Chip board 17 on the Granab joists
Uponor UFH Cassette 20 between the Granab joists
Uponor UFH on a self-carrying floor on Granab joists
Grooved UFH Chip board is glued and screwed securely to the joists. Heat emission plates to distribute the heat are laid in the grooves and then underfloor heating pipes are inserted into the plates. Renovation gypsum boards are mounted before the flooring is laid. This gives free mounting direction of parquet.
Underfloor heating is installed in an Uponor UFH Cassette 20 with insulation, which is laid between the floor joists. The cassettes rest on Uponor Cassette support. The standard distance between joists is c/c 600 mm. The flooring can be of 22 mm parquet (alternative 22 mm chip board with 14 mm parquet). Follow the floor manufacturer’s instructions carefully.
On a carrying 22 mm chip board on a Granab joist system Underfloor Heating can be installed in Uponor 30 mm polystyrene panels, alternative the heating system can be installed in a ”self-levelling” poured screed. Consider the need of moisture proof layer.
Granab Subfloor System and Uponor Underfloor Heating System 7
Uponor UFH Chip board on Granab joist system
Parquet or vinyl flooring Ceramic Uponor UFH Chip Board 22 mm with grooves is glued along all edges and is screwed onto the steel profile c/c 600 mm. The panels are jointed on the joists according to installation instructions. Heat emission plates, which spread the heat evenly over the floor, are laid into the grooves followed by the Underfloor Heating pipe 17x2.0 mm. Gypsum board 6-13 mm is then screwed to the chip board with fixings at c/c 200 mm. Use rag paper below the floor covering when using parquet. Gypsum boards give free installation direction of parquet. Follow parquet supplier instructions (13-16 mm chip board with vinyl flooring can replace parquet).
8 Granab Subfloor System and Uponor Underfloor Heating System
Mount Uponor Underfloor Chip Board on the Granab steel joists c/c 300 mm. The panels are jointed on the joists according to installation instructions. And is glued along all edges and screwed. Heat emission plates, which spread the heat evenly over the floor, are laid into the grooves followed by the Underfloor Heating pipe 17x2.0 mm. Gypsum board 13-16 mm is screwed to the chip board with fixings at c/c 200 mm.
In dry rooms: The surface is protected with a primer prior to the laying of floor tiles in accordance with installation instructions. In wet rooms: Replace the gypsum board with an aqua board (approved resistance against mildew), the screed should be equipped with water barrier (membrane) prior to laying floor tiles in accordance with the supplier’s installation instructions.
Uponor UFH Chip board, grooved 17 Procedure for installation See even: Mounting instruction for Uponor UFH Chip Board 17 together with Granab Subfloor system.
First the surfaces where the underfloor heating and subfloor systems are to be installed must be cleaned and made accessible. The manifold cabinet should be positioned as shown in the drawing.
Secure the conduit pipes as required, with a distance of max 600 mm between the clips. The last clamping ring before the connection point must be no closer than 600 mm. The conduit pipe must stop approx. 150 mm above the finished floor.
Install the feed lines from the heat source to the underfloor heating manifold. The supply line is fitted to the upper manifold and the return line to the lower one. Each manifold is equipped with a balancing valve. The feed lines must be secured sufficiently.
Any excess adhesive should be wiped away, with particular attention being paid to grooves where underfloor heating plates or pipes will be fitted later. Holes (diameter approx. 65 mm) must be drilled in the Uponor UFH Chip board for the underfloor heating pipes, supply lines. It may be helpful to cut an extra hole in line with the first in order to facilitate the use of rising pipes. The position of the hole is shown in the underfloor heating drawing. It should be positioned where the loop field starts or ends.
Electrical wiring and pipes are drawn flexibly under the finished floor
The subfloor system should now be installed according to Granab’s installation instructions.
The protective pipe is secured to the underlying surface using pipe clips
Install conduit pipe from the manifold cabinet to each loop and connection point. “Connection point” means the place where the underfloor heating pipe is to come up through the Uponor UFH Chip board, grooved 17 (see underfloor heating drawing).
If the walls are to be plastered, make sure that the gypsum board beneath the manifold cabinet does not reach right down to the basefloor. The board must stop level with the upper edge of the Granab floor joist. Fit the Uponor Chip board over the Granab subfloor. All joints must be glued in accordance with instructions. Mount short joints over the joists and screw the chip board.
The underfloor heating pipes are drawn through conduit pipes to every room with underfloor heating
Make sure that pipes passing through the chipboard have a soft bend so that the pipe will not press against the parquet or floor surface that will be laid over the Uponor UFH Chip board.
Granab Subfloor System and Uponor Underfloor Heating System 9
Uponor UFH Chip board, grooved 17 Installation over floor joists
The turning grooves for the underfloor heating pipes must be milled as close to the opposite wall as possible. Check also that the depth of the groove is sufficient. Normally, the depth of the groove corresponds to the maximum depth of the Uponor Milling Machine.
After vacuuming, the floor surface must be covered with Uponor Heat emission plates. All straight grooves are equipped with plates. The distance between the plates must be 10-100 mm lengthwise.
Once all the loops have been filled and tested for tightness, each underfloor heating loop can be balanced in accordance with Uponor’s underfloor heating calculation.
The underfloor heating pipes can then be installed. Remember to connect the supply and return lines to the correct part of the underfloor heating manifold. Check also that the pipe have no tension when coming up and down from the Uponor UFH Chip board.
6-13mm gypsum board is then installed over the pipe and heat emission plates. It should be screwed into the chip board between the Heat emission plates c/c 200 mm. Then parquet can be laid freely in any direction.
All underfloor heating loops must be marked at the underfloor heating manifold in accordance with Uponor’s underfloor heating drawing with room designation and/or loop number. The protective pipes containing the underfloor heating pipes are drawn up and connected to the underfloor heating manifold
Before installing underfloor heating plates the floor surface must be vacuumcleaned carefully.
Before the floor is covered, the underfloor heating system must be tested for tightness in accordance with Uponor’s instructions. This testing must also be documented in a separate document.
10 Granab Subfloor System and Uponor Underfloor Heating System
It is important that the floor surface layer or protective flooring be fitted as soon as possible after the system has been tested for tightness. NB! The Uponor UFH Chip board is not intended for use as a working floor. Once installation is complete, install and function test room regulation.
Uponor UFH Cassette 20 with insulation mounted between Granab joists.
Parquet or vinyl flooring
Ceramic
Uponor UFH Cassette (34 mm) with insulation is laid between the metal joists c/c 600 mm on the special Uponor Cassette support. In the grooves is then Uponor Underfloor Heating pipe 20x2,0 mm. Mount a self-carrying chip board 22 mm over the joists, which is glued and screwed according to the instructions. Under parquet a step noise reduction layer (rag paper) should be installed according to supplier instructions. Alternatively, vinyl flooring can be used.
Uponor UFH Cassette (34 mm) with insulation is laid between the metal joists c/c 300 mm on the special Uponor Cassette support. Laid in the grooves is the UFH pipes 20x2.0 mm. Above is then a self-carrying chip board 22 mm mounted in accordance with the installation instructions. In dry rooms: The surface is treated with a primer prior to the laying of floor tiles in accordance with installation instructions. In wet rooms: Mount an aqua board (approved resistance against mildew), the ”self-levelling” poured screed should be equipped with water barrier (membrane) prior to laying floor tiles in accordance with the supplier’s installation instructions.
Granab Subfloor System and Uponor Underfloor Heating System 11
Procedure for installation
See even: Mounting instruction for Uponor UFH Cassette 20 together with Granab Subfloor system.
Work begins with the surfaces where the underfloor heating and subfloor systems are to be installed being cleaned and made accessible. Then install the manifold cabinet with the manifold positioned as shown in the drawing.
In between the joists of the subfloor system, support brackets for the UFH cassettes are fitted using the holes beside the joists. Three support brackets must be fitted for each cassette.
Install the feed lines from the heat source to the underfloor heating manifold. The supply line is fitted to the upper manifold and the return line to the lower one. Each manifold is equipped with a balancing valve.
For smaller cross bar compartments, cut support brackets and underfloor heating cassettes to fit
The feed lines must be secured sufficiently. Max 800 mm distance between clips. Install conduit pipe from the manifold cabinet to each loop and connection point. “Connection point” means the place where the underfloor heating pipe is to come up near the Uponor UFH Cassette (see underfloor heating drawing). Secure the conduit pipes as required, though with a distance of max 600 mm between the clips. The last clamping ring before the connection point must be at least 600 mm away. The conduit pipe must stop approx. 150 mm above the finished floor. The subfloor system 7000 should now be installed according to Granab’s installation instructions
12 Granab Subfloor System and Uponor Underfloor Heating System
The underfloor heating cassettes are laid on top of the cassette support
For passage between the subfloor bays there must be a gap of approx. 50 mm between the longitudinal and the transverse joist.
If a joist intervall has a c-distance less than 600 mm, the support brackets should be split and laid as overlapping. Both ends should be fastened together using pop rivets, tape or equivalent.
Cover the floor surface with Uponor UFH cassettes. The distance between the cassettes must be 10-100 mm lengthwise. The cassette stops 300 mm from the transverse floor joist.
If the walls are to be plastered, make sure that the gypsum board beneath the manifold cabinet does not reach right down to the floor. The board must stop level with the upper edge of the Granab floor joist.
Vacuum-clean the Uponor UFH Cassettes, particularly in the grooves, before beginning to lay the underfloor heating pipes.
Once the subfloor system has been installed, installation of the underfloor heating cassettes can begin.
Install the underfloor heating pipes in accordance with the underfloor heating drawing produced and connect them to the installed underfloor heating manifold.
Remember to connect the supply and return lines to the correct part of the underfloor heating manifold. Check also that the pipes are not coming loose and touching parts of the joists.
All underfloor heating loops must be marked at the underfloor heating manifold in accordance with Uponor’s underfloor heating drawing with loop number and/or room designation.
Rising pipes must have a soft bend so that they do not press against the parquet or flooring particle board that will be laid over the joist floor.
Before the floor is covered, the underfloor heating system must be tested for tightness in accordance with Uponor’s instructions. This testing must also be documented in a separate document. Once all the loops have been filled and tested for leaks, each underfloor heating loop can be adjusted in accordance with Uponor’s underfloor heating calculation It is important that the floor surface layer or protective flooring be installed as soon as possible after the system has been tested for tightness.
A finished underfloor heating system must be tightness tested before the surface layer is installed
Once installation is complete, install and function test room regulation.
An underfloor heating system allows almost complete freedom when it comes to furnishing
NB! The underfloor heating cassettes are not intended for use as a working floor
Granab Subfloor System and Uponor Underfloor Heating System 13
Uponor Underfloor Heating on Granab joist system with chip board
Parquet or vinyl flooring
Ceramic
Chip board 22 mm mounted on a Granab Joist system with c/c 600 mm. Mount Uponor Underfloor heating PS panel 20 (30 mm) with heat emission plates and pipe 20x2.0 mm. The surface floor, parquet or chip board (min 14 mm) with vinyl flooring can be laid.
Chip board 22 mounted on the Granab joist system with c/c 300 mm. In dry rooms: The chip board is treated with a primer before Uponor Pipe clip strips are mounted. A ”self-leveling” poured screed is then laid according to the supplier’s instructions. Then lay floor tiles according to normal instructions. In wet rooms: A water barrier (membrane) must be installed prior to laying floor tiles in accordance with the supplier’s installation instructions.
Procedure for installation Mount the Granab joist system in accordance with specification from Granab (Note! c/c 300 mm should be used with ceramic floorings) on a well cleaned floor. The chipboard (min 22 mm) should be mounted according the to the supplier’s instructions (Note! it should be glued and screwed). Feeding pipes can be mounted into the suspended floor system by using conduit pipes (34/29 mm for 20 mm pipe, 28/23
for 17 mm pipe and 25/20 for 12 mm pipe) from the already mounted manifold cabinet. When installing floor tiles pipe clip rails are used to hold the pipes. Pipe sizes of 12x1.7, 17x2.0 and 20x2.0 can be used depending on build height. When Uponor Underfloor panel PS 20 (30 mm) with heat emission plates is used only 20x2.0 mm pipe can be used. Note! See other instructions.
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Safe and simple planning Let us do it for you
When you choose a subfloor system from Granab, we will help to draw in the subfloor system on your plans. We will produce laying plans showing detailed measurements and the positions of all incorporated joists. The joists are cut according to the laying plan, and all incorporated adjustment units with damping elements are pre-installed at the factory.
If you choose an underfloor heating system from Uponor, we will also draw in the underfloor heating loops and the positions of manifolds and thermostats on the plans. You will receive a drawing showing both the subfloor and underfloor heating systems. We will also perform a pressure drop calculation for the underfloor heating system, making the system easier to balance.
Could it be any simpler? Please contact us for more information, planning or an estimate. The latest information is always available on our websites.
Granab Subfloor System and Uponor Underfloor Heating System 15
XXXXGB 08-11-X-SP Production: Uponor AB
Tel +46 (0)322-66 76 50 Fax +46 (0)322-66 76 55 www.granab.se
Uponor AB Uponor VVS Box 2 SE-721 03 Västerås
Tel +46 (0)223-380 00 Fax +46 (0)223-387 10 www.uponor.se
In keeping with our policy of continuous improvement and development, Uponor reserves the right to change specifications without prior notice.
Bygg- och Miljöteknik Granab AB Box 172 SE-447 24 Vårgårda