Use and building regulations! Duofor® Dovetail Plates are produced EN1090-1 and are CE marked.  
Production according to NEN-EN ISO 9001: 2008  
Steel grade S320GD with at least 275 g zinc / m².  

Environmental class / permitted fields of application:
C1: Heated buildings with a normal atmosphere. Zinc quality Z100 (100 g zinc / m²)
C2. Unheated buildings with an atmosphere in which condensation can occur. Zinc grade Z275 (275 g zinc / m²)  

Attention!
Falling below the permitted values shortens the service life of the reinforcement of the plates!

Dovetail Plates
Combifor floor system
What is the fire resistance? Duofor® Dovetail Plates have a fire resistance of 60 minutes. A wooden flooring or a wooden board is not necessary. The strength of the wooden beams is crucial for the fire resistance. The false ceiling is merely an additional, less decisive fire protection. Duofor calculates the overall construction for you.

Dovetail Plates
How to install Duofor® Dovetail Plates? In width: The profiles are superimposed with the outside, colour coding on colour coding  
In length: The plates are laid alternately with the label up or down, colour coding on colour coding  

First, second, third plate, etc. are laid with the sticker facing down. Then second, fourth, sixth plate, etc. is laid with the sticker pointing upwards.



Dovetail Plates
DTS-G Impact sound insulation
What economic lengths are available? The length of the panels of our standard DUOFOR® Dovetail Plates is economical and effective in use.
The standard lengths often coincide with the existing beam distances + 100 mm for longitudinal overlap.  

1300 mm: 2 x 600 mm + 100 mm / 1600 mm: 3 x 500 mm + 100 mm. 1
900 mm: 3 x 600 mm + 100 mm / 2200 mm: 3 x 700 mm + 100 mm.  

For the less frequent center - to - center distances of the beams, the lengths 1200 mm, 1530 mm, 1830 mm and 2000 mm are available.

Dovetail Plates
Are the beams stable enough for this floor construction? Duofor offers a free installation plan and panel optimization according to the width and height and the maximum distance between the wooden beams (from center-to-center)  

Further important questions:

- Which ceiling is attached to the beams?
- Are walls built in for apartment separation?
- What is the use of space (apartment, office, etc.)?
- What is the total thickness of the dovetail floor?
- What will the flooring look like?


Dovetail Plates
DTS-G Impact sound insulation
Combifor floor system
What is the maximum axis dimension? The maximum axis dimension is 2.5 m (from middle wooden beams to middle wooden beams).

Dovetail Plates
Combifor floor system
Are Duofor® Dovetail Plates bolted or nailed? The plates should not be screwed but only nailed. The plate can be nailed with three nails on the wooden beam in a non-floating installation.
The panels can be fixed with only two nails per panel width in the upper profile when a floor heating is installed. The panels must not be attached to the structure for a floating installation.

Dovetail Plates
DTS-G Impact sound insulation
How much cement needs to be applied? Floors with planking:                      20 mm
Standard floors:                              34 mm
Soundproofed floors:                      34 mm
Floors with underfloor heating:       40 mm

At dimension with span size greater than 1500 mm at least 59 mm or more applied to dovetail plates.


Dovetail Plates
DTS-G Impact sound insulation
Combifor floor system
Recanor - Impact sound insulation
How many kilograms of cement are needed per square meter? Cement screed on the dovetail plate:   Quality C20, consumption 25 kg / m² / cm
Concrete on the dovetail plate:             Quality C20 / 25, consumption 25 kg / m² / cm  

Attention!
For filling the panels: extra 20 kg / m² are required


Dovetail Plates
DTS-G Impact sound insulation
Combifor floor system
Recanor - Impact sound insulation
Is there an additional need of reinforcement and grounding? No, Duofor® Dovetail Plates serve as reinforcement.
No, you can ground directly on the plate.

Dovetail Plates
Combifor floor system
How to glue tiles to the screed? Tiles must not be laid directly on the screed of the dovetail panels.
Tiles must be laid on a standard mortar or tile adhesive layer.

Dovetail Plates
Combifor floor system
How to install underfloor heating? The underfloor heating pipes must be installed transversely to the profile direction. The heating pipes and hoses are fixed easily with the DuoKlip (Ø 16 to 22 mm)

Dovetail Plates
Combifor floor system
How to connect Duofor® Dovetail Plates? In length: The first and third plates are laid down with the sticker, the second and fourth plates are laid with the sticker facing up.  
In width: Colour coding on colour coding.

Dovetail Plates
How do Duofor® Dovetail Plates overlap in the longitudinal and transverse directions? On beams: Longitudinal overlap between 50 and 100 mm directly on the beam. 
On wooden flooring: Longitudinal overlap can be made to choose between 50 and 100 mm.  Profiles are placed on top of each other only in the outside width, colour marking on colour marking.

Dovetail Plates
How to support Duofor® Dovetail Plates in cement works? Axis of 1100 mm or larger need a support beam under the plates for curing.
For safety reasons: a paving screed must be laid with laying the plates

Dovetail Plates
Combifor floor system
How to cut Duofor® Dovetail Plates? A commercial angle grinder can be used for cutting Dovetail Plates

Dovetail Plates
Can cement screed be used? Yes, Duofor floors can be used both with concrete and cement screed (quality class at least C20).

Dovetail Plates
DTS-G Impact sound insulation
Combifor floor system
Recanor - Impact sound insulation
How long does the cement have to dry? The floor can be entered cautiously after 3 days. The floor has about 80% of its final strength after one week.
Rule of thumb: One week per cm cement layer.

Dovetail Plates
DTS-G Impact sound insulation
Combifor floor system
Recanor - Impact sound insulation
How to get watertight edge seals? The edge connection is sealed with commercially available sealing strips impermeable to water in the corner area. The sealing strips are glued horizontally and vertically to the floor and the wall.

Dovetail Plates