Class D fire-rated profiles
Show productsAt Carpentier, we offer a wide range of closed joint cladding that complies with Class D reaction to fire standards. If required, we can apply a fire-retardant treatment to these profiles so that they meet Class B reaction to fire standards.
Class D cladding
Until recently, architects, entrepreneurs and property developers could rely on the Certified Without Further Testing (CWFT) table for Class D timber cladding. All wood profiles meeting the criteria of the CWFT table (closed joint façade systems, minimum thickness of 18 mm and a density of at least 390 kg/m³) could be used as cladding without tests or a classification report. However, the European Commission clarified their position, stipulating that the CWFT table only applies to "untreated" wood. This is to eliminate any risk of misinterpretation, which regularly occurred in practice.
Our HOTwood cladding falls under the category of “treated” wood. In accordance with the new regulations, which came into effect on August 20, 2024, it has to be tested to determine whether it meets Class D reaction to fire standards. So, for “treated” wood, you can no longer use the CWFT table as a guide.
Class D reaction to fire guaranteed by reports
Our HOTwood wood profiles that meet the new conditions have undergone the necessary tests. So not only can we guarantee that these cladding profiles are indeed Class D reaction to fire. Our profiles are, therefore, a safe and reliable choice for a variety of construction projects. The reaction to fire classification reports are available online and can be easily downloaded using your personal login.
Improving the reaction to fire class using autoclave
Does your project require cladding that meets Class B reaction to fire standards? No problem! Our Class D cladding can undergo fire-retardant treatment to achieve a Class B reaction to fire rating. This treatment is carried out under vacuum conditions in an autoclave, using an environmentally-friendly fire-retardant product. After treatment, we can finish the cladding with a colour or give it a pre-weathered look, designed to match your project.
Furthermore, did you know that our range also includes Class B reaction to fire cladding profiles that do not need fire-retardant treatment?
Discover our Class D cladding
HOTwood ash Closed line
SV2
Product specifications
Profile: 20 x 52 (coverage width 45) x 1500mm or more
OR: 20 x 72 (coverage width 65) x 1500mm or more
Closed profile
Meets D-s2,d0 reaction to fire standards, without a fire-retardant treatment
Our most popular finishes: brushed and black
Please note: allow for spacing of at least 2mm, since HOTwood may expand slightly in humid conditions.
HOTwood ash Double rhombus
DSB1
Product specifications
Profile: 20 x 155 (coverage width 146) x 1500mm or more
Closed profile
Meets D-s2,d0 reaction to fire standards, without a fire-retardant treatment
Our most popular finishes: brushed and black
Please note: allow for spacing of at least 2mm, since HOTwood may expand slightly in humid conditions.
Be inspired by our projects:
HOTwood ash Plus line closed
SV+
Product specifications
Profile: 18 x 65 (coverage width 52,5) | 100 (coverage width 87,5) | 137 (coverage width 124,5) | 155 (coverage width 142,5) x 1850 mm
Closed profile with fixed widths in variable pattern
Fitted with tongue and groove
Meets D-s2,d0 reaction to fire standards, without a fire-retardant treatment
Available only on request - minimum 500 m/width
Downloads
HOTwood ash Shiplap QC
S3QC
Product specifications
QuickClip® profile: 20 x 150 (coverage width 142) x 1500mm or more
Fitted with grooves
Including the Grad® installation system, consisting of aluminium joists (12 x 55mm)
with pre-mounted clips for placement at 60cm intervals
(1.9m joist per m²)
Meets D-s2,d0 reaction to fire standards, without a fire-retardant treatment
For vertical installation: for stable and circular installation, we strongly recommend you use Grad® clip grips. This extremely handy tool enables you to lock the cladding boards on the aluminium rail and prevents any slipping due to gravity. One clip grip per groove is enough for each board.
Our most popular finishes: brushed and black
HOTwood ash T&G Plank
PLAN
Product specifications
Profile: 20 x 132mm (coverage width 123mm)
With tongue and groove, also on the edges
Meets D-s2,d0 reaction to fire standards, without a fire-retardant treatment
Lengths (mixed selection only):
- 35%: 900 to 1500mm;
- 65%: 1800 to 3000mm.
Our most popular finishes: brushed and black
Please note: always install with the flaw-free 'A' surface facing upwards (see diagram) and allow for at least 2mm expansion at the tongue and groove joint. HOTwood may expand slightly in humid conditions.
HOTwood Clear pine Jump line - brushed
SV4
Product specifications
Combination of four profiles: 20 x 65 (coverage width 46) | 20 x 115 (coverage width 96) | 20 x 138 (coverage width 119) | 26 x 65 (coverage width 46) x 3000 mm or more, including 2 x the 26 x 65 mm profile for each set
Fitted with tongue and groove
Varying widths and thicknesses give a dynamic play of lines
Brushed finish - optional: oil finish*
Meets D-s2,d0 reaction to fire standards, without a fire-retardant treatment
Also comes in a flat version based on the three profiles with a thickness of 20 mm
*For the very best protection, we recommend applying a finish with a UV-resistant oil or paint before installation. This finish will need to be reapplied regularly before it wears off. If you leave your Clear Pine cladding uncoated, dust and other airborne particles are more likely to adhere to the porous surface of the natural wood. For the reaction to fire class you require, we can offer certified colour finishes from the Tikkurila, Teknoshield and Remmers brands.
Please note:
- Allow for at least a 3 mm gap at the tongue and groove joint, since HOTwood may expand slightly in humid conditions
- Use hidden nailing in the tongue and face nailing in the plank.
HOTwood clear pine Shiplap QC
S3QC
Product specifications
QuickClip® profile: 20 × 138 (coverage width 131) x 3000 mm or more
Fitted with grooves on underside
Including the Grad® installation system, consisting of aluminium joists (12 x 55 mm)
with pre-mounted clips for placement at 60 cm intervals
(1.9 m joist per m²)
Vertical installation is advised
Meets D-s2,d0 reaction to fire standards, without a fire-retardant treatment
For vertical cladding: for stable and circular installation, we strongly recommend you use Grad® clip grips. This extremely handy tool enables you to lock the cladding boards on the aluminium rail and prevents any slipping due to gravity. One clip grip per groove is enough for each board.
For the very best protection, we recommend applying a finish with a UV-resistant oil or paint before installation. This finish will need to be reapplied regularly before it wears off. If you leave your Clear Pine cladding uncoated, dust and other airborne particles are more likely to adhere to the porous surface of the natural wood.
Our most popular finish: natural look; for the reaction to fire class you require, we can offer certified colour finishes from the Tikkurila, Teknoshield and Remmers brands.
HOTwood clear pine T&G Plank
CP1
Product specifications
Profile: 20 x 138 (coverage width 134) x 3000mm or more
Fitted with tongue and groove
Meets D-s2,d0 reaction to fire standards, without a fire-retardant treatment
For the very best protection, we recommend applying a finish with a UV-resistant oil or paint before installation. This finish will need to be reapplied regularly before it wears off. If you leave your Clear Pine cladding uncoated, dust and other airborne particles are more likely to adhere to the porous surface of the natural wood.
Our most popular finish: natural look; for the reaction to fire class you require, we can offer certified colour finishes from the Tikkurila, Teknoshield and Remmers brands.
Please note:
- Only for the underside of canopies and eaves (more protected from the weather)
- Allow for at least a 3mm gap at the tongue and groove joint, since HOTwood may expand slightly in humid conditions
- Use hidden nailing in the tongue and face nailing in the plank.
Downloads
HOTwood clear pine T&G plank
CP5
Product specifications
Profile: 20 x 138 (coverage width 119) x 3600mm or more
Tongue and groove joints
Brushed
Meets D-s2,d0 reaction to fire standards, without a fire-retardant treatment
Available from stock in natural look and Bison Brown or Saddle Black oil finish. The fire classification D-s2,d0 without fire-retardant treatment applies to the natural look only.
Do you need to meet a reaction to fire standard? We can offer certified colour finishes from the Tikkurila, Teknoshield and Remmers brands.
For the very best protection, we recommend applying a finish with a UV-resistant oil or paint before installation. This finish will need to be reapplied regularly before it wears off. If you leave your Clear Pine cladding uncoated, dust and other airborne particles are more likely to adhere to the porous surface of the natural wood.
Please note:
- Only for the underside of canopies and eaves (more protected from the weather)
- Allow for at least a 3mm gap at the tongue and groove joint, since HOTwood may expand slightly in humid conditions
- Use hidden nailing in the tongue and face nailing in the plank.
HOTwood pine Ignite T&G Plank - charred look
PLAN
Product specifications
Profile: 20 x 140 (coverage width 132) x 2700mm or more
Fitted with tongue and groove
Extremely durable
The charred look is a perfect imitation of the characteristic dragon-scale pattern of charred wood: deep black, embossed and brushed
Easy maintenance: apply a fresh coat of water-based black paint (Tikkurila Ultra Matt) every five to seven years
Good to know: the charred finish will retain its beauty forever
Meets D-s2,d0 reaction to fire standards, without a fire-retardant treatment
An economical alternative for charred wood
For interior and exterior use
Please note: allow for at least 2mm expansion at the tongue and groove joint, since HOTwood may expand slightly in humid conditions.
HOTwood pine Jump line - brushed black finish
SV4
Product specifications
Combination of four profiles: 20 x 90 (coverage width 71) | 26 x 68 (coverage width 49) | 20 x 115 (coverage width 96|20 x 68 (coverage width 49) | 26 x 68 (coverage width 49) x 3000mm or more
Fitted with tongue and groove
Varying widths and thicknesses give a dynamic play of lines
Brushed black finish (standard 7-year finish warranty) - Sand finish also available
Perfect for blind nailing
Meets D-s2,d0 reaction to fire standards, without a fire-retardant treatment
Also comes in a flat version based on the three profiles with a thickness of 20mm
Please note: allow for at least 2mm expansion at the tongue and groove joint, since HOTwood may expand slightly in humid conditions.
HOTwood pine T&G Plank
N1
Product specifications
Profile: 20 x 140 (coverage width 132) x 2700mm or more
Fitted with tongue & groove
Meets D-s2,d0 reaction to fire standards, without a fire-retardant treatment
Our most popular finishes: brushed and black
Please note: allow for at least 2mm expansion at the tongue and groove joint, since HOTwood may expand slightly in humid conditions.
Cheaper alternative available in 17 mm thickness
HOTwood pine T&G Plank Plus line - Brushed black
N1 SV+
Product specifications
Profile: 20 x 68 (coverage width 60) | 115 (coverage width 107) | 140 (coverage width 132) x 3000mm or more
Widths available separately or in combination
Closed profile
Fitted with tongue & groove
Brushed black finish (standard 7-year finish warranty)
Meets D-s2,d0 reaction to fire standards, without a fire-retardant treatment
Please note: allow for at least 2mm expansion at the tongue and groove joint, since HOTwood may expand slightly in humid conditions.
HOTwood pine Triple
TRIP
Product specifications
Profile: 20 x 140 (coverage width 134) x 1800mm or more
Closed profile
Meets D-s2,d0 reaction to fire standards, without a fire-retardant treatment
Our most popular finishes: brushed and black
Please note: allow for spacing of at least 2mm, since HOTwood may expand slightly in humid conditions.
