Thermowood

Millworks source Thermowood from carefully selected Redwood, by leading Finnish sawmills. Thermal modification enhances the wood’s natural attributes resulting in a timber that boast impressive stability and improved durability.

  • Grade: Millworks C

  • Certification: PEFC™

  • Applications: External Cladding, Interior Cladding, Decking, Fencing

  • Widths: 43mm, 68mm, 93mm, 118mm, 143mm (193mm trim upon request)

  • Durability: BS EN 350-2 Class 2

  • Density: 420kg / m³

Benefits of Thermowood

Thermowood Grading

Millworks Grade C

Millworks C Grade timber is rich in character, featuring a higher concentration of knots that contribute to a classic, rustic appearance. This grade is both aesthetically appealing and highly practical for a variety of projects. 

Characterful aesthetic: The abundance of knots enhances the timber’s unique charm, making it a desirable and a popular choice. 

Practical versatility: This grade is ideal for a wide range of applications, striking a balance between visual appeal and functionality. Modified timber is exceptionally suited for coatings making it versatile for various design preferences. 

Integral knots: Knots are unlimited in this grade and are essential to certain species, grades, and processes, such as thermal modification, adding to the timber’s performance. 

Millworks C Grade timber is ideal for a variety of uses, including cladding, decking, and interior finishes, where a blend of character, practicality, and suitability for coatings is essential. 

Thermowood Applications

In addition to our standard planed finish, surface texture can be added to create accentuated depth to the timber grain. Surface textures are recommended when coatings are applied to improve performance and enable enhanced adhesion and longevity.

  • Compatible with FineSawn, Milltex®, Brushed, and Mokuzai®

Factory Coatings

In the correct conditions, Thermowood will weather to a silver-grey, if left untreated. Although naturally durable, Thermowood can be finished for protection against the elements. Millworks offers a range of factory coatings that serve both decorative and protective purposes, producing consistent results with a range of aesthetic options to suit your project.

  • Compatible with MillCoat® and OrganoWood®.

FRX fire retardant can be pressure-impregnated into Thermowood under ISO-controlled conditions to meet national Building Regulations for Euroclass B or C compliance.

Installation

Specifying the correct fixings is critical to the performance of timber cladding. Specifically manufactured  systems compatible with Millworks timber cladding and decking profiles, designed to ensure optimal performance of the timber and factory coatings. 

  • Compatible with MillFix®.

Thermowood Profiles

Millworks MW1 profile drawing.

MW1

Vertical or Horizontal
Available in 68 / 93 / 118 / 143mm widths
Linear metres per m2 - 20.83 / 13.70 / 10.20 / 8.13 (installed with 4mm movement gap)
Face fix
Millworks MW2 profile drawing.

MW2

Vertical or Horizontal
Available in 68 / 93 / 118 / 143mm
Linear metres per m2 - 21.74 / 14.08 / 10.42 / 8.26 (installed with 4mm movement gap)
Secret fix
Millworks mixed width MW2 profile drawing.

MW2 Mix

Vertical or Horizontal
Mixed 68 / 93 / 143mm widths
Linear metres per m2 - 7.25 of each width (installed with 4mm movement gap)
Secret fix
Millworks MW5 profile drawing.

MW5

Vertical or Horizontal
Available in 68 / 93 / 118 / 143mm widths
Linear metres per m2 - 21.74 / 14.08 / 10.42 / 8.26 (installed with 4mm movement gap)
Secret fix
Millworks MW6 profile drawing.

MW6

Vertical, Horizontal or Diagonal
Available 68 / 93 / 118 / 143mm widths. (193mm trim only)
Linear metres per m2 - 19.61 / 13.16 / 9.90 / 6.62 (installed with 8mm movement gap)
Face fix
Millworks mixed MW6 profile drawing.

MW6 Mix

Vertical, Horizontal or Diagonal
Mixed 68 / 93 /143mm widths
Linear metres per m2 - 3.05 of each width (installed with 8mm movement gap)
Face fix
Millworks MW7 profile drawing.

MW7

Horizontal
Available in 68 / 93 / 118 / 143mm widths
Linear metres per m2 - 13.16 / 9.90 / 7.94 / 6.62 (installed with 8mm movement gap)
Face fix
Millworks MW10 featheredge profile drawing.

MW10

Horizontal
Available in 150mm width. (200mm upon request)
Linear metres per m2 - 8
Face fix
Millworks MW11 rebated featheredge profile drawing.

MW11

Horizontal
Available in 143mm width
Linear metres per m2 - 7.75 (installed with 4mm movement gap)
FineSawn face
Face fix
Millworks triple shadow profile drawing.

Triple Shadow

Vertical or Horizontal
Available in 140mm width
Linear metres per m2 - 7.75 (installed with 4mm movement gap)
Face fix
Millworks trim profile drawings.

Trim

Corner detailing
Post available in 43 x 43mm
L-trim available in 43 x 43mm
Millworks decking profile drawing.

Decking

Smooth or grooved
Available in 93 / 143mm widths
Linear metres per m2 - 9.90 / 6.62 (installed with 8mm movement gap)
Thickness 20mm (26mm option for 143mm only)
Face fix