Thermally Modified Decking .

Warm Ayous boards following a faceted ceiling above a shaded chandelier and white curtains

02 / APPLICATION

Ceilings

Bring warmth to the space overhead.

Pale wood-lined soffit above a wide waterfront veranda with white columns

03 / APPLICATION

Soffits

Carry the architecture beyond the walls.

Vertical fluted wood wall behind a green sofa, artwork and indoor plants

04 / APPLICATION

Walls

Create texture, depth and a focal point.

Horizontal wood privacy screen enclosing a landscaped garden seating area

05 / APPLICATION

Fences & screens

Create privacy with natural character.

Scandinavian Thermo5/4x6 S4S E4EA versatile Nordic profile for clean horizontal or vertical surfaces and decking.View application details →

7Catalog profiles

Class 1 or 2Product-dependent durability

20 YearLimited Maximo warranty · Subject to terms

Heat + SteamNo chemicals added during thermal modification

SUBSTRUCTURE & SPAN

Sub-framing layout

Confirm joist spacing and loading for the selected profile before framing; coordinate joist protection with the project design.

VENTILATION CAVITY

Airflow & drying plane

Provide open drainage and airflow below and around the deck, with clearances appropriate to the site.

FASTENING PROTOCOL

Corrosion resistance

Use an approved exterior stainless steel fastening system and pre-drill as directed.

WATER MANAGEMENT

Moisture defense

Set board spacing from the current profile instructions and provide positive drainage below the deck.

From the Maximo project library

Look closer. The details make the space.

Find your profile ↗

Grooved wood deck beside a glazed coastal home and glass balustrade — 02 / Maximo project inspiration
A continuous line to the horizon
A real project from the Clear Radiata album. The photograph does not establish a finish or weathering timeline.

Real projects, not exact-profile samples. Confirm the species, application and finish for your project.

Pacific Northwest project planning

Detail for drainage,
drying & seasonal change.

Lower moisture response can make board movement more predictable through seasonal changes. Surface temperature, growth and traction still depend on color, exposure, drainage, cleaning and finish.

Thermal modification reduces moisture uptake and seasonal movement compared with the same species untreated. Tight joints, secure fasteners and finish life still depend on acclimation, correct installation, drainage and maintenance.

Open installation guide

LOWERMoisture expansion

Thermal modification reduces dimensional movement; compare product-specific data for the selected materials.

HEAT + STEAMHeat-and-steam process

Modified with heat and steam, without added wood-preservative chemicals or plastic resins.

PREFINISHConfirm current options

Ask BFS Issaquah about available colors, coverage, samples and field touch-up requirements.

DOCUMENTEDProduct-specific review

Use current catalog, warranty and installation documents for the exact profile.

Cataloged Maximo profiles

7 Profiles engineered for
decking.

Select a specific model to inspect dimensions, species characteristics, and compare side-by-side with traditional Pacific Northwest woods.

Nordic · Scandinavian Thermo

Request a quote for this collection’s profile, lengths and finish.

Heritage · Thermo Ash

Request a quote for this collection’s profile, lengths and finish.

Thermo Ash1x6 Plus S4S E4E End MatchA dense thermally modified hardwood with pronounced grain and a deep, architectural tone.View application details →

Thermo Ash5/4x6 S4S E4E End MatchA substantial end-matched board built for bold surfaces and high-use exterior spaces.View application details →

Thermo Ash2x4 S4S E4EHardwood strength and dimensional stability in a versatile structural-looking profile.View application details →

Thermo Ash2x6 S4S E4EA broad, solid profile with strong grain for decking, trim and architectural details.View application details →

Cozy · Thermo Clear Radiata

Request a quote for this collection’s profile, lengths and finish.

Thermo Clear Radiata5/4x6 S4S E4ESmooth, consistent decking with thermally enhanced stability and approachable weight.View application details →

Thermo Clear Radiata2x6 S4S E4EA substantial clear profile for clean-lined decking and matching architectural trim.View application details →

Side-by-side comparisons

Compare with traditional lumber
for decking.

Fine, generally straight grain with a pale, quiet appearance.

Vertical Grain Hemlock vs. Thermo Decking

Familiar machining and a refined look when the grade and moisture are well controlled. Compare maintenance, moisture uptake, and warranty in Issaquah.

Straight vertical grain selected for a consistent, premium visual rhythm.

Vertical Grain Cedar vs. Thermo Decking

Naturally durable heartwood and a long architectural track record in the Pacific Northwest. Compare maintenance, moisture uptake, and warranty in Issaquah.

Warm color variation, recognizable grain and a strong regional design tradition.

Western Red Cedar vs. Thermo Decking

Naturally durable heartwood, low density and established exterior applications. Compare maintenance, moisture uptake, and warranty in Issaquah.

Strong contrast between earlywood and latewood with a distinctly regional character.

Douglas Fir vs. Thermo Decking

High structural strength, broad familiarity and availability across common construction grades. Compare maintenance, moisture uptake, and warranty in Issaquah.