Support Spacing
Confirm joist spacing and loading for the selected profile before framing.
THERMOStart your projectBUILDERS FIRSTSOURCE · ISSAQUAHGet a local Maximo consultation
Exterior Decking · Division 06 73 00 · Issaquah project guide
Scandinavian Thermofor Decking.
Scandinavian Thermo 5/4x6 S4S offers a real-wood decking option with reduced moisture response after thermal modification. Confirm the profile’s approved use, support spacing, fastening and finish plan before framing.
APPLICATION SYSTEMScandinavian Thermo · Decking
520Janka Hardness
28.5Dry Density
Verify ProductDurability Rating
20 YearMaximo Warranty
Hardware & Nails
Stainless steel trim-head screws or side-clip systems
Sub-framing Details
Provide a durable, drained substructure and coordinate joist protection with the project design.
Air Cavity Specs
Cross-ventilated sub-deck cavity
Material & assembly planning
Key advantages &
installation rules.
Real-Wood Surface
A smooth natural surface can be inspected, cleaned and refinished as part of the maintenance plan.
Reduced Movement
Lower moisture response can help board gaps remain more predictable when the material is installed correctly.
Assembly Guidelines for Decking:
- Set edge spacing according to the current profile instructions and installation moisture condition.
- Pre-drill all ends before setting fasteners.
Reduced tangential movement supports more consistent joints through seasonal changes.
Thermal modification reduces moisture uptake and changes nutrients used by decay fungi; confirm the rating for the selected profile.
Real wood modified without added wood-preservative chemicals.
Consultation and order coordination through BFS Issaquah.
Cataloged Profiles
1 Profiles available for
Scandinavian Thermo decking.
Where to buy in Issaquah
Builders FirstSource Issaquah
Catalog available by consultation. Contact the Issaquah team to confirm availability, sample kits, and lead time for your selected Maximo profile.
Issaquah, WA 98029
(425) 391-8000
Monday–Friday, 7:00 AM–4:00 PMDealer information verified August 31, 2026. No in-stock claim is made on this site.
Request a local quote
Put this profile
on your project.
Tell us what you are building. Our team will review your wood selection and contact you to coordinate a Maximo consultation with Builders FirstSource Issaquah.
Frequently Asked Questions
Scandinavian Thermo · Decking
Does Scandinavian Thermo decking need to be sealed?+
Applying a penetrating oil with UV inhibitors is recommended if you wish to maintain its honey-brown tone. Unsealed boards weather into a clean silver patina.
Product and installation references