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
Thermo Clear Radiatafor Decking.
Thermo Clear Radiata 5/4x6 and 2x6 S4S decking profiles combine the clean, knot-free look of clear cedar with the dimensional stability and rot resistance of thermal modification.
APPLICATION SYSTEMThermo Clear Radiata · Decking
500Janka Hardness
27.0Dry Density
Verify ProductDurability Rating
20 YearMaximo Warranty
Hardware & Nails
Stainless steel trim-head deck screws or hidden 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 framing
Material & assembly planning
Key advantages &
installation rules.
Clear Real-Wood Surface
A smooth, clear face provides a refined deck appearance and still requires routine inspection and care.
Substantial 2x6 Profile Option
2x6 nominal size available for heavy architectural deck perimeter bands and stairs.
Assembly Guidelines for Decking:
- Set board spacing according to the current profile instructions and installation moisture condition.
- Seal all cut ends with end-grain wax sealer.
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
2 Profiles available for
Thermo Clear Radiata decking.
2x6S4S E4EWhere 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
Thermo Clear Radiata · Decking
Is Thermo Clear Radiata decking slippery when wet?+
Wet traction depends on profile texture, finish, surface growth and maintenance. Request applicable test data when a slip-resistance value is required and keep the surface clean.
Product and installation references