Support Spacing
Confirm fastening intervals for board width, orientation, wind exposure and substrate.
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Architectural Trim · Division 06 40 00 · Issaquah project guide
Thermo Clear Radiatafor Trim & Moulding.
Thermo Clear Radiata S4S trim boards (available in 1x8, 1x12, and 2x6) offer the widest clear, knot-free dimensional trim profiles in the Maximo catalog. Ideal for bold architectural roof fascias, window wraps, and crisp transitions.
APPLICATION SYSTEMThermo Clear Radiata · Trim & Moulding
500Janka Hardness
27.0Dry Density
Verify ProductDurability Rating
20 YearMaximo Warranty
Hardware & Nails
Stainless steel finish screws or trim nails
Sub-framing Details
Solid blocking with integrated metal flashing
Air Cavity Specs
Maintain ventilation gap behind wide fascia boards
Material & assembly planning
Key advantages &
installation rules.
Wide 1x12 Option
A cataloged wide profile supports broad fascia and trim expressions with reduced moisture response.
Clear Visual Field
Selected clear material supports minimal architectural details with limited knot interruption.
Assembly Guidelines for Trim & Moulding:
- Back-prime and seal all edges and field cuts.
- Pre-drill near board ends to ensure clean, split-free screw installation.
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
3 Profiles available for
Thermo Clear Radiata trim & moulding.
2x6S4S E4EA substantial clear profile for clean-lined decking and matching architectural trim.Compare profile →
1x8S4S E4EA wide, minimal-knot trim board for contemporary fascia and transitions.Compare profile →
1x12S4S E4EThe widest clear trim profile in the catalog for bold fascia and uninterrupted planes.Compare profile →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
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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 · Trim & Moulding
Why choose 1x12 Thermo Clear Radiata over cedar fascia?+
Thermo Clear Radiata provides a cataloged wide clear profile with reduced moisture response after modification. Compare available cedar grade, actual dimensions, finish requirements, current pricing and lead time before choosing.
Product and installation references