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Architectural Cladding · Division 07 46 23 · Issaquah project guide

Thermo Clear Radiatafor Siding & Cladding.

Thermo Clear Radiata is selected for a clear architectural face and uniform grain. The cataloged 1x6 Nickel Gap / Square Back profile creates a clean linear expression; confirm current availability, pricing and lead time with BFS Issaquah.

Vertical timber cladding and projecting fins beside a covered walkway
REAL PROJECT · COLLECTION INSPIRATIONThermo Clear RadiataConfirm the exact profile for Siding & Cladding.
500Janka Hardness
27.0Dry Density
Verify ProductDurability Rating
20 YearMaximo Warranty
RECOMMENDED SPANS

Support Spacing

Use furring at least 3/4 inch thick and no more than 24 inches on center; confirm final spacing for the profile.

FASTENING PROTOCOL

Hardware & Nails

Exterior-grade stainless steel screws selected for the profile and substrate; pre-drill as directed.

SUBSTRUCTURE & CAVITY

Sub-framing Details

A drained wall assembly with coordinated flashings and a ventilated space behind the siding.

VENTILATION & DRYING

Air Cavity Specs

Keep drainage and airflow continuous and protect openings from insects without blocking ventilation.

From the Maximo project library

Explore the collection in real spaces.

Find your profile ↗
01 / 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.

02 / Maximo project inspiration

The grain, up close

Board detail from the Clear Radiata album; not a drawing or sample of a specific catalog profile.

03 / Maximo project inspiration

Dark tone. Visible texture.

Light reveals the texture even within a dark material palette.

Maximo project inspiration · 1 / 3
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.

Material & assembly planning

Key advantages &
installation rules.

Clear Architectural Face

Selected clear material creates a quiet surface with minimal visual interruption.

Crisp Nickel Gap

The cataloged profile creates defined horizontal or vertical shadow lines.

Assembly Guidelines for Siding & Cladding:

  1. Install over a drained rainscreen cavity with minimum 3/4" thickness.
  2. Fasten through the face or blind-nail through the tongue according to project wind-load submittals.
STABILITYReduced movement after thermal modification

Reduced tangential movement supports more consistent joints through seasonal changes.

DURABILITYProduct-specific rating

Thermal modification reduces moisture uptake and changes nutrients used by decay fungi; confirm the rating for the selected profile.

PROCESSHeat and steam

Real wood modified without added wood-preservative chemicals.

LOCALBuilders FirstSource

Consultation and order coordination through BFS Issaquah.

Cataloged Profiles

1 Profiles available for
Thermo Clear Radiata siding & cladding.

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.

5210 E Lake Sammamish Pkwy SE
Issaquah, WA 98029
(425) 391-8000
Monday–Friday, 7:00 AM–4:00 PM
Dealer 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 · Siding & Cladding

How does Thermo Clear Radiata compare to Vertical Grain Hemlock?+

Both can provide a quiet, linear appearance. Thermo Clear Radiata adds reduced moisture response through thermal modification and a product-specific warranty; compare exact grade, dimensions, durability documentation, finish and supply.

Product and installation references

Maximo 2026 Product Catalog ↗Installation & Maintenance Guide ↗Installation Guide ↗