Vertical Grain Hemlock
Fine, generally straight grain with a pale, quiet appearance. Natural durability is limited without protection, and movement follows changing moisture conditions.
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Architectural Material Comparison · Issaquah, WA
Maximo Thermo vs.Hemlock VG.
Familiar machining and a refined look when the grade and moisture are well controlled. In the rainy Puget Sound climate, specifying between traditional Vertical Grain Hemlock and thermally modified wood comes down to predictability: moisture equilibrium, dimensional movement, maintenance frequency, and warranty.
SIDE-BY-SIDEThermally modified profiles vs. Vertical Grain Hemlock
Coating & Care
Exterior service typically depends on careful detailing and a maintained coating system.
Fabrication
Works well but is heavier than lightweight Thermo Ayous and can moderately blunt tooling.
Material side-by-side
Controlled thermal transformation vs.
natural lumber variability.
Traditional Vertical Grain Hemlock remains a familiar Pacific Northwest choice. Its installed performance varies with grade, heartwood and sapwood content, moisture condition, detailing, finish and exposure.
Maximo Thermo provides a defined catalog alternative with reduced moisture response, product-specific durability information and a 20-year limited manufacturer warranty.
Thermal modification reduces equilibrium moisture uptake compared with untreated wood.
Published limited warranty; compare its terms with the exact traditional product being considered.
High-temperature modification reduces natural resins and the risk of hot-weather pitch bleed.
Local order fulfillment and technical guidance in Issaquah, WA.
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Defined profile.
Natural variation.
This visual is illustrative, not a grade sample. Use it to frame the specification conversation: profile, moisture, grain, finish, installation and documented warranty.
MAXIMO THERMO
TRADITIONAL WOOD
MOISTURE RESPONSEPROFILE CONSISTENCYFINISH PLANMAINTENANCE
21 Profile Comparisons
Compare every Maximo model
against Hemlock VG.
Select a catalog profile to compare its dimensions, intended applications and product characteristics with Vertical Grain Hemlock.
Thermo Ash1x6 Plus S4S E4E End MatchA dense thermally modified hardwood with pronounced grain and a deep, architectural tone.Compare vs. Hemlock VG →
Thermo Ash5/4x6 S4S E4E End MatchA substantial end-matched board built for bold surfaces and high-use exterior spaces.Compare vs. Hemlock VG →
Thermo Ash2x4 S4S E4EHardwood strength and dimensional stability in a versatile structural-looking profile.Compare vs. Hemlock VG →
Thermo Ash2x6 S4S E4EA broad, solid profile with strong grain for decking, trim and architectural details.Compare vs. Hemlock VG →
Thermo Ash1x10 S4S E4EA wide hardwood trim board for fascia, frames and refined exterior transitions.Compare vs. Hemlock VG →
Thermo Ayous1x6 S4S E4ELightweight, smooth and evenly toned for clean siding, ceiling and wall installations.Compare vs. Hemlock VG →
Thermo Ayous1x6 V-Joint / Nickel GapA crisp tongue-and-groove profile that creates controlled shadow lines with easy handling.Compare vs. Hemlock VG →
Thermo Ayous1x6 Fluted #5A rhythmic fluted surface that adds texture while keeping Ayous light and workable.Compare vs. Hemlock VG →
Thermo Ayous1x8 S4S E4EA lightweight wide board suited to fascia, trim and modern architectural detailing.Compare vs. Hemlock VG →
Thermo Ayous1x10 S4S E4EA broad, smooth trim board with warm tone and low installed weight.Compare vs. Hemlock VG →
Thermo Ayous2x2 S4S E4EA compact square profile for battens, screens and precise finish work.Compare vs. Hemlock VG →
Thermo Ayous2x4 S4S E4EA stable, lightweight profile for trims, frames and dimensional accents.Compare vs. Hemlock VG →
Thermo Ayous2x6 S4S E4EA wider dimensional profile combining architectural presence with easy machining.Compare vs. Hemlock VG →
Scandinavian Thermo1x6 V-Joint / Nickel GapStraight grain, characteristic knots and a clean Nordic tongue-and-groove expression.Compare vs. Hemlock VG →
Scandinavian Thermo1x6 Fluted #5Textured Nordic softwood with distinctive grain and a contemporary fluted face.Compare vs. Hemlock VG →
Scandinavian Thermo5/4x6 S4S E4EA versatile Nordic profile for clean horizontal or vertical surfaces and decking.Compare vs. Hemlock VG →
Thermo Clear Radiata1x6 Nickel Gap / Square BackA clear, uniform softwood profile designed for minimal knots and precise shadow lines.Compare vs. Hemlock VG →
Thermo Clear Radiata5/4x6 S4S E4ESmooth, consistent decking with thermally enhanced stability and approachable weight.Compare vs. Hemlock VG →
Thermo Clear Radiata2x6 S4S E4EA substantial clear profile for clean-lined decking and matching architectural trim.Compare vs. Hemlock VG →
Thermo Clear Radiata1x8 S4S E4EA wide, minimal-knot trim board for contemporary fascia and transitions.Compare vs. Hemlock VG →
Thermo Clear Radiata1x12 S4S E4EThe widest clear trim profile in the catalog for bold fascia and uninterrupted planes.Compare vs. Hemlock VG →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.
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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.
YOUR SELECTIONMaximo ThermoCompared with Vertical Grain Hemlock
Comparison FAQs
Maximo Thermo vs.
Hemlock VG
How does Maximo Thermo compare to Vertical Grain Hemlock for siding and soffits in Issaquah?+
Thermal modification lowers moisture uptake compared with untreated Hemlock VG. That can reduce seasonal movement, but joint performance and coating life still depend on profile selection, drainage, ventilation, fastening and maintenance.
Is Vertical Grain Hemlock naturally rot-resistant compared to thermally modified wood?+
Vertical Grain Hemlock performance depends on grade, heartwood and sapwood content, moisture condition, detailing and exposure. Maximo products use heat and steam to reduce moisture response, with durability ratings that vary by the exact species and profile.
What warranty is provided on Maximo Thermo vs. Hemlock VG?+
Warranty coverage for traditional Vertical Grain Hemlock depends on the supplier and product. Maximo publishes a 20-year limited manufacturer warranty; review current terms and approved applications for the selected profile.
Where can I order Maximo Thermo in King County?+
Builders FirstSource Issaquah (5210 E Lake Sammamish Pkwy SE) provides consultation, sample review, and order coordination for all 21 Maximo Thermo profiles.
Technical sources & testing data