Imperial & Metric Net
3/4" x 5-1/2" (19 mm x 140 mm)
THERMOStart your projectGet a quoteBUILDERS FIRSTSOURCE · ISSAQUAHGet a local Maximo consultation
Thermo Ayous · Maximo 2026 Collection
1x6Fluted #5.
Thermo Ayous 1x6 Fluted #5 is a cataloged Thermo Ayous profile modified with heat and steam. Thermal modification lowers moisture uptake and improves dimensional stability compared with untreated lumber. Maximo lists a 20-year warranty; confirm current terms and approved applications for the selected product.
REAL PROJECT · COLLECTION INSPIRATIONThermo AyousSee the catalog below for the exact profile.
3/4" xNet Finished Size
ConfirmCoverage from project layout
ProjectSpecific waste allowance
20 YearMaximo warranty
Milling Details
Fluted #5 face as cataloged by Maximo
Installation Protocol
For Ayous siding, Maximo allows stainless steel nails installed with a nail gun, concealed in the profile grooves. Confirm the exact SKU and fastening schedule before installation. · Maximo recommends pre-drilling for all fasteners; confirm the bit, fastener and edge distance for the selected profile
Catalog Applications
Siding & Cladding · Ceilings & Soffits
From the Maximo project library
From the board to the whole space.
A ceiling worth looking up to
Wood-lined planes frame the room and its central chandelier.
The outdoor room, finished overhead
The ceiling carries the warmth of wood through the outdoor entertaining area.
From the kitchen to the garden
An indoor-outdoor view shows the ceiling, trim and garden connection together.
Real projects, not exact-profile samples. Confirm the species, application and finish for your project.
Profile & surface planning
Milled for repeatable lines &
project-ready details.
A rhythmic fluted surface that adds texture while keeping Ayous light and workable. High-temperature thermal modification reduces the board’s moisture response compared with the same species untreated.
Finish & Maintenance Recommendations:
Choose a compatible exterior finish when color retention is desired, and confirm factory-prefinish options with the dealer. If left unfinished, the surface will gradually weather toward silver gray; timing and uniformity vary with exposure and detailing.
Lower moisture uptake helps reduce seasonal movement across board joints.
No added synthetic wood preservatives in the thermal process.
Reduced movement supports more predictable joints when the profile is installed correctly.
Available by consultation through Builders FirstSource Issaquah.
The installation detail
Thermo Ayous.
Details that matter.
Beautiful surfaces start with the right board, the right joint and the right support. Here is how this profile fits into the plan.
Your profile
1x6
Fluted #5
CATALOG CROSS-SECTION
Joint relationship. Enlarged for clarity, not to scale. Joint spacing is illustrative. Use the approved detail for installation.
The joint is in the profile.
The catalog drawing shows the machined tongue and groove. Confirm the current cross-section, coverage and orientation for the selected SKU.
Concealed nails. An Ayous option.
For Ayous siding, Maximo allows stainless steel nails installed with a nail gun, concealed in the profile grooves. Confirm the exact SKU and fastening schedule before installation.
A wall that can dry.
For siding, Maximo calls for furring secured to studs and ventilation behind the boards. Coordinate the drainage path, openings and clearances with the wall design.
Side-by-Side Comparisons
Compare Thermo Ayous 1x6 Fluted #5
against traditional Pacific Northwest woods.
Fine, generally straight grain with a pale, quiet appearance.
Straight vertical grain selected for a consistent, premium visual rhythm.
Warm color variation, recognizable grain and a strong regional design tradition.
Strong contrast between earlywood and latewood with a distinctly regional character.
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.
YOUR SELECTIONThermo Ayous 1x6 Fluted #5
Model FAQs
Thermo Ayous 1x6 Fluted #5
project questions
What net size does the Maximo catalog list for Thermo Ayous 1x6 Fluted #5?+
The 2026 catalog lists 3/4" x 5-1/2" (19 mm x 140 mm nominal metric equivalent). Confirm current production tolerances and available lengths when ordering.
What is the recommended fastener for Thermo Ayous 1x6 Fluted #5?+
For Ayous siding, Maximo allows stainless steel nails installed with a nail gun, concealed in the profile grooves. Confirm the exact SKU and fastening schedule before installation. Confirm preparation, fastener size and penetration with Maximo. For ceilings and soffits, request a separate overhead support and fastening schedule.
How much waste should I calculate when ordering Thermo Ayous 1x6 Fluted #5?+
Waste depends on available lengths, wall or deck geometry, joint layout, appearance matching and field cuts. Ask the Issaquah team to review the takeoff before ordering.
Product documents & submittals