{"id":2249,"date":"2026-08-03T04:23:10","date_gmt":"2026-08-03T04:23:10","guid":{"rendered":"https:\/\/hachillspa.com\/?p=2249"},"modified":"2026-08-04T08:17:00","modified_gmt":"2026-08-04T08:17:00","slug":"thermowood-cladding-and-stainless-liners-explained","status":"publish","type":"post","link":"https:\/\/hachillspa.com\/fr\/blog\/thermowood-cladding-and-stainless-liners-explained\/","title":{"rendered":"Bardage en Thermowood et cuves en inox expliqu\u00e9s"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2249\" class=\"elementor elementor-2249 elementor-bc-flex-widget\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-hcblogroot e-con-full hc-blog-shell-18 e-flex e-con e-parent\" data-id=\"hcblogroot\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-hcbloghtml elementor-widget elementor-widget-html\" data-id=\"hcbloghtml\" 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14px 12px 42px;margin:10px 0;background:#f8f8f7;border-radius:4px}.hc-draft-2249 .hc-checklist li:before{content:'\\2713';position:absolute;left:16px;color:var(--wood);font-weight:800}\n.hc-draft-2249 .hc-rfq{padding:28px;background:#302e2d;color:#fff;border-radius:6px;margin:28px 0}.hc-draft-2249 .hc-rfq h2,.hc-draft-2249 .hc-rfq p,.hc-draft-2249 .hc-rfq li{color:#fff}.hc-draft-2249 .hc-rfq ul{columns:2;column-gap:36px}\n.hc-draft-2249 .hc-faq details{border-top:1px solid var(--line);padding:16px 0}.hc-draft-2249 .hc-faq details:last-child{border-bottom:1px solid var(--line)}.hc-draft-2249 .hc-faq summary{cursor:pointer;font-weight:700}.hc-draft-2249 .hc-faq details p{margin:12px 0 0}\n.hc-draft-2249 .hc-cta{padding:30px;background:var(--warm);border-radius:6px;margin-top:36px}.hc-draft-2249 .hc-button{display:inline-flex;padding:11px 18px;background:#302e2d;color:#fff;text-decoration:none;border-radius:4px;font-weight:700}\n@media(max-width:767px){body.single-post .related-article{display:none!important}.hc-draft-2249{padding:24px 16px 56px;font-size:16px}.hc-draft-2249 h2{font-size:28px}.hc-draft-2249 h3{font-size:20px}.hc-draft-2249 .hc-answer{padding:22px 18px}.hc-draft-2249 .hc-answer p{font-size:18px}.hc-draft-2249 .hc-facts,.hc-draft-2249 .hc-links{grid-template-columns:1fr}.hc-draft-2249 .hc-toc ol,.hc-draft-2249 .hc-rfq ul{columns:1}}\n<\/style>\n<article id=\"hc-article-2249\" class=\"hc-draft-2249\" aria-label=\"Thermowood Cladding and Stainless Liners Explained\">\n  <div class=\"hc-answer\"><p><strong>Direct answer:<\/strong> Thermowood cladding and a stainless liner perform different jobs in a cold plunge. The liner contains treated water and must be specified for alloy, fabrication, weld finish and water chemistry. The external wood provides appearance and enclosure, but it still needs drainage, drying, secure attachment and maintenance. Buyers should inspect the rim, base, access panels, fasteners and concealed wetting paths where the two systems meet.<\/p><\/div>\n  <p>A product can look like a wooden ice bath while its operating durability depends mainly on hidden interfaces. The useful specification separates every layer and identifies how it can be inspected, cleaned and repaired.<\/p>\n  <aside class=\"hc-scope\"><p><strong>Page scope:<\/strong> This page owns the interface between thermowood cladding and stainless liners. Broad thermowood selection belongs to the pillar; 304-versus-316 comparison belongs to its dedicated material page.<\/p><\/aside>\n  <div class=\"hc-facts\"><div class=\"hc-fact\"><span>Liner duty<\/span><strong>Contains water and carries sanitation exposure.<\/strong><\/div><div class=\"hc-fact\"><span>Cladding duty<\/span><strong>Provides finish and protects the enclosure, not necessarily the water vessel.<\/strong><\/div><div class=\"hc-fact\"><span>Critical interface<\/span><strong>Rim, panel joints and base must shed water and remain serviceable.<\/strong><\/div><div class=\"hc-fact\"><span>Evidence<\/span><strong>Request order-specific materials and section details.<\/strong><\/div><\/div>\n  <nav class=\"hc-toc\" aria-label=\"Article contents\"><strong>On this page<\/strong><ol><li><a href=\"#hc-2249-section-1\">Separate the functions before comparing products<\/a><\/li><li><a href=\"#hc-2249-section-2\">Review the liner as a fabricated water vessel<\/a><\/li><li><a href=\"#hc-2249-section-3\">Review cladding joints, fasteners and the base<\/a><\/li><li><a href=\"#hc-2249-section-4\">Control water chemistry and cleaning compatibility<\/a><\/li><li><a href=\"#hc-2249-section-5\">Use receiving and maintenance evidence<\/a><\/li><li><a href=\"#hc-2249-evidence\">Evidence, responsibilities and release gates<\/a><\/li><li><a href=\"#hc-2249-table-1\">Cladding and liner interface review<\/a><\/li><li><a href=\"#hc-2249-table-2\">Material evidence request<\/a><\/li><li><a href=\"#hc-2249-receiving\">Receiving, installation and commissioning checks<\/a><\/li><li><a href=\"#hc-2249-checklist\">Project checklist<\/a><\/li><li><a href=\"#hc-2249-rfq\">RFQ inputs<\/a><\/li><li><a href=\"#hc-2249-faq\">Frequently asked questions<\/a><\/li><\/ol><\/nav>\n  <section class=\"hc-section\" id=\"hc-2249-section-1\"><h2>Separate the functions before comparing products<\/h2><p>Ask for a section drawing that identifies liner, frame, insulation, cladding and service void. Without this, buyers may attribute corrosion resistance to the wood or assume the visible cladding is structural.<\/p><p>The supply record should also show how fittings pass through the liner and enclosure. Connections need support, sealing and access without loading decorative panels.<\/p><figure class=\"hc-article-image\" data-image-status=\"complete\" data-image-slot=\"article-2249-image-01\" data-media-id=\"3175\"><img loading=\"lazy\" src=\"https:\/\/hachillspa.com\/wp-content\/uploads\/2026\/07\/ct26-stainless-rim-and-thermowood-corner.webp\" alt=\"CT26 stainless rim and thermowood corner detail\" title=\"CT26 stainless rim and thermowood corner detail\" width=\"1200\" height=\"1200\" loading=\"lazy\" decoding=\"async\"><figcaption>The liner-to-cladding corner is an interface where finish, drainage and attachment need separate review.<\/figcaption><\/figure><\/section>\n<section class=\"hc-section\" id=\"hc-2249-section-2\"><h2>Review the liner as a fabricated water vessel<\/h2><p>Confirm exact stainless designation, sheet or formed construction, weld treatment, surface finish, drain geometry and fitting materials. Alloy names alone cannot prove workmanship or resistance in the operating water.<\/p><p>Heat-affected zones, unremoved contamination, crevices and poor drainage can localise corrosion. Require appropriate fabrication and cleaning records while keeping claims limited to the ordered model and intended chemistry.<\/p><aside class=\"hc-example\"><h3>Engineering scenario: Rust staining appears beside a fastener<\/h3><p><strong>Observed problem:<\/strong> A brown mark develops on the cladding below a metal fixing while the liner surface looks clean.<\/p><p><strong>Likely cause:<\/strong> The stain may come from an incompatible or contaminated fastener, trapped water or runoff from another metal component.<\/p><p><strong>How to check:<\/strong> Inspect the fixing material, wetting path, nearby metals and surface condition; do not diagnose the liner from colour alone.<\/p><p><strong>Prevention or corrective path:<\/strong> Use approved compatible hardware, clean fabrication practices and details that drain and dry.<\/p><\/aside><\/section>\n<section class=\"hc-section\" id=\"hc-2249-section-3\"><h2>Review cladding joints, fasteners and the base<\/h2><p>Inspect board orientation, end-grain exposure, joint gaps, fastener placement and lower-edge clearance. Horizontal ledges and closed bases can trap splash or cleaning water.<\/p><p>Fasteners and brackets should be compatible with the environment and allow controlled movement. A rigid decorative assembly can split or open when moisture and temperature change.<\/p><figure class=\"hc-article-image\" data-image-status=\"complete\" data-image-slot=\"article-2249-image-02\" data-media-id=\"3143\"><img loading=\"lazy\" src=\"https:\/\/hachillspa.com\/wp-content\/uploads\/2026\/07\/ct20-stainless-cold-plunge-weld-detail.webp\" alt=\"CT20 stainless cold plunge weld detail\" title=\"CT20 stainless cold plunge weld detail\" width=\"1200\" height=\"1200\" loading=\"lazy\" decoding=\"async\"><figcaption>A visible weld detail supports workmanship discussion but cannot prove alloy or hidden fabrication quality by appearance alone.<\/figcaption><\/figure><\/section>\n<section class=\"hc-section\" id=\"hc-2249-section-4\"><h2>Control water chemistry and cleaning compatibility<\/h2><p>The approved water range, sanitizer method and cleaning products must suit the liner, seals, fittings and wood finish. Strong chemicals used to solve one surface problem can damage another component.<\/p><p>Staff should apply liner cleaners without saturating the wood and wood-care products without contaminating the water. Separate tools and procedures help prevent cross-contact.<\/p><aside class=\"hc-example\"><h3>Engineering scenario: Wood darkens beneath the rim<\/h3><p><strong>Observed problem:<\/strong> A continuous dark band develops where splash water collects under the liner lip.<\/p><p><strong>Likely cause:<\/strong> The rim detail retains water and the maintenance routine does not dry the interface.<\/p><p><strong>How to check:<\/strong> Check rim drainage, sealant condition, panel clearance, finish integrity and actual cleaning practice.<\/p><p><strong>Prevention or corrective path:<\/strong> Revise the wetting detail or maintenance procedure and replace damaged components under approved instructions.<\/p><\/aside><\/section>\n<section class=\"hc-section\" id=\"hc-2249-section-5\"><h2>Use receiving and maintenance evidence<\/h2><p>At receiving, check finish variation, panel damage, alignment, accessible fittings and packaging moisture. Photograph any staining or impact before installation.<\/p><p>During operation, investigate persistent wet areas, rust staining, loose boards, open joints and leakage early. Record the observed location and water chemistry rather than treating every mark as the same failure.<\/p><figure class=\"hc-article-image\" data-image-status=\"complete\" data-image-slot=\"article-2249-image-03\" data-media-id=\"3123\"><img loading=\"lazy\" src=\"https:\/\/hachillspa.com\/wp-content\/uploads\/2026\/07\/ct15-stainless-cold-plunge-rim-and-interior.webp\" alt=\"CT15 stainless cold plunge rim and interior detail\" title=\"CT15 stainless cold plunge rim and interior detail\" width=\"1200\" height=\"1200\" loading=\"lazy\" decoding=\"async\"><figcaption>The rim and interior view shows water-contact and wood-adjacent surfaces that require compatible cleaning methods.<\/figcaption><\/figure><\/section>\n  <section class=\"hc-section\" id=\"hc-2249-evidence\"><h2>Evidence, responsibilities and release gates<\/h2><h3>Use an evidence hierarchy<\/h3><p>For thermowood cold plunge cladding, approved order drawings, model-specific technical schedules, manuals and applicable test or compliance records carry more weight than category labels, product photographs or general marketing copy. Every numerical claim should identify its model, configuration, units, test condition and revision. Where evidence is missing, mark it open rather than converting an assumption into a specification.<\/p><h3>Assign every interface<\/h3><p>Within construction and material-system explanation, the project record should name the party responsible for the tub, chiller, circulation, filtration, treatment, drain connection, building drainage, electrical work, ventilation, commissioning, staff training and spares. A supplier statement that equipment is compatible is not the same as a complete installed system design. Compare quotations only after included, excluded and locally supplied items are aligned.<\/p><h3>Use hold points<\/h3><p>The thermowood cold plunge cladding decision record should hold site penetrations until the approved connection drawing is issued, dispatch until the delivery route and packing record are accepted, and opening until leak, flow, control, treatment, drainage and operator checks pass. These gates reduce late changes without pretending that a blog replaces project engineering or local authority review.<\/p><\/section>\n  <section class=\"hc-section\" id=\"hc-2249-decision-record\"><h2>Keep a decision record from shortlist to operation<\/h2><p>For construction and material-system explanation, record the input, source, responsible party, revision and release status for every decision that can change product fit or site work. Separate confirmed facts from qualified planning values and open supplier inputs. This prevents a preliminary drawing, application image or generic category statement from becoming an uncontrolled order requirement.<\/p><p>Carry the thermowood cold plunge cladding record through quotation review, production release, receiving and commissioning. When a model, component, material, utility, layout or operating assumption changes, identify the affected drawing, calculation, procedure and acceptance check. A concise change log is more useful than a large document pack whose revisions cannot be traced.<\/p><\/section>\n  \n  <section class=\"hc-section\" id=\"hc-2249-table-1\"><h2>Cladding and liner interface review<\/h2><div class=\"hc-table-wrap\" role=\"region\" aria-label=\"Cladding and liner interface review\" tabindex=\"0\"><table><caption>Cladding and liner interface review<\/caption><thead><tr><th scope=\"col\">Location<\/th><th scope=\"col\">Inspect<\/th><th scope=\"col\">Failure mechanism<\/th><\/tr><\/thead><tbody><tr><td>Rim<\/td><td>Water shedding and finish<\/td><td>Persistent wetting<\/td><\/tr><tr><td>Panel joint<\/td><td>Gap and attachment<\/td><td>Swelling or trapped debris<\/td><\/tr><tr><td>Fastener<\/td><td>Material and contamination<\/td><td>Staining or galvanic effect<\/td><\/tr><tr><td>Base<\/td><td>Ground clearance and drainage<\/td><td>Standing water<\/td><\/tr><tr><td>Service opening<\/td><td>Seal and access<\/td><td>Hidden leakage<\/td><\/tr><\/tbody><\/table><\/div><\/section>\n  <section class=\"hc-section\" id=\"hc-2249-table-2\"><h2>Material evidence request<\/h2><div class=\"hc-table-wrap\" role=\"region\" aria-label=\"Material evidence request\" tabindex=\"0\"><table><caption>Material evidence request<\/caption><thead><tr><th scope=\"col\">Component<\/th><th scope=\"col\">Record<\/th><th scope=\"col\">Boundary<\/th><\/tr><\/thead><tbody><tr><td>Liner<\/td><td>Material and fabrication schedule<\/td><td>Ordered model only<\/td><\/tr><tr><td>Welds<\/td><td>Finish and inspection method<\/td><td>Declared process<\/td><\/tr><tr><td>Cladding<\/td><td>Wood\/process\/profile<\/td><td>Approved sample range<\/td><\/tr><tr><td>Finish<\/td><td>Product and application system<\/td><td>Exposure-specific<\/td><\/tr><tr><td>Hardware<\/td><td>Material and location<\/td><td>Complete assembly<\/td><\/tr><\/tbody><\/table><\/div><\/section>\n  \n  <section class=\"hc-section\" id=\"hc-2249-receiving\"><h2>Receiving, installation and commissioning checks<\/h2><p>When a candidate for thermowood cold plunge cladding arrives, compare crate condition, model and serial identity, visible damage, loose fittings, included components and document revisions with the approved packing list. Photograph exceptions before unpacking or moving the product. Product imagery in this article supports visual identification only; it does not prove hidden construction, included scope or field performance.<\/p><p>For construction and material-system explanation, the installed system should be checked under approved procedures for level support, water tightness, valve position, priming, flow, filter state, controls, temperature indication, treatment operation, drainage and alarms or interlocks. Record water and ambient conditions for performance observations. Fixed electrical work, structural approval and regulated public-use installation belong to qualified professionals and the authority having jurisdiction.<\/p><\/section>\n  \n  <section class=\"hc-section\" id=\"hc-2249-checklist\"><h2>Project checklist<\/h2><ul class=\"hc-checklist\"><li>Obtain a layered section drawing.<\/li><li>Confirm liner material and weld treatment.<\/li><li>Inspect rim and base drainage.<\/li><li>Approve cladding profile and finish range.<\/li><li>Check hardware compatibility and contamination control.<\/li><li>Separate liner and wood cleaning procedures.<\/li><li>Retain access to concealed fittings.<\/li><\/ul><\/section>\n  <section class=\"hc-rfq\" id=\"hc-2249-rfq\"><h2>Information to include in an RFQ<\/h2><p>Send model-level and site-specific inputs so suppliers can close assumptions before price comparison:<\/p><ul><li>Liner material and finish<\/li><li>Fabrication and weld treatment<\/li><li>Thermowood species\/process\/profile<\/li><li>Finish system and appearance range<\/li><li>Rim and base drainage detail<\/li><li>Fastener and bracket materials<\/li><li>Insulation and service openings<\/li><li>Water chemistry limits<\/li><li>Cleaning compatibility<\/li><li>Indoor\/outdoor exposure<\/li><li>Quantity and documentation<\/li><\/ul><\/section>\n  <section class=\"hc-section\" id=\"hc-2249-interface-control\"><h2>Control the cladding-to-liner interface through production and handover<\/h2><p>Thermowood cladding and a stainless liner perform different jobs. The liner contains water and transfers loads into its support structure; the cladding manages appearance, touch surfaces and weather exposure. The interface between them must allow drainage, drying, inspection and differential movement. A drawing should show how the rim, corners, access panels, insulation, structural frame and service penetrations meet. A product photograph cannot confirm these hidden details.<\/p><p>A common receiving problem is a visually acceptable cabinet with trapped packaging moisture or blocked drainage gaps. The immediate symptom may be staining or a damp odor rather than structural damage. Inspect the underside, panel joints and service compartment before commissioning, document moisture or damage with dated photographs, and keep the unit ventilated while the supplier reviews anything outside the approved condition. Do not seal wet timber behind trim to make the issue disappear.<\/p><p>Stainless liner review must separate the base material from fabrication quality and water chemistry. Confirm the ordered alloy only from controlled material records, then inspect formed corners, weld continuity, heat tint treatment, surface finish and drain geometry. Chloride exposure, incompatible cleaners, stagnant water, metal contamination and poorly treated weld zones can still cause discoloration or localized attack. No stainless grade should be described as maintenance-free or universally corrosion-proof.<\/p><p>The handover pack should identify who approves cleaning products, who records water chemistry, who maintains exterior finishes, who inspects joints and fasteners, and who decides whether a mark is cosmetic, cleanable or evidence of material damage. Record the approved drawing revision, material declaration, receiving photographs, cleaning procedure and any agreed repair. This evidence prevents a later dispute from being reduced to untraceable verbal claims.<\/p><div class=\"hc-example\"><h3>Composite field scenario: staining appears near a service-panel edge<\/h3><p><strong>Observed problem:<\/strong> dark staining develops where exterior water drains toward a removable panel. <strong>Likely cause:<\/strong> repeated wetting, poor drying clearance or an incompatible finish, not automatically defective Thermowood. <strong>How to check:<\/strong> inspect the drainage path, panel gap, fasteners, finish record and moisture condition; compare the affected area with sheltered faces. <strong>Corrective path:<\/strong> remove the water trap, dry the assembly, use only the approved cleaning or refinishing process, and escalate cracking, softness, loose fasteners or liner leakage to the responsible supplier or installer.<\/p><\/div><\/section><section class=\"hc-section hc-faq\" id=\"hc-2249-faq\"><h2>Frequently asked questions<\/h2><details><summary>Is thermowood a cold plunge liner?<\/summary><p>Usually it is external cladding, but construction varies. Request a section drawing and material schedule that identify the water-holding liner, structure, insulation and cladding for the exact model.<\/p><\/details><details><summary>Why do liner welds matter?<\/summary><p>Weld geometry, heat tint removal, finishing and contamination control can affect cleanability and local corrosion behaviour. Ask for the fabrication and inspection basis rather than relying on alloy wording alone.<\/p><\/details><details><summary>Can stainless steel stain the wood?<\/summary><p>Staining can originate from metal runoff, contaminated hardware, trapped water or cleaning residues. Trace the source before concluding that the liner is corroding.<\/p><\/details><details><summary>Should thermowood joints be sealed completely?<\/summary><p>Not automatically. The assembly needs controlled drainage, drying and movement. Follow the approved design and finish system; indiscriminate sealing can trap moisture.<\/p><\/details><details><summary>What cleaning information belongs in the handover?<\/summary><p>Provide approved liner chemicals, wood-finish care, application methods, rinse requirements, prohibited products, inspection points and escalation conditions for the ordered materials.<\/p><\/details><\/section>\n  <section class=\"hc-section\" id=\"hc-2249-links\"><h2>Related HACHILL resources<\/h2><div class=\"hc-links\"><div class=\"hc-link\"><h3><a href=\"https:\/\/hachillspa.com\/products\/cold-plunges\/thermowood\/\">Thermowood cold plunge range<\/a><\/h3><p>Use this verified page for the next material category decision.<\/p><\/div><div class=\"hc-link\"><h3><a href=\"https:\/\/hachillspa.com\/blog\/thermowood-cold-plunge-buying-guide-for-product-and-project-buyers\/\">Thermowood cold plunge buying guide<\/a><\/h3><p>Use this verified page for the next pillar guide decision.<\/p><\/div><div class=\"hc-link\"><h3><a href=\"https:\/\/hachillspa.com\/blog\/how-product-buyers-compare-cold-plunge-tub-materials\/\">cold plunge material comparison<\/a><\/h3><p>Use this verified page for the next material-system comparison decision.<\/p><\/div><div class=\"hc-link\"><h3><a href=\"https:\/\/hachillspa.com\/blog\/how-to-keep-cold-plunge-water-clean\/\">Cold plunge water-care guide<\/a><\/h3><p>Use this verified page for the next water maintenance decision.<\/p><\/div><div class=\"hc-link\"><h3><a href=\"https:\/\/hachillspa.com\/request-quote\/\">Request a project quotation<\/a><\/h3><p>Use this verified page for the next RFQ decision.<\/p><\/div><\/div><\/section>\n  <section class=\"hc-section\" id=\"hc-2249-sources\"><h2>Reference basis<\/h2><ul><li><a href=\"https:\/\/www.fpl.fs.usda.gov\/documnts\/fplgtr\/fpl_gtr282.pdf\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">US Forest Products Laboratory Wood Handbook<\/a> - Reference on wood, moisture relationships and exterior exposure; product-specific treatment and maintenance instructions still control.<\/li><li><a href=\"https:\/\/nickelinstitute.org\/en\/library\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Nickel Institute stainless steel resources<\/a> - Material background for stainless steel selection and corrosion mechanisms; exact alloy and fabrication evidence must be model-specific.<\/li><li><a href=\"https:\/\/www.cdc.gov\/model-aquatic-health-code\/php\/our-work\/index.html\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">CDC Model Aquatic Health Code<\/a> - Public aquatic-facility design and operating guidance; adoption and local applicability vary.<\/li><li><a href=\"https:\/\/www.nsf.org\/knowledge-library\/nsf-ansi-can-50-equipment-for-swimming-pools-spas-hot-tubs\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">NSF\/ANSI\/CAN 50 overview<\/a> - Scope reference for circulation, filtration and treatment equipment; this is not a HACHILL certification claim.<\/li><\/ul><\/section>\n  <aside class=\"hc-note\"><p><strong>Technical and safety boundary for Thermowood Cladding and Stainless Liners Explained:<\/strong> Product manuals, approved drawings, local building, electrical, public-health and accessibility requirements, licensed trades and qualified medical or safety professionals take priority over general web guidance. This article does not claim certification, guaranteed site performance or individual medical benefit.<\/p><\/aside>\n  <div class=\"hc-cta\"><h2>Turn the comparison into a project brief<\/h2><p>For a thermowood cold plunge cladding review, send HACHILL the application, user pattern, target conditions, available site, utilities, destination, required documentation and quantity. The team can review a product-family or model shortlist while keeping unverified fields open.<\/p><a class=\"hc-button\" href=\"https:\/\/hachillspa.com\/request-quote\/\">Request a project review<\/a><\/div>\n<\/article>\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Is thermowood a cold plunge liner?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Usually it is external cladding, but construction varies. Request a section drawing and material schedule that identify the water-holding liner, structure, insulation and cladding for the exact model.\"}},{\"@type\":\"Question\",\"name\":\"Why do liner welds matter?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Weld geometry, heat tint removal, finishing and contamination control can affect cleanability and local corrosion behaviour. Ask for the fabrication and inspection basis rather than relying on alloy wording alone.\"}},{\"@type\":\"Question\",\"name\":\"Can stainless steel stain the wood?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Staining can originate from metal runoff, contaminated hardware, trapped water or cleaning residues. Trace the source before concluding that the liner is corroding.\"}},{\"@type\":\"Question\",\"name\":\"Should thermowood joints be sealed completely?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Not automatically. The assembly needs controlled drainage, drying and movement. 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