{"id":6752,"date":"2026-08-20T00:11:42","date_gmt":"2026-08-19T16:11:42","guid":{"rendered":"https:\/\/www.shinepvc.com\/?post_type=product&p=6752"},"modified":"2026-08-25T18:05:29","modified_gmt":"2026-08-25T10:05:29","slug":"waterproof","status":"publish","type":"product","link":"https:\/\/www.shinepvc.com\/ko\/pvc-foam-board\/waterproof\/","title":{"rendered":"Waterproof PVC Foam Board"},"content":{"rendered":"
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Description<\/span><\/h2>\n<\/div>\n
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Sealed Cells and Low Absorption<\/span><\/h3>\n

All PVC foam board is closed cell. Every gas bubble in the foam structure is individually sealed inside a PVC wall, and there are no interconnected capillary channels through the board. This is not a coating, a laminate, or a post-treatment, it is the result of the chemical foaming process during extrusion. The board absorbs less than 1% of its weight in water after 24 hours of full immersion (factory nominal; third-party verification available on request). By contrast, wood-based panels absorb 20 to 40% in the same test.<\/p>\n

No Swelling, Softening, or Strength Loss When Wet<\/span><\/h3>\n

Waterproof means something specific: the board will not swell, soften, or lose mechanical integrity when wet.<\/strong>This separates PVC from wood-based panels. MDF, particleboard, and plywood rely on adhesives to bind wood fibers or veneers together. Water swells the fibers, stresses the adhesive bonds, and the panel delaminates. PVC contains no fibers, no adhesives, nothing that water can swell. Prolonged immersion does not change its dimensions the way it destroys wood-based panels.<\/p>\n

One Attribute Across Three Board Types<\/span><\/h3>\n

Waterproof is not a single product category; it is a performance attribute that spans all three board types.<\/strong> Free foam board is waterproof and works for indoor wet-area signage and temporary displays. Celuka adds the hard skin and screw-holding strength needed for bathroom furniture. Co-extruded adds a UV-stabilized surface layer for outdoor applications where the board faces both water and sunlight. The right choice depends on what else it must do besides stay dry.<\/p>\n

Waterproof Is Not UV-Proof<\/span><\/h3>\n

Water and sunlight are separate threats.<\/strong> Standard PVC foam board, all types, will degrade under prolonged UV exposure, yellowing and embrittling within 1 to 2 years outdoors. If the application is exterior, the board needs both waterproofing and UV stabilization. Only co-extruded board (Shine internal durability classification, 8 to 10 years; not an ISO\/ASTM standard grade; independent weathering data available on request) and UV-stabilized Celuka (5 to 7 years) provide both. Do not specify a standard board for an outdoor application simply because it is waterproof.<\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

Every Shine PVC foam board is waterproof by construction: closed cells keep water absorption below 1% under 24-hour immersion, and the board does not swell, soften, or lose strength when wet.<\/p>\n

The right choice for a wet-area project depends on what else the board must do, Celuka for bathroom furniture with screw holding, co-extruded for outdoor exposure where water and UV come together.<\/p>\n

One caution applies to all of them: cut edges expose the foam cells and must be sealed with edge banding or PVC welding.<\/p>","protected":false},"featured_media":6643,"template":"","meta":{"_gspb_post_css":"","_crdt_document":"","_uag_custom_page_level_css":""},"product_brand":[],"product_cat":[17],"product_tag":[159],"class_list":["post-6752","product","type-product","status-publish","has-post-thumbnail","product_cat-pvc-foam-board","product_tag-function","first","instock","shipping-taxable","product-type-simple"],"uagb_featured_image_src":{"full":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-waterproof-01.webp",1000,1000,false],"thumbnail":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-waterproof-01-150x150.webp",150,150,true],"medium":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-waterproof-01-300x300.webp",300,300,true],"medium_large":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-waterproof-01-768x768.webp",768,768,true],"large":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-waterproof-01.webp",1000,1000,false],"1536x1536":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-waterproof-01.webp",1000,1000,false],"2048x2048":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-waterproof-01.webp",1000,1000,false],"trp-custom-language-flag":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-waterproof-01.webp",12,12,false],"woocommerce_archive_thumbnail":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-waterproof-01-500x500.webp",500,500,true],"woocommerce_thumbnail":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-waterproof-01-300x300.webp",300,300,true],"woocommerce_single":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-waterproof-01-300x300.webp",300,300,true],"woocommerce_gallery_thumbnail":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-waterproof-01-100x100.webp",100,100,true]},"uagb_author_info":{"display_name":"Yuzhi","author_link":"https:\/\/www.shinepvc.com\/ko\/author\/"},"uagb_comment_info":0,"uagb_excerpt":"Every Shine PVC foam board is waterproof by construction: closed cells keep water absorption below 1% under 24-hour immersion, and the board does not swell, soften, or lose strength when wet. The right choice for a wet-area project depends on what else the board must do, Celuka for bathroom furniture with screw holding, co-extruded for…","_links":{"self":[{"href":"https:\/\/www.shinepvc.com\/ko\/wp-json\/wp\/v2\/product\/6752","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shinepvc.com\/ko\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.shinepvc.com\/ko\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.shinepvc.com\/ko\/wp-json\/wp\/v2\/media\/6643"}],"wp:attachment":[{"href":"https:\/\/www.shinepvc.com\/ko\/wp-json\/wp\/v2\/media?parent=6752"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.shinepvc.com\/ko\/wp-json\/wp\/v2\/product_brand?post=6752"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.shinepvc.com\/ko\/wp-json\/wp\/v2\/product_cat?post=6752"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.shinepvc.com\/ko\/wp-json\/wp\/v2\/product_tag?post=6752"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}