{"product_id":"willseal-stc-sound-control","title":"Tremco Willseal STC Sound-Control Joint Seal","description":"\u003cstyle\u003e.product-info buy-buttons,.product-info price-list,.product-info shopify-payment-terms,.product-info quantity-selector,.product-info .quantity-selector{display:none !important;}\u003c\/style\u003e\u003cdiv style=\"background:#1C4F8A;border:1px solid #14263F;border-radius:6px;padding:14px 18px;margin:0 0 18px 0;\"\u003e\n\u003cp style=\"margin:0;font-size:1.02em;color:#ffffff;\"\u003e\u003cstrong\u003e📐 Project-Quoted Product — North Vancouver, BC.\u003c\/strong\u003e Expansion joint systems are sized to your joint width, depth and run length and priced per project. Send us your joint schedule and we confirm pricing and lead time within one business day. Call \u003ca href=\"tel:2502333000\" style=\"color:#ffffff;font-weight:bold;text-decoration:underline;\"\u003e250-233-3000\u003c\/a\u003e or \u003ca href=\"\/pages\/request-a-quote\" style=\"color:#ffffff;font-weight:bold;text-decoration:underline;\"\u003erequest a project quote\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp style=\"margin:12px 0 0;\"\u003e\u003ca href=\"\/pages\/request-a-quote\" style=\"display:inline-block;background:#D6A52A;color:#14263F;font-weight:bold;text-transform:uppercase;letter-spacing:.05em;padding:12px 26px;border-radius:4px;text-decoration:none;\"\u003eRequest a Project Quote\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"color:#1C4F8A;margin-top:0;\"\u003eWillseal STC — Sound-Control Joint Seal\u003c\/h2\u003e\n\u003cp style=\"font-size:1.08em;color:#333;\"\u003e\u003cstrong\u003eCompressible, acoustically tested joint sealant for static interior joints\u003c\/strong\u003e | Brand: Tremco (Willseal) | Model: Willseal STC\u003c\/p\u003e\n\u003cp style=\"font-size:1.02em;color:#444;\"\u003eWillseal STC is a compressible joint sealant for static interior joints that need sound control, built from fire-resistant, acrylic-impregnated polyurethane foam with a factory silicone coating on one, two, three or four sides. The foam is black; the silicone comes in standard Spectrem colours. Browse the full \u003ca href=\"\/collections\/trem\" style=\"color:#1C4F8A;\"\u003eTremco range\u003c\/a\u003e at Canopus Supply.\u003c\/p\u003e\n\u003cdiv style=\"border-left:4px solid #1C4F8A;background:#eef4fa;padding:14px 18px;margin:18px 0;border-radius:4px;\"\u003e\n\u003cstrong style=\"color:#1C4F8A;\"\u003eProfessional note:\u003c\/strong\u003e Willseal STC is for static joints only — it is not rated for dynamic movement or traffic. Tested to ASTM E90: STC 51 in a 55-STC wall and OITC 40 in a 42-OITC wall.\u003c\/div\u003e\n\u003ch2 style=\"color:#1C4F8A;\"\u003ePerformance Highlights\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:8px 0;\"\u003e\u003ctbody\u003e\n\u003ctr style=\"background:#eef4fa;\"\u003e\n\u003ctd style=\"border:1px solid #c9d6e5;padding:10px;\"\u003e\n\u003cstrong\u003eSound Transmission\u003c\/strong\u003e\u003cbr\u003eSTC 51 in a 55-STC wall (ASTM E90)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #c9d6e5;padding:10px;\"\u003e\n\u003cstrong\u003eOutdoor-Indoor Transmission\u003c\/strong\u003e\u003cbr\u003eOITC 40 in a 42-OITC wall (ASTM E90)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #c9d6e5;padding:10px;\"\u003e\n\u003cstrong\u003eJoint Sizes\u003c\/strong\u003e\u003cbr\u003e1\/2 in. to 6 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#eef4fa;\"\u003e\n\u003ctd style=\"border:1px solid #c9d6e5;padding:10px;\"\u003e\n\u003cstrong\u003eStick Length\u003c\/strong\u003e\u003cbr\u003e6.5 ft\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #c9d6e5;padding:10px;\"\u003e\n\u003cstrong\u003eTemperature Stability\u003c\/strong\u003e\u003cbr\u003e−40 °F to 248 °F short term\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #c9d6e5;padding:10px;\"\u003e\n\u003cstrong\u003eSilicone Coating\u003c\/strong\u003e\u003cbr\u003e1, 2, 3 or 4 sides; standard Spectrem colours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch2 style=\"color:#1C4F8A;\"\u003eTypical Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWindow-to-wall connections\u003c\/li\u003e\n\u003cli\u003ePartitions and curtain wall installations\u003c\/li\u003e\n\u003cli\u003eOffices, conference and quiet rooms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color:#1C4F8A;\"\u003eLimitations\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eStatic joints only — not for dynamic or traffic-rated joints; confirm against the current TDS.\u003c\/li\u003e\n\u003cli\u003eNot for submerged joints; confirm against the current TDS.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color:#1C4F8A;\"\u003eHealth \u0026amp; Safety\u003c\/h2\u003e\n\u003cp\u003eThe Safety Data Sheet for Willseal STC is aligned with GHS requirements. Refer to the manufacturer's Safety Data Sheet for complete information.\u003c\/p\u003e\n\u003cdiv style=\"border-left:4px solid #1C4F8A;background:#eef4fa;padding:12px 18px;margin:16px 0;border-radius:4px;\"\u003e\n\u003cstrong\u003ePurchasing Note:\u003c\/strong\u003e All sales are intended for professional and trade purchasers. Expansion joint products are ordered to project-specific sizes — confirm joint width, depth, movement class, quantity and delivery requirements when requesting your quote. Product use and installation are the responsibility of the purchaser and installer.\u003c\/div\u003e\n\u003cdiv style=\"border-left:4px solid #1C4F8A;background:#eef4fa;padding:12px 18px;margin:16px 0;border-radius:4px;\"\u003e\u003cspan style=\"color:#444;\"\u003eSizing an expansion joint? \u003ca href=\"\/pages\/contact-us\" style=\"color:#1C4F8A;font-weight:bold;\"\u003eContact Canopus Supply\u003c\/a\u003e — \u003ca href=\"tel:2502333000\" style=\"color:#1C4F8A;\"\u003e250-233-3000\u003c\/a\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003chr\u003e\n\u003cp style=\"font-size:0.9em;color:#555;\"\u003e\u003cstrong style=\"color:#1C4F8A;\"\u003eTremco\u003c\/strong\u003e — Professional Sealants \u0026amp; Waterproofing Systems\u003c\/p\u003e\n\u003cp style=\"font-size:0.85em;color:#777;\"\u003e\u003cem\u003eTechnical information is provided for professional reference only. Product selection, joint sizing, substrate preparation, application and final performance remain the responsibility of the purchaser, installer and project specifier. Always confirm against the current TDS, SDS, project specification and site conditions before use.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:0.85em;color:#777;\"\u003e\u003cem\u003eAvailable at Canopus Supply — North Vancouver, BC. Authorized distributor in British Columbia.\u003c\/em\u003e\u003c\/p\u003e","brand":"Tremco","offers":[{"title":"Default Title","offer_id":52134371164380,"sku":"WILLSEAL-STC","price":0.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0579\/9483\/8195\/files\/unnamed_d1726ea3-fa4a-405c-8ff4-340c606f2e7d.jpg?v=1785367312","url":"https:\/\/www.canopussupply.com\/products\/willseal-stc-sound-control","provider":"Canopus Supply Inc","version":"1.0","type":"link"}