{"product_id":"sikaflex-1a-kit-one-component-polyurethane-sealant-durable-flexible","title":"Sikaflex 1a Kit One Component Polyurethane Sealant - Durable, Flexible","description":"\u003cp\u003eIn this review the AWF PRO Sikaflex 1a Kit is evaluated as a practical sealant package for contractors and DIYers who need a reliable, flexible polyurethane for exterior joints. The bottom line: this kit is best for users who require a high performance, non sag sealant supplied in five 20 oz sausage cartridges plus a heavy duty caulk gun, and the single biggest reason to buy is its broad adhesion and durability in damp concrete and weather-exposed applications. The review focuses on real useability, coverage expectations, and where its elasticity and standards compliance matter most.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne component, moisture cured:\u003c\/strong\u003e ready to use without mixing, which simplifies on-site application and speeds up work on both vertical and horizontal surfaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh elasticity:\u003c\/strong\u003e cures to a flexible sealant with approximately +\/- 35% movement capacity, useful for joints that experience thermal or structural movement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon sag formula:\u003c\/strong\u003e stays in place on vertical joints and fillets, reducing the need for backer rod or excessive tooling during installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide adhesion:\u003c\/strong\u003e bonds to most construction materials without a primer, saving prep time for common substrates like concrete, masonry, and metal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete kit:\u003c\/strong\u003e includes five 20 oz aluminum gray sausages and a heavy duty 20 oz caulk gun, providing immediate value and the tools needed to start the job.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards compliant:\u003c\/strong\u003e meets ASTM C-920 and federal and Canadian specifications, giving confidence for professional and regulated projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe Sikaflex 1a Kit suits builders, maintenance crews, and experienced DIYers working on windows, door frames, small joints, flashing details, and concrete seams where a durable, weather-resistant seal is required. Its ability to cure in damp or green concrete makes it a good choice for projects that cannot wait for fully dry substrates.\u003c\/p\u003e\n\u003cp\u003eIt is less appropriate for very deep joints over 1\/2 in, or for users who need a colored match beyond the provided aluminum gray; in those cases a different product formulated for deep fill or specific color palettes would be better.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh performance polyurethane provides excellent adhesion and weather resistance.\u003c\/li\u003e\n\u003cli\u003eFlexible +\/- 35% movement retention reduces the chance of cracking in variable joints.\u003c\/li\u003e\n\u003cli\u003eKit includes five 20 oz sausages plus a heavy duty caulk gun for immediate use and good value for the quantity.\u003c\/li\u003e\n\u003cli\u003eWorks on damp or green concrete and meets major specifications for professional use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaximum recommended sealant depth is 1\/2 in, so it is not intended for deep joint applications.\u003c\/li\u003e\n\u003cli\u003eOnly supplied in aluminum gray which may require paint or alternative sealants for aesthetic color matches.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003eOne component polyurethane sealant kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContents\u003c\/td\u003e\n\u003ctd\u003eFive 20 oz aluminum gray sausage cartridges and one heavy duty 20 oz caulk gun\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMovement capability\u003c\/td\u003e\n\u003ctd\u003eApproximately +\/- 35% elasticity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax sealant depth\u003c\/td\u003e\n\u003ctd\u003e1\/2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface use\u003c\/td\u003e\n\u003ctd\u003eVertical and horizontal joints, windows, door frames, fillets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandards\u003c\/td\u003e\n\u003ctd\u003eMeets ASTM C-920, Federal TT-S-00230C Type II, Canadian CAN\/CGSB 19.13-M87\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe AWF PRO Sikaflex 1a Kit is a practical, value-oriented package for professionals and competent DIYers who need a reliable, high performance, non sag polyurethane sealant for exterior joints. Its strong adhesion, weather resistance, and included caulk gun make it a smart buy for small to medium joint work, though users with deeper joints or precise color needs should consider alternatives. Overall it delivers solid value for most construction sealing tasks.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan Sikaflex 1a be used on damp concrete?\u003c\/strong\u003e\u003cbr\u003eYes, it can be used in green and damp concrete applications and is formulated to cure in such conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow deep can the sealant be applied?\u003c\/strong\u003e\u003cbr\u003eIt is designed for joints where maximum depth of sealant will not exceed 1\/2 in; deeper joints require a different product.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the kit include an applicator?\u003c\/strong\u003e\u003cbr\u003eYes, the kit includes one AWF 2100 heavy duty 20 oz caulk gun along with five 20 oz sausage cartridges.\u003c\/p\u003e","brand":"AWF PRO","offers":[{"title":"Default Title","offer_id":48175003992283,"sku":"B08TCHFQBS","price":103.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61zM5Lvi-lL._SL1280.jpg?v=1769606099","url":"https:\/\/gearmusthave.com\/products\/sikaflex-1a-kit-one-component-polyurethane-sealant-durable-flexible","provider":"GearMustHave","version":"1.0","type":"link"}