{"title":"Exterior silicone sealant","description":"\u003ch2\u003eSilicone for Exterior Applications\u0026nbsp;\u003c\/h2\u003e\n\u003cp\u003eWhen joints are permanently exposed to outdoor conditions, special silicone sealants are required. Typical exterior applications include façade joints, window and door connections as well as transitions between different building materials. \u003cstrong\u003eExterior silicone\u003c\/strong\u003e provides an elastic seal and reliably protects against moisture penetration. Thanks to its long-lasting flexibility, \u003cstrong\u003eoutdoor silicone\u003c\/strong\u003e is ideal for areas where material movement occurs.\u003c\/p\u003e\n\u003ch2\u003eWhy is special silicone required for exterior use?\u003c\/h2\u003e\n\u003cp\u003eExterior joints are exposed to significantly higher loads than interior joints. In addition to moisture, temperature fluctuations and structural movement affect the joints. \u003cstrong\u003eSilicone for exterior applications\u003c\/strong\u003e is specifically designed to permanently compensate for these stresses. Using an unsuitable sealant outdoors can lead to cracks, leaks or moisture damage to the building structure.\u003c\/p\u003e\n\u003ch2\u003eTypical applications for exterior silicone\u003c\/h2\u003e\n\u003cp\u003eSilicone is used in many areas outside the building. These include exterior façade joints, \u003cstrong\u003esilicone for window connections\u003c\/strong\u003e as well as joints at exterior doors or balconies. \u003cstrong\u003eOutdoor silicone\u003c\/strong\u003e is also used to seal transitions between masonry, concrete, metal or other building materials, ensuring a durable and watertight joint.\u003c\/p\u003e\n\u003ch3\u003eSilicone for façades and exterior joints\u003c\/h3\u003e\n\u003cp\u003eFaçade silicone is used to seal exterior joints between façade elements or at transitions to the building structure. These joints must remain permanently elastic in order to absorb movement. A suitable \u003cstrong\u003efaçade silicone\u003c\/strong\u003e protects the building envelope against moisture ingress and contributes to the long-term preservation of the building.\u003c\/p\u003e\n\u003ch3\u003eSilicone for windows in exterior areas\u003c\/h3\u003e\n\u003cp\u003eWindow silicone is used to reliably seal window connections in exterior areas. It must compensate for movement between the window frame and the masonry. \u003cstrong\u003eExterior silicone\u003c\/strong\u003e provides a flexible seal and prevents moisture from penetrating the building fabric.\u003c\/p\u003e\n\u003ch2\u003eNatural stone silicone sealant in exterior areas\u003c\/h2\u003e\n\u003cp\u003eSealing natural stone and marble in exterior areas requires special attention. Natural stone is a sensitive material that can react to unsuitable sealants with discolouration or so-called edge zone contamination. These visual defects are often irreversible. In exterior areas, joints are additionally exposed to moisture, temperature fluctuations and weather conditions. Therefore, it is essential to use a silicone sealant that is suitable for both exterior use and natural stone. Both our \u003ca href=\"https:\/\/henddoek.com\/en\/products\/ottoseal-s-70-exterior-caulk\" title=\"to the product OTTOSEAL S 70 – exterior caulk\"\u003eexterior caulk \u003c\/a\u003e and the low-odour \u003ca title=\"to the product OTTOSEAL S 80 – exterior decorators caulk\" href=\"https:\/\/henddoek.com\/en\/products\/ottoseal-s-80-exterior-decorators-caulk\"\u003elow-odour silicone S80\u003c\/a\u003e are an excellent choice for these applications.\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0756\/5603\/6671\/files\/OTTOSEAL-S-70_160x160.webp?v=1760532735\" alt=\"Product image OTTOSEAL S 70\" style=\"margin-top: 16px; margin-bottom: 16px; float: none;\"\u003e \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0756\/5603\/6671\/files\/OTTOSEAL-S80_160x160.webp?v=1769684369\" alt=\"Product image OTTOSEAL S 80 low-odour natural stone silicone\" style=\"margin-top: 16px; margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003ch3\u003eWhy is not every exterior silicone suitable for natural stone?\u003c\/h3\u003e\n\u003cp\u003eMany \u003ca href=\"https:\/\/henddoek.com\/en\/collections\/acetoxy-silicone-sealant\" title=\"category Acetoxy silicone sealant\"\u003eacetoxy-curing silicones\u003c\/a\u003e are not suitable for natural stone or marble. The release of acetic acid or certain ingredients can cause discolouration at the joint edges, especially on light-coloured or porous stones. In exterior areas, moisture can further intensify these effects, making careful product selection essential.\u003c\/p\u003e\n\u003ch3\u003eNeutral-curing silicone for natural stone in exterior areas\u003c\/h3\u003e\n\u003cp\u003eFor natural stone and marble in exterior areas, a neutral-curing silicone should always be used. It cures without releasing acetic acid and is particularly material-friendly. \u003ca title=\"category Neutral cure silicone\" href=\"https:\/\/henddoek.com\/en\/collections\/neutral-cure-silicone\"\u003eNeutral-curing silicone\u003c\/a\u003e is suitable for joints on natural stone façades, stone window sills, exterior steps, terrace connections and other high-quality natural stone surfaces in outdoor areas.\u003c\/p\u003e\n\u003ch2\u003eHow to apply exterior silicone correctly\u003c\/h2\u003e\n\u003cp\u003eCareful application is essential for a long-lasting exterior joint. The surface should be clean, dry and free from old sealant residues. After application with a \u003ca href=\"https:\/\/henddoek.com\/en\/products\/otto-manual-caulking-gun\" title=\"to the product OTTO manual caulking gun\"\u003ecartridge gun\u003c\/a\u003e, the silicone should be smoothed evenly to create a closed surface. Full curing depends on joint thickness and ambient conditions.\u003c\/p\u003e\n\u003cp\u003eYou can find additional sealants in the category \u003ca title=\"category Silicone \u0026amp; decorators caulk\" href=\"https:\/\/henddoek.com\/en\/collections\/silicone-and-decorators-caulk\"\u003esilicone caulk\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"ottoseal-s-125-boden-sanitar-silikon","title":"OTTOSEAL S 125 – sanitary silicone","description":"\u003ch2\u003eOTTOSEAL® S 125 - floor \u0026amp; sanitary silicone for demanding applications\u003c\/h2\u003e\n\u003cp\u003eWhether for bathrooms, kitchens, floors or façades - OTTOSEAL® S 125 is a versatile premium silicone for indoor and outdoor use. The low-odour sealant is easy to apply and impresses with its high elasticity and strong adhesion - even on modern design coverings such as vinyl, PVC or rubber.\u003c\/p\u003e\u003cp\u003eThanks to its fungicidal finish, OTTOSEAL® S 125 reliably protects against mould infestation - ideal for damp rooms and hygienically sensitive areas. Its tested suitability for food-related use (ISEGA) also makes it the perfect solution for kitchens, canteens and catering areas.\u0026nbsp;For other applications, you can find more\u0026nbsp;\u003ca href=\"https:\/\/henddoek.com\/en\/collections\/bathroom-silicone-and-decorators-caulk\" title=\"category Bathroom silicone \u0026amp; decorators caulk\"\u003esilicone caulk and decorators caulk\u003c\/a\u003e\u0026nbsp;in the corresponding category.\u003c\/p\u003e\u003cp\u003eAvailable in numerous colours - including many matt shades - OTTOSEAL® S 125 ensures a harmonious joint pattern for any floor covering or sanitary project. A real all-rounder for professionals and detail-loving DIY enthusiasts.\u003c\/p\u003e\u003cp\u003eWith our\u0026nbsp;\u003ca href=\"https:\/\/henddoek.com\/en\/products\/joint-cutter\" title=\"to the product Joint cutter\"\u003ejoint cutter\u003c\/a\u003e, you will also find the perfect tool for removing joints from old acrylic or silicone.\u003c\/p\u003e","brand":"Hermann Otto","offers":[{"title":"transparent C00","offer_id":56417470087549,"sku":"A0005252","price":6.29,"currency_code":"EUR","in_stock":true},{"title":"white C01","offer_id":57778088444285,"sku":"A0005503","price":6.29,"currency_code":"EUR","in_stock":true},{"title":"matt white C6919","offer_id":57778088739197,"sku":"A0005512","price":6.29,"currency_code":"EUR","in_stock":true},{"title":"snow white C116","offer_id":56417470022013,"sku":"A0005250","price":6.29,"currency_code":"EUR","in_stock":true},{"title":"light jasmine C112","offer_id":57778088509821,"sku":"A0005505","price":6.29,"currency_code":"EUR","in_stock":true},{"title":"helljasmin matt C8336","offer_id":57778088804733,"sku":"A0005514","price":6.29,"currency_code":"EUR","in_stock":true},{"title":"silver grey C94","offer_id":57778088837501,"sku":"A0005515","price":6.29,"currency_code":"EUR","in_stock":true},{"title":"manhattan C43","offer_id":56417470054781,"sku":"A0005251","price":6.29,"currency_code":"EUR","in_stock":true},{"title":"manhattan matt C6874","offer_id":57778088706429,"sku":"A0005511","price":6.29,"currency_code":"EUR","in_stock":true},{"title":"sanitary grey C18","offer_id":57778088542589,"sku":"A0005506","price":6.29,"currency_code":"EUR","in_stock":true},{"title":"sanitary grey matt C6834","offer_id":57778088673661,"sku":"A0005510","price":6.29,"currency_code":"EUR","in_stock":true},{"title":"concrete grey C6216","offer_id":57778088608125,"sku":"A0005508","price":6.29,"currency_code":"EUR","in_stock":true},{"title":"matt anthracite grey C6831","offer_id":57778088640893,"sku":"A0005509","price":6.29,"currency_code":"EUR","in_stock":true},{"title":"anthracite C376","offer_id":57778088575357,"sku":"A0005507","price":6.29,"currency_code":"EUR","in_stock":true},{"title":"black C04","offer_id":57778088477053,"sku":"A0005504","price":6.29,"currency_code":"EUR","in_stock":true},{"title":"matt black C7112","offer_id":57778088771965,"sku":"A0005513","price":6.29,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5603\/6671\/files\/OTTOSEAL-S-125.webp?v=1760538532"},{"product_id":"ottoseal-s-70-spezial-silikon-fur-marmor-und-naturstein","title":"OTTOSEAL S 70 – exterior caulk","description":"\u003ch2\u003eOTTOSEAL® S 70 - special silicone for marble and natural stone without edge zone staining\u003c\/h2\u003e\n\u003cp\u003eOTTOSEAL® S 70 is the premium silicone for demanding grouting in natural stone - indoors and outdoors. It was specially developed to prevent discolouration and staining of the edges of sensitive materials such as marble, granite or sandstone. This preserves the natural beauty of the stone in the long term.\u003c\/p\u003e\u003cp\u003eWhether in bathrooms, on terraces, on façades or around the pool: OTTOSEAL® S 70 impresses with its excellent adhesion, weather and UV resistance as well as its fungicidal finish - for clean, mould-free joints for many years to come. The silicone is available in numerous colours, including matt and textured shades that perfectly match natural stone surfaces.\u0026nbsp;You can of course also find more\u0026nbsp;\u003ca href=\"https:\/\/henddoek.com\/en\/collections\/bathroom-silicone-and-decorators-caulk\" title=\"category Bathroom silicone \u0026amp; decorators caulk\"\u003esilicone caulk and decorators caulk\u003c\/a\u003e\u0026nbsp;in our shop.\u003c\/p\u003e\u003cp\u003eOTTOSEAL® S 70 is also tested and approved for use in food-related areas (e.g. kitchen worktops made of natural stone) - a real all-rounder for craftsmanship and design.\u003c\/p\u003e\n\u003cp\u003eYou can remove old acrylic or silicone quickly and easily with our\u0026nbsp;\u003ca href=\"https:\/\/henddoek.com\/en\/products\/joint-cutter\" title=\"to the product Joint cutter\"\u003ejoint cutter\u003c\/a\u003e.\u003c\/p\u003e","brand":"Hermann Otto","offers":[{"title":"transparent C00","offer_id":56417548927357,"sku":"A0005255","price":6.97,"currency_code":"EUR","in_stock":true},{"title":"white C01","offer_id":57777719869821,"sku":"A0005460","price":6.97,"currency_code":"EUR","in_stock":true},{"title":"matt white C6112","offer_id":57777720230269,"sku":"A0005472","price":6.97,"currency_code":"EUR","in_stock":true},{"title":"light grey C38","offer_id":57777720164733,"sku":"A0005469","price":6.97,"currency_code":"EUR","in_stock":true},{"title":"joint grey texture C110","offer_id":57777720000893,"sku":"A0005464","price":6.97,"currency_code":"EUR","in_stock":true},{"title":"manhattan C43","offer_id":57777720197501,"sku":"A0005470","price":6.97,"currency_code":"EUR","in_stock":true},{"title":"manhattan matt C128","offer_id":57777720066429,"sku":"A0005466","price":6.97,"currency_code":"EUR","in_stock":true},{"title":"thistle grey texture C111","offer_id":57777720033661,"sku":"A0005465","price":6.97,"currency_code":"EUR","in_stock":true},{"title":"concrete grey C56","offer_id":56417548861821,"sku":"A0005253","price":6.97,"currency_code":"EUR","in_stock":true},{"title":"matt concrete grey C6113","offer_id":57777720263037,"sku":"A0005473","price":6.97,"currency_code":"EUR","in_stock":true},{"title":"anthracite grey C137","offer_id":57777720131965,"sku":"A0005468","price":6.97,"currency_code":"EUR","in_stock":true},{"title":"anthracite C67","offer_id":57777720361341,"sku":"A0005476","price":6.97,"currency_code":"EUR","in_stock":true},{"title":"matt anthracite C1300","offer_id":57777720099197,"sku":"A0005467","price":6.97,"currency_code":"EUR","in_stock":true},{"title":"black C04","offer_id":57777719902589,"sku":"A0005461","price":6.97,"currency_code":"EUR","in_stock":true},{"title":"matt black C6114","offer_id":57777720295805,"sku":"A0005474","price":6.97,"currency_code":"EUR","in_stock":true},{"title":"jasmine C08","offer_id":57777719935357,"sku":"A0005462","price":6.97,"currency_code":"EUR","in_stock":true},{"title":"pergamon C84","offer_id":57777720394109,"sku":"A0005477","price":6.97,"currency_code":"EUR","in_stock":true},{"title":"sandstone beige C1110","offer_id":56417548894589,"sku":"A0005254","price":6.97,"currency_code":"EUR","in_stock":true},{"title":"bahama beige C10","offer_id":57777719968125,"sku":"A0005463","price":6.97,"currency_code":"EUR","in_stock":true},{"title":"bahama beige matt C6115","offer_id":57777720328573,"sku":"A0005475","price":6.97,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5603\/6671\/files\/OTTOSEAL-S-70.webp?v=1760532735"},{"product_id":"ottoseal-s-80-geruchsarmes-silikon-fuer-naturstein","title":"OTTOSEAL S 80 – exterior decorators caulk","description":"\u003ch2\u003eOTTOSEAL® S 80 – Natural Stone Silicone for High-Quality, Flawless Joints\u003c\/h2\u003e\n\u003cp\u003eChoose maximum safety for natural stone applications: \u003cstrong\u003eOTTOSEAL® S 80\u003c\/strong\u003e is a low-odor silicone sealant designed for demanding joints in marble, granite, sandstone and many other natural stones. Thanks to its excellent workability, joints can be applied precisely, cleanly and evenly – ensuring a professional finish for both interior and \u003cstrong\u003eexterior caulking\u003c\/strong\u003e applications.\u003c\/p\u003e\n\u003ch3\u003eNo edge staining on natural stone with Ottoseal natural stone exterior decorators caulk\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eOTTOSEAL® S 80\u003c\/strong\u003e has been specifically developed for sensitive natural stones and reliably prevents so-called edge staining. Such discoloration is usually caused by plasticizers or oils found in conventional caulks, which migrate into porous stone surfaces and create dark borders over time.\u003c\/p\u003e\n\u003cp\u003eThanks to its \u003cstrong\u003eneutral alkoxy curing system\u003c\/strong\u003e and its \u003cstrong\u003eISO 16938-1 tested compatibility with natural stone\u003c\/strong\u003e, \u003cstrong\u003eOTTOSEAL® S 80\u003c\/strong\u003e releases no staining substances into the stone. As a result, marble, granite and other natural stones remain permanently clean and stain-free – even in moisture-exposed interior or exterior areas.\u003c\/p\u003e\n\u003ch3\u003eOTTOSEAL® S 80 – Additional applications and key properties\u003c\/h3\u003e\n\u003cp\u003eThis premium natural stone silicone also impresses with its \u003cstrong\u003eexcellent resistance to weathering, aging and UV radiation\u003c\/strong\u003e. It is therefore not only suitable for interior use, but also ideal as a \u003cstrong\u003ecaulk for exterior\u003c\/strong\u003e applications such as façades, outdoor surfaces and highly stressed expansion or connection joints. These properties make it a reliable choice for professional \u003cstrong\u003eexterior decorators caulk\u003c\/strong\u003e requirements.\u003c\/p\u003e\n\u003cp\u003eIn addition, the silicone is \u003cstrong\u003efungicide-equipped\u003c\/strong\u003e, providing effective protection against mold growth – ideal for sanitary areas, kitchens and other humid environments. Visually, OTTOSEAL® S 80 also sets new standards: alongside classic colors, the silicone is available in \u003cstrong\u003emat and mat-sanded finishes\u003c\/strong\u003e, allowing it to blend harmoniously with modern natural stone, concrete and architectural design surfaces. For more \u003ca title=\"category Silicone \u0026amp; decorators caulk\" href=\"https:\/\/henddoek.com\/en\/collections\/silicone-and-decorators-caulk\"\u003esilicone caulk\u003c\/a\u003e products and matching accessories, please take a look at the corresponding category.\u003c\/p\u003e\n\u003cp\u003eOTTOSEAL® S 80 is the ideal choice for anyone who refuses to compromise when working with natural stone – perfect for professionals and demanding DIY users alike.\u003c\/p\u003e","brand":"Hermann Otto","offers":[{"title":"antique white C8656","offer_id":57752696488317,"sku":"A0005481","price":7.39,"currency_code":"EUR","in_stock":true},{"title":"sanitary grey C8650","offer_id":57752696390013,"sku":"A0005478","price":7.39,"currency_code":"EUR","in_stock":true},{"title":"concrete grey C8654","offer_id":57752696455549,"sku":"A0005480","price":7.39,"currency_code":"EUR","in_stock":true},{"title":"jasmine C8652","offer_id":57752696422781,"sku":"A0005479","price":7.39,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5603\/6671\/files\/OTTOSEAL-S80.webp?v=1769684369"}],"url":"https:\/\/henddoek.com\/en\/collections\/exterior-silicone-sealant.oembed","provider":"henddoek.com","version":"1.0","type":"link"}