--- product_id: 606423033 title: "PU expanding foam spray – SikaBoom AP – Single component polyurethane foam – Fast curing – HFC-free – Easy to apply – 250 ml – Light Yellow" brand: "sika" price: "£8.84" currency: GBP in_stock: true reviews_count: 8 url: https://www.desertcart.co.uk/products/606423033-pu-expanding-foam-spray-sikaboom-ap-single-component-polyurethane-foam store_origin: GB region: United Kingdom --- # Expands up to 3 inches Superior thermal insulation High-density durable seal PU expanding foam spray – SikaBoom AP – Single component polyurethane foam – Fast curing – HFC-free – Easy to apply – 250 ml – Light Yellow **Brand:** sika **Price:** £8.84 **Availability:** ✅ In Stock ## Summary > 🛠️ Seal Smart, Live Comfortable – Don’t Let Gaps Define Your Space! ## Quick Answers - **What is this?** PU expanding foam spray – SikaBoom AP – Single component polyurethane foam – Fast curing – HFC-free – Easy to apply – 250 ml – Light Yellow by sika - **How much does it cost?** £8.84 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/606423033-pu-expanding-foam-spray-sikaboom-ap-single-component-polyurethane-foam) ## Best For - sika enthusiasts ## Why This Product - Trusted sika brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** High-density polyurethane foam that flexes with building movements for a resilient, long-lasting seal. - • **Maximize Every Gap:** Expands aggressively to fill cracks up to 3 inches, ensuring no space is left behind. - • **Effortless Application:** Shake, spray, and shape—cured foam is easy to trim for a flawless, professional finish every time. - • **Tailored to Your Needs:** Available in 250 ml, 500 ml, and 750 ml cans—choose the perfect size for any project scale. - • **Thermal & Acoustic Shield:** Keeps your space cozy and quiet by blocking cold drafts and dampening noise effectively. ## Overview SikaBoom AP PU Joint Filler is a high-expansion, multi-position polyurethane foam designed for professional-grade filling, sealing, and insulating of gaps up to 3 inches. Engineered for durability and flexibility, it withstands building movement while providing superior thermal and acoustic insulation. Available in multiple sizes, this light yellow foam from Germany ensures a clean, efficient application with easy trimming for a perfect finish. ## Description Our products might not always be visible but the results they achieve are clear to see. From providing top quality adhesives for your home or bonding one in every three car windscreens worldwide… . Our comprehensive range of products for bonding, sealing, damping, reinforcing, and protecting in the building sector and motor vehicle industry, benefit from more than 110 years of and . Clean and moisten the surface to obtain maximum adhesion and expansion. Shake the can vigorously at least 20 times. Fix the nozzle and extrude the foam by pressing more or less hard on the trigger. Cured foam easy to cut for finishing. ## Features - HIGH EXPANSION RATE – SikaBoom AP expandable foam provides effective filling, sealing and insulation to gaps and cracks up to three inches in size - IMPROVED DURABILITY – Use this fixing foam to fill and insulate window connection joints and gaps in doorframes, AC duct and vents, roller blind housings and pipe entry points - FLEXIBLE – Multi-positioning polyurethane foam is high density to provide a strong seal, withstanding building and material movement - SUPERIOR INSULATION – Being a PU foam spray, it thermally insulates, keeps out the cold and draughts, and dampens noise - CHOOSE YOUR SIZE – Cans come in 250 ml, 500 ml and 750 ml quantities of light yellow foam ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0CRL3TH78 | | Best Sellers Rank | #17 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #2 in Single-component Expanding Foam | | Brand | SIKA | | Colour | Light yellow | | Country Of Origin | Germany | | Customer Reviews | 3.9 3.9 out of 5 stars (2,627) 3.9 out of 5 stars | | Date First Available | 5 January 2024 | | Generic Name | Expansing foam | | Importer | Sika India Private Ltd. Plot No D 101/2, MIDC Industrial Area, Shiravane,, Nerul, 400706 Navi Mumbai, India, Contact: +91-22-6270-4038 | | Included Components | 1 aerosol | | Item Dimensions Lxwxh | 6 x 6 x 20 Centimeters | | Item Height | 20 Centimeters | | Item Model Number | 73836 | | Item Weight | 280 g | | Item Width | 6 Centimeters | | Manufacturer | Sika, Sika India Private Ltd. Plot No D 101/2, MIDC Industrial Area, Shiravane,, Nerul, 400706 Navi Mumbai, India, Contact: +91-22-6270-4038 | | Model Number | 73836 | | Net Quantity | 250 Milliliters | | Number Of Memory Sticks | 1 | | Packer | Sika India Private Ltd. Plot No D 101/2, MIDC Industrial Area, Shiravane,, Nerul, 400706 Navi Mumbai, India, Contact: +91-22-6270-4038 | | Product Dimensions | 6 x 6 x 20 cm; 280 g | ## Images ![PU expanding foam spray – SikaBoom AP – Single component polyurethane foam – Fast curing – HFC-free – Easy to apply – 250 ml – Light Yellow - Image 1](https://m.media-amazon.com/images/I/51skhTpKifL.jpg) ![PU expanding foam spray – SikaBoom AP – Single component polyurethane foam – Fast curing – HFC-free – Easy to apply – 250 ml – Light Yellow - Image 2](https://m.media-amazon.com/images/I/61NGTxeBQSL.jpg) ![PU expanding foam spray – SikaBoom AP – Single component polyurethane foam – Fast curing – HFC-free – Easy to apply – 250 ml – Light Yellow - Image 3](https://m.media-amazon.com/images/I/718dj8ClYsL.jpg) ![PU expanding foam spray – SikaBoom AP – Single component polyurethane foam – Fast curing – HFC-free – Easy to apply – 250 ml – Light Yellow - Image 4](https://m.media-amazon.com/images/I/71k80mAjPEL.jpg) ![PU expanding foam spray – SikaBoom AP – Single component polyurethane foam – Fast curing – HFC-free – Easy to apply – 250 ml – Light Yellow - Image 5](https://m.media-amazon.com/images/I/61mquFHjO2L.jpg) ## Available Options This product comes in different **Style Name** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good product *by on Reviewed in India 11 May 2026* Did the job well.Expanded into an off white foam and held strong after filling water ### ⭐⭐⭐⭐ Its good, but use with caution. *by on Reviewed in India 5 April 2026* Its nice, does it's job well. But detailed instructions on usage not written, especially not to touch the foam with bare hands, in case of any adjustments. I am cleaning hands since 4 hours now, with different chemicals lol.It expands after application, so use carefully.There is some close date written below the can, if that's expiry date, it seems quite near. ### ⭐⭐⭐⭐⭐ Excellent product.. *by on Reviewed in India 12 May 2026* Excellent product. I bought it again. It gets the job done. ## Frequently Bought Together - SIKA – PU expanding foam spray – SikaBoom AP – Single component polyurethane foam – Fast curing – HFC-free – Easy to apply – 250 ml – Light Yellow - Dr. Fixit Kwik N Ezee Wall Gap & Crack Filler, 150gm (White), DIY Waterproofing for Home Repairs, Kitchen Sink & Wall Cracks, Bathroom Tile Gaps Sealant, Metal, Wood, PVC, Best for Wet & Damp areas - Unity Brand Tiles Gap Filler Waterproof, Gap Sealant, Grout, White Cement Paste Tube, Gap Filler for Walls and Joints, Waterproof Sealant, Tile Gap Filler Tube for Kitchen, Bathroom (180 ML.) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/606423033-pu-expanding-foam-spray-sikaboom-ap-single-component-polyurethane-foam](https://www.desertcart.co.uk/products/606423033-pu-expanding-foam-spray-sikaboom-ap-single-component-polyurethane-foam) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-30*