{"title":"► Macsim | Underlay Nails","description":"\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eSecure Sarking \u0026amp; Roofing Felt Fixing That Stays Put\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eRoof underlay is the layer that protects everything beneath it\u003c\/strong\u003e\u003cspan\u003e. If sarking lifts, tears or shifts under wind pressure moisture can track into the structure long before the outer sheet fails. Underlay fastening must clamp securely without damaging the membrane.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis Macsim Underlay Nails collection is engineered for fixing roofing felt, sarking, breathable membranes \u0026amp; insulation wrap to timber battens \u0026amp; roof framing. Designed for wide surface contact \u0026amp; consistent penetration these nails help maintain membrane position during sheet installation \u0026amp; long-term exposure across Australian roofing projects.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eDuring installation stages contractors frequently align fastening supply with \u003c\/span\u003e\u003ca href=\"https:\/\/www.industrialshed.net.au\/collections\/roofing-materials-sealants\" target=\"_blank\" rel=\"noopener\"\u003e\u003cem\u003e\u003cstrong\u003eRoofing Materials \u0026amp; Sealants\u003c\/strong\u003e\u003c\/em\u003e\u003c\/a\u003e\u003cspan\u003e to complete weatherproofing systems. Timber roof framing beneath the membrane may also incorporate hardware from \u003c\/span\u003e\u003ca href=\"https:\/\/www.industrialshed.net.au\/collections\/structural-fasteners-bolts\" target=\"_blank\" rel=\"noopener\"\u003e\u003cstrong\u003e\u003cem\u003eStructural Fasteners \u0026amp; Bolts\u003c\/em\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e where structural tie points are required.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eCorrect batten spacing \u0026amp; membrane alignment are commonly set using tools from \u003c\/span\u003e\u003ca href=\"https:\/\/www.industrialshed.net.au\/collections\/measuring-layout-tools\" target=\"_blank\" rel=\"noopener\"\u003e\u003cem\u003e\u003cstrong\u003eMeasuring \u0026amp; Layout Tools\u003c\/strong\u003e\u003c\/em\u003e\u003c\/a\u003e\u003cspan\u003e before fixing begins. On larger commercial or rural roofing projects bulk cartons are distributed efficiently using \u003c\/span\u003e\u003ca href=\"https:\/\/www.industrialshed.net.au\/collections\/materials-handling-equipment\" target=\"_blank\" rel=\"noopener\"\u003e\u003cstrong\u003e\u003cem\u003eMaterial Handling Equipment\u003c\/em\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e to maintain steady workflow across wide spans.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis range focuses on membrane retention, reduced tear-through risk \u0026amp; durability suited to wind, heat \u0026amp; seasonal variation across Australia.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhat’s in This Collection:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003e► Macsim Underlay Nails wide head profile\u003cbr\u003e‣ Improves clamping pressure across roofing felt \u0026amp; sarking\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003e► Hardened steel shank construction\u003cbr\u003e‣ Ensures clean penetration into timber battens\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003e► Corrosion-resistant coated variants\u003cbr\u003e‣ Suitable for exposed roof cavity environments\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003e► Multiple length configurations\u003cbr\u003e‣ Supports varying batten thickness requirements\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e► Bulk contractor pack sizes\u003cbr\u003e‣ Ideal for shed, residential \u0026amp; commercial roofing projects\u003c\/strong\u003e\u003c\/p\u003e","products":[{"product_id":"macsim-2-0x25-ann-underlay-bri-1kg-13ufa125","title":"Macsim - 2.0x25 Ann.underlay Bri. 1kg | 13UFA125","description":"","brand":"Macsim","offers":[{"title":"Default Title","offer_id":51472262496545,"sku":"13UFA125","price":19.22,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/4562\/8449\/files\/macsim_a8e4f361-64c9-4676-a0fe-cf280a3001a8.jpg?v=1752941131"},{"product_id":"macsim-2-0x25-ann-underlay-bri-2kg-13ufa225","title":"Macsim - 2.0x25 Ann.underlay Bri.2kg | 13UFA225","description":"","brand":"Macsim","offers":[{"title":"Default Title","offer_id":51472262529313,"sku":"13UFA225","price":36.48,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/4562\/8449\/files\/macsim_26c70e13-fa20-4ed1-a046-dd3acc28c618.jpg?v=1752941131"},{"product_id":"macsim-2-0x25mm-ann-underlay-bri-5kg-13ufa525","title":"Macsim - 2.0x25mm Ann.underlay Bri.5kg | 13UFA525","description":"","brand":"Macsim","offers":[{"title":"Default Title","offer_id":51472262562081,"sku":"13UFA525","price":77.42,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/4562\/8449\/files\/macsim_56fb1c44-506f-4147-81c3-2b4a045741ef.jpg?v=1752941131"},{"product_id":"macsim-2-0x25-ann-underlay-bri-500g-13ufad25","title":"Macsim - 2.0x25 Ann.underlay Bri.500g | 13UFAD25","description":"","brand":"Macsim","offers":[{"title":"Default Title","offer_id":51472262594849,"sku":"13UFAD25","price":10.24,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/4562\/8449\/files\/macsim_faa857f9-24aa-47f3-bc2e-bd4cec630d1a.jpg?v=1752941132"},{"product_id":"macsim-2-0x25-ann-underlay-bri-100g-13ufas25","title":"Macsim - 2.0x25 Ann.underlay Bri.100g | 13UFAS25","description":"","brand":"Macsim","offers":[{"title":"Default Title","offer_id":51472262627617,"sku":"13UFAS25","price":3.38,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/4562\/8449\/files\/macsim_e6e899ad-5e2f-4661-9ec7-ae7ab2f98b18.jpg?v=1752941132"},{"product_id":"macsim-2-0x25-ann-undelay-gal-1kg-13ufg125","title":"Macsim - 2.0x25 Ann.undelay Gal 1kg | 13UFG125","description":"","brand":"Macsim","offers":[{"title":"Default Title","offer_id":51472262660385,"sku":"13UFG125","price":24.26,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/4562\/8449\/files\/macsim_346d7c22-eed1-4b55-88b9-66d9a31684d1.jpg?v=1752941132"},{"product_id":"macsim-2-0x25-ann-underlay-gal-2kg-13ufg225","title":"Macsim - 2.0x25 Ann. Underlay Gal.2kg | 13UFG225","description":"","brand":"Macsim","offers":[{"title":"Default Title","offer_id":51472262693153,"sku":"13UFG225","price":43.52,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/4562\/8449\/files\/macsim_889d565f-6f40-4c63-9d3d-ab72d9d3f804.jpg?v=1752941132"},{"product_id":"macsim-2-0x25-ann-underlay-gal500g-13ufgd25","title":"Macsim - 2.0x25 Ann.underlay Gal500g | 13UFGD25","description":"","brand":"Macsim","offers":[{"title":"Default Title","offer_id":51472262725921,"sku":"13UFGD25","price":13.94,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/4562\/8449\/files\/macsim_ed39144b-1ce6-4b95-a52a-d3711a9376c3.jpg?v=1752941132"},{"product_id":"macsim-2-0x25-ann-underlay-gal100g-13ufgs25","title":"Macsim - 2.0x25 Ann.underlay Gal100g | 13UFGS25","description":"","brand":"Macsim","offers":[{"title":"Default Title","offer_id":51472262758689,"sku":"13UFGS25","price":3.66,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/4562\/8449\/files\/macsim_57f74f2f-ea00-461d-b811-7ddf99caf4ad.jpg?v=1752941132"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/4562\/8449\/collections\/Untitled_design_73_b7e36eb8-02ad-4c1e-a320-e2fed025eaf8.png?v=1754445973","url":"https:\/\/www.industrialshed.net.au\/collections\/macsim-underlay-nails.oembed","provider":"Industrial Shed","version":"1.0","type":"link"}