{"product_id":"treated-sawn-c24-timber-47mm-x-50mm","title":"Treated Sawn Reg C24 Timber 47mm x 50mm","description":"\u003cp\u003eTreated sawn C24 timber 47mm x 50mm is a structural softwood strength-graded to BS 4978, kiln dried, and pressure treated (Tanalised) for long-term performance. Suitable for framing, decking subframes, and general structural work where a verified grade and treated timber are specified.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStructural softwood\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGrade\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eC24 to BS 4978\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTreatment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePressure treated (Tanalised)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRegularised (planed all round)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e47mm x 50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.8m (16ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProfile\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSawn, regularised\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUse Class\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUC3 (above ground, exposed)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat it's used for\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eDecking subframes and joist structures where treated timber is a specification requirement\u003c\/li\u003e\n \u003cli\u003eStud partitioning and timber-framed wall construction\u003c\/li\u003e\n \u003cli\u003eRoof tiling battens and general structural framing\u003c\/li\u003e\n \u003cli\u003eOutbuilding and garden structure framing where ground or weather exposure is likely\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFitting and handling\u003c\/h2\u003e\n\u003cp\u003eStore timber flat and off the ground on level bearers, under cover where possible, to prevent bowing or moisture uptake before installation. Allow the timber to acclimatise to site conditions for at least 48 hours before fixing, particularly in heated internal environments. Use hot-dip galvanised or stainless steel fixings throughout, as standard bright steel fixings can react with the preservative treatment and corrode prematurely.\u003c\/p\u003e\n\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between C16 and C24 graded timber?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eC24 has a higher strength classification than C16, meaning it can span further and carry greater loads for the same cross-section. For decking joists, rafters, or any structural application with demanding load requirements, C24 is the specified grade under current building regulations guidance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use Tanalised C24 timber outdoors without further treatment?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. Pressure treatment (Tanalisation) protects the timber against rot, fungal decay, and insect attack, making it suitable for exterior use in above-ground applications. Cut ends exposed during installation should be treated with an end-grain preservative to maintain protection at those points.\u003c\/p\u003e\n\n\u003cp\u003eBrowse the full range of \u003ca href=\"\/collections\/c24-graded-timber\"\u003eC24 graded timber\u003c\/a\u003e at Nottage Timber Merchants. We supply trade and retail customers across South Wales, with next-day delivery available to the Bridgend area and surrounding postcodes. Contact us for a quote on larger volumes.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between C16 and C24 graded timber?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"C24 has a higher strength classification than C16, meaning it can span further and carry greater loads for the same cross-section. For decking joists, rafters, or any structural application with demanding load requirements, C24 is the specified grade under current building regulations guidance. Always account for this when setting out structural work.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use Tanalised C24 timber outdoors without further treatment?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Pressure treatment (Tanalisation) protects the timber against rot, fungal decay, and insect attack, making it suitable for exterior use in above-ground applications. Cut ends exposed during installation should be treated with an end-grain preservative to maintain protection at those points.\"}}]}\u003c\/script\u003e","brand":"Nottage Timber Merchants","offers":[{"title":"4.8m \/ 4800mm \/ 16ft","offer_id":52565991915857,"sku":"CARCTAN475048","price":6.72,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/1467\/1697\/files\/c24-treated-timber-2-2__12965.1721255466.1280.1280.jpg?v=1765212575","url":"https:\/\/www.timberonline.co.uk\/products\/treated-sawn-c24-timber-47mm-x-50mm","provider":"Nottage Timber Merchants","version":"1.0","type":"link"}