Decking Joist Tape to protect the tops of timber subframe. Dramatically increase the life of the subframe with Impervious Joist Tape. 70mm wide to provide ample coverage over 45-50mm timber joists. This high-quality 70mm x 20m decking Butyl joist tape with strong adhesive quality ensures long-lasting protection against water and debris, making it an essential addition to your pressure treated timber subframe. Easy peel backing provides a quick and stress free installation process. Multi-Purchase Discount
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