The Thermory Cornering Options Installation Guide (PDF) provides eight detailed inside and outside corner solutions for finishing Thermory cladding projects. These drawings offer multiple design approaches—from simple butt-joint corner boards to premium mitered assemblies and aluminum trim systems—so builders can choose the right look for each project. All details apply to Thermory’s ash, pine, and spruce cladding lines.
The guide opens with general installation notes, including the requirement that all fasteners be stainless (screws, nails, or brads) and that a minimum 1/32″ expansion gap remain between boards. Thermory specifies not to caulk these gaps, ensuring the material can move naturally. Installers must inspect all boards for moisture or manufacturing defects prior to installation—installed boards are considered accepted. Eight corner options are provided:
• **Option 1 – 1×4 No-Groove Decking Utilized:** A clean, dimensional-lumber corner using square-edge boards for both inner and outer corners.
• **Option 2 – Butting with 5/4 & 2X material:** A thicker, more robust corner for deeper reveals or heavy-duty trim details.
• **Option 3 – Mitered Corner (with slight gap):** A modern, seamless appearance created by miter-cutting boards at 45°, with the required expansion gap illustrated.
• **Option 4 – Capped Corners:** A trim-forward solution where cladding is capped by thicker outer boards to create a framed appearance.
• **Option 5 – 5/4×4 Decking as Corner Boards:** Uses Thermory’s thicker decking boards to create bold, durable corner details.
• **Option 6 & 7 – EasyTrim Inside & Outside Corners:** Shows how EasyTrim EZ83, EZ84, and EZ85 profiles integrate with Thermory boards to create metal-accented corners.
• **Option 8 – Aluminum Corner System:** Uses Tamlyn™ Bold X and inside-corner aluminum profiles for crisp architectural lines and maximum durability.
A warranty-activation reminder is included, requiring registration within 90 days of purchase.
Download the full Thermory Cornering Options Installation Guide to explore each detail drawing and choose the right corner solution for your Thermory cladding project. Your TimberTown team is here to help you specify the correct profiles and trim for a clean, long-lasting installation.
Download Resource
