Welcome to TLH Marine (The Leffler House Marine) a proudly family owned business based in the heart of Muskoka, where our passion for boating meets our commitment to quality craftsmanship.

As trusted suppliers and certified installers of SeaDek and CMD Marine products, we specialize in premium marine flooring and custom decking solutions; designed to enhance comfort, performance, and style on the water. SeaDek is a sleek non-slip decking chosen for its durability, function, and refined finish.

Boating has always been a way of life for us here in Muskoka. What began as a shared love for life on the lake grew into TLH Marine, a family-run company dedicated to helping others enjoy their boats to the fullest. We provide a fully mobile service, no matter if your boat is at the cottage or docked at a marina, we will travel to you from start to finish. This allows us to offer quality service without you missing a moment on the water. We take pride in offering a personal touch with every project, combining meticulous attention to detail with genuine care for all our clients’ satisfaction.

At TLH Marine, you’re not just another customer - you’re part of the boating community we call home. Whether you’re upgrading your deck, refining your setup, or starting from scratch, we’re here to deliver professional service, top-quality materials, and results you’ll be proud to show off.

Locally Owned. Family Built. Muskoka Inspired.