Interlux Paint Seam & Bedding Compounds / Putties

Interlux Seam & Bedding Compounds: Marine-Grade Sealing Built on Over a Century of Expertise

When it comes to keeping a wooden boat watertight, few details matter more than the compounds used to seal its seams, bed its hardware, and fill its joints. Interlux Paint — a brand with roots going back to 1881 — brings that same commitment to high-performance marine coatings to its line of seam and bedding compounds and putties. These products are engineered specifically for the demanding marine environment, where planks flex underway, deck hardware faces constant vibration and moisture intrusion, and hull seams must remain tight through seasonal cycles of expansion and contraction.

Purpose-Built Products for Wooden Boat Maintenance

Interlux offers distinct compounds tailored to where and how they will be used — a level of specificity that sets the brand apart from general-purpose sealants.

• Seam Compound (White / Topside): Formulated for filling hull seams of wooden boats above the waterline, this compound is highly adhesive when applied over properly primed surfaces, and remains pliable after curing to accommodate the natural expansion and contraction of planks over time. Its white color makes it compatible with topside paint systems.
• Underwater Seam Compound (Brown): Specifically designed for seams on wood boat bottoms and keel joints that flex, this compound is easily applied by putty knife and is engineered to stay sealed in the harsher submerged environment below the waterline.
• Boatyard Bedding Compound (214Q): Used to bed deck hardware and joiner work, this natural-colored compound provides a long-lasting, watertight seal between fittings and the deck — a critical barrier against deck leaks that can damage structure and interior joinery alike.
• Surfacing Putty: Ideal for fairing, filling scratches and holes, and general boat-building repairs, this putty rounds out the lineup for surface preparation before priming and painting.

Why Interlux Compounds Belong in Your Boatyard Kit

What makes Interlux stand out in this category is the brand's deep understanding of how marine coatings systems work together. These compounds are formulated to be compatible with Interlux primers and topcoats, so they integrate seamlessly into a complete paint system rather than acting as an afterthought. A boatyard professional or dedicated DIY sailor can use Interlux products from bare wood through final topcoat with confidence that each layer is designed to work with the next.

Flexibility is the defining performance characteristic across Interlux's seam compounds. Wood is a living material — it swells with moisture and shrinks when dry — and a rigid compound will crack and fail under those stresses. Interlux's formulas are engineered to remain pliable after application and even after immersion, maintaining a durable, tight seal through the boat's working life.

Whether you're completing a spring commissioning, repairing a weeping seam, rebedding leaky deck hardware, or doing a full wooden boat restoration, Interlux's seam and bedding compound lineup gives you the right product for every stage of the job. Explore all available seam and bedding compounds and putties or browse the full Interlux Paint catalog to find the complete coating solution for your vessel.