Protecting your mainsail from sun, salt, and rain is essential for longevity and performance. This guide highlights five top boom cover options that balance durability, fit, and weather resistance. Each pick suits different boat sizes and budgets, helping sailors choose the right cover for their mast length and sailing conditions.
Buyer-friendly summary of chosen products:
| Product | Recommended For | Key Benefit | Approx. Boom Length |
|---|---|---|---|
| SavvyCraft Waterproof Mainsail Boom Cover — 11′-12′ (Navy) | Smaller mainsails, cost-conscious buyers | UV protection and secure fit | 11’–12′ |
| SavvyCraft Waterproof Mainsail Boom Cover — 13′-14′ (Navy) | Medium to larger mainsails | Durable construction, snug fit | 13’–14′ |
| 11-12FT Mainsail Boom Cover — 164″ x 48.8″ (Daspom) | Large mainsails with long spans | Heavy-duty 600D material, windproof | 164″ x 48.8″ |
| Mainsail Boom Cover — 12′-13′ (Black, 800D) | High-durability, UV protection | Fast-drying, colorfast fabric | 12′-13′ |
| SavvyCraft Waterproof Mainsail Boom Cover — 12′-13′ (Green) | Mid-range, versatile fit | UV protection with reflective features | 12’–13′ |
SavvyCraft Waterproof Mainsail Boom Cover 11′-12′ Navy
The 11′-12′ SavvyCraft boom cover is designed for smaller to mid-sized mainsails. It uses UV-protected marine-grade polyester with a PU-coated back for waterproofing and breathability. A heavy-duty #10 zipper at the mast end, a top tie string, and a storm flap with Velcro ensure a secure seal and water exclusion. The bottom edge includes adjustable tie-down straps with buckles for a neat, snug fit. Triple-layered hems and double stitching reinforce the edges, while a silver UV-reflective layer at the mast helps limit heat buildup.
Best for: Sailors with boom lengths around 11′-12′ seeking reliable UV protection and a secure, weather-resistant fit.
Caution: The zipper protection relies on the storm flap; ensure the flap remains aligned to prevent water ingress in heavy rain or spray.
SavvyCraft Boom Cover 13′-14′ Navy
This larger version mirrors the 11′-12′ model with the same UV protection and secure-fit features but is built for 13′-14′ booms. The solution-dyed, fade- and UV-resistant polyester fabric remains waterproof yet breathable. Its polarized mast-area UV shield reduces heat stress, and the durable stitching supports long-term use. Adjustable bottom straps with buckles secure the cover along the boom, and the zipper area benefits from the storm flap and Velcro closure.
Best for: Owners with 13′-14′ booms needing robust weather resistance and a proven secure fit.
Limitation: Slightly larger size may be unnecessary for some boats, potentially adding weight and wind catch in light air when not tightly secured.
11-12FT Mainsail Boom Cover — Daspom
Daspom’s 11-12 ft boom cover emphasizes heavy-duty 600D Oxford cloth with PU coating for water resistance and sun protection. It measures 164 inches by 48.8 inches and features a side zipper protected by a wide Velcro windproof flap. A bottom adjustable webbing tie with an internal buckle and a top drawstring provide a secure fit against wind and water ingress. Double-stitching adds durability for varied weather, making it a solid option for frequent coastal use.
Best for: Sailors needing a large, rugged cover with a straightforward, secure closure and strong waterproof performance.
Limitation: May be less colorfast if exposed to intense sun over many seasons, depending on exposure and storage practices.
Mainsail Boom Cover 12′-13′ Black — 800D Oxford
This 12′-13′ cover uses 800D Oxford cloth with a polyurethane heat-reflective coating on the back for water resistance and fast drying. It also protects canvas from UV exposure to extend sail life. A large zipper, fixed rope, and ABS carabiner help ensure a snug fit after installation, reducing wind flapping. The three-layer hem and double-stitched seams improve longevity, and the fabric is designed to resist fading under intense sun.
Best for: Sailors who want durable, high-durability fabric with excellent UV protection and a snug, one-piece install.
Caution: Ensure the zipper flap remains properly positioned to keep rain out during heavy spray conditions.
SavvyCraft 12′-13′ Boom Cover — Green
The green variant from SavvyCraft offers the same core benefits as the navy version but adds UV protection and reflective features for heat management. It uses a robust 600D or similar heavy-duty textile with a PU-coated back to provide waterproofing while remaining breathable. A 2″ Velcro storm flap covers the zipper, and adjustable bottom straps secure the fit. The heavy construction, reinforced hems, and reflective mast-area layer are designed for long service life in sunny or coastal environments.
Best for: Sailors seeking a versatile, mid-range option with reliable protection and a distinctive color choice.
Limitation: If color matching matters for your boat, confirm available colors and photos before purchase, as shade may vary by screen.
Buying Guide
- What size is your mainsail boom? Choose a cover that matches your boom length (for example, 11′-12′, 12′-13′, or 13′-14′). A proper fit reduces wind flapping and water ingress.
- Material durability and UV protection Look for solution-dyed fabrics with UV inhibitors and a waterproof yet breathable membrane. Heavier fabrics (e.g., 800D, 600D) typically last longer in sun-exposed environments.
- Closure system and water seal A robust zipper with a storm flap and Velcro closure improves water exclusion. Ensure the flap covers the zipper completely when in use.
- Installation and fit Check for a drawstring or top tie, bottom webbing straps, and internal buckles to secure the cover against wind. A snug fit maintains appearance and performance.
- Weather considerations If you sail in heavy spray or coastal conditions, prioritize models with UV-reflective layers to reduce heat stress on the sail and fabric.
- Color and visibility Lighter colors reflect heat, but darker colors may hide salt and grime longer. Reflective mast-area features help visibility and heat management.
FAQ
- Q: Do these covers fit all boom lengths? A: They come in multiple sizes (e.g., 11′-12′, 12′-13′, 13′-14′), so match the product to your specific boom length for best fit.
- Q: Are the fabrics waterproof? A: Yes, most covers use PU-coated, waterproof fabrics while remaining breathable to prevent condensation inside the cover.
- Q: How do I maintain the cover? A: Rinse with fresh water after sailing, air-dry completely, and store away from direct sunlight to preserve color and fabric integrity.
- Q: Will a larger cover affect performance? A: A properly sized cover reduces wind resistance and sail exposure; avoid oversized covers that flap or catch wind in light conditions.
- Q: What is the best option for UV protection? A: Look for covers with UV-resistant materials and reflective mast-area layers to minimize heat absorption and fabric wear.
- Q: Do these covers include hardware? A: Most include zippers, fasteners, and flaps; some models add carabiners or drawstrings for an extra secure fit.