Boat Maintenance
Buy and sell boat maintenance supplies in Guatemala.
A boat that spends its weekends on a trailer between the capital and the beaches at Iztapa or Puerto San José comes home with chalky gelcoat, salt in the motor’s cooling passages and the odd star crack from the launch ramp. The fixes for all three are bought and sold here: gelcoat and resin for the cracks, rubbing compound and wax for the shine, flushing muffs for the motor. Boats left in the water add bottom paint to the list. Supplies may be sealed and new or left over from someone else’s finished job, and with resin and paint the date printed on the tin counts as much as the brand.
Gelcoat, resin and fibreglass repair kits:
on a fibreglass boat the gelcoat is the skin that takes every knock. A gelcoat kit fills chips and star cracks; resin with glass mat rebuilds a gouge in the keel or a soft patch in the floor. The real choice is polyester or epoxy: polyester is cheaper and is what the hull was built from, but it shrinks as it cures and grips old, fully cured laminate poorly. Epoxy bonds to old fibreglass far better and keeps longer in the tin, yet gelcoat will not stick on top of it, so an epoxy repair on a white topside has to be painted afterwards. Finishing gelcoat also needs wax in the mix or film over it, otherwise the surface stays tacky; the unwaxed kind is meant to be covered by another layer.
Compound, polish and wax for a sun-faded hull:
a boat that lives on a trailer in the Pacific lowlands loses its gloss long before the gelcoat wears through. White chalk on your hand means the surface has oxidised, and wax laid over it only seals the dullness in. Compound cuts the dead layer, polish brings back the gloss and marine wax protects it. A dual-action polisher is forgiving for a first-timer, while a rotary one cuts faster and can burn through thin gelcoat on an edge. Impellers, filters and plugs sit under boat engine parts, and cleats and steering cables under marine hardware.
Bottom paint for boats that stay in the water:
a boat towed home after every outing does not need antifouling at all, and on a trailer boat it only rubs off on the bunks. A boat left on a mooring for weeks does. Hard paint suits a fast boat or one scrubbed often, but once the boat is hauled it has to be recoated before it goes back in. Ablative paint wears away slowly like a bar of soap and keeps working through a haul-out and relaunch, which suits a boat lifted out for hurricane season. Find out what is already on the hull before you buy, because hard paint does not go over an old ablative coat without stripping it first. A boat brought up the Río Dulce into fresh water loses its barnacles, but the dead shells stay glued on and still have to be scraped off.
Opened tins, old resin and used polishers:
age does more damage to these supplies than use. Polyester resin keeps for months rather than years and thickens towards jelly in a hot storeroom, so tip the can before you pay: if it no longer pours like syrup, it is finished. It also needs its own bottle of MEKP catalyst, which ages as well. Epoxy lasts longer, but only with the matching hardener from the same maker. Antifouling settles into a hard layer at the bottom of the tin, and an opened one that has skinned over, or whose copper will not stir back in, is close to worthless. A white gelcoat kit rarely matches an older hull, which yellows with years of sun. Run a used polisher at every speed and listen for grinding bearings, and check a pressure washer for water dripping from the pump.
Leftover bottom paint and epoxy after a lay-up:
the people with these to pass on are owners who have just finished a bottom job, or cruisers leaving the Río Dulce for the sea with half a tin of ablative and a set of epoxy pumps. Photograph the label showing brand, colour and type alongside the date stamp, and say whether the tin has been opened and roughly how much is left. Two-part products need both parts in the picture. Say where it was stored: a buyer driving over from Cobán wants to know a can of resin has not spent months in a tin-roofed shed. Bottom paint finds its next boat fastest when the listing says hard or ablative, since whoever buys it has to match what is already on their own hull.