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Wood Repair
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WOOD REPAIR SYSTEM

There are many reasons to repair wood windows and doors instead of replacing them. Wood used in older windows and doors was milled from select mature trees and is more resistant to decay and warping than currently available domestic woods. It is usually less expensive to repair windows and door than it is to replace them, especially when the woodwork is large or complex. Repairing is also preferable for reasons of historic preservation and environmental conservation.

Our wood repair system is based on a unique epoxy compound with cured properties similar to wood. It is supplied in a dual-cartridge system that assures precise mixing and easy application. It does not slump or sag, even in very thick applications, and works on both horizontal and vertical surfaces. It tools well, has a long working time (30 minute minimum), doesn’t shrink (less than 1%), and is easily sanded and painted. It bonds exceedingly well with wood and does not become brittle with age.

In comparison, other wood repair systems all have serious limitations. Polyester wood fillers (Minwax, Bondo) are less flexible than epoxies and don’t adhere as well to wood. Marine epoxy systems (WEST) require complicated mixing and are often too brittle. Consolidation systems (Abatron) recommend application over deteriorated wood fibers, risking bond failure due to expansion and contraction, leading to further decay.

MATERIALS REQUIRED: One epoxy cartridge yields 24 cubic inches, roughly the size of a grapefruit or softball. Order one primer for every four epoxy cartridges. When stored in a cool environment, primer and epoxy cartridges have a one-year shelf life. Static mixers, mixing cups, primer brushes, and gloves are designed for a single use.

epoxy cartridge		primer	static mixer
standard 2-component gun		high-pressure 2-component gun
disposable glove	disposable cup	disposable brush	disposable putty knife

PREPARATION: The temperature must be at least 40°F and rising. In warm weather, do not work in direct sunlight. Surfaces must remain dry until the epoxy is cured and painted, so postpone exterior work when rain is anticipated within 24 hours. If a moisture meter is available, verify that the wood moisture content is less than 18%. The repair compound contains no VOC’s but interior workspaces should be well-ventilated. Wear plastic gloves to avoid skin contact.

APPLICATION PROCEDURE: Begin by removing all paint near the area to be repaired. If stripping with heat, be careful to avoid burning since epoxy will not bond properly to burnt wood. For best results, we recommend our infrared paint stripper (see separate information sheet). Sand the surface to bare wood and remove fibers, paint residue, sawdust, and dirt. Remove all decayed wood to expose sound, bright wood (no red-brown or gray spots). Enlarge any cracks and joints to at least 1/4” wide by 1/2” deep. Then follow the following procedures:

 

 

PRICING: Call or email for current pricing.

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