Causes and Treatment for Wood Rot

Old House

Treatment for Wood Rot

Wood rot is a common problem for old houses. But, before discussing the treatment of wood, let’s consider a few factors involved in the destruction of wood.

Mold and Wood Rot

Wood is a hygroscopic material. It can absorb water and refuse to release moisture in perfect balance with its environment. Humidity is an important factor. When wood is exposed to relative humidity with constant temperatures above 20 ° C, the mold will grow on the surface. At this stage, the wood loses none of its mechanical properties. If the humidity remains relatively high, the wood will turn blue first, then black. With the level of humidity, wood can swell or shrink and crack. The process of wood decay begins when the moisture content of wood exceeds the saturation point of the fiber. This is the rot that contributes to the destruction of the wood. Organisms such as destructive insects and fungi break down the wood structure. Be aware that mold is caused by the presence of fungi that, unlike the decay fungi, do not attack the wood fiber.

Many insects live and lay eggs in the wood. The wormwood grows, thrives and lives many years in the wood and does create many galleries. These are, specifically, the rillettes and beetles that invade our wood. To destroy these insects, one must probe the wood to discover the galleries and larvae. To effectively treat the wood and destroy the larvae, we recommend using products that can reach the heartwood.

Insecticide and fungicide.
High penetration of wood with deltamethrin microemulsion.
Effective against wood-boring insects and termites.
Enhanced action against the larvae.
Protects against fungus and mold.

Preventive performance: 4 m² / L
Yield healing: 3 m² / L
Number of coats needed: minimum two coats
Drying time between two layers: 15 minutes
Complete drying time: 24 hours
Holdover time: 10 years
Type of solvent: water
Product Features: Insecticide and fungicide

Drying Wood

On contact with air, the wood will take a definite amount of moisture. It is said that the wood moisture is equal to the moisture in the air around it. In the first phase, the wood dries without appearing to. During this phase of natural water escapes the drying wood. It evaporates slowly. There is no shrinkage. As the moisture content of wood is beyond the saturation point of the fibers, there is no withdrawal. For a good natural drying, air must have very low humidity and be renewed. When stripping a piece of furniture, we must avoid over-rinse or leave a part of the furniture in stagnant water. Avoid storage in humid and confined areas.

Sanding wood

The technique of sanding will, of course, depend on the support, the type of wood and its size. For large areas, it is advisable to use an electric sander. For small areas sanding paper and sanding cloth is sufficient. Use and sanding block to avoid sanding irregular.