Wood rot repair

How to make a permanent repair

Before we explain how to repair wood rot, it is first necessary to explain exactly what wood rot is and how it is caused.  

What is wood rot?

Wood rot is an attack on timber, caused by fungal spores. It usually occurs in wooden frames or other facade carpentry that is exposed to various external influences.

What are the causes? Wood has many different influences. There are weather influences such as temperature differences, rain and wind, but also mechanical damage (damage that you do to the wood yourself) and pollution. All this causes damage to the paint system, which leads to the activation of fungal spores more quickly. Ultimately, it is these fungal spores that attack the wood and therefore cause rot. The fungal spores become active by the following three factors:

  • Temperature between 5 and 40ºC
  • Oxygen
  • Moisture content of the wood higher than 21%.
Wood rot repair

Wood rot repair

How to make a permanent repair

Before we explain how to repair wood rot, it is first necessary to explain exactly what wood rot is and how it is caused.

Wood rot repair

What is wood rot?

Wood rot is an attack on timber, caused by fungal spores. It usually occurs in wooden frames or other facade carpentry that is exposed to various external influences.

What are the causes? Wood has many different influences. There are weather influences such as temperature differences, rain and wind, but also mechanical damage (damage that you do to the wood yourself) and pollution. All this causes damage to the paint system, which leads to the activation of fungal spores more quickly. Ultimately, it is these fungal spores that attack the wood and therefore cause rot. The fungal spores become active by the following three factors:

  • Temperature between 5 and 40ºC
  • Oxygen
  • Moisture content of the wood higher than 21%.

Wood rot repair

How to make a permanent repair

Before we explain how to repair wood rot, it is first necessary to explain exactly what wood rot is and how it is caused.

Wood rot repair

What is wood rot?

Wood rot is an attack on timber, caused by fungal spores. It usually occurs in wooden frames or other facade carpentry that is exposed to various external influences.

What are the causes? Wood has many different influences. There are weather influences such as temperature differences, rain and wind, but also mechanical damage (damage that you do to the wood yourself) and pollution. All this causes damage to the paint system, which leads to the activation of fungal spores more quickly. Ultimately, it is these fungal spores that attack the wood and therefore cause rot. The fungal spores become active by the following three factors:

  • Temperature between 5 and 40ºC
  • Oxygen
  • Moisture content of the wood higher than 21%.

The advantages of wood rot repair

First you need to consult a painting company or maintenance company to ascertain whether the window needs to be replaced, or whether it is possible to carry out repairs or partial replacement. 95% of the time it is possible to repair. With the right products and correct application of it, wood rot repairs will last for the lifetime of the substrate. Below you can read how to repair it in the right way.

Not only is repairing far cheaper than replacing, the durability of your window will increase significantly.  The cost savings are therefore not just at the point of application.  The resin enables maintenance cycles to be extended, reducing whole life costs.  There are also the sustainability benefits of removing the wood rot and repairing the current frame rather than replacing entire window frames – often all windows frames are replaced to ensure property continuity.

How do you repair wood rot?

The best results come from using our DRY FLEX® resins following our 7 steps to achieving durable repairs.  You will then eliminate all of the rot and ensure a sound wood rot repair.

  • Step 1: Remove paint at least 10 millimetre from around the damaged area.
  • Step 2: Remove all decayed damaged wood using a high-speed router with a round cutter, leaving a straight shoulder with a minimum depth of 5 millimetre.  You must ensure all of the wood rot is removed.
  • Step 3: Check moisture content this must be 18% or below, then apply DRY FIX® by brushing liberally onto the bare wood allowing this to penetrate the wood for a minimum of 20 minutes.
  • Step 4: Using the EASY•Q™ double dosing gun, dispense the 2 component DRY FLEX® on to a plastic mixing plate, mix thoroughly until a homogeneous colour is reached.  Apply a thin coat onto the primed wood.
  • Step 5: Complete the repair by adding more DRY FLEX® and shaping using metal EASY•Q™ repair knives leaving a smooth finish.
  • Step 6: When the DRY FLEX® resin has completely cured, lightly sand leaving a smooth finish and a key for the decorative coating.  Any minor defects can be rectified using DRY FLEX® SF (fine surface filler).
  • Step 7: Finish in accordance with the approved paint specification.

Are you curious about our wood repair products? Check them on the right or see all our resins and tools in the webshop.

How do you repair wood rot?

The best results come from using our DRY FLEX® resins following our 7 steps to achieving durable repairs.  You will then eliminate all of the rot and ensure a sound wood rot repair.

  • Step 1: Remove paint at least 10 millimetre from around the damaged area.
  • Step 2: Remove all decayed damaged wood using a high-speed router with a round cutter, leaving a straight shoulder with a minimum depth of 5 millimetre.  You must ensure all of the wood rot is removed.
  • Step 3: Check moisture content this must be 18% or below, then apply DRY FIX® by brushing liberally onto the bare wood allowing this to penetrate the wood for a minimum of 20 minutes.
  • Step 4: Using the EASY•Q™ double dosing gun, dispense the 2 component DRY FLEX® on to a plastic mixing plate, mix thoroughly until a homogeneous colour is reached.  Apply a thin coat onto the primed wood.
  • Step 5: Complete the repair by adding more DRY FLEX® and shaping using metal EASY•Q™ repair knives leaving a smooth finish.
  • Step 6: When the DRY FLEX® resin has completely cured, lightly sand leaving a smooth finish and a key for the decorative coating.  Any minor defects can be rectified using DRY FLEX® SF (fine surface filler).
  • Step 7: Finish in accordance with the approved paint specification.

Are you curious about our wood repair products? Check them on the right or see all our resins and tools in the webshop.

How do you repair wood rot?

The best results come from using our DRY FLEX® resins following our 7 steps to achieving durable repairs.  You will then eliminate all of the rot and ensure a sound wood rot repair.

  • Step 1: Remove paint at least 10 millimetre from around the damaged area.
  • Step 2: Remove all decayed damaged wood using a high-speed router with a round cutter, leaving a straight shoulder with a minimum depth of 5 millimetre.  You must ensure all of the wood rot is removed.
  • Step 3: Check moisture content this must be 18% or below, then apply DRY FIX® by brushing liberally onto the bare wood allowing this to penetrate the wood for a minimum of 20 minutes.
  • Step 4: Using the EASY•Q™ double dosing gun, dispense the 2 component DRY FLEX® on to a plastic mixing plate, mix thoroughly until a homogeneous colour is reached.  Apply a thin coat onto the primed wood.
  • Step 5: Complete the repair by adding more DRY FLEX® and shaping using metal EASY•Q™ repair knives leaving a smooth finish.
  • Step 6: When the DRY FLEX® resin has completely cured, lightly sand leaving a smooth finish and a key for the decorative coating.  Any minor defects can be rectified using DRY FLEX® SF (fine surface filler).
  • Step 7: Finish in accordance with the approved paint specification.

Are you curious about our wood repair products? Check them below or see all the resins and tools in our webshop.

How-to videos

You prefer to watch the 7 steps via our how-to videos? Watch all videos on our website.

Guides for the entire house

Painters and Decorators hate arriving on a job to find rotted wood. It often causes delays or even losing the job overall. With our guides and DRY FLEX® wood filler, you can confidently repair any rotted wood in the house.

How-to videos

You prefer to watch the 7 steps via our how-to videos? Watch all videos on our website.

Any questions? Contact us!

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