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Self service exercises in rot repair and treatment

Exercise 5 - Boron based treatments

  • You have found some damp timber. You have to decide what treatments to use

    (Use the attached form to make notes as you go and then compare them with the suggested answers). Click here for a copy of the Form.

    What you can see

    Roof frames made of sloping members (rafters) and horizontal beams (ties, collars) and their bearing ends (in the wall) all show signs of dampness (stains, darkening).

    Checking for defects

    What other symptoms of distress, damage or decay might you notice?

    Look for the cause

    What is causing the dampness?

    How are you going to confirm whether the process has stopped or is still continuing?

    Suggest the 'moisture meter' readings on which you might advise a Client as follows: a) no action required, b) at risk, needs treatment

    Give as many examples as possible of why these timbers might have become wet in the first place.

    How could these causes be eliminated in new build, renovation or repair?

    Assess the damage

    How would you decide to what depth the dampness extends?

    What specialist surveying tools could you use?

    Why is treatment to depth necessary?

    Offer a treatment

    Which types of Boron based products are you likely to use?

    Click here to see Boron rods being installed.

    Click here to see a position diagram for window frame preservation.

    What other measures might you take to reduce the risk of future decay?

    Some answers

    Click here to see the completed form? Suggest your own improvements to the answers.

    Click here to see other examples of Boron based treatments that are suitable for this situation?

    Back to the First Exercise - click here


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