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How to treat Dry Rot
1. Identify and remove the source of moisture
2. Ensure there is adequate ventilation and humidity control
3. Cut out the decay, where it is structurally weak beyond repair, to sound timber
4. Apply Ecobor II Gel to end grains and any susceptible surfaces
5. Apply Borotreat 10P, dissolved in water, by spray to timber and masonry
6. Apply Boracol B40/1 and Boron Rods to surrounding timbers at least 300mm in all directions from the limits of the attack and to all timbers above 20% moisture content: use 9mm diameter holes in a prescribed pattern.
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How to prevent Dry Rot
1. Prevent the ingress of moisture by eliminating penetrating and rising dampness
2. Treat vulnerable timbers (those above 18% moisture content) and those subject to seasonal dampness (e.g. window and door frames, wall plates) with Boron Rods, Boracol B40/1 Paste and Ecobor II GEL. To prevent surface spread apply Dry Rot Paint, a biocidal paint that can be applied to timber and masonry. BRE testing proves that Dry Rot will not 'walk across' surfaces coated with this paint.
3. To avoid leaving timbers that are drying out vulnerable to Dry Rot, cut back wet rot damage and dry out/treat as above
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How to treat embedded timbers - lintels, wall plates, bonding timbers
1. Ensure the timbers are suitable for treatment
2. Drill a pattern of 9mm diameter holes in the timber, typically shown in the wall plate opposite.
3. Drill within 25mm of the back face and ensure that the holes are free of debris.
4. Inject a small volume of Boracol B40/1 Paste into the hole and then push home an 8mm diameter Boron Rod of an appropriate length.
5. Repeat until the hole is filled, but leaving an adequate head clearance space to allow the hole to be sealed with a wooden dowel or filler.
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